Showing posts with label Concepts. Show all posts
Showing posts with label Concepts. Show all posts

9.16.2015

Back to the #future# - 10 trends for the future of recycling and waste management (continued)

As most of my readers already know, my passion is to bring recycling and waste management at the forefront of the global agenda - I want to make it as trendy as it is to speak about New York Fashion Week (although sometimes this is really ridiculous) with designers like Vera Wang, Coach, Oscar de la Renta, Rodarte and Tory Barch. I believe the key to such an effort is the content.

So, I made a short but necessary break to write about my report "Wasted Health: the tragic case of dumpsites" and now I am back to complete the list of the trends that will reshape waste management and recycling.

Well, up to now I have described 4 trends (out of the ten) that will reshape the future of recycling and waste management - namely


10 trends that will reshape waste management - Trend #1: Internet of Things


Technology of the future - Trend #2: New materials - new waste - new recycling technologies


Back to school: Trend #3: SWM industry should study thoroughly E-waste management



Get prepared - the following video highlights what's coming to my next blogs and also what has been already addressed - it also gives an idea of the content of my upcoming paper and presentation on the future of waste management and recycling.


Coming soon: Trend #5: Marine litter

4.11.2012

Let's speak about Waste To Energy...

Since I joined ISWA, almost 13 years ago, one of the best things that ISWA offered me is the opportunity to meet some guys like the one who is interviewed today, Mr. Hakan Rylander, CEO of the SYSAV Company Group. I would say that SYSAV is a role model company in WtE so I consider a visit to its web-site (www.sysav.se) as a very intersting one.

Hakan is my good friend and one of the guys that I really admire - sometimes I wish to become like him when I grow up and become more mature. For the time being I appreciate both his straight forward way as well as the fact that he is the type of "better do it than say it". As for his know-how, he is one of the most experienced WtE engineers I know, involved in all different phases and aspects of a WtE facility. 

 Besides being ISWA's president between 1996-98, Hakan has held many other key-positions e.g. Chairman of the ISWA WtE Working Group, Swedish Representative in the Nordic Association of Waste ManagementChairman of the Scania Society of EngineersCurrently Hakan is also running the R&D Committee of Avfall Sverige. So here comes his interview, I am sure you will enjoy it. Hakan, thanks a lot for your thoughtful answers...

 “Hakan, you are working for 40 years in the waste management industry and you have passed from several crucial positions, including your ISWA presidency few years ago. So I would say that for me and   my readers this a perfect opportunity to utilize your broad experience and address some key-issues that are discussed worldwide. So let's start with your operational experiences running one of the best incinerators in Europe. What were the most difficult problems you faced?

I have actually been running two large waste-to-energy plants, one in Gothenburg between 1993-96 and now the large one here at Sysav in Malmö.  Both plants are working in an excellent way, where we in both cases focused on a “conservative” concept, with a well established and proven technology, with steam figures of 400 degrees centigrade and 40 bars to minimize the risk for corrosion. Let us focus on the Sysav-plant, which I know the best today. When building the two new furnaces we put a lot of effort and time on the specification of requirements to be fulfilled by the suppliers, with a high accessibility, a high reliability and a plant easy to maintain. We also looked for the best and reliable flue gas cleaning system to be able to meet with all emission directives on a European and National level with a very good and safe margin in order to avoid all anxiety from the public and the neighbours of the plant. And of course, to an acceptable and low price. The big challenge was to "marry" the three big suppliers of boiler, flue gas cleaning and turboset so the deliveries fitted in time to each other and so we could handle the strong wind of southern Sweden when doing the high-raised installations.I think we managed very well in our efforts.

We have permission to incinerate 550 000 tons annually and during the last years we have been incinerating around 549 000 tons annually, we don´t cool off any heat at all. All produced energy is utilized as heat and electricity. The maintenance works as planned, taking place in the summer time when there is a low demand for heat. The emissions are far below the permitted levels. The big challenge when constructing and buying the new furnaces was to get an efficient, reliable plant to an acceptable price and we managed. Our gate fee is very competitive.

We didn´t have any problems with the public opinion when building the two last furnaces. The big problems came up already in 1973 when building the first two furnaces. There had never been any waste-to-energy plants in the Malmö-region before that and the plans and the building of a waste incineration plant caused a lot of objections and discussions from the public, NGOs and neighbours. Finally, Sysav got the permission and after that we have not had any problems. That is due to the very good results we have achieved in producing and delivering heat to the district heating system of Malmö and the very low emissions from the plant. When asking for permission for the two new furnaces we had an excellent reference in the two old ones. We have also all the time been very open in our information about the operation and the results we have achieved. We also invite people to visit our plant to see what actually happens and take place in a waste-to-energy plant.

