Biological treatment of toxic refinery spent sulfidic caustic at low dilution by sulfur-oxidizing fungi

2018 ◽  
Vol 6 (2) ◽  
pp. 2762-2767 ◽  
Author(s):  
Sevan Gholipour ◽  
Pouya Mehrkesh ◽  
Ehsan Azin ◽  
Hoda Nouri ◽  
Abbas Abbas Rouhollahi ◽  
...  
Keyword(s):  
Biological Treatment ◽  
Spent Sulfidic Caustic ◽  
Sulfur Oxidizing ◽  
Sulfidic Caustic

Characteristics of nitrogen removal and microbial distribution by application of spent sulfidic caustic in pilot scale wastewater treatment plant

2010 ◽  
Vol 62 (8) ◽  
pp. 1965-1965
Author(s):  
S. Park ◽  
J. Lee ◽  
J. Park ◽  
I. Byun ◽  
T. Park ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Pilot Scale ◽  
Microbial Distribution ◽  
Spent Sulfidic Caustic ◽  
Sulfidic Caustic

Publisher‘s note. We regret that the published version of this article erroneously denoted the first author as corresponding author; in fact the formal corresponding author of this paper is Professor Taeho Lee, whose address is repeated below.

Biotreatment of Refinery Spent-Sulfidic Caustic Using an Enrichment Culture Immobilized in a Novel Support Matrix

2000 ◽  
Vol 84-86 (1-9) ◽  
pp. 707-720 ◽  
Author(s):  
Julie A. Conner ◽  
Robert R. Beitle ◽  
Kathleen Duncan ◽  
Ravi Kolhatkar ◽  
Kerry L. Sublette
Keyword(s):  
Enrichment Culture ◽  
Spent Sulfidic Caustic ◽  
Support Matrix ◽  
Sulfidic Caustic

Removal of hydrogen sulfide from an anaerobic biogas using a bio-scrubber

1997 ◽  
Vol 36 (6-7) ◽  
pp. 349-356 ◽  
Author(s):  
Sosuke Nishimura ◽  
Motoyuki Yoda
Keyword(s):  
Hydrogen Sulfide ◽  
Simulation Model ◽  
Biological Treatment ◽  
Gas Flow ◽  
Treatment Process ◽  
Aeration Tank ◽  
Wastewater Treatment Process ◽  
Bubble Tray ◽  
Sulfur Oxidizing ◽  
Biological Treatment Process

A novel biological treatment process for removing hydrogen sulfide from anaerobic biogas using a bio-scrubber has been developed. The treatment process is composed of a gas/liquid contact tower and an aeration tank. The biogas from an anaerobic wastewater treatment process is introduced into a multiple-bubble-tray contact tower (bio-scrubber) and scrubbed with activated sludge liquor from an aeration tank. The sludge liquor containing sulfides is then returned to the aeration tank, where the sulfide is oxidized to sulfate by sulfur-oxidizing bacteria such as Thiobacillus. The contact tower is designed to be air tight in order to prevent air from mixing into the biogas used as a fuel. A simulation model was developed to calculate effluent gas concentrations from the contact tower, incorporating input parameters such as influent hydrogen sulfide concentrations, gas flow rates, and gas/liquid ratios. Using the simulation model, design criteria were calculated and a full-scale plant for treating biogas from a UASB process for potato processing wastewater was constructed. The data shows that the hydrogen sulfide in the biogas was effectively reduced from 2,000 ppm to less than 20 ppm.

Microbial community analysis in the autotrophic denitrification process using spent sulfidic caustic by denaturing gradient gel electrophoresis of PCR-amplified genes

2011 ◽  
Vol 63 (3) ◽  
pp. 475-483 ◽  
Author(s):  
J. -H. Lee ◽  
S. -M. Lee ◽  
G. -C. Choi ◽  
H. -S. Park ◽  
D. -H. Kang ◽  
...  
Keyword(s):  
Microbial Community ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Carbon Sources ◽  
Community Analysis ◽  
Microbial Community Analysis ◽  
Autotrophic Denitrification ◽  
High Concentration ◽  
Spent Sulfidic Caustic ◽  
Gradient Gel Electrophoresis ◽  
Sulfidic Caustic

Spent sulfidic caustic (SSC) produced from petrochemical plants contains a high concentration of hydrogen sulfide and alkalinity, and some almost non-biodegradable organic compounds such as benzene, toluene, ethylbenzene and xylenes (BTEX). SSC is mainly incinerated with auxiliary fuel, leading to secondary pollution problems. The reuse of this waste is becoming increasingly important from economic and environmental viewpoints. To denitrify wastewater with low COD/N ratio, additional carbon sources are required. Thus, autotrophic denitrification has attracted increasing attention. In this study, SSC was injected as an electron donor for sulfur-based autotrophic denitrification in the modified Ludzack-Ettinger (MLE) process. The efficiencies of nitrification, COD, and total nitrogen (TN) removal were evaluated with varying SSC dosage. Adequate SSC injection exhibited stable autotrophic denitrification. No BTEX were detected in the monitored BTEX concentrations of the effluent. To analyse the microbial community of the MLE process, PCR-DGGE based on 16 S rDNA with EUB primers, TD primers and nirK gene with nirK primers was performed in order to elucidate the application of the MLE process to SSC.

The feasibility of using spent sulfidic caustic as alternative sulfur and alkalinity sources in autotrophic denitrification

2005 ◽  
Vol 22 (6) ◽  
pp. 910-916 ◽  
Author(s):  
Im-Gyu Byun ◽  
Ju-Hyun Ko ◽  
Young-Rok Jung ◽  
Tae-Ho Lee ◽  
Chang-Won Kim ◽  
...  
Keyword(s):  
Autotrophic Denitrification ◽  
Spent Sulfidic Caustic ◽  
Sulfidic Caustic
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