Sorption of lead and methylene blue onto hickory biochars from different pyrolysis temperatures: Importance of physicochemical properties

被引:87
作者
Ding, Zhuhong [1 ,2 ]
Wan, Yongshang [3 ]
Hu, Xin [2 ,4 ,5 ]
Wang, Shengsen [2 ]
Zimmerman, Andrew R. [6 ]
Gao, Bin [2 ]
机构
[1] Nanjing Tech Univ, Sch Environm, 30 Puzhu Southern Rd, Nanjing 211816, Jiangsu, Peoples R China
[2] Univ Florida, Dept Agr & Biol Engn, Gainesville, FL 32611 USA
[3] South Florida Water Management Dist, W Palm Beach, FL 33406 USA
[4] Nanjing Univ, State Key Lab Analyt Chem Life Sci, Sch Chem & Chem Engn, 20 Hankou Rd, Nanjing 210093, Jiangsu, Peoples R China
[5] Nanjing Univ, Ctr Mat Anal, 20 Hankou Rd, Nanjing 210093, Jiangsu, Peoples R China
[6] Univ Florida, Dept Geol Sci, Gainesville, FL 32611 USA
基金
美国国家科学基金会;
关键词
Biochar; Heavy metal; Organic contaminant; Dye; Sorption; HYDROTHERMAL CARBONIZATION; LOW-COST; WOOD; SOIL; ADSORBENT; REMOVAL; CHARS; WATER;
D O I
10.1016/j.jiec.2016.03.035
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Hickory biochars were obtained through slow pyrolysis under 350 degrees C, 450 degrees C, and 600 degrees C. Multiple characterization techniques were used to characterize the biochars and showed pyrolysis temperature affected their O/C ratios, surface areas, cation-exchange capacities, zeta potential, surface acidic groups. As the result, the biochars showed different adsorption ability to Pb(II) and methylene blue in aqueous solutions, which was due to the important roles of the physicochemical properties of the biochars in controlling the sorption processes. This work provided a comprehensive evaluation of biochars, and thus expanded on previous research on effects of pyrolysis temperature on biochar properties. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:261 / 267
页数:7
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