To be successful when working with the public opinion I am completely convinced that you have to have an early, very honest and open dialogue with them. Don´t try to “hide” anything. Invite them to participate in the process and keep them informed. Present good references.

So what is the role of an incinerator in an integrated waste management system? Is it in competition with recycling or no?

Sysav WtE Plant
The answer is very easy to be given. There is no competition at all between recycling of materials and waste-to-energy, on the contrary the two methods complement each other.
The waste problem can´t be solved by using one method, you have to use them all – reuse, recycling, biological treatment, waste-to-energy and landfilling – in accordance with the EU Hierarchy.
Within Sysav we are working with all these methods. Last year we received 903 000 tons of different kinds of waste, 98% were recycled as materials and energy, only 2% was landfilled (22 000 tons). Less than 1% of the household waste was landfilled. We have by working in this way prolonging the remaining life time of our landfills with about 30 years. I have very strongly during the years believed that this is the correct way of dealing with waste as long as it exists, and I think the Sysav-results proof that it is a successful way.



Is incineration applicable to developing countries? Which are the conditions for a success?

Incineration should not be the first option in developing countries. It must start with a well managed landfill with methane gas recovery, material recycling with source separation and biological treatment of food waste with production of biogas and a bio-fertilizer. Such a concept would be the best for the environment and for the climate. With the present technolgy within waste incineration a lot of heat has to be cooled off in developing countries. You can of course produce electricity with higher effiecency in comparison with recovering heat as well as electricity as we do in the Nordic countries, but still a lot of heat is cooled away. The situation will improve significantly if you have a neighbouring industry or any other big activity/business with a demand for steam or heat.

Technically speaking, what can we expect from the technology in terms of improvements?

The big technical challenges with the present technology are today three and where we will improve:

- to reduce and minimize the amount of bottom ash. After the waste-to-energy process there still is about 20% of bottom ash as a residue. That means that there still is too much of unburnable waste coming to the waste-to-energy plants. We have to significantly reduce that amount to be more efficient in recovering energy and minimize the environmental problems of the residues.

- to develop a safe and environmentally correct way of final handling of the flue gas cleaning residues and to recover as much as technical and economically possible of the metal content in these residues and in the bottom ash

- to increase the electrical efficiency in the waste-to-energy plants. With high prices for electricity the power production should increase. Based upon some successful cases from some new European waste-to-energy plants. I would not hesitate to increase the steam figures above 400 degrees and 40 bars when building a new plant.

Last but not least, in a recent discussion I heard, probably for the 100th time in last two years, that incineration is dead and that gasification and plasma pyrolysis will soon substitute all incineration plants. What is the current status of those technologies? Are they applicable for Mixed MSW? Are there commercial applications and operational experiences? After all,  is it something we can trust?
6.      A lot of people say they are promising and they are more environmental friendly than incineration...

Sysav WtE Plant 
Well, I guess I have heard the same thing at least as many times as you Antonis. 

I remember when I joined the business in the 1970-ies that there was a big belief that gasification, pyrolysis and the plasma technology would be the “salvation” of the waste problem. A number of companies introduced gasification and pyrolysis technologies, just slightly different from each other. All the different methods had worked in a very good way when testing them in a small scale, feeding the reactors with a small, very well prepared amount of waste each time. The problems came when scaling up the technology. 

A number of plants were built in Europe and a number of efforts were done to successfully scale up the technology. However, it didn´t work anywhere unless you had a very very homogenous input of fuel to the reactors. Waste is not a homogenous fuel. It has so far turned out to be too heterogenous to be able to treat in a gasification or pyrolysis process, irrespective of how you pre-treat the waste. It is absolutely not applicable for mixed MSW with today's technology. Another very negative factor is that the energy balance very often has turned out to be negative.

It would, from an environmentally point of view, be an excellent method if it worked, with low emissions and with a very small and environmentally safe residue, but unfortunately the situation today and the experiences are the same today as almost 40 years ago, even if there have been and still are efforts to introduce gasification and pyrolysis on the market.

