Microbiome resistance mediates stimulation of reduced graphene oxide to simultaneous abatement of 2,2′,4,4′,5-pentabromodiphenyl ether and 3,4-dichloroaniline in paddy soils,Journal of Hazardous Materials

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Microbiome resistance mediates stimulation of reduced graphene oxide to simultaneous abatement of 2,2′,4,4′,5-pentabromodiphenyl ether and 3,4-dichloroaniline in paddy soils
Journal of Hazardous Materials ( IF 12.2 ) Pub Date : 2023-11-30 , DOI: 10.1016/j.jhazmat.2023.133121
Yi Sun ₁ , Ying Teng ₁ , Ran Li ₂ , Xia Wang ₁ , Ling Zhao ₁

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Paddy soils near electrical and electronic waste recycling sites generally suffer from co-pollution of polybrominated diphenyl ethers and 3,4-dichloroaniline (3,4-DCA). This study tested the feasibility of reduced graphene oxide (rGO) to stimulate the simultaneous abatement of 2,2′,4,4′,5-pentabromodiphenyl ether (BDE99) and 3,4-DCA in percogenic paddy soil (PPS) and hydromorphic paddy soil (HPS). rGO improved the debromination extent of BDE99 and the transformation rate of 3,4-DCA in PPS, but did not affect their abatement in HPS. The inhibition of specific fermenters, acetogens, and methanogens after rGO addition contributed to BDE99 debromination by obligate organohalide-respiring bacteria (OHRB) in PPS, but relevant soil microbiomes (e.g., fermenters, acetogens, methanogens, and obligate OHRB) responded little to rGO in HPS. For 3,4-DCA, the enhanced activities of nitrogen-metabolic chloroaniline degraders by rGO increased its transformation rate in PPS, but was compensated by the decreased biotransformation from 3,4-DCA to 3,4-dichloroacetanilide after the addition of rGO to HPS. The discrepant stimulation of rGO between PPS and HPS was mediated by soil microbiome resistance. rGO has the application potential to stimulate the simultaneous abatement of polybrominated diphenyl ethers and chloroanilines in paddy soils with relatively low microbiome resistance.

中文翻译：

微生物组抗性介导还原氧化石墨烯的刺激，从而同时减少稻田土壤中的 2,2',4,4',5-五溴二苯醚和 3,4-二氯苯胺

电子电气废物回收场附近的稻田土壤普遍受到多溴二苯醚和3,4-二氯苯胺(3,4-DCA)的共同污染。本研究测试了还原氧化石墨烯 (rGO) 刺激同时消除致渗水稻土 (PPS) 和水化土壤中 2,2',4,4',5-五溴二苯醚 (BDE99) 和 3,4-DCA 的可行性。水稻土（HPS）。 rGO提高了PPS中BDE99的脱溴程度和3,4-DCA的转化率，但不影响HPS中的消除。添加 rGO 后对特定发酵罐、产乙酸菌和产甲烷菌的抑制有助于 PPS 中专性有机卤化物呼吸细菌 (OHRB) 对 BDE99 脱溴，但相关土壤微生物组（例如发酵罐、产乙酸菌、产甲烷菌和专性 OHRB）对 rGO 反应甚微在高压钠灯中。对于 3,4-DCA，rGO 增强了氮代谢氯苯胺降解剂的活性，增加了其在 PPS 中的转化率，但在添加 rGO 后，3,4-DCA 向 3,4-二氯乙酰苯胺的生物转化率降低，从而得到了补偿。高压钠灯。 PPS 和 HPS 对 rGO 的刺激差异是由土壤微生物组抗性介导的。 rGO具有刺激同时消除微生物组抗性相对较低的稻田土壤中多溴二苯醚和氯苯胺的应用潜力。

更新日期：2023-11-30

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