Formation mechanism and control strategies of N-nitrosodimethylamine (NDMA) formation during ozonation
Formation mechanism and control strategies of N-nitrosodimethylamine (NDMA) formation during ozonation
复制标题
臭氧氧化过程中N-亚硝基二甲胺(NDMA)的形成机理及控制策略
DOI：
10.1016/j.scitotenv.2022.153679
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发表时间：
2022
影响因子：
9.8
通讯作者：
Jin Jiang
中科院分区：
文献类型：
--
作者：
Yang Song;Sha Feng;Wen Qin;Juan Li;Chaoting Guan;Yang Zhou;Yuan Gao;Zhong Zhang;Jin Jiang
This review summarizes major findings over the last decade related toN-nitrosodimethylamine (NDMA) formed upon ozonation, which was regarded as highly toxic and carcinogenic disinfection by-products. The reaction kinetics, chemical yields and mechanisms were assessed for the ozonation of potential precursors including dimethylamine (DMA),N,N-dimethylsulfamide, hydrazines, N-containing water and wastewater polymers, dyes containing a dimethylamino function, N-functionalized carbon nanotubes, guanidine, and phenylurea. The effects of bromide on the NDMA formation during ozonation of different types of precursors were also discussed. The mechanism for NDMA formation during ozonation of DMA was re-summarized and new perspectives were proposed to assess on this mechanism. Effect of hydroxyl radicals (•OH) on NDMA formation during ozonation was also discussed due to the noticeable oxidation of NDMA by •OH. Surrogate parameters including nitrate formation and UV254after ozonation may be useful parameters to estimate NDMA formation for practical application. The strategies for NDMA formation control were proposed through improving the ozonation process such as ozone/hydrogen peroxide, ozone/peroxymonosulfate and catalytic ozonation process based on membrane pores aeration (MEMBRO3X).
