Chinese develop e-waste technology

Feb 15, 2007

Chinese scientists say they have developed a recycling and recovery technology designed especially for disposal of printed circuit boards.

Zhenming Xu and colleagues at Shanghai Jiao Tong University said printed circuit boards are an ideal target for recycling and reuse since they 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.

Such boards contain materials potentially toxic if released to the environment, but they are also a rich potential source of valuable metals and other materials that could be recovered and reused.

The researchers say the technology they developed involves special crushing of scrap boards, followed by separation of the metallic and non-metallic materials with an electric field. The scientists say the technique has advantages over other methods proposed for recycling printed circuit boards.

The process is described in the current issue of the journal Environmental Science & Technology.

Copyright 2007 by United Press International

Explore further: Austrian computer visionary Zemanek dies aged 94

add to favorites email to friend print save as pdf

Related Stories

3D printer to fly to space in august, sooner than planned

Jun 13, 2014

A 3-D printer intended for the International Space Station has passed its NASA certifications with flying colors—earning the device a trip to space sooner than expected. The next Dragon spacecraft, scheduled ...

Scientists developing electronic skin

May 30, 2014

Once a topic explored exclusively in science fiction, the notion of restoring sensory feelings to humans and to machines is now approaching reality. Scientists around the world are developing artificial organs ...

The revolution will be printed in 3-D

May 16, 2014

Three-dimensional printing is an increasingly important tool for industry and research, and the terminology as well as the technology is creeping into the consumer market. But what is it? And how are UCLA ...

Circuits and sensors direct from the printer

Apr 30, 2014

Printers are becoming more and more versatile. Now they can even print sensors and electronic components on 2D and 3D substrates. A new, robot-assisted production line allows the process to be automated.

Recommended for you

FX says overnight ratings becoming meaningless

3 hours ago

(AP)—It's a rite nearly as old as television: the morning after a new show premieres, network executives wait impatiently for the Nielsen company's estimate of how many people watched, and rush to report ...

UK: Former reporter sentenced for phone hacking

5 hours ago

(AP)—A former British tabloid reporter was given a 10-month suspended prison sentence Thursday for his role in the long-running phone hacking scandal that shook Rupert Murdoch's media empire.

Evaluating system security by analyzing spam volume

5 hours ago

The Center for Research on Electronic Commerce (CREC) at The University of Texas at Austin is working to protect consumer data by using a company's spam volume to evaluate its security vulnerability through the SpamRankings.net ...

User comments : 0