Hydrothermal gasification of a biodiesel by-product crude glycerol in the presence of phosphate based catalysts

Basit Öğe Kaydı
dc.contributor.authorCengiz, Nihal Uremek
dc.contributor.authorYildiz, Guray
dc.contributor.authorSert, Murat
dc.contributor.authorGokkaya, Dilek Selvi
dc.contributor.authorSaglam, Mehmet
dc.contributor.authorYuksel, Mithat
dc.contributor.authorBallice, Levent
dc.date.accessioned2019-10-27T22:59:16Z
dc.date.available2019-10-27T22:59:16Z
dc.date.issued2015
dc.departmentEge Üniversitesien_US
dc.description.abstractEnergy from biomass can be provided in various ways, such as burning the solid wastes, production of biogas (by anaerobic digesters), biofuels (i.e. methanol, ethanol, biodiesel, and derivatives), and methane via the utilization of landfills. Biodiesel is a widely used biofuel produced by the conversion of first-generation biomass feedstock via bio-chemical conversion platforms. Crude glycerol is the by-product of biodiesel production being 10 wt.% of the produced biodiesel. The objective of this study is to utilize this glycerol fraction by converting it to fuel gas or to chemical feedstock. In this study, the concentration of glycerol feedstock solution and the catalyst concentration were 50 g/L and 5 g/L, respectively. Crude glycerol was gasified in a sub and supercritical water medium by using a batch autoclave with an inner volume of 100 ml. A temperature range from 300 to 600 degrees C was studied. Experiments were performed with pure and crude glycerol samples in the absence and the presence of homogeneous acidic and alkali catalysts, namely H3PO4, KH2PO4, K2HPO4, and K3PO4. These were used to obtain higher gasification efficiencies and hydrogen and/or methane yields. Subsequent to each experiment liquid, solid, and gaseous products were collected and analyzed by GC, TCA (total carbon analyzer), HPLC, and GC/MS. The order of the effectiveness of the catalysts on gasification was found as: K3PO4 > K2HPO4 > H3PO4 > KH2PO4 for crude glycerol and K3PO4 > K2HPO4 > KH2PO4 > H3PO4 for pure glycerol. K2HPO4 and K3PO4 were found to be more effective in terms of hydrogen production while H3PO4 and KH2PO4 showed the best performance for the maximized methane production. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [107M480]en_US
dc.description.sponsorshipThe financial support of The Scientific and Technological Research Council of Turkey (TUBITAK) (Project No: 107M480) is gratefully acknowledged. We also thank Mr. G. Serin for his support during the experimental studies.en_US
dc.identifier.doi10.1016/j.ijhydene.2015.08.097
dc.identifier.endpage14815en_US
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.issn0360-3199en_US
dc.identifier.issn1879-3487en_US
dc.identifier.issue43en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage14806en_US
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2015.08.097
dc.identifier.urihttps://hdl.handle.net/11454/51758
dc.identifier.volume40en_US
dc.identifier.wosWOS:000364256500005en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofInternational Journal of Hydrogen Energyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBy-product glycerolen_US
dc.subjectHydrogenen_US
dc.subjectMethaneen_US
dc.subjectSupercritical water gasificationen_US
dc.titleHydrothermal gasification of a biodiesel by-product crude glycerol in the presence of phosphate based catalystsen_US
dc.typeArticleen_US

Dosyalar

Koleksiyon

WoS İndeksli Yayınlar Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu