Process for the biological conversion of bisulphide into elemental sulphur

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United States of America Patent

PATENT NO 9902975
SERIAL NO

15115767

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Abstract

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The invention is directed to a process for the biological conversion of bisulphide into elemental sulphur, comprising the following steps: a) converting bisulphide as dissolved in an aqueous solution to elemental sulphur in the presence of sulphide-oxidizing bacteria and under anaerobic conditions to obtain a first liquid effluent comprising elemental sulphur and used sulphide-oxidizing bacteria; b) regenerating the used sulphide-oxidizing bacteria as obtained in step (a) and as comprised in an aqueous solution in the presence of an oxidant to obtain a second liquid effluent comprising regenerated sulphide-oxidizing bacteria; c) separating elemental sulphur from either the first and/or the second liquid effluent; d) using the regenerated sulphide-oxidizing bacteria in step (a) as the sulphide-oxidizing bacteria.

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Patent Owner(s)

Patent OwnerAddress
PAQELL B V3542 AD UTRECHT

International Classification(s)

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  • 2015 Application Filing Year
  • C01B Class
  • 1749 Applications Filed
  • 1349 Patents Issued To-Date
  • 77.13 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances201520162017201820192020202120222023202420250255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Janssen, Albert Joseph Hendrik Geldermalsen, NL 13 120
Klok, Johannes Bernardus Maria Amsterdam, NL 9 5
Van, Dijk Jan-Henk Amsterdam, NL 1 1
Van, Heeringen Gijsbert Jan Amsterdam, NL 13 122

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Patent Citation Ranking

  • 1 Citation Count
  • C01B Class
  • 31.00 % this patent is cited more than
  • 7 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges208429276101 - 1011 - 2021 - 3031 - 400255075100125150175200225250275300325350375400425450475

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