Journal
BIORESOURCE TECHNOLOGY
Volume 216, Issue -, Pages 1049-1057Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.06.012
Keywords
ARGs; Copper resistance genes; Swine manure; Red mud; Composting
Funding
- Special Fund for Agro-Scientific Research in the Public Interest [201303091]
- National Major Science & Technology Projects for Water Pollution Control and Management [2015ZX07203-007]
- National Natural Science Foundation of China [21077122]
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Swine manure has been considered as the reservoir of antibiotic resistance genes (ARGs). Composting is one of the most suitable technologies for treating livestock manures, and red mud was proved to have a positive effect on nitrogen conservation during composting. This study investigated the abundance of eight tetracycline and three copper resistance genes, the bacterial community during the full scale swine manure composting with or without addition of red mud. The results showed that ARGs in swine manure could be effectively removed through composting (reduced by 2.4 log copies/g TS), especially during the thermophilic phase (reduced by 1.5 log copies/g TS), which the main contributor might be temperature. Additionally, evolution of bacterial community could also have a great influence on ARGs. Although addition of red mud could enhance nitrogen conservation, it obviously hindered removal of ARGs (reduced by 1.7 log copies/g TS) and affected shaping of bacterial community during composting. (C) 2016 Elsevier Ltd. All rights reserved.
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