摘要
在反应温度20℃、紫外光强度700～750μW/cm2、照射时间2h、电磁搅拌时间2h、溶液初始浓度20mg/L的实验条件下,TiO2-膨润土的投加量对光催化降解十二烷基苯磺酸钠(SDBS)的效果有影响:随着TiO2-膨润土投加量由0.01‰增加到0.5‰,SDBS的降解率逐渐提高,当投加量为0.5‰时,光催化降解率最高,达92%,以后随着投加量的增加(从0.5‰到6‰),降解效率反而下降。可见,最佳投加量为0.5‰。在相同实验条件下,投加0.17‰的TiO2(与0.5‰的TiO2-膨润土中含Ti量相同),SDBS的降解率只有40%。可见,相比TiO2,TiO2-膨润土具有投加量小,降解效率高的优点,更实用。
Under the same experiment conditions（the ambient temperature was 20 ℃,the intensity of ultraviolet light was in range of 700—750μW/cm2,electromagnetic stirring speed was constant,reaction under ultraviolet lamp within 2 hours,original concentration of sodium dodecyl benzene sulfonate（SDBS） was 20mg/L）,the dose of TiO2-bentonite affected degradation of SDBS.The more dose of TiO2-bentonite（from 0.01‰ to 0.5‰）,the more SDBS was degraded.The more dose of TiO2-bentonite（from 0.5‰ to 6‰）,the less SDBS was degraded.The optimum dose of TiO2-bentonite was 0.5‰ from that the degradation of SDBS was the most,that was 92%.Under the above experiment conditions,the dose of TiO2 was 0.17,only 40% SDBS was degraded.The content of Ti in 0.17‰TiO2 was equal to that in 0.5‰TiO2-bentonit.The dose of TiO2-bentonite was less than that of TiO2.The degradation of SDBS by TiO2-bentonite was more efficient than that by TiO2.TiO2-bentonite was useful.
出处
《实验技术与管理》
CAS
北大核心
2012年第1期42-44,48,共4页
Experimental Technology and Management
基金
国家基础科学人才培养基金项目(J0630532)
关键词
十二烷基苯磺酸钠
TiO2-膨润土
紫外光
降解
投加量
sodium dodecyl benzene sulfonate（SDBS）
TiO2-bentonite
ultraviolet light
degradation
dose
