Enhanced diuron remediation by microorganism-immobilized silkworm excrement composites and their impact on soil microbial communities
| Autor: | Yutai Wang, Liwen Qu, Menrang Yang, Jie Liu, Guohua Zhong |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Catalytic degradation
Environmental Engineering Environmental remediation Health Toxicology and Mutagenesis Microorganism 0211 other engineering and technologies 02 engineering and technology 010501 environmental sciences 01 natural sciences Feces Soil Bioremediation Environmental Chemistry Animals Soil Pollutants Composite material Arthrobacter Waste Management and Disposal Soil Microbiology 0105 earth and related environmental sciences Pollutant 021110 strategic defence & security studies Chemistry Herbicides Microbiota Contamination Bombyx Pollution Saccharum Biodegradation Environmental Microbial population biology Diuron Degradation (geology) |
| Zdroj: | Journal of hazardous materials. 376 |
| ISSN: | 1873-3336 |
| Popis: | In response to the potential threats stemming from the constantly increasing consumption of herbicides, bioremediation offers a beneficial technology for reducing the widespread herbicide contamination. In order to facilitate the in-situ degradation of diuron, Arthrobacter globiformis D47 is captured onto a biocompatible carrier to assemble the microorganism-immobilized silkworm excrement (MSE) composites. By characterization, bacterial cells are intensively entrapped in/onto the carriers, showing high survival and stable catalytic degradation of target pollutants. Meanwhile, MES composites display excellent adaptiveness and feasibility under different conditions, and the average half-life of diuron is shortened to 7.69 d in sugarcane field where diuron is regularly sprayed for weed management. Importantly, we assess that the use of MSE may generally boost the overall xenobiotic-degrading ability, likely due to the slight alternation of the diversity and composition of soil microbial communities. Taking together, the presented MSE provides an attractive in situ approach for the efficient diuron removal as well as for the more feasible utilization of various pollutant-degrading microorganisms. |
| Databáze: | OpenAIRE |
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