EFFECTS OF TREATMENTS ON THE MINERAL MATTER AND ACIDIC FUNCTIONAL-GROUP CONTENTS OF TURKISH LIGNITES

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dc.contributor.authorONAL, Y
dc.contributor.authorCEYLAN, K
dc.date.accessioned2024-08-04T20:11:50Z
dc.date.available2024-08-04T20:11:50Z
dc.date.issued1995
dc.departmentİnönü Üniversitesien_US
dc.description.abstractSix Turkish lignites were treated with solutions of HCl or EtONa at ambient temperature or at 150 degrees C. The proximate analysis, forms of sulfur, acidic functional groups and calcium contents of the raw and treated lignites were determined. The solutions after treatment were analysed for calcium. The effects of the treatment on certain structural components of the lignites varied from one lignitie to another. HCl treatment was effective in ash reduction and in the transformation of carboxylate species to carboxylic acids, but not in desulfurization. The ash reduction was accompanied by an increase in combustible sulfur. EtONa treatment was effective in desulfurization but not in ash reduction or in the removal of chelate- or salt-forming cations. The results suggested that this treatment promoted selective cleavage of certain chemical bonds, such as ester, ether or carbon-sulfur bonds, resulting in an increase in acidic functional groups of the lignites, desulfurization and partial dissolution FT-i.r. spectroscopy and X-ray diffractometry provided some additional evidence regarding the changes in lignite structure due to the treatments.en_US
dc.identifier.doi10.1016/0016-2361(95)00055-A
dc.identifier.endpage977en_US
dc.identifier.issn0016-2361
dc.identifier.issue7en_US
dc.identifier.scopus2-s2.0-0029341232en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage972en_US
dc.identifier.urihttps://doi.org/10.1016/0016-2361(95)00055-A
dc.identifier.urihttps://hdl.handle.net/11616/93017
dc.identifier.volume74en_US
dc.identifier.wosWOS:A1995RF97000004en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherButterworth-Heinemann Ltden_US
dc.relation.ispartofFuelen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectLIGNITEen_US
dc.subjectPRETREATMENTen_US
dc.subjectFUNCTIONAL GROUPSen_US
dc.titleEFFECTS OF TREATMENTS ON THE MINERAL MATTER AND ACIDIC FUNCTIONAL-GROUP CONTENTS OF TURKISH LIGNITESen_US
dc.typeArticleen_US

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