Catalytic hydrodehalogenation of halogenated disinfection byproducts for clean drinking water production: A review
Catalytic hydrodehalogenation of halogenated disinfection byproducts for clean drinking water production: A review
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DOI：
10.1016/j.jwpe.2021.102402
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发表时间：
2021-12
影响因子：
7
通讯作者：
A. Ilunga;B. Mamba;T. Nkambule
中科院分区：
文献类型：
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作者：
A. Ilunga;B. Mamba;T. Nkambule
水处理厂使用了大量的氯来消除微生物，防止未来饮用水中的微生物污染。天然有机物(NOM)与游离氯之间的亲电取代和电子转移活性导致氯化消毒副产物(DBPs)的形成。氯化二氯苯酚的消费和暴露引发了严重的健康风险，容易导致死亡和/或终生疾病。传统的水处理方法，如膜过滤、吸附、沉淀和混凝，非常适合于去除氯化二氯苯酚的前体，其去除百分比估计为70%。传统的水处理方法在氯化二苯并苯并不能去除饮用水中的氯化二苯并苯并不能达到最低浓度。在这篇综述中，我们讨论了催化加氢脱卤化作为一种有效的方法来推进饮用水中氯化DBPs的彻底消除。综述了金属纳米催化剂的贡献，以了解氯化对苯二酚催化加氢脱卤化反应的整个化学途径。钯作为金属纳米催化剂在氯化对苯二酚的催化加氢脱卤化反应中受到了广泛的关注。应加强通过开发新型纳米催化剂进行催化研究，以深入了解氯化二溴联苯并苯二酚的催化加氢脱卤化，并推动其在水处理技术中的应用。
Water treatment plants applied large amount of chlorine to eliminate microorganisms and prevent future microbial contamination of drinking water. Electrophilic substitution and electron transfer activities between natural organic matter (NOM) and free chlorine resulted in the formation of chlorinated disinfection byproducts (DBPs). Chlorinated DBPs' consumption and exposure provoked severe health risks susceptible to cause death and/or lifetime illness. Conventional water treatment approaches such as membrane filtration, adsorption, sedimentation, and coagulation are much appropriated to eliminate chlorinated DBPs' precursors with a percentage removal estimated at 70. At the lowest concentration of chlorinated DBPs, conventional water treatment approaches fail to eliminate chlorinated DBPs in drinking water. In this review, we discussed catalytic hydrodehalogenation as an efficient approach to advance a complete eradication of chlorinated DBPs in drinking water. Metal nanocatalysts contributions were reviewed to understand the chemical pathways throughout the catalytic hydrodehalogenation of chlorinated DBPs. Palladium received much attention as metal nanocatalysts to facilitate the catalytic hydrodehalogenation of chlorinated DBPs. Catalytic investigations through novel nanocatalysts exploration should be intensified to gain insights in catalytic hydrodehalogenation of chlorinated DBPs and advance its possible incorporation in water treatment technology.