When planning for the two new furnaces in the Sysav-plant there were proposals and some efforts that we should change from conventional grate incineration to gasification. I said absolutely “No”, but to be fair to those who believed that gasification was the best technology we decided to carry out a study and a comparison between the two technologies. The answer was very clear: gasification would result in a negative energy balance. I am happy to say that we made the right decision, our results and experiences from the grate technology gives the answer.

I absolutely don´t want to be negative, it would be fantastic if the gasification and pyrolysis technology will develop in such a way that you can use it for MSW , with a clear positive energy balance and working in a safe way for those working at the plant.

I remember when I as a young person in the waste business, full of belief in new methods and technologies, in the middle 1970-ies participated in a very good conference in Antwerp about waste management. There was a whole session about gasification and pyrolysis and I was full of enthusiasm, expecting a lot from the different presentations. On the way in to the conference room I walked beside an older gentleman and colleague from Germany. I told him about my expectations and he looked very friendly upon me telling me that he had started to work with R&D within waste management already in 1922 at the Batelle Institute in Frankfurt, and the task was to gasify/pyrolyse waste in a better way than could be done in a waste incineration plant. He told me that they without any success had been trying to do so and that he still had very little faith gasification/pyrolysis could be developed and turn out to be a successful technology for waste. 

I was of course very disappointed to hear this, but still believed it was the technology for the future handling of waste. The bad experiences coming up very soon after that conference and all the failures and unsuccessful efforts since then has made me very skeptical.

Unfortunately, I believe there is a long way still to go, but we shouldn´t give up our efforts."


1.14.2012

Waste management in global cities

This is the first post of two that address the issue of waste management in global cities and megacities.I will try to resume some of my major findings during last two years. There will be a special event dedicated to waste management and global cities at the World Cities Summit 2012 and soon the whole program will be available - as far as I know top speakers are included. 

My research was in the framework of the ISWA project “Globalization and waste management” which is going to be presented in Florence 2012 Conference (see the excellent web-site) for the first time. ISWA;s Task Force has worked in four different packages namely a. megacities and waste management b. informal sector as a global stakeholder c. global recycling markets and d. international aid tools and their utilization.

Although the project is still on - going and there is a lot of work to be done until we will have complete it, there are some key-issues that I have concluded, especially about  global cities, which means cities that are highly interconnected in the globalization network. Some of the things I learnt have been already presented during ISWA 2011 conference in Daewoo, South Korea (see ISWA's knowledge base and search for megacities). 

Studying the triangle “Globalization – Megacities – Waste Management”  my major conclusion is that a waste management system in a global city or a megacity is much more than a local system because a. It is part of the global network of material flows b. It is highly affected by global consumerism trends and c. it is directly influenced by global regulations and initiatives related to waste management. Of course someone would easily complete that this is also true for other smaller or less globalized cities but this does not affect the core of the conclusion.

That complex dynamics between global and local markets, global and local governance, global and local stakeholders is a key issue for understanding waste management in  global cities.

As a result in megacities and global cities institutional development, social support and participation and financial sustainability (or the Software elements of waste management) are becoming more and more important especially for the success of recycling, reuse and waste prevention initiatives. They are highly sensitive to the continuous change of the neighborhoods and the appearance of “cities within the city”, especially to the poorest ones where inadequate waste management practices create serious health and environmental risks. Clearly, the Software elements control the social behaviour of citizens and thus they are the most important for the success of recycling, reuse and waste prevention programs.

It seems that a major barrier comes from the complex interactions between the hundreds stakeholders involved in a global city waste management. Another serious barrier comes from the lack of initiatives to integrate informal sector to waste management activities. 

From those remarks, it is obvious that the overall performance of a global city waste management system results from continuous interactions between global and local markets, emerging social behaviour, city governance, global and local stakeholders, city growth etc. And those interactions are hardly described by the traditional waste management approaches which are based on engineering and logistics.

The problem might be more general. As long as we face SWM as a matter of appropriate storage, collection, transfer, treatment and disposal and the main effort was to minimise environmental and health impacts, engineering and logistic tools were sufficient to plan and implement waste management systems. But today, resource management and social behaviour are becoming an organic part of any waste management system and they are essential to address increasing recycling rates and better quality of recyclables, participation of industrial stakeholders, eco-design initiatives and closed loops of products and materials.

Consequently, engineering and logistic tools are not enough to plan and deliver waste management systems in global cities. Especially in a megacity, the overall waste management system should be considered as “complex system”, which means a system composed of interconnected parts that as a whole exhibit one or more properties (behaviour among the possible properties) not obvious from the properties of the individual parts.

