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Removal of hydrogen sulfide by complete aerobic oxidation in acidic biofiltration

Paper ID Volume ID Publish Year Pages File Format Full-Text
35396 45088 2011 9 PDF Available
Title
Removal of hydrogen sulfide by complete aerobic oxidation in acidic biofiltration
Abstract

Anaerobic treatment of sulfate-rich wastewater from concentrated rubber latex industry results in high hydrogen sulfide (H2S) in the biogas, which is odorous, toxic, and corrosive to equipment. The effects of retention time (RT) and air mix ratio on the performance and kinetics of the aerobic biofilm reactor in H2S removal were assessed. It was found that H2S removal efficiency increased with increasing air mix ratio and RT. Under a 1:4 biogas-to-air ratio, the system could achieve average removals of 94.7%, 87.3%, 85.6% at RT of 160, 80 and 40 s, respectively. Our biofilter system showed a maximum elimination capacity (ECmax) of 256.4 g/m3/h in our kinetics study. When operated with the acidic wastewater discharged from concentrated rubber factory, the system gave an equivalent performance to that operated with synthetic liquid. Results also revealed that some undesirable methane oxidation had occurred in the biofilter bed. Furthermore, types of the liquid used apparently affected the dominant microbial species in the bed. Although the middle portion of biofilter bed contained fewer microorganisms, H2S could still efficiently be converted to sulfuric acid that could potentially be reused in the concentrated rubber latex industry.

Keywords
Biofilter; Hydrogen sulfide; Biogas; Kinetics; Sulfuric acid; Rubber
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Removal of hydrogen sulfide by complete aerobic oxidation in acidic biofiltration
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 46, Issue 1, January 2011, Pages 344–352
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us