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Innovative Biological Destruction of Hazardous Chlorinated and Brominated Volatile Disinfection By-products using Bio Trickling Filters

Mezgebe, Bineyam
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1515505465180454

Abstract Details

2017, PhD, University of Cincinnati, Engineering and Applied Science: Environmental Engineering.
Disinfection by products (DBPs) resulted from the reactions between the chlorine and natural organic substances which increased the formation of trihalomethanes (THMs). DBPs are carcinogens or have been known to cause health risks. Chloroform (CF) is the most abundant of all THMs with a maximum contaminant level (MCL) of 0.070 mg/L. In addition, CF and other THMs could also originate from sources other than by-products of water disinfection. Several physical and chemical removal methods are used to treat chloroform, which are expensive and could generate secondary pollutants. Biofiltration is one of the most proven technologies for volatile organic compound (VOC) control as it is environment–friendly, cost effective and releases fewer byproducts. In this study, an integrated technology was proposed. The integrated technology consists of nitrogen or air stripping followed by anaerobic or aerobic bio-trickling Filter (BTF). This study evaluated first CF only and secondly mixtures of THMs (CF and dichlorobromomethane (DCBM)). A co metabolite (ethanol) and surfactant (Tomadol 25 – 7) have been used to improve the biodegradation process. In addition, surfactin a bio surfactant was seeded within the BTF and its effectiveness has been investigated. Finally, microbial analysis was conducted to determine the dominant and responsible microbes for the BTFs performance.
George Sorial, Ph.D. (Committee Chair)
Ashraf Aly Hassan, Ph.D. (Committee Member)
Margaret Kupferle, Ph.D. P.E. (Committee Member)
E Sahle-Demessie, Ph.D. (Committee Member)
David Wendell, Ph.D. (Committee Member)
191 p.
Environmental Engineering
Biofiltration; Anaerobic degradation; Aerobic degradation; Trihalomethanes; surfactin

Recommended Citations

Citations

  • Mezgebe, B. (2017). Innovative Biological Destruction of Hazardous Chlorinated and Brominated Volatile Disinfection By-products using Bio Trickling Filters [Doctoral dissertation, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1515505465180454

    APA Style (7th edition)

  • Mezgebe, Bineyam. Innovative Biological Destruction of Hazardous Chlorinated and Brominated Volatile Disinfection By-products using Bio Trickling Filters. 2017. University of Cincinnati, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1515505465180454.

    MLA Style (8th edition)

  • Mezgebe, Bineyam. "Innovative Biological Destruction of Hazardous Chlorinated and Brominated Volatile Disinfection By-products using Bio Trickling Filters." Doctoral dissertation, University of Cincinnati, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1515505465180454

    Chicago Manual of Style (17th edition)

ucin1515505465180454
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© 2017, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.