| Efficient Adsorption and Recovery of Pb(II) from Aqueous Solution by a Granular pH-Sensitive Chitosan-based Semi-IPN Hydrogel | |
| Department | 环境材料与生态化学研究发展中心 |
Huang DJ(黄大建)1,2 ; Wang WB(王文波)1; Kang YR(康玉茹)1; Wang AQ(王爱勤)1; Wang AQ(王爱勤)
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| 2012 | |
| Source Publication | Journal of Macromolecular Science Part A Pure and Applied Chemistry
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| ISSN | 1060-1325 |
| Volume | 49Issue:11Pages:971-979 |
| Abstract | A series of granular pH-sensitive semi-interpenetrating polymer network (semi-IPN) hydrogels based on chitosan (CTS), acrylic acid (AA) and gelatine (GE) were utilized for the adsorption and recycle of Pb(II) from aqueous solutions. The composite hydrogels have been characterized by FT-IR and TGA. The effects of contact time, pH value and initial Pb(II) concentration on the adsorption were investigated. Results indicated that the adsorption capacity of the hydrogel increased with increasing pH value and initial Pb(II) concentration, and a pH-sensitive adsorption characteristic was presented. The adsorption rate of the semi-IPN hydrogels on Pb(II) is fast with an adsorption rate constant of 14.9790 mg/(g.s), and adsorption equilibrium could be reached within 10 min. The adsorption isotherms of the hydrogels for Pb(II) could be described well by the Langmuir equation, rather than the Freundlich equation. The as-prepared hydrogels showed good reusability with 0.05 mol/lHNO3 solutions as the desorbing agent and 0.1 mol/l NaOH solutions as the regeneration agent, respectively. After five consecutive adsorption-desorption processes, the semi-IPN hydrogel with 20 wt% GE may reach 85.26% of its initial adsorption capacity. In addition, the adsorbed Pb(II) can be quantitatively recovered by simply eluting the hydrogel with dilute HNO3 solution, and a recovery ratio of 89.27% was reached for the semi-IPN hydrogel. The satisfactory adsorption amount is mainly derived from the chelating of functional groups (i.e. -COO- and -NH2) with Pb(II) ions. The hydrogel adsorbents exhibited excellent affinity for Pb(II), and can be applied to treat wastewater containing heavy metal ion and simultaneously recover the valuable metal sources. |
| Keyword | Granular Hydrogel Chitosan Gelatin Adsorption And Recovery Heavy Metal |
| Subject Area | 功能复合材料 |
| DOI | 10.1080/10601325.2012.722859 |
| Funding Organization | the National Natural Science Foundation of China (No. 51003112;21107116);the Science and Technology Support Project of Jiangsu Provincial Science and Technology Department (No. BY2010012) |
| Indexed By | SCI |
| If | 0.807 |
| Language | 英语 |
| Funding Project | 功能复合材料组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/2544 |
| Collection | 环境材料与生态化学研究发展中心 |
| Corresponding Author | Wang AQ(王爱勤) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, Ctr Ecomat & Green Chem, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China |
| Recommended Citation GB/T 7714 | Huang DJ,Wang WB,Kang YR,et al. Efficient Adsorption and Recovery of Pb(II) from Aqueous Solution by a Granular pH-Sensitive Chitosan-based Semi-IPN Hydrogel[J]. Journal of Macromolecular Science Part A Pure and Applied Chemistry,2012,49(11):971-979. |
| APA | Huang DJ,Wang WB,Kang YR,Wang AQ,&王爱勤.(2012).Efficient Adsorption and Recovery of Pb(II) from Aqueous Solution by a Granular pH-Sensitive Chitosan-based Semi-IPN Hydrogel.Journal of Macromolecular Science Part A Pure and Applied Chemistry,49(11),971-979. |
| MLA | Huang DJ,et al."Efficient Adsorption and Recovery of Pb(II) from Aqueous Solution by a Granular pH-Sensitive Chitosan-based Semi-IPN Hydrogel".Journal of Macromolecular Science Part A Pure and Applied Chemistry 49.11(2012):971-979. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 20124911971979.pdf（1085KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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