磁性纳米复合物对水中亚甲基蓝的吸附及其机理

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Abstract

A novel “core/shell” structured magnetic nanocomposite Si-Fe-MNCs was prepared by coating SiO₂ on the surface of Mn-Zn ferrite magnetic nanoparticles (Fe-MNPs) through in-situ hydrolysis of tetraethylorthosilicate (TEOS). The specific surface area, morphology, magnetic properties and surface species of Si-Fe-MNCs were characterized by N₂ -adsorption/desorption, transmission electron microscopy (TEM), vibrating sample magnetometer (VSM) and Fourier transform infrared spectroscopy, respectively. The synthesized magnetic adsorbents exhibited a good performance in the removal of methylene blue (MB) from water, and gave a maximum adsorption capacity of 184.1mg/g at 318K. The adsorption of MB on Si-Fe-MNCs reached equilibrium at 120min, and exhibited the kinetics of pseudo-second-order model according to the Langmuir adsorption isotherms. Additionally, it was found that the adsorption of MB on Si-Fe-MNCs was a spontaneous endothermic physical process according to thermodynamic calculations. FT-IR revealed that MB mainly interacted with the surface functional groups of Si-Fe-MNCs and MB through hydrogen bond. The regeneration of Si-Fe-MNCs after MB adsorption was found to be realized by conducting H₂O₂, and its adsorption capacity could preserve an excellent level of 93.64mg/g after five runs.

Key words： magnetic nanocomposite methylene blue adsorption mechanism magnetic separation

Received: 17 November 2015

PACS:

X703

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	Articles by authors
	JIANG De-bin
	YU Jing
	YE Zhi-xiang
	WEI Bei
	YANG Zi-rui
	YANG Ling

Cite this article:

JIANG De-bin,YU Jing,YE Zhi-xiang等. Adsorption and mechanism of methylene blue from water by magnetic nanocomposites[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(6): 1763-1772.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2016/V36/I6/1763

