title: Effects of anaerobic digestion on chlortetracycline and oxytetracycline degradation efficiency for swine manure.
abstract: Manure containing antibiotics is considered a hazardous substance that poses a serious health risk to the environment and to human health. Anaerobic digestion (AD) could not only treatment animal waste but also generate valuable biogas. However, the interaction between antibiotics in manure and the AD process has not been clearly understood. In this study, experiments on biochemical methane potential (BMP) were conducted to determine the inhibition of the AD process from antibiotics and the threshold of complete antibiotic removal. The thresholds of the complete antibiotic removal were 60 and 40mg/kg·TS for CTC and OTC, respectively. CTC and OTC with concentrations below thresholds could increase the BMP of manure. When the CTC and OTC concentrations exceeded the thresholds, they inhibited manure fermentation, and the CTC removal rate declined exponentially with concentration (60-500mg/kg·TS). The relationship between OTC antibiotic concentration and its removal rate in AD treatment was described with exponential (40-100mg/kg·TS) and linear equations (100-500mg/kg·TS).
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
authors.forename: Fubin
authors.initials: F
authors.lastname: Yin
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China. Electronic address: donghongmin@caas.cn.
authors.forename: Hongmin
authors.initials: H
authors.lastname: Dong
authors.affiliation: Biogas Institute of Ministry of Agriculture, Chengdu 610041, PR China.
authors.forename: Chao
authors.initials: C
authors.lastname: Ji
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
authors.forename: Xiuping
authors.initials: X
authors.lastname: Tao
authors.affiliation: Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, PR China.
authors.forename: Yongxing
authors.initials: Y
authors.lastname: Chen
mesh_terms: D000693:Anaerobiosis; D000818:Animals; D000900:Anti-Bacterial Agents / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002751:Chlortetracycline / Q000378:metabolism*; D008372:Manure / Q000032:analysis*; D010118:Oxytetracycline / Q000378:metabolism*; D034421:Sus scrofa; D018505:Waste Management
chemical_list: D000900:Anti-Bacterial Agents; D008372:Manure; D002751:Chlortetracycline; D010118:Oxytetracycline
keywords: Anaerobic digestion; Chlortetracycline; Degradation; Oxytetracycline; Threshold