|本期目录/Table of Contents|

[1]池汝安,王丽艳,余军霞,等.改性甘蔗渣对镉离子的吸附[J].武汉工程大学学报,2013,(12):12-16.[doi:103969/jissn16742869201312003]
　CHI Ru\|an,WANG Li\|yan,YU Jun\|xia,et al.Dynamic adsorption of cadmium ions on modified bagasse fixed bed[J].Journal of Wuhan Institute of Technology,2013,(12):12-16.[doi:103969/jissn16742869201312003]
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改性甘蔗渣对镉离子的吸附(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2013年12期
页码:
12-16
栏目:
化学与化学工程
出版日期:
2013-12-31

文章信息/Info

Title:
Dynamic adsorption of cadmium ions on modified bagasse fixed bed
文章编号:
16742869(2013)12001205
作者:
池汝安; 王丽艳; 余军霞; 何正艳; 徐志高; 张越非
武汉工程大学化工与制药学院，绿色化工过程教育部重点实验室，湖北 武汉 430074
Author(s):
CHI Ru\|an;  WANG Li\|yan;  YU Jun\|xia;  HE Zheng\|yan;  XU Zhi\|gao;  ZHANG Yue\|fei
Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430074, China
关键词:
固定床; 吸附; 甘蔗渣; 镉离子; 竞争吸附
Keywords:
fixed bed;  adsorption;  bagasse;  cadmium ion;  competitive adsorption
分类号:
X71
DOI:
103969/jissn16742869201312003
文献标志码:
A
摘要:
用均苯四甲酸二酐对甘蔗渣进行改性，并制成吸附固定床，探讨其对镉离子的动态吸附行为.采用蠕动泵逆流吸附的方式，首先对改性前后吸附效果进行考察.然后研究溶液初始浓度、填充粒径、流速、铜离子等对改性甘蔗渣吸附镉离子的影响及固定床的重复使用情况.结果表明在流速为6.25 mL/min、质量浓度为100 mg/L的条件下，0.075~0.15 mm的甘蔗渣对镉离子的饱和吸附容量为53.2 mg/g，改性甘蔗渣饱和吸附容量为121 mg/g，改性甘蔗渣对镉离子的吸附效果明显增强.吸附剂粒径、溶液初始浓度、流速等对吸附影响较小（饱和吸附容量为103.2~124 mg/g），固定床可在较宽的实验条件下重复利用.改性甘蔗渣对铜离子的吸附亲和力显著高于镉离子，控制操作时间可实现镉离子、铜离子的选择性分离.
Abstract:
The pyromellitic dianhydride modified bagasse were successfully used as adsorbents for cadmium ions removal in a fixed bed to investigate the dynamic adsorption behavior . The adsorption capacity of unmodified and modified bagasse was investigated via the peristaltic pump reflux adsorption method. The effect of the initial concentration, filler particle size, flow rate and copper ions on the adsorption of cadmium ions was also investigated. Furthermore, the reuse ability of the fixed bed was studied. Results show that the adsorption capacity of cadmium ions on unmodified bagasse is 53.2 mg/g at the flow rate of 6.25 mL/min and the concentration of 100 mg/L，while that is 121 mg/g on modified bagasse, which demonstrates the preferable cadmium ions removal ability of unmodified bagasse . Particle size, initial mental concentration and flow rates have little effects on the adsorption of cadmium ions, and the fixed bed can be used repeatedly under wide experimental conditions. The modified bagasse has higher affinity toward copper ions than cadmium ions, which can realize selectively separation of the cadmium/copper ions binary system by controlling the operation time.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：20131127基金项目：资源多样性与生态环境安全重大问题（973前期研究专项）（2011CB411901）；矿物处理过程强化（长江学者和创新团队发展计划）（IRT0974）；教育部新世纪优秀人才(项目NCET\|11\|0966)；湖北杰出青年基金(2011CDA101、2013CFA035)作者简介：池汝安（1959\|），男，福建三明人，教授，博士，博士研究生导师.研究方向：分离与富集.
更新日期/Last Update: 2014-01-07