Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

E-waste trade ban won't end environmental threat

22.03.2010
Crude recycling methods used in developing countries contaminate air, water and soil

A proposal under debate in the U.S. Congress to ban the export of electronics waste would likely make a growing global environmental problem even worse, say authors of an article from the journal Environmental Science and Technology appearing online today.

The authors call into question conventional thinking that trade bans can prevent "backyard recycling" of electronics waste – primarily old and obsolete computers – in developing countries.

Primitive recycling processes used in these countries are dispersing materials and pollutants that are contaminating air, water and soil.

"Trade bans will become increasingly irrelevant in solving the problem,'' says Eric Williams, one of the authors of the article, which offers alternative ways to address the problem.

Williams is an assistant professor at Arizona State University with a joint appointment in the School of Sustainable Engineering and the Built Environment, a part of the Ira A. Fulton Schools of Engineering and the School of Sustainability.

Electronics waste – or e-waste – is often exported from the United States and other developed nations to regions in China, India, Thailand and less developed countries where recycling is done in a crude fashion.

To recover copper from e-waste, for instance, wires are pulled out, piled up and burned to remove insulation covering the copper. This emits dioxins and other pollutants.

Toxic cyanide and acids used to remove gold from circuit boards of junked computers also are released into the environment.

With the number of junked computers expected to triple in the next 15 years, the authors say, the problem will grow much worse if an effective remedy is not put in place in the near future.

The main approach to solving the backyard recycling problem has been to ban trade in e-waste. Some countries have officially banned e-waste imports, but in some cases, as in China, such legislation has pushed the trade to the black market.

Congress is debating House Resolution 2595, which would ban the export of e-waste from the United States.

"The underlying assumption of this bill and other trade bans is that most e-waste comes from outside developing nations, and that stopping trade with developed countries would cut off the supply of e-waste and stop backyard recycling," Williams says.

But authors of the Environmental Science and Technology article forecast that the developing world will generate more waste computers than the developed countries as soon as 2017, and that by 2025 the developing world will generate twice the amount of waste computers as what will come from developed nations.

"Rapid economic and population growth in developing countries is driving an increase in computer use in these parts of the world that is outpacing the implementation of modern and environment-friendly recycling systems," Williams says. " So without action, backyard recycling is certain to increase."

But he and his co-authors say even a complete global ban on trade in e-waste cannot solve the problem because it covers only a diminishing percentage of the overall supply of e-waste. They argue for direct action to reduce the harmful environmental impacts of backyard recycling.

One proposal is to pay backyard recyclers not to recycle.

"The idea is to let people first repair and reuse equipment, and only intervene to remove materials and components that would be environmentally hazardous when e-waste would be recycled using crude methods," Williams says. "Such a system looks to be an inexpensive way to maintain jobs in recycling operations and maintain access to used computers while protecting the environment."

Williams' co-authors are:

Jinglei Yu, yujingleink@gmail.com and Meiting Ju, jumeit@nankai.edu.cn, Department of Environmental Science and Engineering, Nankai University, Tianjin, China,

Yan Yang, School of Sustainable Engineering and the Built Environment, Arizona State University, Tempe, Ariz. Yan.Yang.1@asu.edu

The article can be found online at: http://dx.doi.org/10.1021/es903350q

SOURCE:
Eric Williams, ericwilliams@asu.edu
Assistant Professor
School of Sustainable Engineering and the Built Environment
(480)727-6259
MEDIA CONTACT:
Joe Kullman, joe.kullman@asu.edu
(480) 965-8122 direct line
(480) 773-1364 mobile
Ira A. Fulton Schools of Engineering
Arizona State University
Tempe, Arizona USA
http://engineering.asu.edu/

Joe Kullman | EurekAlert!
Further information:
http://www.asu.edu
http://engineering.asu.edu/

More articles from Ecology, The Environment and Conservation:

nachricht Bioinvasion on the rise
15.02.2017 | Universität Konstanz

nachricht Litter Levels in the Depths of the Arctic are On the Rise
10.02.2017 | Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung

All articles from Ecology, The Environment and Conservation >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

From rocks in Colorado, evidence of a 'chaotic solar system'

23.02.2017 | Physics and Astronomy

'Quartz' crystals at the Earth's core power its magnetic field

23.02.2017 | Earth Sciences

Antimicrobial substances identified in Komodo dragon blood

23.02.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>