摘要
为了研究控制四溴双酚A(TBBPA)臭氧化过程中溴酸盐生成的影响因素,通过实验对不同的水质参数和臭氧投加量条件下臭氧氧化TBBPA过程中溴离子(Br-)及溴酸根离子(BrO3-)的生成量进行了考察。结果表明,臭氧氧化TBBPA生成BrO3-分为两阶段:第一阶段为臭氧氧化降解TBBPA生成Br-,即Br-累积阶段;第二阶段为臭氧化Br-生成BrO3-,即BrO3-生成阶段。Br-及BrO3-的生成量随着TBBPA初始浓度的增加而增加,生成速率随臭氧投加量增加而提高。25～55℃条件下反应40 min后,BrO3-生成量随温度升高增加了4.5倍。pH值8～11内,pH值降低对Br-及BrO3-生成量有明显的抑制作用。
The generation of bromide（Br-） and bromated（BrO3-） in tetrabromobisphenol A（TBBPA） ozonation process was investigated at different water quality parameters and ozone dose.The purpose of the experiment was to find out the main factors that control the formation of BrO3-during the ozonation of TBBPA.The results showed that there were two stages in the ozonation of TBBPA.In the first stage,the TBBPA was oxidized and Br-was released.The second stage was the ozonation of Brto BrO3-.More Br-and BrO3-were generated at higher initial concentrations of TBBPA.The formation rate was improved with the increasing of ozone dose.The concentration of BrO3-increased 4.5 times with the temperature increased from 25 ℃ to 55 ℃.The levels of Br-and BrO3-decreased as the pH decreased from 11 to 8.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2012年第6期1368-1372,共5页
Chemical Industry and Engineering Progress
基金
中科院百人计划(A1130)
厦门市科技项目(3502Z20101010)
