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1. WO2000029605 - PROCESS FOR THE PRODUCTION OF HYDROGEN SULPHIDE FROM ELEMENTAL SULPHUR AND USE THEREOF IN HEAVY METAL RECOVERY

Publication Number WO/2000/029605
Publication Date 25.05.2000
International Application No. PCT/NL1999/000705
International Filing Date 16.11.1999
Chapter 2 Demand Filed 08.06.2000
IPC
C12P 3/00 2006.01
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
3Preparation of elements or inorganic compounds except carbon dioxide
CPC
C12P 3/00
CCHEMISTRY; METALLURGY
12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
PFERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
3Preparation of elements or inorganic compounds except carbon dioxide
Applicants
  • PAQUES BIO SYSTEMS B.V. [NL]/[NL] (AllExceptUS)
  • BUISMAN, Cees, Jan, Nico [NL]/[NL] (UsOnly)
  • DIJKMAN, Henk [NL]/[NL] (UsOnly)
Inventors
  • BUISMAN, Cees, Jan, Nico
  • DIJKMAN, Henk
Agents
  • DE BRUIJN, Leendert, C.
Priority Data
98203853.116.11.1998EP
98204462.029.12.1998EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) PROCESS FOR THE PRODUCTION OF HYDROGEN SULPHIDE FROM ELEMENTAL SULPHUR AND USE THEREOF IN HEAVY METAL RECOVERY
(FR) PROCEDE DE PRODUCTION DE SULFURE D'HYDROGENE A PARTIR DE SOUFRE ELEMENTAIRE, ET UTILISATION DE CE SULFURE DANS LA RECUPERATION DE METAUX LOURDS
Abstract
(EN)
A process was found for the conversion of elemental sulphur to hydrogen sulphide under ambient temperature and pressure. The biological hydrogen sulphide production process described is less expensive than both the chemical production of hydrogen sulphide and the biological hydrogen sulphide production from diluted sulphate containing waste water streams. Except for economical benefits also safety advantages exist compared to the chemical production of hydrogen sulphide, which is achieved at elevated temperature and pressure. The hydrogen sulphide produced can be used for the recovery of heavy metals.
(FR)
L'invention concerne un procédé de conversion de soufre élémentaire en sulfure d'hydrogène, à température et pression ambiantes. Le procédé de production biologique décrit est moins cher qu'à la fois la production chimique du sulfure d'hydrogène et la production biologique de celui-ci, à partir de courants d'eaux usées contenant du sulfate dilué. En dehors de cet avantage économique, il existe également un avantage relatif à la sécurité par rapport à la production chimique de sulfure d'hydrogène, laquelle s'effectue à température et pression élevées. On peut utiliser le sulfure d'hydrogène produit dans la récupération de métaux lourds.
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