微塑料增强了多重污染物废水中乳糖酶驱动的双A的去除
Jie Zhang1, Jiongna Liu2, Xinyi Liu2
1College of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067, China; Chongqing Kerui Pharmaceutical (Group) Co.,Ltd., Chongqing, 400060, China; College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China.
Journal of environmental management
|March 29, 2025
概括
微塑料增强了由乳糖驱动的从废水中去除双甲的过程. 这项研究揭示了微塑料加速了BPA由乳糖酶降解,使用超声波和微纳米泡进行了进一步的改进.
科学领域:
- 环境科学 环境科学
- 生物技术是生物技术.
- 化学工程是化学工程的重要组成部分.
背景情况:
- 双A (BPA) 是废水中普遍存在的环境污染物.
- 微塑料 (MP) 在水生环境中越来越多地被检测到,通常与像BPA这样的污染物一起发生.
- 乳糖酶 (Lac) 是一种能够降解BPA的酶,但其在复杂矩阵中的效率需要优化.
研究的目的:
- 调查laccase在从含有微塑料 (MPs) 的废水中去除双A (BPA) 的有效性.
- 阐明MPs增强laccase介导BPA去除的机制.
- 探索先进的氧化过程 (超声波,微纳米气泡) 与乳糖和MP的协同效应,以改善BPA修复.
主要方法:
- 在各种微塑料 (如聚乙烯,PVC) 的存在下,使用乳糖酶对BPA的基于酶的降解.
- 动力分析 (Ki,Ci值) 和热力学研究 (ΔS0) 以了解反应机制.
- 超声波 (UL) 和微纳米气泡 (MNB) 的应用,以增强乳糖和MP联合去除BPA.
- 对MNB-Lac-PVC系统的反应参数 (BPA度,乳酸盐剂量,管道长度) 的优化.
主要成果:
- 在聚乙烯 (PE) MPs 的存在下,乳糖酶驱动的BPA去除显著增加 (96.1 ± 0.3%).
- 微塑料增强了BPA的乳酶吸附能力和降解率,加速了BPA的扩散.
- 超声波和微纳米气泡进一步促进了BPA的去除,分别为20.5 ± 0.8%和46.6 ± 0.7%.
- 一个优化的MNB-Lac-PVC系统在特定条件下实现了91.5±0.8%的BPA去除.
结论:
- 微塑料在提高从废水中去除Bisphenol A的乳酸酶效率方面发挥着至关重要的作用.
- MPs和laccase之间的相互作用改变了反应动力学,并提高了降解速度.
- 像MNB这样的先进技术与酶处理的协同应用为处理现实世界污染水体提供了一个有希望的策略.
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