Enhanced bioremediation of PAH-contaminated soil by wheat bran and microbial community response |
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| Authors: | Jie Zhang Jing Yuan Qingling Wang Jun Wang Yongming Luo |
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| Affiliation: | 1. Key Laboratory for Important Biological Resources Rrotection and Utilization，College of Life Sciences, Anhui Normal University , Wuhu, China;2. Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences , Nanjing, China;3. Engineering and Research Center of Soil and Groundwater Sustainable Rehabilitation, Chongqing Research Academy of Environmental Sciences , Chongqing, China |
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| Abstract: | ABSTRACT Microcosms were set up containing a PAH polluted soil to investigate biostimulation (addition of wheat bran and fertilizer) and bioaugmentation (inoculation with Pseudomonas sp. SB). After 60 d the fertilizer + wheat bran gave the highest PAH degradation. The degradation rate was 42.2%, significantly higher than the 18.7% in the fertilizer only treatment. Principal coordinate analysis (PCoA) indicates that wheat bran treatment can significantly alter soil bacterial and fungal communities. In addition, wheat bran promoted the enrichment of some soil bacteria such as Bacillaceae, Xanthomonadaceae, Streptomycetaceae, and Chitinophagaceae, and the fungi Talaromyces, Humicola, unclassified_Chaetomiaceae and Mortierella. These results highlight the potential of wheat bran application to reduce the PAHs detected in soil. |
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| Keywords: | Bacterial community biostimulation fungal community PAH degraders wheat bran |
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