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Sequestration of an azo dye by a potential biosorbent : characterization of biosorbent, adsorption isotherm and adsorption kinetic studies
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dc.contributor.author | Gaur, Bharti | |
dc.contributor.author | Mittal, Jyoti | |
dc.contributor.author | Shah, Syed A. | |
dc.contributor.author | Mittal, Alok | |
dc.contributor.author | Baker, Richard T. | |
dc.date.accessioned | 2024-05-20T14:30:08Z | |
dc.date.available | 2024-05-20T14:30:08Z | |
dc.date.issued | 2024-05-19 | |
dc.identifier | 302248287 | |
dc.identifier | 2643b7be-bc24-4075-ab82-605991972717 | |
dc.identifier | 85194287743 | |
dc.identifier.citation | Gaur , B , Mittal , J , Shah , S A , Mittal , A & Baker , R T 2024 , ' Sequestration of an azo dye by a potential biosorbent : characterization of biosorbent, adsorption isotherm and adsorption kinetic studies ' , Molecules , vol. 29 , no. 10 , 2387 . https://doi.org/10.3390/molecules29102387 | en |
dc.identifier.issn | 1420-3049 | |
dc.identifier.other | RIS: urn:836C80F27DE2C073D53D2F8A3D7E9A26 | |
dc.identifier.other | ORCID: /0000-0002-3304-3280/work/160316613 | |
dc.identifier.uri | https://hdl.handle.net/10023/29907 | |
dc.description | Funding: Ministry of Human Resource Development (Presently Ministry of Education) of the Government of India via the SPARC initiative (project: SPARC/2018-2019/P307/SL). | en |
dc.description.abstract | This study explores the detailed characterization of a biosorbent (Hen Feather) and its efficient use in eradicating the azo dye Metanil Yellow (MY) from its aqueous solutions. Effects of a range of experimental parameters, including pH, initial dye concentration, biosorbent dosage and contact time on the adsorption, were studied. A detailed physical and chemical characterization of the biosorbent was made using SEM, XRD, XPS and FTIR. During the optimization of adsorption parameters, the highest dye uptake of almost 99% was recorded at pH 2, dye concentration 2 × 10−5 M, 0.05 g of biosorbent and a contact period of 75 min. Various adsorption isotherm models were studied to gather different adsorption and thermodynamic parameters. The linearity of the Langmuir, Freundlich and D-R adsorption isotherms indicate homogeneous, multilayer chemisorption with high adsorption affinity between the dye and biosorbent. Values of the changes in the Gibbs free energy (ΔG°) and the enthalpy (ΔH°) of the adsorption process have been calculated, these values indicate that it is a spontaneous and endothermic process. Kinetics of the adsorption were also measured, and it was established that the adsorption of MY over Hen Feather follows a pseudo-second-order kinetic model at temperatures 30, 40 and 50 °C. The findings of this investigation clearly indicate that the studied biosorbent exhibits a high affinity towards the dye (MY), and it can be effectively, economically and efficiently used to sequestrate and eradicate MY from its aqueous solutions. | |
dc.format.extent | 16 | |
dc.format.extent | 8181918 | |
dc.language.iso | eng | |
dc.relation.ispartof | Molecules | en |
dc.subject | Hen feather | en |
dc.subject | Metanil yellow | en |
dc.subject | Adsorption isotherm | en |
dc.subject | Adsorption kinetics | en |
dc.subject | Thermodynamics | en |
dc.subject | QD Chemistry | en |
dc.subject | DAS | en |
dc.subject.lcc | QD | en |
dc.title | Sequestration of an azo dye by a potential biosorbent : characterization of biosorbent, adsorption isotherm and adsorption kinetic studies | en |
dc.type | Journal article | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.contributor.institution | University of St Andrews. Centre for Energy Ethics | en |
dc.contributor.institution | University of St Andrews. St Andrews Sustainability Institute | en |
dc.contributor.institution | University of St Andrews. EaSTCHEM | en |
dc.identifier.doi | 10.3390/molecules29102387 | |
dc.description.status | Peer reviewed | en |
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