Division of Biotechnology, Advanced Institute of Environment and Bioscience, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, Jeonbuk, 54596, South Korea.
Department of Ecology Landscape Architecture-Design, College of Environmental and Bioresource Sciences, Jeonbuk National University, Iksan, Jeonbuk, 54596, South Korea.
Chemosphere. 2020 Jun;249:126083. doi: 10.1016/j.chemosphere.2020.126083. Epub 2020 Feb 1.
Exposure to endocrine disruptors interferes with the synthesis, release, transport and metabolic activities of hormones, thus impairing human health significantly. Bisphenol A (BpA), an endocrine disruptor, commonly released into the environment by industrial activities and needs immediate attention. This study aims at investigating the process and prospects of deploying bio-electrochemical systems (BES) for the removal of BpA from artificially contaminated soil using Bacillus subtilis HV-3. The BES was setup with desired operating conditions: initial concentration of BpA (80-150 mg/L), pH (3-11) and applied potential voltage (0.6-1.4 V). Under optimized conditions (initial BpA concentration, 100 mg/L; pH 7; and applied voltage 1.0 V), close to 98% degradation of BpA was achieved. The intermediates produced during degradation were analysed using High performance liquid chromatography-Mass spectrometry and the possible degradation pathway was elucidated. Phytotoxicity studies in the remediated soil with Phaseolus mungo confirmed the environmental applicability of the BES system.
暴露于内分泌干扰物会干扰激素的合成、释放、运输和代谢活动，从而对人类健康造成重大影响。双酚 A（BpA）是一种内分泌干扰物，通常由工业活动释放到环境中，需要立即引起关注。本研究旨在探讨利用枯草芽孢杆菌 HV-3 利用生物电化学系统（BES）从人工污染土壤中去除 BpA 的过程和前景。BES 的设定采用了所需的操作条件：BpA 的初始浓度（80-150mg/L）、pH 值（3-11）和施加的电压（0.6-1.4V）。在优化条件下（初始 BpA 浓度为 100mg/L、pH 值为 7 和施加电压为 1.0V），BpA 的降解接近 98%。使用高效液相色谱-质谱分析降解过程中产生的中间产物，并阐明可能的降解途径。在修复土壤中用绿豆进行的植物毒性研究证实了 BES 系统的环境适用性。
