摘要
主要研究了卤灯光照下,Fe(Ⅲ)-酒石酸盐配合物体系对双酚A(BPA)的光化学降解,考查了光源、初始pH值、各反应物初始浓度等因素对双酚A光降解的影响。结果表明:卤灯或太阳光照射下,BPA在Fe(Ⅲ)-酒石酸盐配合物体系中能够有效地实现光降解;光强从8.8×104Lux增加到1.2×105Lux,BPA降解率从68.9%提高到92.8%;BPA的降解率及Fe(Ⅲ)-酒石酸盐配合物光解过程中产生的.OH浓度均随pH增大而减小;Fe(Ⅲ)-酒石酸盐配合物光氧化BPA过程中溶液的pH逐渐升高;过量的酒石酸盐有利于Fe(Ⅲ)/Fe(Ⅱ)的循环进行。
The photochemical degradation of bisphenol-A（BPA） in aqueous solutions containing Fe（Ⅲ）-tartrate complex under the irradiation of a metal halide lamp was preliminarily investigated,and the effects of different factors such as light sources,the initial pH,the initial concentrations of Fe（Ⅲ）,tartrate and BPA were discussed.The results indicated that BPA could be efficiently photo-oxidized by Fe（Ⅲ）-tartrate complex.The efficiency of BPA photooxidation could increase from 68.9% to 92.8% by increasing light intensity from 8.8×10^4 Lux to 1.2×10^5 Lux.BPA degradation efficiency and the concentration of ·OH generated from the process of Fe（Ⅲ）-tartrate complexes photolysis decreased with pH increase.pH value of the solution increased gradually in the process of BPA photooxidation.Excess tartrate was favour of the cycle of Fe（Ⅲ）/Fe（Ⅱ）.
出处
《环境工程学报》
CAS
CSCD
北大核心
2010年第6期1251-1256,共6页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金委中俄国际合作项目(20611120016)
