摘要:本次研究以典型的个人护理用品三氯卡班为目标污染物,探究其氯化反应过程。结果发现,TCC氯化反应遵循二级反应动力学规律,其表观反应速率常数kapp随着加氯量的增加而增大;酸性(pH=4.2)条件下,TCC降解受到抑制,而碱性条件更有利于TCC的降解;同时,会生成了一些具有“三致”效应的消毒副产物(DBPs),且DBPs的生成量随加氯量增加而增加。这项研究对于初步了解三氯卡班氯化反应规律和评价饮用水消毒过程中TCC对人体健康产生的潜在安全风险具有一定的参考意义,为今后探明氯化机理奠定基础。26641 毕业论文关键词:三氯卡班;氯化;动力学;消毒副产物
Chlorination of triclocarban: a kinetic and disinfection by-products study
Abstract: In this study, TCC as target pollutant, explore the reactions between chlorine and triclocarban. The results showed that the TCC chlorination reaction followed the second-order reaction kinetics, the apparent reaction rate constant (kapp) increased with the increase of chlorine dosage. Under acidic conditions, TCC degradation was inhibited, while the alkaline condition was more beneficial to the degradation of TCC. At the same time, disinfection by-products (DBPs), which have carcinogenic, teratogenic and mutagenic effects, are produced in chlorination process. When the chlorine dosage increased, the production of DBPs was also increased. This study has a certain reference value for the preliminary understanding of triclocarban chlorination reaction rules and evaluation in the potential safety risks of TCC for human health during drinking water disinfection, and lay the foundation for future study of chloride mechanism.
Key words: TCC; chlorination; kinetics; disinfection by-products
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