Entrapment of ball-milled biochar in Ca-alginate beads for the removal of aqueous Cd(II)

被引：136
作者：
Wang, Bing [1 ,2 ]
Gao, Bin [2 ]
Wan, Yongshan [3 ]
机构：
[1] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China
[2] Univ Florida, Dept Agr & Biol Engn, Gainesville, FL 32611 USA
[3] US EPA, Natl Hlth & Environm Effects Res Lab, Gulf Breeze, FL 32561 USA
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2018年 / 61卷
关键词：
Composite adsorbent; Ball milling; Cadmium; Wastewater; Adsorption; HEAVY-METALS; PYROLYSIS TEMPERATURE; CARBON NANOTUBES; ACTIVATED CARBON; MAGNETIC BIOCHAR; PARTICLE-SIZE; COLUMN TESTS; WASTE-WATER; LOW-COST; ADSORPTION;
D O I：
10.1016/j.jiec.2017.12.013
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A novel adsorbent was synthesized through the entrapment of ball-milled biochar in Ca-alginate beads for the removal of aqueous Cd(II). Batch adsorption experiments were conducted to compare Cd(II) adsorption characteristics of ball-milled biochar (BMB), Ca-alginate (CA), and Ca-alginate entrapped ball milled biochar (CA-BMB). All the tested adsorbents showed excellent sorption ability. The maximum Cd (II) adsorption capacity estimated with Langmuir isotherm modeling was 251.8 mg g(-1) for CA, 227.1 mg g(-1) for CA-BMB, and 40.0 mg g(-1), for BMB. The results demonstrate that entrapment of ball-milled biochar in Ca-alginate provides a low-cost and high-effective way for the removal of aqueous Cd (II). (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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收藏
页码：161 / 168
页数：8
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