共 74 条
Synthesis of a starch-based sulfonic ion exchange resin and adsorption of dyestuffs to the resin
被引:69
作者:
Zhang, Hao
[1
,2
]
Li, Yaxing
[1
,2
]
Cheng, Bowen
[2
]
Ding, Changkun
[2
,3
]
Zhang, Yi
[1
]
机构:
[1] Tiangong Univ, Sch Text Sci & Engn, Tianjin 300387, Peoples R China
[2] Tiangong Univ, State Key Lab Separat Membranes & Membrane Proc, Tianjin 300387, Peoples R China
[3] Tiangong Univ, Sch Mat Sci & Engn, Tianjin 300387, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Starch resin;
Ion exchange;
Dyestuff absorption;
IN-SITU ATTACHMENT;
AQUEOUS-SOLUTIONS;
CATIONIC DYES;
EFFICIENT ADSORPTION;
RHODAMINE-B;
CONGO RED;
REMOVAL;
ACID;
WASTE;
KINETICS;
D O I:
10.1016/j.ijbiomac.2020.06.017
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
A starch-based ion exchange resin (SIR) was synthesized by copolymerizing raw starch with sodium medially( sulfonate and styrene. The structural and surface properties of the SIR were characterized by C-13 nuclear magnetic resonance spectroscopy, Fourier-transform infrared spectroscopy, gel permeation chromatography, scanning electron microscopy. X-ray diffractometry, thermogravimetric analysis, Brunauer-Emmett-Teller surface area analysis, and laser particle size analysis. The SIR was physicochemically and thermally stable and resistant to acids, bases, and enzymes. In static adsorption tests, the SIR had decolorization ratios (DRs) for mixed dyestuffs in wastewater of up to 84.04%, which was higher than the DR for a synthetic ion exchange resin (001 x 7, DR 77.14%). In dynamic adsorption tests, the SIR bed had a DR of 99.85% and a wastewater handling capacity 25 times the column volume. After three adsorption-regeneration cycles, the DR of the resin bed had decreased by <7.5%. The properties of the SIR, particularly the adaptability of the SIR to continuous column adsorption, make the SIR suitable for removing dyestuffs from industrial wastewater and a potential substitute for traditional sorbents such as activated carbon and synthetic resins. (C) 2020 Elsevier B.V. All rights reserved.
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页码:561 / 572
页数:12
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