XJIPC OpenIR  > 环境科学与技术研究室
Highly efficient and selective removal of mercury ions using hyperbranched polyethylenimine functionalized carboxymethyl chitosan composite adsorbent
Zeng, HH (Zeng, Hehua)[ 1,2,4 ]; Wang, L (Wang, Lan)[ 1 ]; Zhang, D (Zhang, Dan)[ 1,3 ]; Yan, P (Yan, Peng)[ 1 ]; Nie, J (Nie, Jing)[ 1 ]; Sharma, VK (Sharma, Virender K.)[ 5 ]; Wang, CY (Wang, Chuanyi)[ 1,3 ]
2019
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume358Issue:2Pages:253-263
Abstract

A cost-effective adsorbent for highly efficient removal of mercuric Hg(II) ions from aqueous media remains a great challenge. Herein, a novel polymer-based adsorbent of hyperbranched polyethylenimine functionalized carboxymethyl chitosan semi-interpenetrating network composite (HPFC) was fabricated through a facile one-step crosslinking reaction. Notably, the as-prepared adsorbent demonstrated ultra-high adsorption capacity toward the removal of Hg(II) ions. Upon treatment with 20 mg-dosage of HPFC in an aqueous medium (20 mL), the concentration of Hg(II) is decreased from 798.1 mg/L to 0.02 mg/L, which is below the national drainage standard of 0.05 mg/L for industrial wastewater in China. A kinetic study shows that the adsorption of Hg(II) ions follows the pseudo-second-order model, indicating chemical adsorption between Hg(II) ions and HPFC. The maximum adsorption capacity is 1594 mg/g, which is higher than that of many other currently known natural polymer-based adsorbent. Furthermore, this adsorbent exhibits excellent selectivity for removing Hg(II) ions, and the selectivity coefficient to Hg(II) ions is 3-4 orders of magnitude higher than that to Cu(II) ions, Cd(II) ions and Pb(II) ions, respectively. Based on the measurements of Fourier transform infrared spectrum (FTIR) and X-ray photoelectron spectroscopy (XPS) and the density functional theory (DFT) calculations, the adsorption mechanism was proposed. The removal of Hg(II) ions by HPFC is mainly controlled by the interaction between Hg(II) ions and nitrogen functional groups (i.e., amine and imine groups). Significantly, HPFC has superior reusability and could be easily regenerated and reused multiple times. The developed HPFC adsorbent holds high potential in remediating water polluted with Hg(II) ions.

KeywordCarboxymethyl chitosan Polyethylenimine functionalization Hg(II) removal High efficiency Selectivity DFT calculation
DOI10.1016/j.cej.2018.10.001
Indexed BySCI
WOS IDWOS:000450105700025
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/7107
Collection环境科学与技术研究室
Affiliation1.Chinese Acad Sci, Lab Environm Sci & Technol, Xinjiang Tech Inst Phys & Chem, Key Lab Funct Mat & Devices Special Environm, Urumqi 830011, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Shaanxi Univ Sci & Technol, Sch Environm Sci & Engn, Xian 710021, Shaanxi, Peoples R China
4.Changji Univ, Dept Chem & Appl Chem, Changji 831100, Peoples R China
5.Texas A&M Univ, Sch Publ Hlth, Dept Environm & Sustainabil, Program Environm & Sustainabil, 212 Adriance Lab Rod, College Stn, TX 77843 USA
Recommended Citation
GB/T 7714
Zeng, HH ,Wang, L ,Zhang, D ,et al. Highly efficient and selective removal of mercury ions using hyperbranched polyethylenimine functionalized carboxymethyl chitosan composite adsorbent[J]. CHEMICAL ENGINEERING JOURNAL,2019,358(2):253-263.
APA Zeng, HH .,Wang, L .,Zhang, D .,Yan, P .,Nie, J .,...&Wang, CY .(2019).Highly efficient and selective removal of mercury ions using hyperbranched polyethylenimine functionalized carboxymethyl chitosan composite adsorbent.CHEMICAL ENGINEERING JOURNAL,358(2),253-263.
MLA Zeng, HH ,et al."Highly efficient and selective removal of mercury ions using hyperbranched polyethylenimine functionalized carboxymethyl chitosan composite adsorbent".CHEMICAL ENGINEERING JOURNAL 358.2(2019):253-263.
Files in This Item:
File Name/Size DocType Version Access License
Highly efficient and(2825KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zeng, HH (Zeng, Hehua)[ 1,2,4 ]]'s Articles
[Wang, L (Wang, Lan)[ 1 ]]'s Articles
[Zhang, D (Zhang, Dan)[ 1,3 ]]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zeng, HH (Zeng, Hehua)[ 1,2,4 ]]'s Articles
[Wang, L (Wang, Lan)[ 1 ]]'s Articles
[Zhang, D (Zhang, Dan)[ 1,3 ]]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zeng, HH (Zeng, Hehua)[ 1,2,4 ]]'s Articles
[Wang, L (Wang, Lan)[ 1 ]]'s Articles
[Zhang, D (Zhang, Dan)[ 1,3 ]]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Highly efficient and selective removal of mercury ions using hyperbranched polyethylenimine functionalized carboxymethyl chitosan composite adsorbent.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.