On 6/12/2016 11:37 PM, Rod Speed wrote:


"newshound" wrote in message
o.uk...
On 6/12/2016 7:52 PM, Tim Watts wrote:
On 12/06/16 15:18, Brian-Gaff wrote:
Several messages both on Usenet and from people I know seem to suggest
that
most recycling or waste sites run by councils won't take plasterboard,
saying its a hazard. Excuse me, but my ceilings are made of the stuff,
if it
was in any way dangerous, we surely should have figured this out by
now!
Maybe its just hazardous to the machinery that crunches everything
up....
Brian


The principle reason is (apparently) it reacts with certain food wastes
to produce hydrogen sulphide (aka stink bombs) - however, the gas is
toxic in sufficient concentrations.

Don't dispute that H2S might be the argument, but I'm not sure of the
logic. Yes, it's toxic and the problem, indoors, is that you smell it
very easily at a safe concentration but then the nose gets saturated
(or something), and you don't smell it any more, and you die. But
certainly until the 1960's every decent school chemistry lab had a
Kipps Apparatus (and had done for 100 years) and I don't recall
hearing of any fatalities.

There have been a few with ships and sewer facilities in ships etc.


Oh I could well believe that, those are real confined spaces. My point
is that H2S slowly percolating to the surface of a landfill site is just
a non-issue.