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Water Res

Title:		Degradation of methanethiol in anaerobic sewers and its correlation with methanogenic activities
Author(s):		Sun J; Hu S; Sharma KR; Ni BJ; Yuan Z;
Address:		"Advanced Water Management Centre, The University of Queensland, St. Lucia 4072, Queensland, Australia. Advanced Water Management Centre, The University of Queensland, St. Lucia 4072, Queensland, Australia. Electronic address: zhiguo@awmc.uq.edu.au"
Journal Title:		Water Res
Year:		2015
Volume:		20141118
Issue:
Page Number:		80 - 89
DOI:		10.1016/j.watres.2014.11.004
ISSN/ISBN:		1879-2448 (Electronic) 0043-1354 (Linking)
Abstract:		"Methanethiol (MT) is considered one of the predominant odorants in sewer systems. Therefore, understanding MT transformation in sewers is essential to sewer odor assessment and abatement. In this study, we investigated the degradation of MT in laboratory anaerobic sewers. Experiments were carried out in seven anaerobic sewer reactors with biofilms at different stages of development. MT degradation was found to be strongly dependent on the methanogenic activity of sewer biofilms. The MT degradation rate accelerated with the increase of methanogenic activity of sewer biofilms, resulting in MT accumulation (i.e. net production) in sewer reactors with relatively low methanogenic activities, and MT removal in reactors with higher methanogenic activities. A Monod-type kinetic expression was developed to describe MT degradation kinetics in anaerobic sewers, in which the maximum degradation rate was modeled as a function of the maximum methane production rate through a power function. It was also found that MT concentration had a linear relationship with acetate concentration, which may be used for preliminary assessment of MT presence in anaerobic sewers"
Keywords:		"Anaerobiosis Biodegradation, Environmental Biofilms Bioreactors/microbiology Kinetics Methane/*metabolism Odorants Sewage/*microbiology Sulfhydryl Compounds/*metabolism Anaerobic sewers Methanethiol (MT) Methanogenic activity Odor Volatile organic sulfur;"
Notes:		"MedlineSun, Jing Hu, Shihu Sharma, Keshab Raj Ni, Bing-Jie Yuan, Zhiguo eng Research Support, Non-U.S. Gov't England 2014/12/02 Water Res. 2015 Feb 1; 69:80-89. doi: 10.1016/j.watres.2014.11.004. Epub 2014 Nov 18"