Complexity theory and Complex Systems Science (CSS) is a relatively new field of research focused on systemic understanding, self-organization, irreducibility, emerging patterns and properties and non-linear behaviour. Complexity science has been rapidly evolved during the last 20 years for the study of complex physical, biological and social systems. Cities as a whole may be considered as emerging entities existing near a critical point of self organization, far from equilibrium and qualitatively different from their constituent residents and subsystems.

Waste management systems in global cities should be studied using complexity theory and complex systems science tools because:

  • The overall performance of a megacity waste management system is the result of complex interactions between global and local stakeholders, global and local material flows, global and local recycling markets, global and local governance etc.
  • Effective recycling, waste prevention and reuse programs are of high importance for a megacity since they improve self-resilience and relief waste management systems. However, those programs are directly linked with social behaviour and the emerging system performance is a result of thousands or millions daily interactions.
  •  In global cities and megacities, local patterns and heterogeneity are the rule in waste management and micro-local dynamics have an impact at the system performance through their aggregate effects but also because they influence urban change iteratively through local connections and impacts.
  • In metropolitan areas there are a number of councils, utilities, regional and governmental authorities, NGOs, private sector companies, informal sector unions, municipal utilities etc. Each of these entities is operating according the rules of limited awareness and jurisdiction, and self-interest and with selected connections to other entities. The dynamics of stakeholders’ interaction in megacities cannot be predicted or modelled with the usual information tools 


But is it any easy and practical way to manage Complexity in global cities? Or the ideas above are just theoretical approaches? The answer will arrive at the next post

1.09.2012

The problem is not with waste but with climate!

Photo from Environmentla Photographer 2009, see http://www.ciwem.org/competition-and-awards/environmental-photographer/epoty-exhibitions--events.aspx 

This post is a really important contribution from my friend Martin Steiner (General manager of TBU Austria  - see www.tbu-austria.comand Ulrich Wiegel (Consulting Engineer, see www.icu-berlin.de). I found the article very interesting and speaking frankly very close to my own perceptions about the difficulties in addressing climate change issues. It also fits a lot with my previous post http://mavropoulos.blogspot.com/2011/10/urban-waste-management-and-climate.html.

Please enjoy it (unfortunately this is just a two pages abstract of a very important article that is too long to be published in my blog - but I tried to keep the fruitful thoughts and key-messages of the authors).


"The problem is not with waste, but with climate…-how perception influence behaviour
Both solid waste and greenhouse gases are “wastes” in a broad sense, one solid, the other gaseous. The first is perceived with our senses, the other not. Solid waste is accessible to all the senses: we see, feel, smell – and even hear it, once the garbage truck arrives. The essential greenhouse gases of methane, nitrous oxide and carbon dioxide are outside our sensory capacities: invisible, odourless – and, moreover are disposed of at virtually zero cost, even allowing for the current European carbon trade system. We simply dump the gaseous garbage into the “air ocean” on the bottom of which we live.
About 250 kg of household and commercial garbage is generated per person per year. In addition, about the same amount of recyclable materials is separately collected, comprising: paper, glass, biowaste etc., altogether 500 kg of “waste” per person per year. The quantity of greenhouse gases (measured as CO2-equivalents, to which the various greenhouse gases are converted according to their relative impact) comes to about 10,000 kg of CO2-equivalents per person and year, or 10 tonnes, about 20 times the quantity of waste.
Although the green house management problem seems to be greater than the solid waste management problem, little attention has been laid on it.
Solid waste management became very quickly a major political and scientific issue in many countries worldwide, the last decades. In this sense, many technological achievements and policies have been implemented to minimize solid waste production and to limit adverse effects into the environment.
This quick response in the solid waste sector was a consequence of the following three factors: the negative impacts of improper waste treatment were quickly felt (e.g. groundwater pollution caused by dumpsites), and prompted action to be taken. Secondly, waste – through its sensory qualities – is present to some degree in everyone´s mind on a day-to-day basis – this increased the political priority to deal with it. Thirdly, the adoption of environmentally friendly waste treatment has enabled tangible environmental benefits to be quickly realised.
However, all these mechanisms do not apply to CO2-waste: damages occur only following considerable delay and are not locally connected to the source. This, together with the fact that CO2-waste cannot be perceived “sensorily”, has resulted in less intense countermeasures being taken.
It is clear that CO2-waste management depends on the existence of the problem in our perception. To be accustom this the following example is provided: If somebody throwing a noticeable piece of paper litter out their car window every two seconds for a minute, over one kilometre, resulting in 30 pieces of litter lying on the road, altogether maybe 150 g of waste that would be noticeable and annoying. If at the same time, the car has left behind 150 g CO2 over the one kilometre “on the road” via its exhaust that would not be noticeable and therefore not being annoying– so it does not exist in our perception.
On further reflection, if CO2 were solid, the greenhouse gases management problem would have already become a major issue some 80-100 years ago, with the rapid expansion of electricity production and industrialization. Surrounded by rising CO2-ash heaps from these activities, the notion to transport a human body weighing around 100 kg using a vehicle weighing more than 1,000 kg, thus a payload of less than 10 % of the total mass, resulting in more than 90 % energy loss, which is clearly too high as a proportion of energy inherent in the system, would have been promptly rejected.
We have after all direct experience of the banning of forms of energy consumption that produced atmospheric pollution which is obvious, we could see smell, and even taste it, and in terms of fatalities: in most of Europe in the middle of the last century laws were introduced to limit particulate atmospheric pollution (‘smog’) through smoke control. Within a few years people willingly gave up burning coal to heat their houses and water, because they could see both the problem and the benefits of action.
For these reasons CO2-waste management has been developed with considerable lower rates than the solid waste management sector. It is characteristic in the case of Austria that although a number of measures, introduced in a successive 10 years period, have already solved the waste ‘problem’ by nearly 100%, a reduction within 30 years of fossil-based greenhouse gas by 16% has only been announced.

