Method for producing hydrogen sulphide and the use thereof, in particular, for depolluting heavy metal-containing flows
US7862721B2 · kind B2 · utility
8Cited by
9References
23Claims
0Family size
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Key dates
| Filing date | Aug 16, 2010 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Aug 16, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/912
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A process for the decontamination of an effluent containing one or more dissolved metals is provided. The process includes producing hydrogen sulphide in an aqueous medium by culturing alkaliphilic sulphate-reducing or thio-sulphate reducing bacteria in the presence of an organic compound serving as an electron donor and in the presence of a sulphurous compound serving as an electron acceptor. The effluent is contacted with the hydrogen sulphide and the dissolved metals are reduced and/or precipitated in the form of metal sulphides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.