Removal of Cu(Ⅱ) from Aqueous Solution Using a Novel Crosslinked Alumina-Chitosan Hybrid Adsorbent

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (4): 641-648.

Removal of Cu(Ⅱ) from Aqueous Solution Using a Novel Crosslinked Alumina-Chitosan Hybrid Adsorbent

季桂娟¹, 包维维¹, 高桂梅¹, 安佰超², 邹海峰¹, 甘树才¹

1. College of Chemistry, Jilin University, Changchun 130026, China;
2. College of Engineering and Architecture, Liaoning Technical University, Fuxin 123000, China

收稿日期:2011-03-07 修回日期:2011-08-20 出版日期:2012-08-28 发布日期:2012-09-15
通讯作者: GAN Shucai, E-mail:gansc@jlu.edu.cn
基金资助:
Supported by the National Innovative Projects with Cooperation in terms of Production,Study and Research (OSR-05);the National Science and Technology Major Projects (2008ZX05018-005)

Removal of Cu(Ⅱ) from Aqueous Solution Using a Novel Crosslinked Alumina-Chitosan Hybrid Adsorbent

JI Guijuan¹, BAO Weiwei¹, GAO Guimei¹, AN Baichao², ZOU Haifeng¹, GAN Shucai¹

1. College of Chemistry, Jilin University, Changchun 130026, China;
2. College of Engineering and Architecture, Liaoning Technical University, Fuxin 123000, China

Received:2011-03-07 Revised:2011-08-20 Online:2012-08-28 Published:2012-09-15
Supported by:
Supported by the National Innovative Projects with Cooperation in terms of Production,Study and Research (OSR-05);the National Science and Technology Major Projects (2008ZX05018-005)

摘要/Abstract

摘要： A novel biosorbent was developed by coating chitosan,a naturally and abundantly available biopolymer,on to activated alumina based on oil shale ash via crosslinking.The adsorbent was characterized by various techniques,such as Fourier transform infrared spectroscopy,scanning electron microscopy,thermogravimetric-differential thermal analysis,and X-ray photoelectron spectroscope.Batch isothermal equilibrium adsorption experiments were condcted to evaluate the adsorbent for the removal of Cu(Ⅱ) from wastewater.The effect of pH and agitation time on the adsorption capacity was also investigated,indicating that the optimum pH was 6.0.The equilibrium adsorption data were correlated with Langmuir and Freundlich models.The maximum monolayer adsorption capacity of chitosan coated alumina sorbent as obtained from Langmuir adsorption isotherm was found to be 315.46 mg·g^-1 for Cu(Ⅱ).The adsorbent loaded with Cu(Ⅱ) was readily regenerated using 0.1 mol·L^-1 sodium hydroxide solution.All these indicated that chitosan coated alumina adsorbent not only have high adsorption activity,but also had good stability in the wastewater treatment process.

关键词: chitosan, adsorbent, alumina, Cu(Ⅱ), oil shale ash

Abstract: A novel biosorbent was developed by coating chitosan,a naturally and abundantly available biopolymer,on to activated alumina based on oil shale ash via crosslinking.The adsorbent was characterized by various techniques,such as Fourier transform infrared spectroscopy,scanning electron microscopy,thermogravimetric-differential thermal analysis,and X-ray photoelectron spectroscope.Batch isothermal equilibrium adsorption experiments were condcted to evaluate the adsorbent for the removal of Cu(Ⅱ) from wastewater.The effect of pH and agitation time on the adsorption capacity was also investigated,indicating that the optimum pH was 6.0.The equilibrium adsorption data were correlated with Langmuir and Freundlich models.The maximum monolayer adsorption capacity of chitosan coated alumina sorbent as obtained from Langmuir adsorption isotherm was found to be 315.46 mg·g^-1 for Cu(Ⅱ).The adsorbent loaded with Cu(Ⅱ) was readily regenerated using 0.1 mol·L^-1 sodium hydroxide solution.All these indicated that chitosan coated alumina adsorbent not only have high adsorption activity,but also had good stability in the wastewater treatment process.

Key words: chitosan, adsorbent, alumina, Cu(Ⅱ), oil shale ash

季桂娟, 包维维, 高桂梅, 安佰超, 邹海峰, 甘树才. Removal of Cu(Ⅱ) from Aqueous Solution Using a Novel Crosslinked Alumina-Chitosan Hybrid Adsorbent[J]. Chinese Journal of Chemical Engineering, 2012, 20(4): 641-648.

JI Guijuan, BAO Weiwei, GAO Guimei, AN Baichao, ZOU Haifeng, GAN Shucai. Removal of Cu(Ⅱ) from Aqueous Solution Using a Novel Crosslinked Alumina-Chitosan Hybrid Adsorbent[J]. Chin.J.Chem.Eng., 2012, 20(4): 641-648.

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Removal of Cu(Ⅱ) from Aqueous Solution Using a Novel Crosslinked Alumina-Chitosan Hybrid Adsorbent

Removal of Cu(Ⅱ) from Aqueous Solution Using a Novel Crosslinked Alumina-Chitosan Hybrid Adsorbent

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