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J Hazard Mater ; 376: 29-36, 2019 08 15.
Artigo em Inglês | MEDLINE | ID: mdl-31103596

RESUMO

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.


Assuntos
Arthrobacter/metabolismo , Bombyx , Diurona/metabolismo , Fezes/microbiologia , Herbicidas/metabolismo , Microbiota , Poluentes do Solo/metabolismo , Animais , Biodegradação Ambiental , Fezes/química , Saccharum/crescimento & desenvolvimento , Solo/química , Microbiologia do Solo/normas
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