太阳光光催化降解弱酸性大红的动力学研究  

STUDY ON KINETICS OF SOLAR PHOTOCATALYTIC DEGRADATION OF ACID RED

作　　者：暴勇超[1] 刘娟[1] 

机构地区：[1]青岛科技大学环境与安全工程学院,青岛266042

出　　处：《太阳能学报》2009年第9期1219-1223,共5页Acta Energiae Solaris Sinica

摘　　要：采用自制的反应装置,研究了负载型TiO_2膜太阳光光催化降解弱酸性大红的动力学。结果表明:在所研究的范围内,太阳光光催化降解弱酸性大红符合一级动力学反应,可用L-H动力学方程描述,且反应速率常数(K)与C_0^(1.50)、pH^(1.17)和V^(0.36)成正比;太阳光光催化对染料的降解无选择性且弱酸性大红染料能够被完全矿化为CO_2和H_2O;一年四季降解实验中,由于冬季太阳光光强太弱,应考虑人工光源作为补偿。Kinetics of solar photocatalytic degradation on acid red was studied by using self-designed reactor. TiO2 was used as photocatalyst, immobilized on glass spring. The results showed that the kinetics of solar photocatalytic reaction of acid red can be described by Langmuir-Hinshelwood model, that is, the degradation of acid red can be expressed by firstorder kinetics model. The rate constant is in direct proportion to Co^-1.50 ,pH^-1.17 and V^0.36. There is no selectivity of solar photocatalytic degradation on dyes. Acid red can be completely mineralized to CO2 and H2O. The experimental results in different seasons indicated, for weaker solar light intensity in winter, other assistant lamp-house must be prepared as an alternative equipment.

关 键 词：太阳光光催化氧化 TIO2膜 玻璃弹簧 动力学 

分 类 号：X703.1[环境科学与工程—环境工程]