摘要
分别采用悬浮型光催化反应器和悬浮型光催化纳滤膜反应器进行光催化降解H酸溶液试验。结果表明,后者比前者具有更好的光催化处理效果。在污染物初始质量浓度分别为50 mg/L、100 mg/L和150 mg/L、ρ/ρ0≥0.7的反应条件下,悬浮型光催化反应器中污染物光催化降解过程分别遵循L-H一级、一级以及一级与0级耦合的反应动力学。而在悬浮型光催化纳滤膜反应器的耦合工艺中,光催化降解过程分别遵循L-H一级、一级与0级的耦合以及0级反应动力学模型。
Investigations were performed with respect to the photocatalytic degradation and mineralization of H-acid aqueous solution in suspended photocatalytic reactor and suspended photocatalytic nanofiltration membrane reactor respectively. Compared to the traditional suspended photoreactor, the innovative photocatalytic membrane reactor was found to be more photoactive and attractive. Under the conditions of the ratio p/Po （the ratio of instant H-acid concentration to the initial one） larger than 0.7, the initial substrate concentrations of 50, 100 and 150 mg.L^-1 respectively, the photocatalytic degradation reaction processes of H-acid aqueous solution in suspended photocatalytic reactor were observed to follow typical Langmuir-Hinshelhood first-order reaction model, first-order reaction model, and the combination of zero-order and first-order reaction model, as compared with L-H first-order reaction model, the combination of zero-order and first-order reaction model, and L-H zero-order reaction model in the innovative photocatalytic membrane reactor.
出处
《化工进展》
EI
CAS
CSCD
北大核心
2007年第11期1610-1615,共6页
Chemical Industry and Engineering Progress
关键词
光催化氧化
纳滤膜分离
耦合工艺
光催化降解效率
反应动力学
photocatalytic oxidation process
nanofiltration process
coupled technique
photocatalyticdegradation efficiency
reaction kinetics
