Unraveling sorption of Cr (VI) from aqueous solution by FeCl3 and ZnCl2-modified corn stalks biochar: Implicit mechanism and application

被引：110
作者：
Yu, Yang [1 ]
An, Qiang [1 ]
Jin, Lin [1 ]
Luo, Ning [1 ]
Li, Zheng [1 ]
Jiang, Junnan [1 ]
机构：
[1] Chongqing Univ, Minist Educ, Key Lab Three Gorges Reservoir Reg Ecoenviron, Chongqing 400045, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2020年 / 297卷
关键词：
Functionalized biochar; Iron/zinc; Modified; Cr(VI) removal; Mobility control; HEXAVALENT CHROMIUM; ADSORPTION BEHAVIOR; ENHANCED REMOVAL; CR(VI) REMOVAL; OXIDE; REDUCTION; CARBON; WATER; NANOCOMPOSITE; NANOPARTICLES;
D O I：
10.1016/j.biortech.2019.122466
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
A novel functionalized biochar was prepared using corn stalks for efficiently removal and mobility control of Cr (VI). Compared to single modified biochar, iron/zinc biochar (Fe@Zn@HBC) displayed a better removal property and the maximum adsorption capacity of Fe@Zn@HBC reached 138.89 mg.g(-1) at pH = 2 and 260 +/- 10 Lux illumination. The positive charge on biochar might be the main reason promoting the rapid adsorption of Cr(VI) by electrostatic interaction. Reduction functional groups and photocatalysis (derived from ZnFe2O4 and B-H functional group) provided electrons for Cr(VI) reduction. And the SiO2 could enhance the reduction process by improving electrons transfer. Finally, FeCr2O4 and ZnFeCrO4 were formed by coprecipitation and ion exchange. Meanwhile, Fe@Zn@HBC showed a high solid-liquid magnetic separation potential due to the Fe3O4 and ZnFe2O4. In soil column experiment, Fe@Zn@HBC displayed a superior mobility control on biochar particles and Cr(VI) solution under the external magnetic field.
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页数：7
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共 43 条
[1]   The potential adsorption mechanism of the biochars with different modification processes to Cr(VI) [J].
An, Qiang ;
Li, Xue-Qin ;
Nan, Hong-Yan ;
Yu, Yang ;
Jiang, Jun-Nan .
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 2018, 25 (31) :31346-31357
[2]   Synergistic ZnFe2O4-carbon allotropes nanocomposite photocatalyst for norfloxacin degradation and Cr (VI) reduction [J].
Behera, Arjun ;
Mansingh, Sriram ;
Das, Kundan Kumar ;
Parida, Kulamani .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2019, 544 :96-111
[3]   Transport and retention of biochar nanoparticles in a paddy soil under environmentally-relevant solution chemistry conditions [J].
Chen, Ming ;
Wang, Dengjun ;
Yang, Fan ;
Xu, Xiaoyun ;
Xu, Nan ;
Cao, Xinde .
ENVIRONMENTAL POLLUTION, 2017, 230 :540-549
[4]   A novel nanocomposite with superior electrocatalytic activity: A magnetic property based ZnFe2O4 nanocubes embellished with reduced graphene oxide by facile ultrasonic approach [J].
Chen, Tse-Wei ;
Rajaji, Umamaheswari ;
Chen, Shen-Ming ;
Al Mogren, Muneerah Mogren ;
Hochlaf, Majdi ;
Al Harbi, Sarah Dhaif Allah ;
Ramalingam, R. Jothi .
ULTRASONICS SONOCHEMISTRY, 2019, 57 :116-124
[5]   Adsorption behavior and mechanism of Cr(VI) by modified biochar derived from Enteromorpha prolifera [J].
Chen, Youyuan ;
Wang, Baoying ;
Xin, Jia ;
Sun, Ping ;
Wu, Dan .
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, 2018, 164 :440-447
[6]   Adsorption kinetics of magnetic biochar derived from peanut hull on removal of Cr (VI) from aqueous solution: Effects of production conditions and particle size [J].
Han, Yitong ;
Cao, Xi ;
Ouyang, Xin ;
Sohi, Saran P. ;
Chen, Jiawei .
CHEMOSPHERE, 2016, 145 :336-341
[7]   Cr(VI) removal from aqueous solution using biochar modified with Mg/Al-layered double hydroxide intercalated with ethylenediaminetetraacetic acid [J].
Huang, Danlian ;
Liu, Caihong ;
Zhang, Chen ;
Deng, Rui ;
Wang, Rongzhong ;
Xue, Wenjing ;
Luo, Hao ;
Zeng, Guangming ;
Zhang, Qing ;
Guo, Xueying .
BIORESOURCE TECHNOLOGY, 2019, 276 :127-132
[8]   A facile one-pot hydrothermal synthesis of hydroxyapatite/biochar nanocomposites: Adsorption behavior and mechanisms for the removal of copper(II) from aqueous media [J].
Jung, Kyung-Won ;
Lee, Seon Yong ;
Choi, Jae-Woo ;
Lee, Young Jae .
CHEMICAL ENGINEERING JOURNAL, 2019, 369 :529-541
[9]   Formation of ordered macroporous ZnFe2O4 anode materials for highly reversible lithium storage [J].
Kim, Jong Guk ;
Noh, Yuseong ;
Kim, Youngmin ;
Lee, Seonhwa ;
Kim, Won Bae .
CHEMICAL ENGINEERING JOURNAL, 2019, 372 :363-372
[10]   Investigations on magnetic and electrical properties of Zn doped Fe2O3 nanoparticles and their correlation with local electronic structures [J].
Kumar, Parmod ;
Sharma, Vikas ;
Singh, Jitendra P. ;
Kumar, Ashish ;
Chahal, Surjeet ;
Sachdev, K. ;
Chae, K. H. ;
Kumar, Ashok ;
Asokan, K. ;
Kanjilal, D. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2019, 489
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