Sequential application of microwave and conventional heating methods for preparation of activated carbon from biomass and its methylene blue adsorption

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dc.authoridSAKA, Cafer/0000-0003-2534-5921
dc.contributor.authorBaytar, Orhan
dc.contributor.authorSahin, Omer
dc.contributor.authorSaka, Cafer
dc.date.accessioned2024-12-24T19:25:19Z
dc.date.available2024-12-24T19:25:19Z
dc.date.issued2018
dc.departmentSiirt Üniversitesi
dc.description.abstractThe preparation of activated carbon from sunflower seed husk as raw precursor with sequentially application of the both microwave and conventional heating methods assisted ZnCl2 activation was investigated for the first time in the study. The influences of microwave power, microwave treatment time, conventional heating time, and conventional heating temperature and ZnCl2 concentration on the properties of the activated carbon were investigated. Characterization of prepared activated carbons was done by measuring TG/DTG, BET surface area analysis, SEM and FT-IR analysis. The maximum surface area and total pore volume for the prepared activated carbon were 1511 m(2)/g and 0.35 cm(3)/g at a microwave power of 500 W, a microwave treatment time of 30 min, an activation time of 45, an activation temperature of 500 degrees C and the ZnCl2 concentration of 1:1. Some parameters affecting adsorption such as pH, isotherm, kinetic, thermodynamic, and desorption were investigated. In addition, Langmuir and Freundlich adsorption isotherms were employed to determine type of adsorption isotherm. The maximum MB adsorption capacity for the activated carbon obtained by Langmuir adsorption isotherm was 240 mg/g at 30 degrees C. The kinetic analysis was carried out by pseudo-first-order and pseudo-second-order models. The results revealed that the adsorption kinetic is more similar to the pseudo -first-order. The parameters of thermodynamic like Delta H degrees, Delta G degrees and Delta S degrees were calculated.
dc.identifier.doi10.1016/j.applthermaleng.2018.04.039
dc.identifier.endpage551
dc.identifier.issn1359-4311
dc.identifier.scopus2-s2.0-85046167537
dc.identifier.scopusqualityQ1
dc.identifier.startpage542
dc.identifier.urihttps://doi.org/10.1016/j.applthermaleng.2018.04.039
dc.identifier.urihttps://hdl.handle.net/20.500.12604/6354
dc.identifier.volume138
dc.identifier.wosWOS:000438480200049
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofApplied Thermal Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241222
dc.subjectMicrowave
dc.subjectConventional
dc.subjectSunflower seed husk
dc.subjectPyrolysis
dc.subjectActivated carbon
dc.titleSequential application of microwave and conventional heating methods for preparation of activated carbon from biomass and its methylene blue adsorption
dc.typeArticle

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