Natural Science Forum / Chemistry / Organic Synthesis / July 2005

Why you need do that? It could be a waste of energy. Do you want it for
a organic synthesis laboratory reaction? Or a biological-geochemical
procces? In the second, you could use sulfate reducers bacteria as
desulfotomaculum or desulfobacter. But......
A.

Iodine salts will reduce sulphates to sulphids by distillation of the
I2  but the reaction is pretty messy, lots of sulphits, H2S and SO2
produced and distilled at the same time, another reaction would be
direct fusion with carbon this tends to give carbon disulphid that can
be converted to elemental sulpher thru a reaction I can't quite remeber
right now I would question though, what do you wish to recover from
this copper sulphate solution? is the sulpher (are you looking at an
isotope of sulpher?) or just the copper, whitch you can just extract
with electralosis?