摘要
分别以十二烷基苯磺酸钠(SDBS)、聚乙烯醇(PVA)、吐温-80(Tween-80)为代表,考察阴离子型、阳离子型和非离子型3种表面活性剂对二茂铁非均相Fenton体系中亚甲基蓝(MB)的去除率、羟基自由基(·OH)表观生成率的影响及其自身的降解情况.结果表明:反应完成时,无表面活性剂添加的空白组中,MB的剩余率为0.6%,·OH的表观生成率为83.4%.混合体系中的SDBS会降低.OH的表观生成速率且对MB的去除速率有较大的影响;PVA可加速MB的去除,提高.OH的表观生成率;Tween-80会降低·OH的表观生成速率,但反应结束后,混合体系中3种表面活性剂均有残留,不能完全去除.
In this study, SBDS, PVA and Tween-80 were chosen to investigate the effect of surfactants including anionic surfac- tant, cationic surfaetant and nonionic surfactant on the removal of Mehtylene Blue （ MB）, the generation of hydroxyl radicals and the removal of the surfactants themselves. The resuh was that, MB residual in the solution was 0.6% and the generation of hydroxyl radicals was 83.4% at the reaction time of 120 min. All the three surfactants added influenced the heterogeneous Fenton reaction a lot. The SDBS and Tween-80 resistant the ：removal of MB and the generation of hydroxyl radicals,while PVA improved the removal of MB and the generation of hydroxyl radicals. But any kind of surfactant in solution can not be completly removed.
出处
《上海师范大学学报（自然科学版）》
2011年第6期580-585,共6页
Journal of Shanghai Normal University(Natural Sciences)
基金
国家自然科学基金(20607008
21077048)
浙江省有机污染过程与控制重点实验室开放基金项目
昆明理工大学分析测试基金(2010150)
