title: [Anaerobic digestion of animal manure contaminated by tetracyclines].
abstract: Anaerobic digestion of pig manure spiked with tetracycline (TC) and chlortetracycline (CTC) and the degradation of the two antibiotics during the anaerobic digestion at 35 degrees C were investigated. The results indicate that propionate was the main volatile fatty acid produced during the anaerobic digestion followed by acetate. Compared with the CTC addition, TC + CTC addition showed obvious inhibitory effect on the hydrolysis and acidification of easily digestible organic components of pig manure. The cumulative methane production of TC, CTC, TC + CTC and CK2 during anaerobic digestion was 386.4 mL, 406.0 mL, 412.1 mL and 464.6 mL, respectively. Degradation of TC and CTC followed the first-order kinetic equation. The half-life of TC and CTC was 14-18 days and 10 days, respectively. After the treatment of 45-day anaerobic digestion, the degradation efficiency of TC was 88.6%-91.6% with 97.7%-98.2% of CTC. Therefore, anaerobic digestion shows the benefit on the management of animal manures contaminated by tetracyclines.
authors.affiliation: School of Civil Engineering, Hefei University of Technology, Hefei 230009, China. tongzl1025@126.com
authors.forename: Zi-Lin
authors.initials: ZL
authors.lastname: Tong
authors.forename: Yuan-Lu
authors.initials: YL
authors.lastname: Liu
authors.forename: Zhen-Hu
authors.initials: ZH
authors.lastname: Hu
authors.forename: Shou-Jun
authors.initials: SJ
authors.lastname: Yuan
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D001673:Biodegradation, Environmental; D002645:Chickens; D002751:Chlortetracycline / Q000378:metabolism; D004787:Environmental Pollution / Q000517:prevention & control; D006868:Hydrolysis; D008372:Manure / Q000032:analysis* / Q000382:microbiology; D008697:Methane / Q000032:analysis / Q000378:metabolism; D011422:Propionates / Q000032:analysis; D013552:Swine; D013754:Tetracyclines / Q000378:metabolism*
chemical_list: D008372:Manure; D011422:Propionates; D013754:Tetracyclines; D008697:Methane; D002751:Chlortetracycline