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Response of compost maturity and microbial community composition to pentachlorophenol (PCP)-contaminated soil during composting |
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| Authors: | Zeng Guangming Yu Zhen Chen Yaoning Zhang Jiachao Li Hui Yu Man Zhao Mingjie |
| Institution: | a College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China b Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, PR China c Environmental Resources and Soil Fertilizer Institute, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China |
| Abstract: | Two composting piles were prepared by adding to a mixture of rice straw, vegetables and bran: (i) raw soil free from pentachlorophenol (PCP) contamination (pile A) and (ii) PCP-contaminated soil (pile B). It was shown by the results that compost maturity characterized by water soluble carbon (WSC), TOC/TN ratio, germination index (GI) and dehydrogenase activity (DA) was significantly affected by PCP exposure, which resulted in an inferior degree of maturity for pile B. DGGE analysis revealed an inhibited effect of PCP on compost microbial abundance. The bacteria community shifts were mainly consistent with composting factors such as temperature, pH, moisture content and substrates. By contrast, the fungal communities were more sensitive to PCP contamination due to the significant correlation between fungal community shifts and PCP removal. Therefore, the different microbial community compositions for properly evaluating the degree of maturity and PCP contamination were suggested. |
| Keywords: | Composting Compost maturity Pentachlorophenol DGGE Microbial community composition |
| 本文献已被 ScienceDirect PubMed 等数据库收录！ | |