RT Journal Article
T1 Fabrication and characterization of xanthan gum-cl-poly(acrylamide-co-alginic acid) hydrogel for adsorption of cadmium ions from aqueous medium
A1 Sharma, Gaurav
A1 Kumar, Amit
A1 Ghfar, Ayman A.
A1 García Peñas, Alberto
A1 Naushad, Mu.
A1 Stadler, Florian J.
AB The present research demonstrates the facile fabrication of xanthan gum-cl-poly(acrylamide-co-alginic acid) (XG-cl-poly(AAm-co-AA)) hydrogel by employing microwave-assisted copolymerization. Simultaneous copolymerization of acrylamide (AAm) and alginic acid (AA) onto xanthan gum (XG) was carried out. Different samples were fabricated by changing the concentrations of AAm and AA. A sample with maximum swelling percentage was chosen for adsorption experiments. The structural and functional characteristics of synthesized hydrogel were elucidated using diverse characterization tools. Adsorption performance of XG-cl-poly(AAm-co-AA) hydrogel was investigated for the removal of noxious cadmium (Cd(II)) ions using batch adsorption from the aqueous system, various reaction parameters optimized include pH, contact time, temperature, and concentration of Cd(II) ions and temperature. The maximum adsorption was achieved at optimal pH 7, contact time 180 min, temperature 35 °C and cadmium ion centration of 10 mg·L-1. The XG-cl-poly(AAm-co-AA) hydrogel unveiled a very high adsorption potential, and its adsorption capacities considered based on the Langmuir isotherm for Cd(II) ions was 125 mg·g-1 at 35 °C. The Cd(II) ions adsorption data fitted nicely to the Freundlich isotherm and pseudo-first-order model. The reusability investigation demonstrated that hydrogel retained its adsorption capacity even after several uses without significant loss.
PB MDPI
SN 2310-2861
YR 2022
FD 2022-01
LK https://hdl.handle.net/10016/36857
UL https://hdl.handle.net/10016/36857
LA eng
NO This article belongs to the Special Issue Advance in Composite Gels
NO The authors acknowledge the Researchers Supporting Project number (RSP-2021/8), King Saud University, Riyadh, Saudi Arabia for the financial support.
DS e-Archivo
RD 1 jul. 2024