This study investigated the biological removal of hydrogen sulfide (H2S) from biogas by anaerobic wastewater treatment processes. Heterotrophic and autotrophic bacteria were isolated from upflow anaerobic sludge blanket (UASB)-mixed liquor of fruit processing factory using nutrient broth and thiosulfate mineral salt medium, respectively. Hydrogen sulfide-removal activities were investigated using sterile UASB-mixed liquor and hydrogen sulfide as growth substrates. It was found that the growth rate of autotrophic bacteria (319 mg VSS l−1 day−1) was higher than that of the heterotrophic bacteria (267 mg VSS l−1 day−1). Hydrogen sulfide(g) was totally removed by absorption into liquid phase: 78·24% removal of aqueous sulfide (S2−(aq)) was achieved by autotrophs and 68·03% by heterotrophs. Molecular identification by polymerase chain reaction-denaturing gradient gel electrophoresis technique and DNA sequencing showed that heterotrophic consortium consisted of Pseudomonas fluorescens Pf0-1, P. aeruginosa PAO1, P. putida KT2440, Bacillus megaterium DSM319 and B. cereus ATCC14579. Autotrophic consortium consisted of Thiobacillus thioparus NZ, T. denitrificans ATCC25259 and Halothiobacillus neapolitanus c2.
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December 2015
Research Article|
October 27 2015
Hydrogen sulfide removal by bacteria from upflow anaerobic sludge blanket
Walailuk Doungprasopsuk, MEng;
Walailuk Doungprasopsuk, MEng
*
Doctoral Student, Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok, Thailand
*Corresponding author e-mail address: g5417500267@ku.ac.th
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Patcharaporn Suwanvitaya, MApplSc
Patcharaporn Suwanvitaya, MApplSc
Associate Professor, Department of Environmental Engineering, Faculty of Engineering, Kasetsart University, Bangkok, Thailand
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*Corresponding author e-mail address: g5417500267@ku.ac.th
Publisher: Emerald Publishing
Received:
April 28 2015
Accepted:
October 26 2015
Online ISSN: 2045-9866
Print ISSN: 2045-9858
ICE Publishing: All rights reserved
2015
Bioinspired, Biomimetic and Nanobiomaterials (2015) 4 (4): 213–222.
Article history
Received:
April 28 2015
Accepted:
October 26 2015
Citation
Doungprasopsuk W, Suwanvitaya P (2015), "Hydrogen sulfide removal by bacteria from upflow anaerobic sludge blanket". Bioinspired, Biomimetic and Nanobiomaterials, Vol. 4 No. 4 pp. 213–222, doi: https://doi.org/10.1680/jbibn.15.00005
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