羟胺催化臭氧降解邻苯二甲酸甲酯

发布时间：2018-02-26 17:15

  本文关键词： 臭氧 羟胺 邻苯二甲酸二甲酯 羟基自由基 降解　出处：《四川大学学报(工程科学版)》2016年S1期 　论文类型：期刊论文

【摘要】：利用硫酸羟胺(HAS)催化O3降解含有邻苯二甲酸甲酯(DMP)的模拟废水,比较O3/HAS体系和O3体系中DMP的降解情况,研究叔丁醇(TBA)和p H值对O3/HAS体系中O3分解的影响。结果表明:当p H=3.0且HAS初始浓度为20μmol/L时,反应5 min后O3/HAS体系中DMP的降解率比O3体系中提高了82.58%,表明O3/HAS体系降解DMP的效率优于单独O3体系;加入TBA后O3/HAS体系对DMP的降解率显著下降,证明在O3/HAS体系中产生了·OH;在p H值为3.0、7.0和9.2的条件下,O3的降解率均随着HAS浓度的升高而升高,说明HAS促进了O3的分解。此外,选择盐酸羟胺(HAC)、磷酸羟胺(HAP)催化O3降解DMP,将O3/HAS体系、O3/HAC体系、O3/HAP体系中DMP的去除效果进行对比,结果显示3种体系均可促进DMP的降解。
[Abstract]:The degradation of DMP in O _ 3 / has system and O _ 3 / O _ 3 system was compared by using hydroxylamine sulfate (HAS-HAS) to catalyze the degradation of simulated wastewater containing methyl phthalate (DMP). The effects of TBA) and pH on the decomposition of O _ 3 in O _ 3 / has system were studied. The results showed that the initial concentration of HAS was 20 渭 mol/L when pH was 3.0. The degradation rate of DMP in O _ 3 / has system was 82.58% higher than that in O _ 3 system after 5 min reaction, which indicated that the DMP degradation efficiency of O _ 3 / has system was better than that of O _ 3 system, and the degradation rate of DMP in O _ 3 / has system was significantly lower than that in O _ 3 / has system. It was proved that 路OH was produced in the system of O _ 3 / has, and the degradation rate of O _ 3 increased with the increase of HAS concentration under pH values of 3.0 ~ 7.0 and 9.2, which indicated that HAS promoted the decomposition of O _ 3. Hydroxylamine hydrochloride (HAC) and hydroxylamine phosphate (HAP) were used to catalyze the degradation of DMP in O _ 3 / HAC system. The results showed that the three systems could promote the degradation of DMP in the system of O _ 3 / HAC / O _ 3 / HAP.
【作者单位】： 四川大学建筑与环境学院;
【基金】：教育部创新团队资助项目(ITR1027) 四川省环保科技计划资助项目(2013HB08)
【分类号】：X703
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