Recycling is easy and makes us feel good – avoidance is hard and an annoyance

Another important difference between solid waste management and CO2-waste management is that the first is largely based on Recycling and the second is base on Avoidance. Recycling does not work with CO2-waste which final and only option is disposal-either by conventional dumping into the ‘air ocean’ or by innovative subterranean storage. So, a fundamental partial solution for reducing CO2-waste is avoidance and that means abstaining from consumption, which people are reluctant to do because they love convenience, and because they do not suffer enough immediately from the problem.
With over 100 years of increasing CO2 output, the unspoken assumption has been made that its disposal would not cause environmental damage. Until science could at long last agree that there would be any damage at all, technology and society developed into a state of enormous – because of its free-of-cost – CO2-waste production. The acknowledgement of the damage, and acceptance of the soon-to-be enforced CO2-levies will be, unlike for solid waste, clearly more difficult, as a) the damage is a future damage, is not clearly defined and not locally felt b) the existing social and economic system would be hit hard – one may imagine that all 10 tons CO2 per person per year would be charged per tonne analogous to waste treatment with say 100 € (which is the cost for one tonne of avoided CO2 for renewable energy technologies) and c) for this investment no reliable and auditable outcome can be assured.
At this point a philosophical consideration of the avoidance issue is necessary: Although technical innovations are important to avoid CO2-waste a society-wide ‘value change’ is rather critical to be achieved.
It is obvious that as humans – apart from the securing of our basic survival needs – we ultimately aim for one thing: to be happy (according to competent studies “happiness” is the least common human condition by the way, and not attainable by directly trying). Now, happiness is a condition that exists only in our minds and is generated in essence by ourselves and our emotional response to external influences.
In this direction ‘Low energy happiness generation behavior’ is consider a key factor leading to climate protection. This means that, if we can produce in ourselves the same level of happiness with reduced material and energy consumption, it can be referred to as climate friendly happiness. The initially noticeable satisfaction “loss” caused by abstention and effort is counterbalanced by the satisfaction “benefit” caused by the certainty of “doing the right thing”. This has already been achieved with waste. If we were able to imagine greenhouse gases “materialized” in solid form we would be able to create within us an increasingly greater sense of happiness from the initially unpleasant sacrifice associated with “doing without”.
On the other hand we realize that in the waste sector we have – with the participation of the broader community and developments in technology and organizational framework – been able to achieve something which, at the end of the seventies, was also unimaginable. In the area of climate protection, technology, while vitally important, will not provide the whole answer; the challenge remains to shift our philosophical basis and value set. Only then will meaningful and efficient outcomes be achievable.
The technical/scientific knowledge for implementing a climate-related change of values is available and is gathering momentum. It is now a priority to keep this change of values in our conscience, and to increase its perceived importance. In the area of climate protection, technology, while vitally important, will not provide the whole answer; the challenge remains to shift our philosophical basis and value set."










