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| Removal of three kinds of tetracycline antibiotics and three kinds of sulfa antibiotics in biogas slurry by Fenton oxidation |
| Received:July 13, 2018 Revised:September 07, 2018 |
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| KeyWord:Fenton reagent;antibiotics;removal rate;biogas slurry;nutrient retention rate |
| Author Name | Affiliation | E-mail | | CHI Xiang | Lab of Eco-Environmental Engineering Research, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
The Cooperative Innovation Center for Sustainable Pig Production(Hubei Province), Wuhan 430070, China | | | ZHOU Wen-bing | Lab of Eco-Environmental Engineering Research, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
The Cooperative Innovation Center for Sustainable Pig Production(Hubei Province), Wuhan 430070, China | zhouwb@mail.hzau.edu.cn | | WU Lin | Lab of Eco-Environmental Engineering Research, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
The Cooperative Innovation Center for Sustainable Pig Production(Hubei Province), Wuhan 430070, China | | | WU Fei | Lab of Eco-Environmental Engineering Research, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China | | | XIAO Nai-dong | Lab of Eco-Environmental Engineering Research, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
The Cooperative Innovation Center for Sustainable Pig Production(Hubei Province), Wuhan 430070, China | | | ZHU Duan-wei | Lab of Eco-Environmental Engineering Research, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China
The Cooperative Innovation Center for Sustainable Pig Production(Hubei Province), Wuhan 430070, China | |
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| Abstract: |
| In China, different kinds of antibiotics have been widely used in poultry production. In most cases, animal wastes are treated using biogas plants, and then the biogas slurry is used for irrigation. Consequently, antibiotics may be discharged into the environment and be absorbed by crops, which is dangerous to organisms and human beings through food chain transmission. Therefore, antibiotics should be removed to ensure the safe use of biogas slurry. In this study, fenton oxidation was employed to remove three kinds of tetracycline antibiotics and three kinds of sulfa antibiotics in biogas slurry, in which the effects of pH, H2O2 dosage, and mole ratio of n (H2O2)/n (Fe2+)on the removal rates were investigated. The results showed that the optimal reaction condition was pH 4.0, 0.4 mol·L-1 H2O2, and 10:1 of n (H2O2)/n (Fe2+). Under this condition, the removal rate of tetracycline, oxytetracycline, chlorotetracycline, sulfamethoxazole, sulfamerazine, and sulfadiazine was 91.83%, 92.38%, 80.52%, 93.60%, 91.97%, and 91.60%; The retention rate of nutrients TN, TP, and TK was 96.0%, 97.7%, and 97.2%, respectively. In summary, Fenton oxidation offers an effective way to remove antibiotics in biogas slurry. |
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