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用有或没有生物膜的颗粒状活性炭将臭氧转化为基:对微污染物减排的影响

Junho Cho¹, Dongwon Cha¹, Yunho Lee²

¹Department of Chemical and Biological Engineering, Institute of Chemical Process (ICP), Institute of Engineering Research, Seoul National University, Seoul 08826, Republic of Korea.

Journal of hazardous materials

|August 5, 2025

概括

颗粒活性炭 (GAC) 增强了臭氧转化为基的转化,改善了污染物去除. 生物膜覆盖的GAC (BGAC) 阻碍了这一过程,但臭氧化可以恢复BGAC.

科学领域:

环境化学环境化学
水处理技术水处理技术
催化剂是一种催化剂.

背景情况:

臭氧 (O3) 是一种强大的氧化剂,用于水处理.
颗粒活性炭 (GAC) 和生物膜覆盖的颗粒活性炭 (BGAC) 用于增强臭氧化过程.
了解O3转化为基 (•OH) 的过程对于优化污染物降解至关重要.

研究的目的:

评估GAC和BGAC对臭氧转化为基基的影响.
研究这些材料在臭氧化过程中对污染物的降解的影响.
开发氧化剂暴露和污染物去除的预测模型.

主要方法:

在GAC和BGAC的存在下对O3分解和OH生成的实验性评估.
剂量依赖性研究,以评估GAC和BGAC度的影响.
机器学习模型的开发,以预测氧化剂暴露 (∫[O3]dt和 ∫[•OH]dt).
动力建模包括吸附和氧化参数用于污染物消除预测.

主要成果:

GAC和BGAC都加速了O3分解,但具有不同的OH生成效率.
GAC增加了2472%的基暴露,而BGAC减少了1425%.
在BGAC上的生物膜可能会阻碍催化部位,阻碍O3转化为OH.
GAC增强了耐氧污染物的降解,而BGAC抑制了它.
机器学习模型准确地预测了氧化剂暴露 (R2 > 0.99).
扩展臭氧化氧化了GAC,减少了其催化活性,但通过破坏生物膜恢复了BGAC的功能.

结论:

GAC有效地促进从O3中生成OH,增强污染物去除,特别是对于反抗性化合物.
BGAC的生物膜层阻碍OH生成,可能降低某些污染物的处理效率.
臭氧化动态改变了GAC和BGAC的催化特性,有可能再生BGAC的催化功能.
机器学习与动态建模相结合,为预测臭氧化系统中的处理性能提供了一个强大的框架.

关键词:

生物膜是一种生物膜.催化臭氧化催化臭氧化颗粒状活化碳是什么颗粒状活化碳这是一种基基.臭氧臭氧是什么?臭氧臭氧是一种

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