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dc.contributor.authorMittal, Jyoti
dc.contributor.authorMariyam, Asna
dc.contributor.authorSakina, Farzeen
dc.contributor.authorBaker, Richard T.
dc.contributor.authorSharma, Ashok K.
dc.contributor.authorMittal, Alok
dc.identifier.citationMittal , J , Mariyam , A , Sakina , F , Baker , R T , Sharma , A K & Mittal , A 2021 , ' Batch and bulk adsorptive removal of anionic dye using metal/halide-free ordered mesoporous carbon as adsorbent ' , Journal of Cleaner Production , vol. 321 , 129060 .
dc.identifier.otherPURE: 275967537
dc.identifier.otherPURE UUID: aa8fa9a9-efd4-4ad3-a12a-c62cf0d96181
dc.identifier.otherRIS: urn:E09B0CA0204EE73B3C32140EDDD97C4A
dc.identifier.otherORCID: /0000-0002-3304-3280/work/100549636
dc.identifier.otherScopus: 85115032378
dc.identifier.otherWOS: 000705777200104
dc.descriptionThe authors are grateful to the Ministry of Human Resource Development of the Government of India for financial support through the SPARC Project- SPARC/2018–2019/P307/SL. One of the authors (Asna Mariyam) is also grateful to MANIT, Bhopal for providing fellowship assistance. We thank the University of St Andrews for a PhD scholarship for FS. We acknowledge EPSRC Strategic Resources Grant (EP/R023751/1).en
dc.description.abstractThe present report is an outcome of investigations to assess the adsorptive potential of a synthesized metal- and halide-free variant of ordered mesoporous carbon (OMC) towards an anionic azo dye, Methyl Orange. The results of preliminary studies, carried out in batch mode, helped in setting up the process variables to achieve optimum adsorption conditions. The experimental data were then fitted to Langmuir, Freundlich, Temkin, and Dubinin-Radushkevitch isotherm models. The equilibrium data fitted well to the Langmuir model at 303 K and the monolayer adsorption capacity was 0.33 mmol g−1. The adsorption kinetics were explored by fitting the data to pseudo-first-order and pseudo-second-order kinetic models. The latter described the kinetics well, as indicated by higher regression coefficients. To elucidate the mechanism of mass transfer, various well-known mathematical models were employed. The adsorption of the dye was found to involve particle diffusion. Thermodynamic studies revealed that the adsorptive uptake of Methyl Orange by the OMC was spontaneous (ΔG0 = −23.71 kJ mol−1) and exergonic (ΔH0 = −123.15 kJ mol−1). Finally, the bulk removal of the anionic dye was investigated through column operations followed by column regeneration (desorption) studies. Column saturation of up to 96.55% could be realized. Values for dye recovery reached up to 93.26%. The column efficiency was then evaluated by carrying out three consecutive adsorption/desorption cycles. The results obtained indicated that the adsorbent has a good ability to eliminate Methyl Orange from wastewater, both in batch and column operations.
dc.relation.ispartofJournal of Cleaner Productionen
dc.rightsCopyright © 2021 Elsevier Ltd. All rights reserved. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectMethyl orangeen
dc.subjectWastewater treatmenten
dc.subjectQD Chemistryen
dc.titleBatch and bulk adsorptive removal of anionic dye using metal/halide-free ordered mesoporous carbon as adsorbenten
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. Centre for Energy Ethicsen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.description.statusPeer revieweden

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