12.09.2011

Ecological behaviour and commitment to the environment

This is from Science for Environment Policy, an EC service, issue 265, December 2011.
"Researchers have used the psychological concept of ‘commitment’, normally used to understand relationships between people, to investigate our relationship with the environment. The results indicate that an individual’s commitment to the environment is important in their ecological behaviour, for example, their willingness to use public transport and make sacrifices for the environment.

Human behaviour is central to the exacerbation, mitigation and adaptation of various environmental issues, particularly climate change. As such, many policymakers are seeking insight into the psychological processes that influence pro-environmental behaviour, in order to inform policies that address detrimental behaviours and promote positive behaviours.
The concept of ‘commitment’ is rooted in the theory of relationships with people. It essentially describes feelings of attachment and a long term orientation in thinking about the relationship. The theory proposes that an individual’s commitment to their partner is predicted by their satisfaction with the relationship, their investment in the relationship and the other alternatives that exist to this relationship.

This study took this concept of commitment to try to understand human relationships with the environment. It developed environment-specific measures of commitment and its three predictors: satisfaction, investment and alternatives. The satisfaction measure focussed on an individual’s reward from spending time in the natural environment and investment looked at the involvement and effort people put into the environment. The measure of alternatives investigated the presence of other ways in which people could enjoy themselves and spend time, other than in the natural environment.

The study examined the relationships between these concepts by analysing the scores of 248 university students in the USA on these measures. It also included several other relevant measures, such as environmental identity, which assesses the degree to which individuals associate themselves with the environment, general environmentally friendly behaviour, such as public transport use and buying ecological products, and willingness to sacrifice for the environment, which assessed an individual’s willingness to sacrifice their own needs in order to improve the environment.

The analysis revealed that both the participants’ who had satisfaction with the environment and invested in the environment were more likely to be committed to the environment.
However, their perception of alternatives was not related to commitment. Commitment to the environment does not mean that an individual is not attached to other activities and places, in the same way that romantic attachment excludes relationships with other people. Therefore the predictor of ‘alternatives’ may not be so relevant in the environmental context.

Further analysis indicated that individuals with commitment to the environment said that their behaviour was pro-environmental and that they make sacrifices for the environment.
The research identified some interesting relationships between humans and the environment, although none of them were proven to be causal, i.e. it is not certain that commitment leads to pro-environmental behaviour or willingness to sacrifice. However, a greater understanding of these concepts could eventually provide insight into what influences an individual to develop long-term commitment to the environment, rather than making short-term decisions based on one’s own needs. This could potentially inform policy that seeks to encourage long-term and committed relationships to the environment."

For more: Davis, J.L., Le, B. & Coy, A.E. (2011) Building a model of commitment to the natural environmental to predict ecological behaviour and willingness to sacrifice. Journal of Environmental Psychology. 31(3): 257-265.

12.02.2011

I am just 4,74 persons away!

After some weeks away, I am back to blog again. I just finished a long travelling schedule (actually I am on my way back home) and few minutes ago I was reading something really important, that I would like to share with my readers.

I am sure that most of you are familiar with the term "six degrees of separation". In case you are not, this is a study made in 1967 by the psychologist Stanley Milgram. He asked 296 volunteers to send a message by postcard, through friends and then friends of friends, to a specific person in a Boston suburb. He discoovered that on average, using 6 persons as intermediate points, they finally made it, although they had no idea of the address of the person. The result of the study was that our world, even in 1967, was interconnected. Using friends of your friends, with six steps on average, you can contact almost anyone worlwide!

A new study, recently completed and based on Facebook data analysis, says that in our era the average steps required are reduced from 6 to 4,74!

The sample was 721 million Facebook users, more than one-tenth of the world’s population. The findings were posted on Facebook’s site Monday night (see http://www.facebook.com/data) .

The experiment took one month. The researchers used a set of algorithms developed at the University of Milan to calculate the average distance between any two people by computing a vast number of sample paths among Facebook users. They found that the average number of links from one arbitrarily selected person to another was 4.74. In the United States, where more than half of people over 13 are on Facebook, it was just 4.37.

As the researchers conclude “When considering even the most distant Facebook user in the Siberian tundra or the Peruvian rain forest a friend of your friend probably knows a friend of their friend.”

Just two comments from my side.

First the world is much more interconnected that we actually understand. And this is something that has not yet been utilized for the improvement of waste management, through massive social collaboration! As we have discovered working on the project "Globalization and waste management" with ISWA colleagues, it seems that interconnectivity and flow of ideas, trends and culture is a key-issue for the waste management practices in the most interconnected parts of our world, the megacities!

