研究论文
李芳柏,古国榜,谷云骊,万洪富,何江华.浅池型太阳能光催化反应动力学研究[J].环境科学学报,2000,20(3):304-307
浅池型太阳能光催化反应动力学研究
- A study on kinetics of shallow pond solar photocatalytic reactor
- 基金项目：
- 作者
- 单位
- 李芳柏
- 1. 广东省生态环境与土壤研究所, 广州 510650; 2. 华南理工大学化工学院, 广州 510642
- 古国榜
- 华南理工大学化工学院, 广州 510642
- 谷云骊
- 华南理工大学化工学院, 广州 510642
- 万洪富
- 广东省生态环境与土壤研究所, 广州 510650
- 何江华
- 广东省生态环境与土壤研究所, 广州 510650
- 摘要：研究了浅池型太阳能反应器中亚甲基蓝一级降解动力学常数与光辐射强度、反应器A/V值的关系.当A/V与光照I均为变量时,提出了一个修正的动力学方程:k=1.627×10-5I0.871(A/V)1.357.同时,还建立了一个新的表观量子产率模型:k=5.23CI0.871(A/V)1.357.计算表观量子产率值为0.17%—0.30%,随着A/V、初始浓度的增大或光强的减小,表观量子产率增大.
- Abstract：The kinetic relationship between the first-order reaction rate constant k of methylene blue decolorization reaction and average radiant intensity I and also the aperture to volume ratio(A/V)in decolorization reaction and average radiant intensity I, and also the apeature to volume ratio (A/V) in the shallow pond solar photo-catalysis reactor was studied.While I and(A/V)are variables, a new kinetics equation is set up and expressed as follows:k =1.6 2 7× 10-5I0.871(A/V)1.3 57.At meantime, another new model is built to calculate apparent quantum yield(ranges from 0.17% to 0.30%), and expressed as follows:k =5.2 3CI0.871(A/V)1.3 57.The apparent quantum yield increases with the increase of (A/V) and initial concentration or the decrease of I.This research will promote the industrialization of shallow pond solar photo-catalysis reactor.
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