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Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
I have never seen a PC with selenium power rectifiers so if they exist they must be a very very rare combination. But the article is about e-waste, not PCs and I have seen selenium rectifiers in modern car battery chargers. So it could be that someone oversimplified the graphics by trying to pin everything on the picture of a PC instead of the appliances where they belong.
Old PC motherboards with NiCd batteries are not unusual. If the writer thinks that "Selenium in circuit boards as power supply rectifier" is good English then "Cadmium in circuit boards (as batteries)" may well be what the writer meant. It is not clear what the writer really meant but most interpretations you did in one direction can also be interpreted in the opposite way.
Here is a page on cobalt, it ranges from very benificial at small amounts, to not so nice at larger amounts. I have no idea how much cobalt is released when people start burning and crushing computers or other appliances so you may be completely correct, same applies to chromium.
Registered Member #103
Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
Ugh, e-waste can be pretty nasty. I wouldn't have really thought about it much if I hadn't found this pdf on another forum last year (attached)... Of course the relatively low amounts of these materials in computers wouldn't be a problem if they were recycled properly, but these people are taking on tons of waste and are resorting to the most basic and ancient methods of hammers, chisels, acid and fire to extract the valuable materials from waste (mostly computers) and burning or dumping the rest. The pictures really say a thousand words, it's a pretty grim sight ]1164800838_103_FT18498_technotrashfinalcomp.pdf[/
file]
... not Russel! Registered Member #1
Joined: Thu Jan 26 2006, 12:18AM
Location: Tempe, Arizona
Posts: 1052
Steve Conner wrote ...
I also have to inform that this is an emotive issue. You'll see it totally differently if you're a free-market libertarian, than if you're a European socialist, an electronics industry worker, a tofu munching hippie, or a Lagos slum dweller whose back yard turned into a 3 story pile of blazing 15" monitors overnight.
Haha, I almost spit coffee all over my keyboard when I read that. Too true. A lot of people might feel differently if there was a flaming pile of electronics in their town.
I don't know how things work elsewhere, but my community offers recycling facilities for e-waste. They make sure that things like old computers and CRTs are recycled and/or disposed of properly, rather than ending up in a landfill, or on a boat. It costs the town a little, but it ensures that people don't sneak CRTs into the landfill, or dump them in the woods. I guess if more places had similar programs, this wouldn't be as much of a problem.
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[moved] spontaneous rant ("E-waste")
