Investigation of Sulfate Reducing Bacteria for Treatment of Wastewaters Polluted by Heavy Metals

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Kakavand, Nargess | 2016

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 49338 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Kariminia Hamedani, Hamid Reza; Borghei, Mehdi
Abstract:
The main objective of this research was to evaluate the application of a new strain of Brevundimonas naejangsanensis which is newly identified sulfate-reducing bacteria (SRB), in chromium(VI) removal in contaminated wastewater. A laboratory scale packed bed reactor (PBR) was fabricated and operated to study the bacteria’s feasibility on chromium(VI) reduction and removal. The reactor was packed with polyurethane foam cubes and operated under different feeding and operating conditions of HRT, COD/〖SO〗_4^(2-) ratio and influent chromium(VI) concentration. A maximum chromium removal of 94.6% was achieved in the PBR when operated at an HRT of 24 h with COD/〖SO〗_4^(2-) ratio of .70 and influent chromium(VI) concentration of 30ppm
Keywords:
Packed bed Reactor (PBR) ; Synthetic Wastewater ; Sulfate Reduction Bacterias ; Waste Treatment ; Heavy Metals Removal ; Chromium (VI)Removal

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