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- Title
Poly(methyl methacrylate-ethylene glycol dimethacrylate) copolymer for adsorptive removal of erythrosine dye from aqueous solution.
- Authors
Altındağ, İrem Günay; Dinçer, Ayşe; Becerik, Seda; Eser, Ahmet; Aydemir, Tülin
- Abstract
The preparation and characterization of poly(methyl methacrylate-ethylene glycol dimethacrylate), (poly(MMA-EGDMA)) polymer for erythrosine adsorption has been investigated. Erythrosine is a synthetic red dye used to color food. Water-soluble acid dyes have caused serious water pollution. Poly(MMA-EGDMA) polymer showed better adsorption performance for erythrosine at acidic region and at 30°C. The adsorption process had also been verified by Langmuir and Freundlich adsorption isotherms at 30, 40, and 50°C. Free energy of adsorption (∆G°), enthalpy (∆H°), and entropy (∆S°) changes were calculated to predict the nature of adsorption. The estimated value for ∆G°was calculated as −125.6 kJ/mol at 303 K (30°C). The estimated value for ∆H°was found as −60.69 kJ/mol at 303 K. The negative value for ∆H°indicated that the adsorption of erythrosine on poly(MMA-EGDMA) polymer was an exothermic process.
- Subjects
COLOR removal (Sewage purification); POLYMETHYLMETHACRYLATE; POLYMETHYLENE; ETHYLENE glycol; COPOLYMERS
- Publication
Desalination & Water Treatment, 2015, Vol 54, Issue 6, p1717
- ISSN
1944-3994
- Publication type
Article
- DOI
10.1080/19443994.2014.888015