Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: Spray on Cu news

From: "docstein99" <docstein99@...>
Date: 2007-06-28

> 10 gallon fermenting carboy. I'm no chemist, and except for the
issues
> with copper as mentioned by other posters, I don't think a few ounces
> of FeCl3 now and then compare with the rest of the daily crap we
> polute our septic systems with.

Sewage treatment plants use ferric chloride in the process before the
water is dumped back into a river or ocean.