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New E-waste Recycling Technology

Date:
February 20, 2007
Source:
American Chemical Society
Summary:
With megatons of obsolete personal computers, old cell phones and other waste electrical and electronic equipment piling up every year, scientists in China report development of a much-needed new recycling and recovery technology for one of the most troublesome components of e-waste -- printed circuit boards (PCBs).

With megatons of obsolete personal computers, old cell phones and other waste electrical and electronic equipment piling up every year, scientists in China report development of a much-needed new recycling and recovery technology for one of the most troublesome components of e-waste — printed circuit boards (PCBs).

In a report scheduled for the Feb. 15 edition of ACS' Environmental Science & Technology, a semi-monthly journal, Zhenming Xu and colleagues point out that PCBs are an ideal target for recycling and reuse.

PCBs are self-contained modules of interconnected electronic components formed by a thin layer of conducting material deposited, or "printed," on the surface of an insulating board. They contain materials potentially toxic if released to the environment. However, PCBs also are a rich potential source of valuable metals and other materials that could be recovered and reused.

The researchers describe tests of their process on almost a half-ton of scrap PCBs, which showed that it is efficient and environmentally friendly. The technology involves special crushing of scrap PCBs, followed by separation of the metallic and non-metallic materials with an electric field. The technique has advantages over other methods proposed for recycling PCBs, the researchers indicate.


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The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Cite This Page:

American Chemical Society. "New E-waste Recycling Technology." ScienceDaily. ScienceDaily, 20 February 2007. <www.sciencedaily.com/releases/2007/02/070220034628.htm>.
American Chemical Society. (2007, February 20). New E-waste Recycling Technology. ScienceDaily. Retrieved September 16, 2014 from www.sciencedaily.com/releases/2007/02/070220034628.htm
American Chemical Society. "New E-waste Recycling Technology." ScienceDaily. www.sciencedaily.com/releases/2007/02/070220034628.htm (accessed September 16, 2014).

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