| 改性膨润土对水中苯甲酸的吸附 |
| |
| 引用本文： | 杨健,辛晓东,魏琴,杜斌.改性膨润土对水中苯甲酸的吸附[J].济南大学学报(自然科学版),2012(3):241-245. |
| |
| 作者姓名： | 杨健 辛晓东 魏琴 杜斌 |
| |
| 作者单位： | 济南大学资源与环境学院;济南市供排水监测中心;济南大学化学化工学院 |
| |
| 基金项目： | 国家自然科学基金(21075052) |
| |
| 摘 要： | 采用氯化钠对膨润土进行钠化，与聚二甲基二烯丙基氯化铵（PDMDAAC）作用制得 PDMDAAC 膨润土。经FTIR分析，研究 PDMDAAC 膨润土对水中苯甲酸的最佳吸附条件、吸附动力学及等温线拟合。结果表明：当选取吸附剂用量为0. 5 g，吸附时间为 1 h，吸附酸度为 pH = 4 时，PDMDAAC 膨润土可吸附 0. 5 mmol / L 的苯甲酸，其最大吸附效率可达86. 57% 。PDMDAAC 膨润土对苯甲酸的吸附符合拟二级动力学方程及 Langmuir 型等温曲线。
|
| 关 键 词： | 聚二甲基二烯丙基氯化铵 膨润土 苯甲酸 吸附 |
Adsorption Behaviour of Benzoic Acid in Water on Modified Bentonite |
| |
| YANG Jian,a,XIN Xiao-dong,WEI Qin,b,DU Bin.Adsorption Behaviour of Benzoic Acid in Water on Modified Bentonite[J].Journal of Jinan University(Science & Technology),2012(3):241-245. |
| |
| Authors: | YANG Jian a XIN Xiao-dong WEI Qin b DU Bin |
| |
| Institution: | 1a(1a.School of Resources and Environment;1b.School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China; 2.Jinan Water and Waste Water Monitoring Center,Jinan 250000,China) |
| |
| Abstract: | Using sodium modified bentonite and polydimethydiallylammonium chloride,we prepared polydimethydiallylammonium chloride-bentonite(PDMDAAC-bentonite) via exchange reaction and analyzed it by FTTR.The adsorption behavior of benzoic acid by PDMDAAC-bentonite was studied,and the best experimental conditions were investigated.Experimental results show that PDMDAAC-bentonite can adsorb 0.5 mmol/L benzoic acid with the maximal removal efficiency of 86.57% under the optimial conditons of 0.5 g sorbent,1 h adsorption time and pH=4.The adsorption kinetic data of benzoic acid by PDMDAAC-bentonite fitts the pseudo-second-order model well,and its adsorption isotherm meets with Langmuir adsorption model. |
| |
| Keywords: | polydimethydiallylammonium chloride bentonite benzoic acid adsorption |
| 本文献已被 CNKI 等数据库收录！ |
