一种新型改性交联壳聚糖的制备及其对废水中四环素的去除机理

doi:10.6040/j.issn.1672-3961.0.2013.329

山东大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (5): 65-71.doi: 10.6040/j.issn.1672-3961.0.2013.329

一种新型改性交联壳聚糖的制备及其对废水中四环素的去除机理

赵文杰¹, 孙雪菲¹, 丁可², 王曙光¹

1. 山东大学环境科学与工程学院, 山东济南 250100;
2. 临沂市环境监测站, 山东临沂 276001

收稿日期:2013-11-11 修回日期:2014-05-16 发布日期:2013-11-11
通讯作者: 王曙光(1970-), 男, 山东烟台人, 教授, 博导, 主要研究方向为水污染控制.E-mail:wsg@sdu.edu.cn E-mail:wsg@sdu.edu.cn
作者简介:赵文杰(1988-), 男, 山东莱芜人, 硕士研究生, 主要研究方向为水污染控制.E-mail:731576324@qq.com
基金资助:
山东省自然科学基金杰出青年基金资助项目(JQ201116) ; 国家自然科学基金资助项目(51178254)

The preparation of a new kind of modified chitosan material and its removing mechanism of tetracycline from waste water

ZHAO Wenjie¹, SUN Xuefei¹, DING Ke², WANG Shuguang¹

1. School of Environmental Science and Engineering, Shandong University, Jinan 250100, Shandong, China;
2. Linyi Environmental Monitoring Institute, Linyi 276001, Shandong, China

Received:2013-11-11 Revised:2014-05-16 Published:2013-11-11

摘要/Abstract

摘要： 为了提高传统壳聚糖材料的吸附效果,将壳聚糖进行交联并通过负载二氧化锰进行改性。利用扫描电镜对材料进行表征,并研究了二氧化锰的负载量、反应温度、溶液pH、离子浓度对改性交联壳聚糖吸附溶液中TC的影响。研究结果表明,在改性交联壳聚糖颗粒的二氧化锰负载量为0.344 mg/g,温度为318 K, pH为4～11,溶液中阳离子浓度为0时吸附效果最佳。吸附动力学符合伪二级动力学模型,吸附等温线符合Freundich模型,热力学分析说明该吸附过程是自发的吸热反应。另外发现,改性交联壳聚糖填充在管柱中之后对TC的连续吸附处理能力良好。

关键词: 交联, 负载, 四环素, 壳聚糖, 吸附, 二氧化锰

Abstract: Chitosan was cross-linked and loaded by MnO₂ to improve the adsorption capacity of traditional chitosan material. Scanning electron microscopy(SEM)was used to characterize the materials. The effects of loading MnO₂, temperature, pH and ion concentration on the adsorption of TC were investigated comprehensively. When loading rate of MnO₂ was 0.344 mg/g, T=318 K, pH=4～11, and the ion concentration was 0, the adsorption efficiency was the best. Pseudo-second-order kinetic model and Freundlich adsorption isotherm fitted well to the adsorption process In addition, the adsorption process was spontaneous and endothermic. The results also showed that the new chitosan material performed well after being filled in column by continuous operation.

Key words: cross-linked, manganese (IV) oxide, chitosan, adsorption, tetracycline, loading

中图分类号:

赵文杰, 孙雪菲, 丁可, 王曙光. 一种新型改性交联壳聚糖的制备及其对废水中四环素的去除机理[J]. 山东大学学报(工学版), 2014, 44(5): 65-71.

ZHAO Wenjie, SUN Xuefei, DING Ke, WANG Shuguang. The preparation of a new kind of modified chitosan material and its removing mechanism of tetracycline from waste water[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2014, 44(5): 65-71.

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一种新型改性交联壳聚糖的制备及其对废水中四环素的去除机理

The preparation of a new kind of modified chitosan material and its removing mechanism of tetracycline from waste water

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