Removal of dye by carboxymethyl cellulose, acrylamide and graphene oxide via a free radical polymerization process.
Carboxymethyl cellulose has been used for the design of novel engineered hydrogels in order to obtain effective three-dimensional structures for industrial applications. In this work, dye removal carboxymethyl cellulose-acrylamide-graphene oxide (CMC-AM-GO) hydrogels were prepared by a free-radical polymerization method. The GO was developed by the modified Hummers method. The CMC-AM-GO and GO were characterized by FTIR, XRD and SEM. The swelling and swelling kinetics were calculated using gravimetric process. The kinetic parameter, swelling exponent values [n=0.59-0.7507] explained the fact that the CMC-AM-GO hydrogles have super Case II diffusion transport mechanism. CMCx-AM-GO (x=1-4) and CMC-AM hydrogels were used for removal of Acid Blue-133. The result explains that composite hydrogels significantly removed the acid blue when compared to the neat hydrogel. The maximum AB absorption (185.45mg/g) capacity was found in the case of CMC2-AM-GO hydrogel. Therefore, cellulose-based GO hydrogels can be termed as smart systems for the abstraction of dye in water purification applications.
Centro de Investigación de Polímeros Avanzados, CIPA, Avenida Collao 1202, Edificio de Laboratorios, Concepción, Chile. Electronic address: varmaindian@gmail.com.
Kokkarachedu
K
Varaprasad
Center for Nano Cellulose Future Composites, Dept. of Mechanical Engineering, Inha University,100, Inha-Ro, Nam-Ku, Incheon 22212, South Korea; Department of Polymer Technology, Tshwane University of Technology, CSIR Campus, Building 14(D), Private Bag X025, Lynwood 0040, Pretoria, South Africa.
Tippabattini
T
Jayaramudu
Department of Polymer Technology, Tshwane University of Technology, CSIR Campus, Building 14(D), Private Bag X025, Lynwood 0040, Pretoria, South Africa.
Emmanuel Rotimi
ER
Sadiku
Carboxymethyl cellulose; Dye removal; Graphene oxide; Hydrogels