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Enhancement of As(V) adsorption from aqueous solution by a magnetic chitosan/biochar composite

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WOS被引频次:23
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成果类型:
期刊论文
作者:
Liu, Shaobo;Huang, Binyan*;Chai, Liyuan;Liu, Yunguo;Zeng, Guangming;Wang, Xin;Zeng, Wei;Shang, Meirong;Deng, Jiaqin;Zhou, Zan
通讯作者:
Huang, Binyan
作者机构:
[Liu, Shaobo; Chai, Liyuan] Cent S Univ, Sch Met & Environm, Changsha 410083, Peoples R China.
[Liu, Shaobo] Cent S Univ, Sch Architecture & Art, Changsha 410083, Peoples R China.
[Zhou, Zan; Zeng, Wei; Liu, Yunguo; Zeng, Guangming; Deng, Jiaqin; Shang, Meirong; Huang, Binyan] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
[Zhou, Zan; Zeng, Wei; Liu, Yunguo; Zeng, Guangming; Deng, Jiaqin; Shang, Meirong; Huang, Binyan] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Hunan, Peoples R China.
[Wang, Xin] Hunan Normal Univ, Coll Resources & Environm Sci, Changsha 410006, Hunan, Peoples R China.
通讯机构:
[Huang, Binyan] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China.
[Huang, Binyan] Hunan Univ, Key Lab Environm Biol & Pollut Control, Minist Educ, Changsha 410082, Hunan, Peoples R China.
语种:
英文
期刊:
RSC Advances
ISSN:
2046-2069
年:
2017
页码:
10891-10900
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:化学;WOS学科类别:Chemistry, Multidisciplinary
入藏号:
WOS:000395796700037;EI:20170803367100
机构署名:
本校为第一机构
院系归属:
冶金与环境学院
建筑与艺术学院
摘要:
In this study, a magnetic chitosan/biochar composite (MCB) was prepared successfully, and characterized by SEM, TEM, VSM, XRD, FTIR, XPS, and zeta-potential to obtain its physical and chemical properties. The influence of different sorption parameters such as pH, contact time, initial As(v) concentration, and temperature on As(v) removal were studied thoroughly in order to optimize the reaction conditions. The results showed that the MCB adsorbed more As(v) (11.961 mg g<sup>&minus;1</sup>) than pristine biochar (3.681 mg g<sup>&minus;1</sup>). In addition, the adsorption behavior could be well described by a pseudo-second-order and Langmuir model. Thermodynamic parameters revealed that the sorption reaction was a spontaneous and endothermic process. The adsorbed MCB could be effectively regenerated by 1.0 mol L<sup>&minus;1</sup>NaOH, and the adsorption capacity decreased from 11.823 to 8.078 mg g<sup>&minus;1</sup>in five cycles. In conclusion, MCB could be used as an efficient adsorbent for environment purification and conveniently separated from aqueous solution after adsorption. &copy;The Royal Society of Chemistry.
参考文献:
Adamczuk A, 2015, CHEM ENG J, V274, P200, DOI 10.1016/j.cej.2015.03.088
Agrafioti E, 2014, J ENVIRON MANAGE, V133, P309, DOI 10.1016/j.jenvman.2013.12.007
Ali I, 2012, CHEM REV, V112, P5073, DOI 10.1021/cr300133d
Altundogan HS, 2002, WASTE MANAGE, V22, P357, DOI 10.1016/S0956-053X(01)00041-1
Andjelkovic I, 2015, ACS APPL MATER INTER, V7, P9758, DOI 10.1021/acsami.5b01624

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