Journal ArticleDOI
Dye adsorption and desorption properties of Mentha pulegium in single and binary systems
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TLDR
In this article, the effects of biosorbent dosage, contact time, dye concentration, salt, and pH on dye removal were studied, and the thermodynamic data showed that the biosorption process is spontaneous, endothermic, and a physisorption reaction.Abstract:
This article deals with the dye adsorption and desorption properties of Mentha pulegium (MP) from single and binary (mixture of dyes) systems. Direct Red 80 (DR80) and Acid Black 26 (AB26) were used as model dyes. The Fourier transform infrared (FTIR) was used to investigate the biosorbent characteristics. The effects of biosorbent dosage, contact time, dye concentration, salt, and pH on dye removal were studied. The biosorption isotherms, kinetics, and thermodynamic were studied. In addition, dye desorption was carried out to study adsorbent recovery. The results showed that the isotherm data of single and binary systems of dyes followed the Langmuir isotherm. The adsorption kinetic of the dyes was found to conform to a pseudosecond order kinetic model. Desorption tests showed maximum dye releasing of 97% for DR80 and 95% for AB26 in single system and 92% for DR80 and 94% for AB26 in binary system of dyes at pH 12. The thermodynamic data showed that the biosorption process is spontaneous, endothermic, and a physisorption reaction. It can be concluded that MP is an ecofriendly biosorbent to remove dyes from single and binary systems. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011read more
Citations
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Desorption of Methylene blue dye from brown macroalga: Effects of operating parameters, isotherm study and kinetic modeling
Ehsan Daneshvar,Ehsan Daneshvar,Arya Vazirzadeh,Ali Niazi,Masoud Kousha,Mu. Naushad,Amit Bhatnagar +6 more
TL;DR: In this paper, the effect of various operating parameters, such as eluents, eluent concentrations, dye saturated alga weight, different HCl:1-butanol ratios, different particle sizes, different alga mass washing modes, initial dye concentration in the sorption experiment and contact time on the desorption efficiency of MB dye from brown macroalga, Nizamuddinia zanardinii was investigated.
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Adsorption of hexavalent chromium by metal organic frameworks from aqueous solution
TL;DR: In this article, a metal-organic framework based on copper-benzenetricarboxylates was applied to the adsorption of hexavalent chromium from aqueous solution.
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Metal adsorption by agricultural biosorbents: Adsorption isotherm, kinetic and biosorbents chemical structures
TL;DR: The obtained results showed that the tested biosorbents are efficient and alternate low-cost biosorbent for removal of heavy metal ions from aqueous media.
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Ultrafast Dye Removal Using Ionic Liquid–Graphene Oxide Sponge
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Dendrimer–titania nanocomposite: synthesis and dye-removal capacity
TL;DR: In this article, the dye-removal capacity of DTN was investigated for direct blue 78 (DB78) and direct red 80 (DR80) and the effects of pH and amount of adsorbent on dye removal were determined, and the isotherm, kinetics, and thermodynamics were studied.
References
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Pseudo-second order model for sorption processes
Yuh-Shan Ho,Gordon McKay +1 more
TL;DR: In this paper, a literature review of the use of sorbents and biosorbents to treat polluted aqueous effluents containing dyes:organics or metal ions has been conducted.
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Citation review of Lagergren kinetic rate equation on adsorption reactions
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Removal of Congo Red from water by adsorption onto activated carbon prepared from coir pith, an agricultural solid waste
Chinnaiya Namasivayam,D. Kavitha +1 more
TL;DR: In this paper, the adsorption of Congo Red by coir pith carbon was carried out by varying the parameters such as agitation time, dye concentration, adsorbent dose, pH and temperature.