羧甲基马铃薯渣对水溶液中铅离子吸附性能的优化

周 睿;曹龙奎;鹿保鑫

doi:10.3981/j.issn.1000-7857.2011.05.007

科技导报 >

2011 , Vol. 29 >Issue 11-05: 46 - 50

DOI: https://doi.org/10.3981/j.issn.1000-7857.2011.05.007

研究论文

羧甲基马铃薯渣对水溶液中铅离子吸附性能的优化

周睿;曹龙奎;鹿保鑫

展开

1. 黑龙江八一农垦大学食品学院，黑龙江大庆 1633192. 黑龙江省农产品加工工程技术研究中心，黑龙江大庆 163319

收稿日期: 2010-11-08

修回日期: 2010-12-13

网络出版日期: 2011-02-18

收起

Adsorption Performance of Optimization Carboxymethyl Potato Pulp for Pb2+ from Aqueous Solution

Expand

Received date: 2010-11-08

Revised date: 2010-12-13

Online published: 2011-02-18

Fold

摘要

为了更有效解决重金属铅离子对水资源污染的严重问题，对羧甲基马铃薯淀粉渣吸附铅离子的性能进行优化研究。以马铃薯淀粉渣为原料，通过醚化改性工艺，制备了羧甲基化马铃薯淀粉渣吸附剂。在单因素试验的基础上，采用Box-Benhnken的中心组合试验设计及响应面分析法，研究了吸附剂用量、吸附时间和pH值三因素对水溶液中铅离子吸附效果的影响，得出吸附剂对铅离子吸附效果的回归模型。结果表明，最佳吸附工艺参数为吸附剂用量0.219g，pH值为6.6，吸附时间42.9min，羧甲基马铃薯淀粉渣对铅离子吸附容量可达41.28mg/g，铅离子去除率达90.4%。常温下吸附动力学模型符合Freundlich等温方程式Q=2.5262C0.9085；采用1mol/L盐酸溶液作为解析液，铅离子回收率可达90.97%。羧甲基化马铃薯淀粉渣可有效满足工业化污水铅离子处理的要求。

关键词： 羧甲基马铃薯渣; 吸附; 解析; 响应面分析

本文引用格式

周睿;曹龙奎;鹿保鑫 . 羧甲基马铃薯渣对水溶液中铅离子吸附性能的优化[J]. 科技导报, 2011 , 29(11-05) : 46 -50 . DOI: 10.3981/j.issn.1000-7857.2011.05.007

Abstract

Waste water contaminated from heavy metals is very harmful to the health of human beings. In order to effectively solve the serious problem that lead ions pollute water resources, the carboxymethyl potato pulp synthesis and its adsorption property of lead ions were studied. The effects of reaction time, carboxymethyl potato pulp dose, and pH on the adsorption performance to lead ions in the aqueous solution were studied on the basis of the results of single factor tests, according to Box-Benhnken's factorial design principle and response surface methodology analysis, a regression equation of the modification parameters was established. The optimum technology conditions are confirmed as follows: the adsorbent dose is 0.219g, pH value is 6.6, adsorption time is 42.9min, the maximum value of loading capacity is up to 41.28mg/g and the maximum removal rate of Pb2+ could reach 90.4%. The adsorption ability of CCMS adsorbent is conformed to Freundlich's isotherm adsorption equation Q=2.5262C0.9085. The maximum recovery ratio of Pb2+ is up to 90.97% when 1mol/L HCl aqueous solution is used in the desorption process. The carboxymethyl potato pulp can effectively meet the industrialized demand on removal of Pb2+ form the waste water.

Key words： carboxymethyl potato pulp; adsorption; desorption; response surface methodology

Options

文章导航

摘要

本文引用格式

Abstract

联系我们

访问统计

模态框（Modal）标题

摘要

本文引用格式

Abstract

联系我们

访问统计