DTPA-Assisted Selective Leaching of Mo, Co, Ni, and Al from Spent Hydrodesulfurization Catalysts

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dc.authorid0000-0002-3132-4468
dc.contributor.authorTurk, Feride N.
dc.contributor.authorArslanoglu, Hasan
dc.date.accessioned2026-02-03T12:02:59Z
dc.date.available2026-02-03T12:02:59Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe extraction of cobalt (Co), nickel (Ni), molybdenum (Mo), and aluminum (Al) from an alumina-supported hydrodesulfurization (HDS) spent catalyst was examined using diethylene triamine pentaacetic acid (DTPA) as a chelating agent. To assess the impact of different metals on leaching efficiency, a roasting pretreatment was performed on powdered catalyst samples at various temperatures (300-700 degrees C) and durations (15-360 min). The morphological and textural modifications before and after roasting were characterized using scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) analysis. The optimal roasting parameters were determined to be 600 degrees C for 180 min, under which the maximum metal extraction efficiencies were obtained: 71.05% for Mo, 80.06% for Co, 73.86% for Ni, and 15.33 % for Al. Leaching experiments were conducted with a particle size range of + 75 to - 30 mu m, a liquid-to-solid ratio of 15 mL/g, a DTPA concentration of 0.2 M, a leaching temperature of 60 degrees C, a duration of 180 min, and a stirring rate of 200 rpm. The findings highlight that both roasting temperature and time play a crucial role in enhancing metal dissolution from the spent catalyst.
dc.description.sponsorshipScientific and Technological Research Council of Turkiye(TUBITAK)
dc.description.sponsorshipCOMU Scientific Research Projects Commission [FHD-2024-4769]
dc.description.sponsorshipOpen access funding provided by the Scientific and Technological Research Council of Turkiye(TUBITAK). This study was supported by the COMU Scientific Research Projects Commission with the project numbered FHD-2024-4769.
dc.identifier.doi10.1007/s11837-025-07477-x
dc.identifier.endpage7033
dc.identifier.issn1047-4838
dc.identifier.issn1543-1851
dc.identifier.issue9
dc.identifier.scopus2-s2.0-105006813055
dc.identifier.scopusqualityQ2
dc.identifier.startpage7022
dc.identifier.urihttps://doi.org/10.1007/s11837-025-07477-x
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34917
dc.identifier.volume77
dc.identifier.wosWOS:001497127700001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJom
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260130
dc.subjectMetal Recovery
dc.subjectHeavy-Metals
dc.subjectMolybdenum
dc.subjectNickel
dc.subjectCobalt
dc.subjectManagement
dc.subjectSoils
dc.titleDTPA-Assisted Selective Leaching of Mo, Co, Ni, and Al from Spent Hydrodesulfurization Catalysts
dc.typeArticle

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