Distribution of sulfonamides in liquid and solid anaerobic digestates: effects of hydraulic retention time and swine manure to rice straw ratio
文献类型: 外文期刊
第一作者: Jin, Hongmei
作者: Jin, Hongmei;Xu, Caiyun;Du, Jing;Wu, Huashan;Huang, Hongying;Chang, Zhizhou;Xu, Yueding;Jin, Hongmei;Xu, Caiyun;Du, Jing;Wu, Huashan;Huang, Hongying;Chang, Zhizhou;Xu, Yueding;Jin, Hongmei;Du, Jing;Wu, Huashan;Huang, Hongying;Chang, Zhizhou;Xu, Yueding;Jin, Hongmei;Du, Jing;Wu, Huashan;Huang, Hongying;Chang, Zhizhou;Xu, Yueding;Xu, Caiyun;Zhou, Lixiang
作者机构:
关键词: Sulfonamides;Anaerobic digestion;Removal rate;Distribution characteristics
期刊名称:BIOPROCESS AND BIOSYSTEMS ENGINEERING ( 影响因子:3.21; 五年影响因子:2.97 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The effects of hydraulic retention time (20 and 15 days) and swine manure to rice straw ratios on distribution of sulfonamides (SAs) in liquid and solid anaerobic digestates were studied using bench-scale completely stirred tank reactors at (37 +/- 1) degrees C. Results showed that anaerobic digestion (AD) treatment exhibited a good removal effect on sulfadiazine (SDZ), sulfadimidine (SM2) and sulfachloropyridazine (SCP), especially at HRT = 20 days and co-digestion with swine manure and rice straw. The removal rates of SDZ and SM2 were more than 90%, but only 72.8% for SCP. The residual SAs were mainly remained in solid digestates, with residual rates ranging from 28.8% to 71.3%, 40.6% to 88.0, and 82.7% to 97.0% for SDZ, SM2 and SCP, respectively. Due to lower pKa and higher log K-ow of SCP, its residue in solid digestates was far more than SDZ and SM2. Higher HRT and co-digestion could improve the degradation of SAs, which can also be put down to the occurrence of cometabolism of SAs and COD.
分类号: Q7
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