Sorption of dye wastes by poly(vinyl alcohol)/poly(carboxymethyl cellulose) blend grafted through a radiation method

Abstract

The instability in water of poly(vinyl alcohol) (PVA)/poly(carboxymethyl cellulose) (CMC) was improved through radiation‐induced grafting with a styrene monomer. The PVA/CMC blend graft copolymer was used as a sorbent for dye wastes normally released from textile factories. The factors that may affect the sorption process such as time, temperature, weight of the blend graft copolymer, and volume of the dye waste were investigated. The sorption of dyestuffs by the blend graft copolymer was determined by a method based on spectroscopic analysis. The results showed that the blend graft copolymer has a high affinity for basic, acid, and reactive dyes. Meanwhile, it was observed that the sorption of dyes is more effective at the high temperature of 70oC. Moreover, it was found that the sorption of dyes depends on the weight of the blend graft copolymer and does not depend on the volume of the waste solution. The sorption of the dyestuffs by a PVA/CMC graft copolymer may be considered to be a practical method to remove organic pollutants. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 82: 136–142, 2001

Radiation-induced grafting of cellulose for adsorption of hazardous water pollutants: A review

“…Due to these reasons the dye concentration in the discharged water should be controlled. Grafted polymers were also tested in dye removal and grafted cellulose with appropriate functional groups was found to be a good sorbent (El-Hilw, 1999;El-Salmawi et al, 2001;Bouzaida and Rammah, 2002;Sokker et al, 2004;Aly et al, 2005;Hashem et al, 2005;Gupta and Suhas, 2009). When the binding to the grafted material takes place with weak forces, the uptake may be reversible and during solvent regeneration the dye is collected in concentrated solution.…”

“…Poly(vinyl alcohol)/carboxymethyl cellulose blend grafted by styrene in order to strengthen the stability of the blend was also tested for dyes sorption (El-Salmawi et al, 2001). High sorption affinity was found for the collection of basic, acidic and reactive dyes.…”

Radiation induced crosslinking effect on semi - interpenetrating polymer networks of poly(vinyl alcohol)

“…PVA films have high mechanical strength and long-term temperature stability [11]. These properties of PVA have to led their use in several biomedical and industrial applications including contact lenses [12], ophthalmic materials [13], tendon repair [14], as sorbents for dye wastes [15,16], as sensors [17] and drug delivery system [18]. Some chemical hydrogels based on PVA are well known in literature [19].…”

Radiation preparation of PVA/CMC copolymers and their application in removal of dyes

“…Although extensive research work has been carried out on the synthesis and application of polymeric materials in the field of treatment of waste waters, few authors were concerned with PVA/poly(carboxymethyl cellulose) (CMC) polymer blends. It has been reported that the introduction of 6-16% of CMC Na salt to the PVA matrix leads to an increased sorption capacity with respect to water vapor [18].…”