Effective adsorption of methylene blue by biodegradable superabsorbent cassava starch-based hydrogel

被引：85

作者：

Junlapong, Kanda ^{[1
]}

Maijan, Pattarawadee ^{[1
]}

Chaibundit, Chiraphon ^{[1
]}

Chantarak, Sirinya ^{[1
]}

机构：

[1] Prince Songkla Univ, Fac Sci, Dept Mat Sci & Technol, Hat Yai 90110, Songkhla, Thailand

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2020年 / 158卷

关键词：

Water absorption; Dye; Removal ef ficiency; Adsorption-desorption; Porous material; CONTROLLED-RELEASE; SLOW-RELEASE; DYE REMOVAL; EFFICIENT REMOVAL; AQUEOUS-SOLUTIONS; SEMI-IPNS; WATER; POLYACRYLAMIDE; CHITOSAN; POLYMER;

D O I：

10.1016/j.ijbiomac.2020.04.247

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：

Superabsorbent hydrogels were synthesized from cassava starch (CS) and polyacrylamide (PAM) via radical po-lymerization. Scanning electron microscope revealed the porous structure of the hydrogels. Pore size was smaller at higher CS contents. Hydrogel containing 50 wt% CS (CS50) showed excellent water absorbency of >8000%, which was much greater than that of CS0 (pure PAM) hydrogel. This CS50 hydrogel removed >85% of methylene blue (MB) in <10 h with the greatest adsorption capacity of 2000 mg MB/g. The experimental results fitted the Freundlich and pseudo-second order models. After 4 cycles of use, the hydrogel could still remove >50% of MB in solution. Interestingly, the hydrogels were photodegradable and biodegradable. Buried in soil, the CS50 hydro -gel was 80% degraded within 30 days whereas pure PAM was only 22% degraded. p (C) 2020 Elsevier B.V. All rights reserved.

引用

页码：258 / 264

页数：7

共 46 条

[11] Biodegradation of polyacrylamide by anaerobic digestion under mesophilic condition and its performance in actual dewatered sludge system
Dai, Xiaohu
Luo, Fan
Yi, Jing
He, Qunbiao
Dong, Bin
[J]. BIORESOURCE TECHNOLOGY, 2014, 153 : 55 - 61
[12] Superabsorbent hydrogels via graft polymerization of acrylic acid from chitosan-cellulose hybrid and their potential in controlled release of soil nutrients
Essawy, Hisham A.
Ghazy, Mohamed B. M.
Abd El-Hai, Farag
Mohamed, Magdy F.
[J]. INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 2016, 89 : 144 - 151
[13] Of the adsorption of gases. Section II. Kinetics and energetics of gas adsorption. Introductory paper to section II.
Freundlich, H
[J]. TRANSACTIONS OF THE FARADAY SOCIETY, 1932, 28 : 0195 - 0201
[14] Application of low-cost adsorbents for dye removal - A review
Gupta, V. K.
Suhas
[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2009, 90 (08) : 2313 - 2342
[15] Hydrogel nanoparticles in drug delivery
Hamidi, Mehrdad
Azadi, Amir
Rafiei, Pedram
[J]. ADVANCED DRUG DELIVERY REVIEWS, 2008, 60 (15) : 1638 - 1649
[16] Controlled-release fertilizer encapsulated by starch/polyvinyl alcohol coating
Han, Xiaozhao
Chen, Sensen
Hu, Xianguo
[J]. DESALINATION, 2009, 240 (1-3) : 21 - 26
[17] Pseudo-second order model for sorption processes
Ho, YS
McKay, G
[J]. PROCESS BIOCHEMISTRY, 1999, 34 (05) : 451 - 465
[18] Preparation and Properties of a Degradable Interpenetrating Polymer Networks Based on Starch with Water Retention, Amelioration of Soil, and Slow Release of Nitrogen and Phosphorus Fertilizer
Jin, Shuping
Wang, Yongsheng
He, Jinfang
Yang, Yan
Yu, Xinghai
Yue, Guoren
[J]. JOURNAL OF APPLIED POLYMER SCIENCE, 2013, 128 (01) : 407 - 415
[19] Characterization of irradiated starches by using FT-Raman and FTIR spectroscopy
Kizil, R
Irudayaraj, J
Seetharaman, K
[J]. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2002, 50 (14) : 3912 - 3918
[20] The binding of anionic dyes by cross-linked cationic starches
Klimaviciute, Rima
Riauka, Aurimas
Zemaitaitis, Algirdas
[J]. JOURNAL OF POLYMER RESEARCH, 2007, 14 (01) : 67 - 73

← 1 2 3 4 5 →