Depletion of hormones and antimicrobials in cattle manure using thermophilic anaerobic digestion

被引:11
作者
Withey, Jonathan M. [1 ]
Mugo, Samuel M. [1 ]
Zhou, Ting [1 ]
Rosser, Patrick M. [1 ]
Gao, Tiejun [2 ]
机构
[1] MacEwan Univ, Dept Phys Sci, 5-132B City Ctr Campus,10700 104 Ave, Edmonton, AB T5J 4S2, Canada
[2] Himark BioGas Inc, Agri Food Discovery Place,F-83 6004 118 St, Edmonton, AB T6G 2E1, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
anaerobic digestion; biogas; degradation; waste treatment and waste minimization; STEROID-HORMONES; BIOGAS PRODUCTION; ANTIBIOTICS; FATE; ENVIRONMENT; WASTE; DEGRADATION; CHLORTETRACYCLINE; OXYTETRACYCLINE; GROUNDWATER;
D O I
10.1002/jctb.4823
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
BACKGROUNDThe fate and effect of hormone and antimicrobial residues in the manure of therapeutically treated cattle is of considerable concern because of the adverse effects of environmental loading of these chemicals. The objective of this study was to determine the depletion of tylosin (TYL), chlortetracycline (CTC), sulfamethazine (SMZ) and megestrol (MEG) using thermophilic anaerobic digestion (TAD). RESULTSQuantitative methods using HPLC-DAD-MS/MS analysis were developed to monitor the hormone and antimicrobials, spiked into manure obtained from unmedicated cattle. These manure samples were incubated for a 28-day period, during which hormone and antimicrobial depletion, and biogas production, was determined. Significant depletion of TYL, CTC, SMZ and MEG was demonstrated using TAD. Both TYL and CTC underwent complete depletion, while SMZ and MEG were each 80% depleted by the 28th day of incubation. The presence of antimicrobials had no negative effects on process stability and caused no significant reduction in total methane production. CONCLUSIONThis process has demonstrated value in reducing the hormone and antimicrobial load to the environment, while not compromising economic value of the biogas production, and allowing use of post-digested biosolids as a regenerated fertilizer. (c) 2015 Society of Chemical Industry
引用
收藏
页码:2404 / 2411
页数:8
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