Second and last, this interconnectivity does not mean that the whole world is one. Changing the view, you can easily conclude that you will never reach the world without 5 more persons to act as intermediate media! Or, as Milgram said "the result could also be evidence of psychological distance: that we were actually, on average, five “worlds apart.”

6.18.2010

Industrial recycling networks

This is from "Science for Environment Policy", Issue 200, 17-6-2010,a periodical newsletter by DG Environment.

Recycling waste products between companies in industrial recycling networks can bring environmental and competitive benefits. A recent study on whether such networks can be used to advance sustainable development more broadly suggests companies first need a clear, shared network identity before other types of sustainability-oriented cooperation can take place.

'Industrial ecology' aims to reduce the environmental impact of industry by recycling by-products and waste from one company and using them as raw material inputs (resources) for another company. The concept of industrial ecology is modelled on natural ecosystems where all materials are recycled in an efficient and sustainable manner.

These industrial recycling networks can be considered a type of 'industrial symbiosis' (IS) project. Apart from providing economic benefits to all the firms involved, the environment also benefits from reduced raw material use, waste generation and emissions.

This study conducted a survey among companies from the general manufacturing sector of Austria, as well as firms belonging to recycling networks in Styria in Austria and Oldenburger Münsterland in Germany. It sought to understand whether IS projects can be used as a starting point for much wider cooperation amongst companies in terms of sustainable development. That is, whether they encourage further environmental protection and social responsibility activities.

The survey asked about the sustainability-related aspects of inter-company recycling activities and compared responses from companies within IS projects with companies that did not belong to such networks.

Surprisingly, companies belonging to the recycling networks passed on a
significantly lower percentage of waste products for recycling than companies in the general manufacturing sector (52 per cent for other companies compared with 39 per cent for the Styria network and 36 per cent for the Oldenburger Münsterland network).
In addition, companies that are partners in the recycling networks do not view their cooperation to be different to a regular customer relationship.

In particular, none of the companies from the Styria recycling network and only two companies from the Oldenburger Münsterland recycling network were aware that they were part of a wider waste recycling network. This implies that the companies view the recycling activities as a bilateral market relationship, rather than a shared value contributing to sustainable development.

Descriptions and charts can be used to understand the materials and energy flows for recycling purposes, but they do not reveal any information about the social level of the recycling networks. This study demonstrated there was no shared network 'identity' in the Styria or the Oldenburger Münsterland recycling networks.
In order for industrial networks to encourage new ideas about sustainability and become sustainability networks, it would be necessary to first create a network identity. From this a network vision of sustainability with common objectives could be developed.

Source: Posch, A. (2010). Industrial Recycling Networks as Starting Points for Broader Sustainability-Oriented Cooperation? Journal of Industrial Ecology. 14(2): 242-257.
Contact: alfred.posch@uni-graz.at

12.09.2009

Global warming: a public threat?

Contribution by George Sbokos (info@ecothesis.gr)

Dear Antonis,

thanks for delivering the ISWA White Paper Summary on Waste and Climate Change. I hope your message will be a part of the decision making proccess in Copenhagen. On the same day, the 7th of Dec. “…an important piece of news came from the U.S.: the Environmental Protection Agency found that the gases contributing to global warming threaten public health and opens the way for establishment of standards regardless of developments in Congress…”. So I first had to ask myself, how tight could the american evaluation range of the importance of global warming be, in order to be understood and manageable only as a "public threat".

Then I questioned if is it not a matter of a tight evaluation range. The Irak and Afganistan issue had to be labeled as a “terrorist threat” in order to legalize the bombardments, the H1N1 had to be upgraded to a “pandemie” in order to forward the use of untested vaccines. I came up to the conclusion that Bureaucracy and laws have to be neutralized, in order to move on with some political issues. In that meaning, “public threat” might be the key word to put the U.S. Congress off.

Even if so, that might be a "CHANGE WE CAN". I mean, till now we were only common to the famous words of President George Bush senior "the American lifestyle is non-negotiable", delivered to justify its refusal to participate in the first World Summit on Environment in Rio de Janeiro in 1992. Or the words of the George Bush junior administration in 2002, which refused to sign the Kyoto agreement on climate change and reiterated its refusal to the G8 Summit in July 2005, arguing that “the U.S. economy will be destroyed if we try to reduce emissions from industry to the levels indicated the Kyoto agreement”.

