Adsorption of azo dyes onto environmentally friendly bacterial cellulose/kappa-carrageenan hydrogel: Isotherm and kinetic studies

Botleng, Jacinta; Patel, Tejesvi; Lata, Roselyn; Chang, Robert; Rohindra, David

doi:10.1007/s10450-024-00486-3

Adsorption

2024

DOI: 10.1007/s10450-024-00486-3

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Adsorption of azo dyes onto environmentally friendly bacterial cellulose/kappa-carrageenan hydrogel: Isotherm and kinetic studies

Jacinta Botleng,

Tejesvi Patel,

Roselyn Lata

et al.

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2024

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Development of Chitosan Polysaccharide-Based Magnetic Gel for Direct Red 83:1 Removal from Water

Murcia-Salvador,

Rodríguez-López,

Pellicer

et al. 2024

Gels

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Water pollution caused by dyes is a significant environmental issue, necessitating the development of effective, cost-efficient decolorization methods suitable for industrial use. In this study, a Chitosan-Fe polymeric gel was synthesized, characterized, and tested for removing the azo dye Direct Red 83:1 from water. The polymeric magnetic chitosan was analyzed using various techniques: Field Emission Scanning Electron Microscopy (FE-SEM) revealed a porous structure, Differential Scanning Calorimetry (DSC) and Thermal Gravimetric Analysis (TGA) demonstrated the thermal stability, Infrared Spectrophotometry (IR) indicated the successful coordination of iron at the C3 position, and X-ray Powder Diffraction (XRD) confirmed the crystalline nature of the polymeric structure. Optimal conditions for kinetic and isotherm models were found at 1 g and pH 7.0. Adsorption behavior of Direct Red 83:1 onto magnetic chitosan gel beads was studied through kinetic tests and isotherm curves. The maximum adsorption capacity was 17.46 mg/g (qmax). The adsorption process followed pseudo-second-order kinetics (R2 = 0.999) and fit the Temkin isotherm (R2 = 0.946), suggesting heterogeneous surface adsorption. The newly synthesized Chitosan-Fe polymeric gel demonstrated good adsorption properties and facilitated easy separation of purified water.

show abstract

Development of Chitosan Polysaccharide-Based Magnetic Gel for Direct Red 83:1 Removal from Water

Murcia-Salvador,

Rodríguez-López,

Pellicer

et al. 2024

Gels

View full text Add to dashboard Cite

show abstract

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Adsorption of azo dyes onto environmentally friendly bacterial cellulose/kappa-carrageenan hydrogel: Isotherm and kinetic studies

Cited by 1 publication

References 87 publications

Development of Chitosan Polysaccharide-Based Magnetic Gel for Direct Red 83:1 Removal from Water

Development of Chitosan Polysaccharide-Based Magnetic Gel for Direct Red 83:1 Removal from Water

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