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题名: Distribution of antibiotic resistance genes (ARGs) in anaerobic digestion and land application of swine wastewater
作者: Sui, Qianwen; Zhang JunYa(张俊亚); Chen, Meixue; Tong, Juan; Wang, Rui; Wei, Yuansong
刊名: ENVIRONMENTAL POLLUTION
出版日期: 2016-06
卷号: 213, 期号:0, 页码:751-759
关键词: Antibiotic resistance gene ; Swine wastewater ; Anaerobic digestion ; Land application ; Real-time polymerase chain reaction
DOI: 10.1016/j.envpol.2016.03.038
部门归属: 大气污染控制中心
英文摘要: Swine farm and the adjacent farmland are hot spots of ARGs. However, few studies have investigated the on-site occurrence of ARGs distributed in the process of anaerobic digestion (AD) followed by land application of swine wastewater. Two typical swine farms, in southern and northern China respectively, with AD along with land application were explored on ARG distributions. ARGs were highly abundant in raw swine wastewater, AD effectively reduced the copy number of all detected ARGs (0.21-1.34 logs removal), but the relative abundance with different resistance mechanisms showed distinctive variation trends. The reduction efficiency of ARGs was improved by stable operational temperature and longer solid retention time (SRT) of AD. ARGs in soil characterized the contamination from the irrigation of the digested liquor. The total ARGs quantity in soil fell down by 1.66 logs in idle period of winter compared to application period of summer in the northern region, whereas the total amount was steady with whole year application in south. Some persistent (sul1 and sul2) and elevated ARGs (tetG and ereA) in AD and land application need more attention. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/35742
Appears in Collections:大气污染控制中心_期刊论文

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