Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 35931
Title Biological treatment of spent caustics.
Author(s) Janssen, A.J.H.; Buisman, C.; Lettinga, G.; Straten, G. van; Bontsema, J.; Kuenen, J.G.; Zwart, J.M.M. de
Source Octrooinummer: 96202138.2-2104, verleend: 1996-07-29.
Department(s) Agricultural Engineering and Physics
Sub-department of Environmental Technology
WIMEK
PE&RC
Publication type Patent
Publication year 1996
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
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