Sulfide removal by moderate oxygenation of anaerobic sludge environments

Bioresource Technology
F P van der ZeeF Fdz-Polanco

Abstract

Introduction of a limited amount of oxygen to anaerobic bioreactors is proposed as a simple technique to lower the level of sulfide in the biogas. This paper presents the results of a bioreactor study and of batch experiments that were performed to obtain better insight into the fate of sulfur compounds and oxygen during micro-aerobic sulfide oxidation. Introduction of a low airflow (0.7-0.9 m(3)m(-3)d(-1), corresponding to an O(2)/S molar ratio of 8-10) to a fluidized bed reactor fed with low-sulfate vinasse was sufficient to reduce the biogas H(2)S-content to an undetectable level. Sulfide was initially oxidized to elemental sulfur, thiosulfate and - most probably - polysulfide. Significant sulfate production did not occur. Bioreactor sludge sampled from the reactor after three weeks' micro-aerobic operation was much faster in oxidizing sulfur than bioreactor sludge sampled during fully anaerobic reactor operation. The reaction proceeded faster with increasing O(2)/sulfide ratios.

References

Feb 5, 2003·Environmental Science & Technology·Frank P van der ZeeJim A Field
Apr 15, 2003·Water Research·Samir Kumar Khanal, Ju-Chang Huang
Aug 5, 1995·Biotechnology and Bioengineering·A J JanssenG Lettinga

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Citations

Aug 24, 2011·Applied Microbiology and Biotechnology·Elisa RodríguezPedro A García-Encina
Oct 7, 2009·Environmental Technology·Heikki SärkkäMika Sillanpää
Jun 8, 2014·Bioresource Technology·I RamosM Fdz-Polanco
Jul 25, 2009·Water Research·Guangming JiangZhiguo Yuan
Feb 24, 2015·Biotechnology Advances·Dana Pokorna, Jana Zabranska
Feb 24, 2015·Applied Microbiology and Biotechnology·Petr DolejsJan Bartacek
Nov 5, 2016·Applied Biochemistry and Biotechnology·Xi LiWenju Jiang
Jun 29, 2016·Environmental Technology·José Tavares de SousaWilton Silva Lopes
Jun 23, 2009·Bioresource Technology·Toru Matsui, Shigeru Imamura
Jan 10, 2017·Anaerobe·P JeníčekJ Bartáček
Dec 1, 2006·Applied Microbiology and Biotechnology·Sergio BordelSantiago Villaverde
Feb 17, 2018·Environmental Technology·Priscila Rosseto CamilotiDavid Jeison
Dec 20, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Lucie Pokorna-KrayzelovaJan Bartacek
Jan 11, 2020·The Science of the Total Environment·Qing ChenZihao Zhao

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