A superabsorbent hydrogel for removal of dyes from aqueous solution

被引：0
作者：
Jie Ren
Ruirui Li
Xuemiao Wang
Meng Li
Wu Yang
机构：
[1] Northwest Normal University,Chemistry & Chemical Engineering College, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu
来源：
Journal of Polymers and the Environment | 2022年 / 30卷
关键词：
Superabsorbent; Hydrogel; Reactive dyes;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The removal of dye pollutants from dyeing and printing industrial wastewater is a very important issue, and different methods have developed for this purpose. Here, a hydrogel adsorbent gelatin/chitosan/β-cyclodextrin/sodium humate (GEL/CS/β-CD/SH) was developed by a simple method for removal of the reactive dyes in aqueous solutions. The hydrogel used as an adsorbent had a good adsorption to different kinds of organic dyes. In this work, we focused on the adsorption process of GEL/CS/β-CD/SH hydrogels to the cationic dyes methylene blue (MB) and anionic dyes acid fuchsin (AF), which are commonly used in the printing and dyeing industry. The effects of dye solution pH, ionic strength, temperature, and contact time were investigated in a batch system. The adsorption thermodynamic and dynamic behaviors towards AF and MB were investigated in detail. The adsorption process could occur spontaneously at environmental temperature. The results indicated that the maximum adsorption capacity of AF and MB reached 1666.7 mg/g and 714.3 mg/g, respectively. Moreover, the GEL/CS/β-CD/SH hydrogel could be degraded completely by microorganisms in the soil. Therefore, GEL/CS/β-CD/SH hydrogel has a potential application as an effective adsorbent for the treatment of dyeing wastewater.
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页码：3327 / 3339
页数：12
相关论文
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  • [1] Crini G(2006)Non-conventional low-cost adsorbents for dye removal: A review Bioresour Technol 97 1061-1085
  • [2] Pan B(2008)Adsorptive removal of phenol from aqueous phase by using a porous acrylic ester polymer J Hazard Mater 157 293-299
  • [3] Pan B(2005)The contribution of azo dyes to the mutagenic activity of the Cristais River Chemosphere 60 55-64
  • [4] Zhang W(2012)Tunable surface charge of ZnS: Cu nano-adsorbent induced the selective preconcentration of cationic dyes from wastewater Nanoscale 4 3665-3668
  • [5] Zhang Q(2016)Recent advances in cellulose and chitosan based membranes for water purification: a concise review Carbohydr Polym 146 148-165
  • [6] Zhang Q(2008)Biological black water treatment combined with membrane separation Water Res 42 4334-4340
  • [7] Zheng S(2018)Visible photocatalytic degradation of methylene blue on magnetic SrFe12O19 J Phys Chem Solids 123 157-161
  • [8] Umbuzeiro GA(2013)Graphene oxide-chitosan composite hydrogels as broad-spectrum adsorbents for water purification J Mater Chem A 1 1992-2001
  • [9] Freeman HS(2002)Sorption of Zn, Cd and Cr on calcite: Application to purification of industrial wastewater Min Eng J 15 539-547
  • [10] Warren SH(2015)Preparation, characterization, and ion exchange behavior of nanocomposite polyaniline zirconium(IV) selenotungstophosphate for the separation of toxic metal ions Ionics 21 1045-1055
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