[technologist]

Looking for Organic Sulphur removal processes from BioGas.
Reduction / Hydrogenation methods have failed on actual trials.
So, looking for oxidative conversion of Organic sulphur to <0.1 ppm.

[Alberto_Kravina]

Have you tried to hydrogenate the organic sulfur to H₂S and then remove the H₂S with I.E. NMP, Sulfolane/Diisopropanolamine or ethanolamine?
That is the only Method that comes into my mind....

[technologist]

I did it but it could remove from 100 to 10 ppm.
Remaining 10 ppm is not inorganic sulphur (Not appearing in the test as H2S, it is appearing in total S test).

[movies]

I think you can sometimes use peroxides or ozone and then wash out the resulting sulfoxides and sulfones.  It's not ideal, however, since those conditions are pretty harsh.

[proufs]

Have you tried refluxing with Raney nickel?

Sulfur is known to be a Raney nickel poision as it is "sponged up" in the porous structure of the catalyst structure.

If not, see the links below to get started and let me know if it's helpful and good luck!

http://pubs.acs.org/cgi-bin/abstract.cgi/jacsat/1943/65/i06/f-pdf/f_ja01246a005.pdf?sessid=6006l3

http://pubs.acs.org/cgi-bin/abstract.cgi/jacsat/1951/73/i02/f-pdf/f_ja01146a034.pdf?sessid=6006l3

http://www.freepatentsonline.com/6558533.html

http://www.orgsyn.org/orgsyn/orgsyn/prepContent.asp?prep=cv3p0176

[Donaldson Tan]

This might be useful!

title:
Removal of sulfur components from low sulfur gasoline using copper exchanged zeolite Y at ambient temperature

author:
David L. King and Liyu Lia
Pacific Northwest National Laboratory, P.O. Box 999, Richland, WA 99354, United States

Abstract:

Copper-exchanged zeolite Y has been shown to be an effective material for removal of a variety of sulfur species from hydrocarbon streams, and both monovalent (Cu(I)) and divalent (Cu(II)Y) materials have been claimed to be effective. In this work we discuss experiments aimed at providing a direct performance comparison between the two copper-containing materials. Cu(I)Y zeolite is somewhat more effective than Cu(II)Y in removing thiophene from various fuel blends. Capacity of both materials for thiophene diminishes markedly when aromatics and/or olefins are present, and Cu(I)Y immediately turns dark on exposure to such feeds. Both materials demonstrate ability to convert thiols to disulfides at ambient temperature.

Keywords:
Copper-exchanged zeolite; CuY; Cu(I); Cu(II); Desulfurization; Thiophene; Disulfides; Thiolate

Reference:
Catalysis Today, Volume 116, Issue 4 , 15 September 2006, Pages 526-529

[technologist]

Thanks All I will definitely go through them for usefullness.

Meanwhile any goof ref on performic acid use or H2O2 use.