[1]	任南琪,周显娇,郭婉茜,等.染料废水处理技术研究进展 [J]. 化工学报, 2013,64(1):84-94.
[2]	Mondal P K, Chauhan B. Microbial degradation of dye-containg wastewater [J]. Environment Science and Engineering, 2012,12:317-338.
[3]	Rafatullaha M, Sulaimana O, Hashima, et al. Adsorption of methylene blue on low-cost adsorbents: A review [J]. Journal of Hazardous Materials, 2010,177:70-80.
[4]	Ge Fei, Ye Hui, Li Mengmeng, et al. Efficient removal of cationic dyes from aqueous solution by polymer-modified magnetic nanoparticles [J]. Chemical Engineering Journal, 2012,198-199:11-17.
[5]	郭延辉,樊静,王建玲,等.树脂固载纳米铁对偶氮染料直接湖蓝5B的脱色性能研究 [J]. 环境工程学报, 2010,4(2):337-341.
[6]	陈君良,姚屠鹏,朱宏亮,等.巯基功能化纳米Fe3O4-高分子磁性复合材料的合成及其对水中亚甲基蓝的吸附作用 [J]. 复合材料学报, 2014,31(2):323-330.
[7]	鲍晓磊,强志民,贲伟伟,等.磁性纳米复合材料CoFeM48对水中磺胺类抗生素的吸附去除研究 [J]. 环境科学学报, 2013,33(2): 401-407.
[8]	Qiang Zhimin, Bao Xiaolei, Ben Weiwei. MCM-48modified magnetic mesoporous nanocomposite as an attractive adsorbent for the removal of sulfamethazine from water [J]. Water Research, 2013,47:4107-4114.
[9]	Ai Lunhong, Zhang Chunying, Liao Fang, et al. Removal of methylene blue from aqueous solution with magnetite loaded multi-wall carbon nanotube: Kinetic, isotherm and mechanism analysis [J]. Journal of Hazardous Materials, 2011,198:282-290.
[10]	Abbas Afkhami, Mohammad Saber-Tehrani, Hasan Bagheri. Modified maghemite nanoparticles as an efficient adsorbent for removing some cationic dyes from aqueous solution [J]. Desalination, 2010,263:240-248.
[11]	Chang Yang-Chuang, Chen Dong-Hwang. Adsorption Kinetics and Thermodynamics of Acid Dyes on a Carboxymethylated Chitosan-Conjugated Magnetic Nano-Adsorbent [J]. Macromolecular Bioscience, 2005,5:254-261.
[12]	赵静,刘勇健.磁流体在印染废水处理中的应用研究 [J]. 环境科学与管理, 2008,33(5):118-120.
[13]	张晓蕾,陈静,韩京龙,等.壳-核结构Fe3O4/MnO2磁性吸附剂的制备、表征及铅吸附去除研究 [J]. 环境科学学报, 2013, 33(10):2730-2736.
[14]	Zhang Yuanyuan, Xu Qiang, Zhang Shengxiao, et al. Preparation of thiol-modified Fe3O4@SiO2 nanoparticles and their application for gold recovery from dilute solution [J]. Separation and Purification Technology, 2013,116:391-397.
[15]	邱海浪.废碱锰电池制备锰锌铁氧体及其应用 [D]. 成都:成都信息工程大学, 2015.
[16]	姜德彬,余静,程庆峰,等.锰锌铁氧体/SiO2复合磁性材料的制备和表征 [J]. 化工环保, 2015,35(5):536-541.
[17]	肖敏,李丽,钟龙飞,等.活性炭吸附法处理印染废水的研究 [J]. 辽宁化工, 2009,38,(8):537-539.
[18]	Ni Zheming, Xia Shengjie, Wang Ligeng, et al. Treatment of methyl orange by calcined layered double hydroxides in aqueous solution: Adsorption property and kinetic studies [J]. Journal of Colloid and Interface Science, 2007,316:284-291.
[19]	Ho Y S, McKay G. Pseudo-second-order model for sorption processes [J]. Process Biochem., 1999,34:451-465.
[20]	刘斌,顾洁,邱盼,等.稻壳活性炭对水中染料的吸附特性及其回收利用 [J]. 环境科学学报, 2014,34(9):2256-2264.
[21]	邓述波,余刚.环境吸附材料及应用原理 [M]. 北京:科学出版社, 2012:211.
[22]	姚超,刘敏,李为民,等.凹凸棒石/氧化锌纳米复合材料对亚甲基蓝的吸附性能 [J]. 环境科学学报, 2010,30(6):1211-1219.
[23]	高淑玲,杨翠玲,罗鑫圣,等.坡缕石黏土污泥对水相中亚甲基蓝吸附研究 [J]. 中国环境科学, 2014,34(1):78-84.
[24]	刘健,李耀威,王刚,等.改性废报纸纤维对水中Cr(VI)的吸附研究 [J]. 中国环境科学, 2015,35(5):1368-1374.
[25]	刘新,冷言冰,谷仕艳,等.油菜秸杆外壳对水溶液中六价铬的吸附作用 [J]. 中国环境科学, 2015,35(6):1740-1748.
[26]	Gong Jiang, Liu Jie, Jiang Zhiwei, et al. A facile approach to prepare porous cup-stacked carbon nanotube with high performance in adsorption of methylene blue [J]. Journal of Colloid and Interface Science, 2015,445:195-204.
[27]	Ma Jie, Yu Fei, Zhou Lu, et al. Enhanced Adsorptive Removal of Methyl Orange and Methylene Blue from Aqueous Solution by Alkali-Activated Multiwalled Carbon Nanotubes [J]. ACS Applied Materials & Interfaces, 2012,4:5749-5760.
[28]	Lin Daohui, Xing Baoshan. Adsorption of Phenolic Compounds by Carbon Nanotubes: Role of Aromaticity and Substitution of Hydroxyl Groups [J] Environmental Science & Technology, 2008,42(19):7254-7259.