吸附性碳材料对水中痕量邻苯二甲酸二甲酯的吸附性能及特征研究  

Adsorption capacity and characteristics of carbon-based adsorption materials on DMP at trace level in water

作　　者：杜尔登[1,2] 崔旭峰 宋澄杰[1] 李香青[1] 

机构地区：[1]常州大学环境与安全工程学院,常州213164 [2]同济大学污染控制与资源化研究国家重点实验室,上海200092 [3]上海浦东新区自来水有限公司,上海200092

出　　处：《给水排水》2013年第7期125-130,共6页Water & Wastewater Engineering

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07403-001);国家自然基金(51178321);住房和城乡建设部研究开发项目(2009-K7-4)

摘　　要：针对环境水体中内分泌干扰物的污染问题,选择邻苯二甲酸二甲酯(DMP)作为典型污染物,以颗粒活性炭、酸化活性炭、粉末活性炭和碳纳米管作为吸附剂,考察吸附剂对DMP的吸附性能和吸附特性。研究结果表明:吸附性碳材料对DMP具有良好的吸附性能,四种碳材料的吸附容量大小为:粉状活性炭>颗粒活性炭>酸化活性炭>碳纳米管。粉末活性炭的单层最大吸附容量为678.3 mg/L。Freundlich和Temkin吸附等温线方程能够较好地拟合吸附数据,Langmuir吸附等温线方程对粉末状吸附剂(粉末活性炭、碳纳米管)吸附拟合效果较好。粉末活性炭、颗粒活性炭、酸化活性炭的吸附过程符合一级吸附动力学模型,而碳纳米管吸附过程符合二级吸附动力学模型。To solve the endocrine disruptor in water environment, the existing endocrine disruptor in water environment-dimethyl phthalate （DMP） was selected as typical endocrine disruptor in this study. Four carbon-based materials, including granular activated carbon, acidified activated carbon, powder acti-vated carbon, and carbon nanotubes, were used as adsorbents to remove DMP in water body. The ad-sorption capacity and characteristics of these four adsorbents were investigated. The results showed that these four carbon-based materials＇ performances were satisfying. According to their adsorp-tion capacity, these four material were ranked as： powder activated carbon〉granular activated carbon〉acidified activated carbon〉carbon nanotubes. The powder activated carbon had the biggest monolayer adsorp- tion capacity of 678. 3 mg/L. Freundlich and Temkin adsorption imtherm equation could gratefully fit adsorp tion data. Langrnuir could fit the powder adsorbents （powder activated carbon, carbon nanotubes） well. The adsorption process of powder activated carbon, granular activated carbon, and acidified activated carbon fitted in first-order kinetic model, while the adsorption process of carbon nanotubes fitted in second-order kinetic model.

关 键 词：邻苯二甲酸二甲酯 活性炭碳 纳米管 吸附等温线 吸附动力学 

分 类 号：X832[环境科学与工程—环境工程]