Petrography and geochemistry of exported Colombian coals:Implications from correlation and regression analyses

作     者：Segun A.Akinyemi Ferney Bohorquez Nazrul Islam Binoy K.Saikia Carlos H.Sampaio Tito J.Crissien Luis F.O.Silva 

作者机构：Environmental Remediation&Geopollution GroupDepartment of GeologyFaculty of ScienceEkiti State University Ado EkitiP.M.B.5363Ado EkitiNigeria Department of Civil and Environmental EngineeringUniversidad de La CostaCalle 58#55-66.080002BarranquillaAtlanticoColombia Coal and Energy GroupMaterials Science&Technology DivisionCSIR-North East Institute of Science&TechnologyJorhat785006India Departament D’EnginyeriaMineraIndustrial I TICSerra Húnter ProfUniversitatPolitecnica de Catalunya Barcelona TechAv.Bases de Manresa 61e63Manresa08242BarcelonaSpain 

出 版 物：《Energy Geoscience》 (能源地球科学（英文）)

年 卷 期：2021年第2卷第3期

页      面：201-210页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：Authors express special thanks to Director (CSIR-NEIST) for this collaboration and Dr Jim C. Hower from the Center for Applied Energy Research (CAER) for the University of Kentucky for technical assistance with the petrology analyses 

主　　题：Coal characterisation Geochemistry Mineralogy Coal petrology Colombia 

摘      要：The petrology of coal,as determined by the microscopic analysis of organic and inorganic elemental constituents of coal,provides information on its nature and *** is used worldwide in the production of thermal energy and *** the case of high-quality Colombian coals,only limited studies have been carried *** present study presents the geochemical,mineralogical,and petrological characteristics of coal samples collected from Puerto Drummond in Cienaga,Colombia,to predict their potential ***,the ultimate,proximate,petrographic,gross calorific value(GCV),ash fusion temperature,Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD),X-ray fluorescence(XRF),and Thermogravimetric(TG)analyses were employed in this *** petrological analysis reveals that Colombian coals are naturally more abundant in vitrinite(72%)than inertinite(14e23%)*** and aluminosilicate are the main minerals present as fine particles mixed with *** XRD and FTIR analyses show that the most common and dominant minerals are quartz,while gypsum,hematite,calcite and mica occur in lesser *** oxide composition of the coal ashes consists of 51e58%SiO2 and 18e25%Al2O3 as determined by XRF *** correlation and regression analysis,the moisture content shows a reverse correlation with GCV(Regression value of R2¼0.68).This study helps researchers to comprehend the importance of Colombian coals and presents various techniques for characterisation of coals.