Open AccessPreparation of hydrogel reinforced with bentonite by gamma irradiation for metal absorption
Author(s) -
Tran To Uyen,
Trịnh Thị Tú Anh,
Tamikazu Kume,
Cao Đông Vũ,
Nguyễn Minh Hiệp,
Le Xuan Cuong,
Nguyen Ngoc Hoan
Publication year - 2020
Publication title -
nuclear science and technology
Language(s) - English
Resource type - Journals
ISSN - 1810-5408
DOI - 10.53747/jnst.v10i4.15
Subject(s) - bentonite , carboxymethyl cellulose , adsorption , sorption , self healing hydrogels , langmuir adsorption model , nuclear chemistry , absorption (acoustics) , metal ions in aqueous solution , metal , sodium carboxymethylcellulose , cellulose , chemistry , materials science , chemical engineering , sodium , polymer chemistry , composite material , organic chemistry , engineering
A natural-based sodium carboxymethyl cellulose (CMC) hydrogel reinforced with bentonite was prepared by using gamma irradiation technology. This is a novel hydrogel that uses natural polymer to absorb metal ions in wastewater. The influence of dose, concentration of CMC and bentonite on the sorption of hydrogels was investigated by atomic absorption spectrometry (AAS) method. According to the Langmuir isotherm model, the maximum adsorption capacities of CMC/bentonite hydrogel for Cu2+ and Pb2+ were 181.82 mg/g and 204.08 mg/g at room temperature, respectively. The pseudo-second-order model which describes the adsorption process of Cu2+ and Pb2+ was also studied