K_2FeO_4去除水体中的邻仲丁基4,6-二硝基苯酚  

Removal of 2-sec-butyl-4,6-dinitrophenol in water by potassium ferrate

作　　者：曹刚[1,2] 罗恺[1] 邵基伦 李紫惠 李明玉[1,2] 任刚[1,2] 

机构地区：[1]暨南大学环境学院,广州510632 [2]广东省高校水土环境毒害性污染防治与生物修复重点实验室,广州510632

出　　处：《环境工程学报》2015年第11期5403-5407,共5页Chinese Journal of Environmental Engineering

基　　金：广东省科技计划项目(2011B030800009)

摘　　要：以水体中的邻仲丁基4,6-二硝基苯酚（DNBP）为研究对象,考察了K2Fe O4在不同温度、p H和共存成分等条件下对其去除效果。结果表明,K2Fe O4去除水体中DNBP所需的适宜p H为6.0～7.0,适宜温度在25～35℃,且K2Fe O4与DNBP摩尔比大于20∶1时,DNBP降解率大于90.0%。水体p H接近中性时,共存成分NH4Cl、Na Cl、Na NO3和Mn Cl2对K2Fe O4去除DNBP的影响很小。此外,K2Fe O4与DNBP摩尔比较大时,DNBP的准一级动力学降解速率常数k与p H的关系符合Gauss模型。Experiment for oxidative degradation of 2-sec-butyl-4,6-dinitrophenol（ DNBP） using K2 Fe O4was carried out in aqueous solution. The effects of reaction parameters on DNBP degradation were investigated by examining temperature,p H and coexisting constituents. The optimal conditions were an initial DNBP concentration of 0. 1 mmol / L at p H of 6. 0—7. 0,temperature of 25—35℃ and molar ratio of 20∶ 1 of K2 Fe O4： DNBP for2 h. The DNBP removal was above 90. 0% under the optimal conditions. The addition of NH4 Cl,Na Cl,Na NO3 and Mn Cl2 had no significant influence on DNBP removal at p H 7. 0. In addition,the kinetic studies revealed that the relation between pseudo-first-order kinetic rate constant and p H could be briefly described by the Gauss model. These results contribute to DNBP removal in the water.

关 键 词：高铁酸钾 环境激素 DNBP 速率常数 

分 类 号：X703[环境科学与工程—环境工程]