文献类型：期刊文献

中文题名：壳聚糖对镉铅混合离子吸附作用的研究

英文题名：Adsorption of Mixed Cadmiun and Plumbum Ions by Chitosan

作者：程珊珊[1];杨锡洪[1];章超桦[1];解万翠[1];卢虹玉[1]

机构：[1]水产品深加工广东普通高校重点实验室,广东海洋大学食品科技学院,广东湛江524088

年份：2011

卷号：27

期号：3

起止页码：257

中文期刊名：现代食品科技

外文期刊名：Modern Food Science and Technology

收录：CSTPCD、、Scopus

基金：现代农业产业技术体系建设专项资金资助(nycytx-47)

语种：中文

中文关键词：壳聚糖;吸附;镉;铅

外文关键词：chitosan; adsorption; cadmiun; plumbum

中文摘要：研究了壳聚糖对镉铅混合溶液中镉离子和铅离子的吸附情况,探讨了pH、温度、反应时间、壳聚糖添加量和金属离子初始浓度等因素对其吸附性能的影响。结果表明,壳聚糖对混合溶液中Cd2+和Pb2+离子的吸附取决于溶液的pH、反应时间、壳聚糖添加量和金属离子的初始浓度,而温度对吸附的影响较小。壳聚糖对混液中Cd2+、Pb2+离子的动力学吸附符合Lagergren方程二级吸附模型,对混液中Pb2+离子的热力学吸附符合Langmuir吸附方程。结论:在混合溶液中,壳聚糖对Pb2+离子的选择吸附性高于Cd2+的。

外文摘要：Chitosan was used to investigate the adsorption of Cd2＋ and Pb2＋ ions in a mixed solution.The effects of pH value,temperature,reaction time,adsorbent dose and initial metal ion concentration on the absorption ability were carried out.The results revealed that the Cd2＋ and Pb2＋ ions adsorption process were dependent on pH,reaction time,amount of chitosan and initial metal ion concentration,but the effect of temperature is not significant.The dynamic adsorption of Cd2＋ and Pb2＋ ions in mixed solution by chitosan was according to Lagergren equation adsorption model 2,and thermaldynamic adsorption of Pb2＋ ion was corresponding to Langmuir adsorption equation.The adsorption capacity of chitosan to Pb2＋ ion was higher than Cd2＋ ion in mixed solution.