Cui Erping, Wu Ying, Jiao Yanan, Zuo Yiru, Rensing Christopher, Chen Hong
Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, People's Republic of China.
Department of Agricultural Resources and the Environment, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China.
Environ Sci Pollut Res Int. 2017 Jun;24(16):14484-14490. doi: 10.1007/s11356-017-9028-z. Epub 2017 Apr 25.
The effect of two different biochar types, rice straw biochar (RSB) and mushroom biochar (MB), on chicken manure composting was previously examined by monitoring the fate of antibiotic resistance genes (ARGs) and arsenic. The behavior of ARGs and arsenic in other kinds of manure composting with the same biochar types had not been examined. In this study, we added either RSB or MB to pig and duck manure composts to study the behavior of ARGs (tet genes, sul genes, and chloramphenicol resistance genes) and arsenic under the same experimental condition. The results showed that the average removal values of selected ARGs were respectively 2.56 and 2.09 log units in duck and pig manure compost without the addition of biochar. The effect of biochar addition on the average removal value of ARGs depended on the type of biochar and manure. For instance, in pig manure compost, MB addition increased the average removal value of ARGs, while RSB addition decreased. And both biochar additions had a negative influence on the average removal value of ARGs in duck manure compost. Analytical results also demonstrated that MB addition reduced total arsenic and the percentage of bioavailable arsenic more than RSB.
先前通过监测抗生素抗性基因（ARGs）和砷的去向，研究了两种不同类型的生物炭，即稻草生物炭（RSB）和蘑菇生物炭（MB）对鸡粪堆肥的影响。尚未研究相同类型生物炭在其他种类粪便堆肥中ARGs和砷的行为。在本研究中，我们将RSB或MB添加到猪粪和鸭粪堆肥中，以研究相同实验条件下ARGs（四环素基因、磺胺基因和氯霉素抗性基因）和砷的行为。结果表明，在不添加生物炭的情况下，鸭粪和猪粪堆肥中选定ARGs的平均去除值分别为2.56和2.09个对数单位。添加生物炭对ARGs平均去除值的影响取决于生物炭和粪便的类型。例如，在猪粪堆肥中，添加MB增加了ARGs的平均去除值，而添加RSB则降低了该值。两种生物炭的添加对鸭粪堆肥中ARGs的平均去除值均有负面影响。分析结果还表明，添加MB比添加RSB更能降低总砷含量和生物可利用砷的百分比。
