@Article{jrm.2023.024521,
AUTHOR = {Chao Wang, Xuezhen Feng, Wanbing Li, Shibin Shang, Haibo Zhang},
TITLE = {Fabricating Cationic Lignin Hydrogels for Dye Adsorption},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {11},
YEAR = {2023},
NUMBER = {4},
PAGES = {1793--1805},
URL = {http://www.techscience.com/jrm/v11n4/50686},
ISSN = {2164-6341},
ABSTRACT = {Due to the low content of adsorption-active groups in lignin, its application in the field of adsorption is limited.
Herein, we first prepared cationic kraft lignin acrylate, from which a cationic lignin (CKLA) hydrogel was further
prepared by cationic kraft lignin acrylate, acrylamide, and N, N’-methylenebisacrylamide. The morphology, compression properties and swelling properties of CKLA hydrogels were investigated. The prepared CKLA hydrogel
was applied as an adsorbent for Congo red. The effect of CKLA hydrogel dosages, initial concentration of Congo
red, and pH on adsorption efficiency was investigated. The maximum Congo red removal efficiency was obtained
at the initial concentration of Congo red of 50 mg/L, pH 7, and 5 mg dosage of CKLA hydrogel with 20% cationic
lignin content. After five cycles of adsorption, the adsorption efficiency of the hydrogel for Congo red still reached
more than 80%. The CKLA hydrogel showed pseudo-second-order adsorption kinetics for Congo red adsorption.
These results demonstrate the potential of the CKLA hydrogel as an adsorbent for water treatment.},
DOI = {10.32604/jrm.2023.024521}
}