Biological treatment of spent caustics.

A.J.H. Janssen; C. Buisman; G. Lettinga; G. van Straten; J. Bontsema; J.G. Kuenen; J.M.M. de Zwart

Biological treatment of spent caustics.

A.J.H. Janssen (Inventor), C. Buisman (Inventor), G. Lettinga (Inventor), G. van Straten (Inventor), J. Bontsema (Inventor), J.G. Kuenen (Inventor), J.M.M. de Zwart (Inventor)

Research output: Patent

Abstract

A process for the biological treatment of a spent caustic solution containing sulphides is disclosed, wherein the solution is introduced into an aerobic reactor containing sulphide-oxidising bacteria, and the sulphides are partly converted to elemental sulphur and partly to sulphate by controlling the redox potential in the reactor at a value below -300 mV (against an Ag/AgCl reference electrode), or below -97 (against a H2 reference electrode). Also disclosed is process for the biological treatment of an aqueous solution containing sulphides and/or mercaptans in an aerobic reactor, wherein the solution is treated in the presence of bacteria of the new species Methylophaga sulfidovorans

Original language	English
Patent number	WO9804503
Priority date	29/07/96
Publication status	Published - 29 Jul 1996

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title = "Biological treatment of spent caustics.",

abstract = "A process for the biological treatment of a spent caustic solution containing sulphides is disclosed, wherein the solution is introduced into an aerobic reactor containing sulphide-oxidising bacteria, and the sulphides are partly converted to elemental sulphur and partly to sulphate by controlling the redox potential in the reactor at a value below -300 mV (against an Ag/AgCl reference electrode), or below -97 (against a H2 reference electrode). Also disclosed is process for the biological treatment of an aqueous solution containing sulphides and/or mercaptans in an aerobic reactor, wherein the solution is treated in the presence of bacteria of the new species Methylophaga sulfidovorans",

author = "A.J.H. Janssen and C. Buisman and G. Lettinga and {van Straten}, G. and J. Bontsema and J.G. Kuenen and {de Zwart}, J.M.M.",

note = "Aanvrager: Thiopac Sulfur Systems BV; WO9804503",

year = "1996",

month = jul,

day = "29",

language = "English",

type = "Patent",

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TY - PAT

T1 - Biological treatment of spent caustics.

AU - Janssen, A.J.H.

AU - Buisman, C.

AU - Lettinga, G.

AU - van Straten, G.

AU - Bontsema, J.

AU - Kuenen, J.G.

AU - de Zwart, J.M.M.

N1 - Aanvrager: Thiopac Sulfur Systems BV

PY - 1996/7/29

Y1 - 1996/7/29

N2 - A process for the biological treatment of a spent caustic solution containing sulphides is disclosed, wherein the solution is introduced into an aerobic reactor containing sulphide-oxidising bacteria, and the sulphides are partly converted to elemental sulphur and partly to sulphate by controlling the redox potential in the reactor at a value below -300 mV (against an Ag/AgCl reference electrode), or below -97 (against a H2 reference electrode). Also disclosed is process for the biological treatment of an aqueous solution containing sulphides and/or mercaptans in an aerobic reactor, wherein the solution is treated in the presence of bacteria of the new species Methylophaga sulfidovorans

AB - A process for the biological treatment of a spent caustic solution containing sulphides is disclosed, wherein the solution is introduced into an aerobic reactor containing sulphide-oxidising bacteria, and the sulphides are partly converted to elemental sulphur and partly to sulphate by controlling the redox potential in the reactor at a value below -300 mV (against an Ag/AgCl reference electrode), or below -97 (against a H2 reference electrode). Also disclosed is process for the biological treatment of an aqueous solution containing sulphides and/or mercaptans in an aerobic reactor, wherein the solution is treated in the presence of bacteria of the new species Methylophaga sulfidovorans

M3 - Patent

M1 - WO9804503

ER -

Biological treatment of spent caustics.

Abstract

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