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dc.creatorLi, Zichao
dc.creatorHanafy, Hassan
dc.creatorZhanga, Lei
dc.creatorSellaouid, Lotfi
dc.creatorSchadeck Netto, Matias
dc.creatorSilva Oliveira, Marcos Leandro
dc.creatorSeliem, Moaaz K.
dc.creatorDotto, Guilherme Luiz
dc.creatorBonilla-Petriciolet, Adrian
dc.creatorLia, Qun
dc.date.accessioned2020-02-03T13:21:22Z
dc.date.available2020-02-03T13:21:22Z
dc.date.issued2020-01-28
dc.identifier.urihttp://hdl.handle.net/11323/5971
dc.description.abstractActivated carbons were prepared from ashitaba waste and a walnut shell to study the adsorption mechanism of congo red and methylene blue dyes in aqueous solution. These adsorbents were characterized via XRD, FTIR and SEM techniques and the dye adsorption isotherms at three temperatures were quantified. A statistical physics model was applied to interpret the adsorption mechanism of tested dyes and adsorbents. Modeling results showed that these dyes were practically separated in the solution leading to an absence of the aggregation process. Adsorption orientations of dye molecules on the adsorbents changed depending on the temperature and nature of systems. The adsorption capacity of ashitaba waste activated carbon for the removal of congo red was significant thus indicating strong interactions between this dye and tested adsorbent. Calculated adsorption energy varied from 7.25 to 20.43 kJ/mol and they showed that the adsorption of both adsorbates occurred via physical interactions at different temperatures where the removal process was endothermic.spa
dc.language.isoengspa
dc.publisherUniversidad de la Costaspa
dc.rightsCC0 1.0 Universal*
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/*
dc.subjectAshitaba wastespa
dc.subjectWalnut Shellspa
dc.subjectMethylene bluespa
dc.subjectCongo redspa
dc.subjectPhysical modelingspa
dc.subjectActivated carbonspa
dc.titleAdsorption of congo red and methylene blue dyes on an ashitaba waste and a walnut shell-based activated carbon from aqueous solutions: Experiments, characterization and physical interpretationsspa
dc.typePreprintspa
dc.type.hasVersioninfo:eu-repo/semantics/draftspa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa


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CC0 1.0 Universal
Except where otherwise noted, this item's license is described as CC0 1.0 Universal