caa a22 4500 605503400 CHVBK 20210128100610.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s00253-015-6457-9 doi (NATIONALLICENCE)springer-10.1007/s00253-015-6457-9 Biodegradation of fat, oil and grease (FOG) deposits under various redox conditions relevant to sewer environment [Elektronische Daten] [Xia He, Qian Zhang, Michael Cooney, Tao Yan] Fat, oil and, grease (FOG) deposits are one primary cause of sanitary sewer overflows (SSOs). While numerous studies have examined the formation of FOG deposits in sewer pipes, little is known about their biodegradation under sewer environments. In this study, FOG deposit biodegradation potential was determined by studying the biodegradation of calcium palmitate in laboratory under aerobic, nitrate-reducing, sulfate-reducing, and methanogenic conditions. Over 110days of observation, calcium palmitate was biodegraded to CO2 under aerobic and nitrate-reducing conditions. An approximate 13 times higher CO2 production rate was observed under aerobic condition than under nitrate-reducing condition. Under sulfate-reducing condition, calcium palmitate was recalcitrant to biodegradation as evidenced by small reduction in sulfate. No evidence was found to support calcium palmitate degradation under methanogenic condition in the simulated sewer environment. Dominant microbial populations in the aerobic and nitrate-reducing microcosms were identified by Illumina seqeuncing, which may contain the capability to degrade calcium palmitate under both aerobic and nitrate-reducing conditions. Further study on these populations and their functional genes could shed more light on this microbial process and eventually help develop engineering solutions for SSOs control in the future. Springer-Verlag Berlin Heidelberg, 2015 Fat, oil and grease (FOG) deposits nationallicence Biodegradation nationallicence Redox conditions nationallicence Sewer systems nationallicence He Xia Department of Civil and Environmental Engineering, University of Hawaii at Manoa, 96822, Honolulu, HI, USA aut Zhang Qian Department of Civil and Environmental Engineering, University of Hawaii at Manoa, 96822, Honolulu, HI, USA aut Cooney Michael Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, USA aut Yan Tao Department of Civil and Environmental Engineering, University of Hawaii at Manoa, 96822, Honolulu, HI, USA aut Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/14(2015-07-01), 6059-6068 0175-7598 99:14<6059 2015 99 253 https://doi.org/10.1007/s00253-015-6457-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00253-015-6457-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- He Xia Department of Civil and Environmental Engineering, University of Hawaii at Manoa, 96822, Honolulu, HI, USA aut NATIONALLICENCE 700 1- Zhang Qian Department of Civil and Environmental Engineering, University of Hawaii at Manoa, 96822, Honolulu, HI, USA aut NATIONALLICENCE 700 1- Cooney Michael Hawaii Natural Energy Institute, University of Hawaii at Manoa, Honolulu, USA aut NATIONALLICENCE 700 1- Yan Tao Department of Civil and Environmental Engineering, University of Hawaii at Manoa, 96822, Honolulu, HI, USA aut NATIONALLICENCE 773 0- Applied Microbiology and Biotechnology Springer Berlin Heidelberg 99/14(2015-07-01), 6059-6068 0175-7598 99:14<6059 2015 99 253