pH Sensitive Dual Cross-Linked Anionic and Amphoteric Interpenetrating Network Hydrogels for Adsorptive Removal of Anionic and Cationic Dyes

被引:1
作者
Ahmed, Md. Sabbir [1 ]
Maniruzzaman, Md. [1 ]
Al-Mamun, Md. Rubel [1 ]
Kanok, Kibreya Kabir [1 ]
Badal, Md. Mizanur Rahman [1 ]
Aziz, Md. Abdul [2 ]
Mazumder, Mohammad A. Jafar [3 ,4 ]
Ahamed, Parbhej [1 ]
机构
[1] Khulna Univ Engn & Technol, Dept Chem, Khulna 9203, Bangladesh
[2] King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Hydrogen & Energy Storag, Dhahran 31261, Saudi Arabia
[3] King Fahd Univ Petr & Minerals, Dept Chem, Dhahran 31261, Saudi Arabia
[4] King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Adv Mat, Dhahran 31261, Saudi Arabia
关键词
Crosslinked polymer interlace; Dyes; Hydrogels; Wastewater treatment; CARBOXYMETHYL CELLULOSE; EFFICIENT REMOVAL; ZERO CHARGE; CHITOSAN; NANOPARTICLES; ADSORBENT; STARCH; POINT;
D O I
10.1002/ajoc.202400238
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The contamination of water by organic dye compounds are worldwide environmental problem due to their highly toxic nature. To address this environmental issue, a simple technique with highly efficient dye removal was developed to prepare pH- sensitive dual-crosslinked anionic and amphoteric interpenetrating network (IPN) hydrogels based on Na-carboxymethyl cellulose (Na-CMC) using jute stick-based cellulose. Crosslinked Na-CMC and crosslinked kappa-carrageenan (KC) were interlaced by H-bonding in anionic IPN hydrogel (An-gel), but crosslinked Na-CMC and crosslinked Chitosan (CS) were interlaced by electrostatic interaction in amphoteric IPN hydrogel (Am-gel). In various operating conditions (pH, temperature, etc.) An-gel displayed a higher number of swelling ratios of about 2560% at pH 7.2 and Am-gel of about 1874% at pH 5.5. Based on the point of zero charge, An-gel achieved the maximum removal efficiency of 81.62 % for methylene blue (MB) at pH 7.2, whereas Am-gel achieved 85.38% removal efficiency for eosin yellow (EY) at pH 5.5. The adsorption kinetics of IPN hydrogels followed a pseudo-second order model and best fitted by Langmuir isotherm model. The removal efficiency of MB and EY decreased slightly with increasing temperature. The values of Delta H degrees, Delta G degrees, and Delta S degrees indicated an exothermic, spontaneous, and disordered adsorption process. NaCMC is synthesized from jute stick-based alpha-cellulose. To prepare double network-based anionic and amphoteric IPN hydrogel, crosslinked Na-CMC (single network) is interlaced with another anionic and cationic crosslinked polymer (single network), respectively. Due to this IPN structure, the porosity of hydrogel has increased, finding a good swelling ratio and showing a high dye removal efficiency from aqueous solution. image
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页数:21
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