Effects of conditioners on sulfonamides degradation during the aerobic composting of animal manures
Sulfonamides (SAs) is one kind of the most important pharmaceuticals occurring in the environment.As the food additive,an increase application of SAs in the production of livestock and poultry leads to amounts of SAs excreted in manure,resulting in persistent environment pollution.Our research aimed to study the effects of some conditioners(sawdust,rice straw) on SAs degradation during the aerobic composting of animal manure.The experiments were conducted for 10 manure composting treatments as follow:hog manure,10 mg·kg-1 SAs; hog manure+sawdust,10 mg·kg-1 SAs; hog manure+rice straw,10 mg·kg-1 SAs; hog manure,20 mg·kg-1SAs; hog manure+sawdust,20 mg·kg-1 SAs; hog manure+rice straw,20mg/kg SAs; Chicken menure,10 mg·kg-1 SAs; Chicken manure+sawdust,10mg·kg-1SAs; Chicken manure,20mg·kg-1SAs; Chicken manure+sawdust,20 mg·kg-1SAs.The degradation of four SAs,sulfamerazine(SM1),sulfachlorpyridazine(SCP),sulfadimoxine(SDM),Sulfaquinoxaline(SQ)were evaluated.The results showed that over 60% of 4 kinds of SAs were degraded in 35d of aerobic composting.Significant degradation of SM1,SCP,SDM,SQ were showed in treatments using conditioners than using manure alone.The reduction of 4 kinds of SAs ranged from 62.30 to 100% in all six treatments in aerobic composting,and the highest degraded rates were observed in six hog manure treatments with adding rice straws.It concluded that adding conditioners improved the degradation rate of 4 kinds of SAs during composting,which was considered as a practical and economical option for reducing antibiotic levels in animal manure before field use.
Animal manures Sulfonamides Composting Conditioners Degradation
Jinrong Qiu Jinhua He Qingyun Liu b Zhengvuan Guo Dechun He Genyi Wu Zhencheng Xu
South China Institute Of Environmental Sciences.MEP, Guangzhou 510655, China South China Institute Of Environmental Sciences.MEP, Guangzhou 510655, China; College of Resource an College of Resource and Environment, Hunan Agriculture University, Changsha 410128, China
国际会议
The Seventh International Conference on Waste Management and Technology(第七届固体废物管理与技术国际会议(ICWMT7))
北京
英文
17-24
2012-09-05（万方平台首次上网日期，不代表论文的发表时间）