Abstract
Dichloromethane (CH2Cl2) is one of main components of odorous gases from pharmaceutical sewage treatment plants. In this work, firstly the CdS/TiO2 loaded on ACFs composite photocatalysts was prepared. Gaseous CH2Cl2 was selected as the model reactant, the photocatalytic activities of CdS/TiO2/ACFs composites had been investigated. The results showed that the degradation rate of CH2Cl2, when the light was turned on after the CdS/TiO2/ACFs composites were saturated, was significantly higher and could maintain a longer time than that one of direct light. At initial stage, the degradation rate of CH2Cl2 could reach to 94%, while it decreased with the increase of the irradiation distance. It increased with the amount of composites before illumination 70 min; however it becomes reverse after 70 min. The degradation rate of CH2Cl2 decreases with the inlet concentration, when the inlet concentration was 26.5 mg m-3, the photodegradation rate declined about 70 % than that one of 8.5 mg m-3 when light 30 min.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
