Removal of copper(II) in aqueous solution using pyrolytic biochars derived from red macroalga Porphyra tenera

被引：115
|
作者：
Park, Sung Hoon [1 ]
Cho, Hye Jung [2 ]
Ryu, Changkook [3 ]
Park, Young-Kwon [2 ]
机构：
[1] Sunchon Natl Univ, Dept Environm Engn, Sunchon 57922, South Korea
[2] Univ Seoul, Sch Environm Engn, Seoul 02504, South Korea
[3] Sungkyunkwan Univ, Sch Mech Engn, Suwon 16419, South Korea
来源：
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2016年 / 36卷
基金：
新加坡国家研究基金会;
关键词：
Macroalga; Porphyra tenera; Adsorption; Copper; Biochar; HYDROTHERMAL CARBONIZATION; ACTIVATED CARBONS; CU(II) REMOVAL; KOH ACTIVATION; HEAVY-METAL; ADSORPTION; STEAM; ZINC; OIL; CO2;
D O I：
10.1016/j.jiec.2016.02.021
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Steam activation enhanced the copper removal performance of Porphyra tenera-derived biochar significantly by increasing the quantity of exchangeable cations, whereas KOH activation reduced the copper removal performance of the biochar, despite the huge increase in specific surface area and pore volume, by washing out the exchangeable cations into the basic KOH solution. Both ion exchange and adsorption appeared to be important mechanisms for copper removal by P. tenera-derived biochar but ion exchange may be a more important mechanism. The pseudo-2nd order kinetic model and the Langmuir's isotherm model provided a good interpretation of the kinetics and equilibrium of copper removal. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：314 / 319
页数：6
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