Consider, the world would only need 66,7 billions per anno to apply the goals against global warming. Consider, this amount is 12 times less than the money given to the banks last year. Consider, it represents the 2/3 of the annual worldwide military spending. Consider it is the ½ of the money given to advertisement (Le Monde, 6.12.2009).

Wish the best and raise your voice to an ambitious agreement in Copenhagen!

11.06.2009

Waste management after 2030

It seems that this presentation was a real hit. In ISWA's 2009 Lisbon congress and in HSWMA's 2009 Athens Conference the more or less same presentation created a huge effect between the audience and a plethora of congratulations.

Please allow me to thanks all people encouraging me to write a paper with the same title - I am already working on this.

In the meantime, my presentation is available at:

http://www.scribd.com/doc/22205324/The-Future-of-SWM

The main topics are:
Historic waste
Increasing Quantities
Changing composition of waste
Recycling and resource scarcity
Energy revolution
Robotics

All those are viewed and discussed according their waste management impacts

11.27.2008

Some thoughts regarding recycling and the famous “de-couple” approach

The starting point for the following note was the last news regarding the prices of recycled materials. A meltdown of them is more or less a reality going together with the rapid decrease in raw materials prize (by the way Mr. Newman deserves to be proud about his prediction).

Stuart Foster, of Recoup UK, which advises on plastic recycling, said that mixed plastics had slumped from about £200 a tone to the point of worthlessness in only four weeks. He was confident, however, that the low value would be temporary as at least three mixed-plastic facilities will open next year, reducing the nation's dependence on Chinese demand.

Decrease of prices seems to be uniform in all kinds of recyclables. Although there are some predictions that this will not be a permanent situation, in any case the current market conditions create a heavy burden for recycling activities.

As Lewis Smith wrote at TIMES (6-11-2008) “Thousands of tones of rubbish collected from household recycling bins may have to be stored in warehouses and former military bases to save them from being dumped after a collapse in prices.

Collection companies and councils are running out of space to store paper, plastic bottles and steel cans because prices are so low that the materials cannot be shifted. Collections of mixed plastics, mixed paper and steel reached record levels in the summer but the “bottom fell out of the market” and they are now worthless. The plunge in prices was caused by a sudden fall in demand for recycled materials, especially from China, as manufacturers reduced their output in line with the global economic downturn.

Local authorities and collection companies are so concerned about the mountains of paper, plastic bottles and cans that they have to store that they have called for storage regulations to be eased.”

The threat of landfilling recycled materials is realized in some cases as in California. The California Integrated Waste Management Board (CIWMB) is pledging to work with California cities and counties, as well as the many recyclers, brokers, and processors who are trying to cope with the rapid decline in commodity prices for recycled paper, metals and plastic goods.

CIWMB staff are monitoring market trends and prices and examining regulatory and non-regulatory options to keep these materials from being disposed. The CIWMB will hold a special public meeting in Sacramento in early December to explore measures it can enact to ease the current situation. The Board will hear from brokers and others about possible short-term and long-term solutions.

"We're aware of the potential dilemma facing our state's recycling infrastructure," said Board Chair Margo Reid Brown. "We cannot undo the incredible progress our local cities and counties have done to reduce our waste in landfills. By working together, I'm confident we can develop short-term measures that will get us through these challenging times, while ensuring we remain true to our overall environmental goals."

Now let’s move to the famous “de-couple” approach. We are all familiar with the concept of de-coupling growth of economy from waste production. In practical terms, the de-couple approach says that we do not want to put economic growth in a risk but we must try to make it more sustainable.

The EU approach has gone further determining that in order to success on that approach we have to decouple the following:

· Economic growth from resource use (having more growth for less resource use or more products per resource units)
· Environmental impacts from resource use (having less impacts for more growth or less impacts per product units)

Obviously for both the previous requirements the use of recycling materials is a key- element.

But how this fundamental role of recycling can be fulfilled when the use of recycled materials is coupled with their prices?

How can we de-couple growth from resource use when we keep the use of recyclables coupled with the market conditions and market conditions (even temporarily) push to more resource use?

How can de-couple the environmental impacts from resource use when the market conditions will determine if the supply chain of a product will include recyclables or not?

Let’s think again about the market fluctuations and their economical, environmental and long-term impacts in our industry. Maybe we have to regulate recycling prices in order to promote the use of recyclables. Or maybe we have to forget de-couple as a concept.

In any case, this is the time to think about it in all levels. Any opinion is welcomed…