Abstract:A simple inactivation method of viruses in water was presented in this study by using bacteriophage MS2 as the model virus. Effects of irradiation time, concentration of TiO2 and light intensity of ultraviolet on removal efficiency of MS2 were discussed, and the feasibility of sunlight instead of ultravioletapplied to inactivate virus was evaluated. The results showed that higher transmittance of ultravioletwas obtained for the polyethylene (PE) sample bag; 7.95 Log of MS2 in tapwater was inactivated after 6hour’s irradiation of ultraviolet at the concentration of 50mg/L of TiO2; inactivation rate increased with the increasing light intensity below 45μW/m2. By comparison, 4.87 Log of MS2 in creek water was inactivatedat the concentration of 50mg/L of TiO2 under ultraviolet. However, 6.1 Log removal efficiency of MS2 in either tapwater or creek water was achieved under sunlight at the same concentration of TiO2, indicating that TiO2 coupled with sunlight is a sound method to inactivate the virus in water.
吕文洲, 乔宇祥, 刘英. 纳米TiO2-光催化灭活水中噬菌体MS2[J]. 中国环境科学, 2015, 35(8): 2532-2538.
吕Wen-Zhou , QIAO Yu-Xiang, LIU Ying. Inactivation of bacteriophage MS2 in water by TiO2 nanoparticles coupled with light. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(8): 2532-2538.