Removal of reseda luteola dyes in dyeing wastewater by metal-organic framework adsorbent

Articles in Press

Document Type : Original Article

Authors

1 Department of Organic Colorants, Institute for Color Science and Technology, Tehran, Iran

2 Department of Chemical and Biochemical Engineering, University of Western Ontario (UWO), London, Ontario, Canada.

3 - Department of Organic Colorants, Institute for Color Science and Technology,, Tehran, Iran

4 Department of Inorganic Glaze and Pigments, Institute for Color Science and Technology, Tehran, Iran

5 Department of Environmental Research, Dyes and Pigments Center, Institute for Color Science and Technology, Tehran, Iran

6 Tehran University of art, Department of carpet, Tehran, Iran

Abstract

The available dyes in the Reseda luteola are widely used in dyeing textile fibers, especially hand-made carpets. In the dyeing of cellulose and protein fibers, a significant amount of these dyes remain in the dyeing effluent, which causes environmental pollution. In this research, the synthesis and characterization of a metal-organic framework (MOF) containing an amino group has been investigated in order to remove the dyes present in the dyeing effluent. Dye removal conditions have been optimized by single-parameter method and the effect of effective factors such as the initial concentration of the dye, amount of adsorbent and pH have been investigated. The results show that the synthesized MOF can remove the highest amount of dye in a solution with an initial concentration of 240 mg/l at pH 5, time 120 minutes, ambient temperature, and amount of adsorbent 0.07 g. Also, the kinetic data and adsorption isotherm show that the rate of dye removal follows intraparticle diffusion and Freundlich isotherm. The adsorption process is exothermic and is a physical adsorption process.

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Journal of Color Science and Technology

Articles in Press, Accepted Manuscript
Available Online from 27 April 2024

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