摘要
[目的]为了解决环境水体中钛酸酯类物质的污染问题。[方法]选择邻苯二甲酸二甲酯(DMP)作为目标物质,以经HNO_3氧化改性结合金属离子浸渍改性的文冠果种仁壳基活性炭为吸附剂,考察吸附剂对DMP的吸附效果。[结果]经HNO_3氧化改性后再进行金属离子浸渍改性的文冠果种仁壳基活性炭(记为PAC_(N-Mn)^(2+))可较大幅度地提高其对水体中DMP的吸附去除率,且Mn^(2+)浸渍改性效果较好,其DMP去除率可达88.21%。[结论]PAC_(N-Mn)^(2+)对水体中DMP去除率受溶液pH的影响较大,最佳pH范围在3.04~5.75之间。动力学初步研究发现其吸附过程符合二级动力学模型。
[Objective] The research aimed to solve the pollution problem of the phthalate esters in water environment. [Method] Dimethyl pathalate（ DMP） was selected as typical material in this study. Activated carbon based on Xanthoceras sorbifolia buge shell by HNO3 oxidative modification combined with metallic ions modification were used as adsorbents to remove DMP in water body. The adsorption capacity was investigated. [Result]The adsorbent＇s（ denoted as PACN-Mn^2＋） adsorption rate of DMP was improved remarkably by HNO3 oxidative modification combined with metallic ions modification,and Mn^2＋＇s impregnated modification was better. Its adsorption rate of DMP reached 88. 12%.[Conclusion]p H significantly influences the adsorption rate of DMP,and the best p H is in the range from 3. 04 to 5. 75. The adsorption process of DMP is consistent with the secondary dynamic model.
出处
《安徽农业科学》
CAS
2015年第34期1-3,14,共4页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金项目(21066013)
新疆农业大学大学生创新项目(dxscx82015186)
关键词
邻苯二甲酸二甲酯
活性炭
改性
吸附动力学
Dimethyl phthalate（DMP）
Activated carbon
Modification
Adsorption kinetics
