数字农科院2.0

Manure application facilitated electrokinetic remediation of antibiotic-arsenic co-contaminated paddy soil

文献类型： 外文期刊

作者： Yan M.; Zhu C.; Li B.; Su S.; Li H.

作者机构：

关键词： Arsenic; Bacteria; Bacteriology; Contamination; Electric fields; Electrodynamics; Fertilizers; Genes; Health risks; Heavy metals; Mammals; Manures; Soil pollution; Soils; Antibiotic resistance gene; Antibiotic resistance genes; Antibiotics resistance; Arsenic -contaminated paddy soil; Co-existence; Electrokinetic remediation; Manure applications; Membrane transport; Paddy soils; Pig manures; Antibiotics; antibiotic agent; arsenic; RNA 16S; agricultural soil; antibiotic resistance; antibiotics; arsenic; bacterium; electrokinesis; manure; soil pollution; soil remediation; amplicon; animal experiment; antibiotic resistance; Article; Bacillus; Brevundimonas; Clostridium; controlled study; current density; electric field; electric potential; electrokinetic remediation; electron transport; high performance liquid chromatography; hydride generation atomic fluorescence spectrometry; inductively coupled plasma mass spectrometry; inductively coupled plasma optical emission spectrometry; membrane

期刊名称： Journal of Hazardous Materials

ISSN： 0304-3894

年卷期： 2022 年 441 卷

页码：

收录情况： SCIE（2022版） ; EI（2022版）

摘要： The co-existence of antibiotics and heavy metals in soil with manure application poses high risk to both environment and human health, and thus effective remediation methods are in urgent need. This study investigated the synergistic effects of electrokinetic remediation (EKR) on antibiotic resistance and arsenic (As) in co-contaminated paddy soils. EKR treatments in soil amended with pig manure (EKR-PD) showed better remediation efficiency compared with that without pig manure. In detail, the content of available As and the abundance of antibiotic-resistant bacteria (ARB) decreased by 25.2 %−41.4 % and 9.5 %−21.1 % after 7-d remediation, respectively, due to a relatively higher current density for EKR-PD. The role of the electric field contributed to 33.9 % of antibiotic degradation. Antibiotic resistance genes (ARGs) with ribosomal-protection and enzymatic-deactivation types were easier to remove, with the removal ratio of 37.8 %−41.6 % in EKR-PD. Brevundimonas was the most significantly different species during remediation. Bacillus and Clostridium_ sensu_stricto_1 were potential host bacteria of ARGs in the electric field. Membrane transport might be an effective strategy for microorganisms to respond to the stress of both electric field and co-contaminated environments. This study supports the potential role of EKR in the co-contamination of heavy metals and antibiotic resistance under manure application. © 2022 Elsevier B.V.

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