期刊
BIORESOURCE TECHNOLOGY
卷 250, 期 -, 页码 625-634出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.11.069
关键词
Composting; 4-Nonylphenol; Cadmium; Bacteria diversity; Detoxification
资金
- Program for the National Natural Science Foundation of China [51709101, 51579098, 51779090, 51608194, 51408206, 51521006]
- China Postdoctoral Science Foundation [2017M610498]
- National Program for Support of Top-Notch Young Professionals of China
- Hunan Provincial Science and Technology Plan Project [2016RS3026]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT13R17]
Composting is identified as an effective approach for solid waste disposal. The bioremediation of 4-nonylphenol (4NP) and cadmium (Cd) co-contaminated sediment was investigated by composting with Phanerochaete chrysosporium (P. chrysosporium) inocula. P. chrysosporium inocula and proper C/N ratios (25.51) accelerated the composting process accompanied with faster total organic carbon loss, 4NP degradation and Cd passivation. Microbiological analysis demonstrated that elevated activities of lignocellulolytic enzymes and sediment enzymes was conducive to organic chemical transformation. Bacterial community diversity results illustrated that Firmicutes and Proteobacteria were predominant species during the whole composting process. Aerobic cellulolytic bacteria and organic degrading species played significant roles. Toxicity characteristic leaching procedure (TCLP) extraction and germination indices results indicated the efficient detoxification of 4NP and Cd co-contaminated sediment after 120 days of composting. Overall, results demonstrated that P. chrysosporium enhanced composting was available for the bioremediation of 4NP and Cd co-contaminated sediment.
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