Photocatalytic degradation of phenanthrene in nonionic-anionic surfactant using titania catalysts

Scientific Research and Essays

Yanlin Zhang¹ 

关键词:  ;    Photocatalytic degradation;    nonionic-anionic surfactant;    phenanthrene;    soil remediation.;   

DOI  :  10.5897/SRE11.1694

学科分类：社会科学、人文和艺术（综合）

来源: Academic Journals

【 摘 要 】

Photocatalytic degradation of phenanthrene by titania in nonionic-anionic surfactant micelles was investigated as a promising strategy for soil/sediment/groundwater remediation after using nonionic-anionic surfactant as solubilizing agents for removal of contaminants from soils/sediment/groundwater. All photocatalytic experiments were conducted using a 365 nm mercury monochromatic ultraviolet lamp in a photocatalytic reactor. Addition of1 g/L titania is suitable to this photocatalytic degradation rate and efficiency of phenanthrene atthe ratio of Triton X-100 (TX100) to sodium dodecyl sulfate (SDS) 1 : 2. Both the decrease in thecritical micelle concentration(CMC) of mixed surfactant andthe more negative free energy to easily sorb the contaminant on the surface of titaniawould lead to the gradual increase in the degradation efficiency of phenanthrene. Pseudo-second-order kinetics was observed for the photocatalytic degradation of phenanthrene. Acidic solution environment (pH

【 授权许可】

CC BY