阴离子和腐殖酸对UV/Fe^(3+)降解CTAB的影响  

Effects of anions and humic acid on the degradation of CTAB by UV/Fe^(3+) process

作　　者：李松涛[1] 尹平河[1] 赵玲[1] 黄焕标[1] 吴兴让[1] 

机构地区：[1]暨南大学生命科学技术学院,广东广州510632

出　　处：《工业水处理》2010年第6期52-54,共3页Industrial Water Treatment

基　　金：国家自然科学基金项目(40673062);广东省自然科学基金重点研究项目(04105835)

摘　　要：研究了UV/Fe3+工艺对十六烷基三甲基溴化铵(CTAB)的去除效果,以及水体中常见的阴离子和腐殖酸对该工艺降解CTAB的影响。结果表明,UV/Fe3+工艺可有效地去除水体中的CTAB,其光降解过程符合一级反应动力学模型。在投加Fe3+质量浓度为5mg/L,125W高压汞灯照射下,CTAB在蒸馏水和自来水中的光降解速率常数分别为0.0525、0.0476min-1;当溶液中Cl-和HCO3-浓度分别为5、10、15mmol/L时,对CTAB光降解均有抑制作用,且随着离子浓度增大,抑制作用增强。腐殖酸在低浓度时,可少许促进光降解反应,高浓度时光降解反应受到抑制。The effects of UV/Fe^3＋ process on the removal capacity of CTAB and the anions and humic acid, which could frequently he found in water body, on the degradation of CTAB in this process have been studied. The results show that UV/Fe^3＋ can remove CTAB from water body and the photo-degradation agrees with the first grade reaction kinetics model. When the dosage of Fe^3＋ is 5 mg/L , under the irradiation of 125 W of high pressure mercury spec trum lamp, the constants of photo-degradation speed rate of CTAB in distilled water and tap water are 0.052 5, 0.047 6 min^-1, respectively. When the concentrations of Cl^- and HCO3^- are 5, 10, 15 mmol/L, respectively, the inhibiting capacity on CTAB photo-degradation goes stronger with the concentration of anions. When the concentration of humic acid is low, the photo-degradation capacity can be enhanced a little bit, but when the concentration is the photo-degradation capacity is inhibited.

关 键 词：腐殖酸 UV/Fe3+工艺 CTAB 光降解 

分 类 号：X703.1[环境科学与工程—环境工程]