井冈山大学学报（自然科学版）Issue(3)：22-27,6.DOI:10.3969/j.issn.1674-8085.2013.03.006
榴莲壳吸附水中十六烷基三甲基溴化铵的研究
STUDY ON THE ADSORPTION OF CETYLTRIMETHYLAMMONIUM BROMIDE FROM AQUEOUS SOLUTIONS WITH DURIAN SHELL
摘要
Abstract
The durian shells(DS) were modified as adsorbents by treating with a mixed solution of formaldehyde/sulphuric acid and the adsorption behavior for cetyltrimethyl ammonium bromide (CTAB) was investigated. The affecting factors such as solution pH, adsorbent dosage, initial concentration, adsorption time, concentration and temperature were disscussed. The results showed that the adsorption capacity reached a maximum value at pH 7~11 and removal rate of CTAB would increase with the increasement of adsorbent dosage. When the adsorbent dosage was up to 0.5 g, removal rate would reach 97.5%. The adsorption capacity also increases with the increasement of initial concentration, and adsorption equilibrium was achieved after 120 min. Three kinds of dynamic models were used to simulate adsorption kinetics. The result showed that the adsorption process well followed a pseudo-second order equation. The adsorption isotherm could be described very well by Langmuir model rather than Freundlich or Tempkin models. In thermodynamic studies, the parameters of ΔGo < 0, ΔHo > 0 and ΔSo > 0 indicated that the adsorption process was spontaneous and endothermic with a increase of entropy.关键词
榴莲壳/十六烷基三甲基溴化铵/吸附Key words
durian shell/cetyltrimethyl ammonium bromide/adsorption分类
资源环境引用本文复制引用
黄晓东,娄本勇..榴莲壳吸附水中十六烷基三甲基溴化铵的研究[J].井冈山大学学报（自然科学版）,2013,(3):22-27,6.基金项目
福建省教育厅科技基金项目(2011JB11143）；闽江学院科技启动项目(YKQ1005) （2011JB11143）；闽江学院科技启动项目(YKQ1005）
