Organic Petrology: An Overview

Suárez-Ruiz, Isabel

doi:10.5772/23431

Cited by 9 publications

(4 citation statements)

References 92 publications

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“…The composition of macerals influences the composition of elements in coal which in turn impacts on the coal reactivity. Vitrinite contains less hydrogen than liptinite but more oxygen while inertinite has high carbon content and lower hydrogen than vitrinite but similar oxygen (Durie 1982;Suarez-Ruiz and Crelling 2008;Suarez-Ruiz 2012). It is the arrangement of these elements in a coal structure that determines the reactivity of different coals.…”

Section: Discussionmentioning

confidence: 99%

“…6). Coals which have passed the evolution phase of diagenesis (a phase when coal significantly loses oxygen as carbon dioxide and water) and reached to the catagenesis stage (when hydrogen and carbon are lost due to oil and gas generation when the organic matter under-goes thermal decomposition as temperature increases with burial in the sedimentary basins) have great potential for generation of hydrocarbons (Tissot and Welte 1984;Suarez-Ruiz and Crelling 2008;Suarez-Ruiz 2012;Singh and Mrityunjay 2018a, b).…”

Section: Degree Of Coalificationmentioning

confidence: 99%

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Influence of coal properties on coal conversion processes-coal carbonization, carbon fiber production, gasification and liquefaction technologies: a review

Keboletse

Ntuli

Oladijo

2021

Int J Coal Sci Technol

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Coal due to its relatively large quantities and wide distribution worldwide has generated renewed interest in research and development with the aim of establishing coal conversion technologies that are technically reliable, environmentally and economically feasible. It has proved to be a prominent energy source in emerging markets with increasing energy demand by accounting for the largest increase in the demand of energy amongst all other energy sources. Furthermore, with its higher mesophase content, coal tar is an appropriate raw material for precursors in the production of carbon fiber. However, whenever a material is put to use, it is important to be able to associate its properties to the behavioral characteristics during a conversion process so as to have a basis for opting for the material in a given process or adjusting the operating conditions in order to optimize the material utilization. Therefore, as with any other material, it is important to be able to relate the properties of coal to its utilization. A review was carried out on the influence of coal properties on four main utilization technologies: gasification, carbonization, liquefaction and carbon fibre production. Among several properties rank, type, mineral matter content, distribution of trace elements, structural composition and pore structure were found to be most influential on the behavior of coal during conversion processes.

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Section: Discussionmentioning

confidence: 99%

Section: Degree Of Coalificationmentioning

confidence: 99%

Influence of coal properties on coal conversion processes-coal carbonization, carbon fiber production, gasification and liquefaction technologies: a review

Keboletse

Ntuli

Oladijo

2021

Int J Coal Sci Technol

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“…Many researchers have provided a thorough study of several geochemical parameters in evaluating the richness, maturity and quality of source rocks, vitrinite reflectance, maceral analysis, total organic content measurement, rock-eval pyrolysis, associations between maturity and hydrocarbon generation, as well as the depositional environment (Dow, 1977;Tissot and Welte, 1978;Thompson-Rizer, 1993;Law, 1999;Vandenbroucke and Largeau, 2007;Gogoi , 2008;Salleh , 2008;Sahoo and Gogoi, 2011;Phukan , 2013;Jahan, 2016;Sharma , 2016;Singh , 2016aSingh , -b, 2017aMathews , 2020;Gogoi , 2020Gogoi , , 2021Singh and Kumar, 2020;Singh , 2022;Kar , 2022). Quantitative and qualitative analyses of different kerogen types with the geochemical study of organic matter provide a better understanding of the generating potential (GP) of source rocks (Thompson and Dimbicki, 1986;Isabel, 2012). The present study is an attempt to identify the assessment of the maturity, type, and et al et al et al et al et al et al et al et al et al et al et al et al quantity of organic matter and interpret the depositional environment based on the maceral and kerogen types of the coals of Chintalapudi Sub-basin (CSB) of the Pranhita-Godavari (PG) Basin.…”

Section: Introductionmentioning

confidence: 99%

Rock-Eval Pyrolysis and Petrographic Characteristics of Coals of Chintalapudi Sub-Basin, Pranhita-Godavari Basin, Southern India: Implication to Depositional Environment

Kiran¹,

Gogoi²

2023

JGSR

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The results of the Rock-Eval pyrolysis and petrological investigation carried out on coal samples from the Chintalapudi sub-basin of the Pranhita- Godavari basin have been discussed to identify the assessment of the maturity, type, and quantity of organic matter and interpret the depositional environment. Petrographically these coals are enriched in vitrinite (40.0%-60.7%) followed by liptinite (7.3%-26.0%) and inertinite (9.3%-24.0%) macerals.TOC concentrations range from 17.54% to 64.97%. S1 ranges from 0.30% to 1.63% and S2 ranges from 11.70% to 138.06% are considered to be good source rocks. The Tmax values of the Chintalapudi sub-basin coals are found to be between 420°C to 428°C, indicating an immature source rock for the production of oil. The coal samples have an average HI of 157 mg HC/g TOC and VRo of 0.30% placing them in the Type III gas kerogen range. HI, and OI values reveal that the samples of organic matter composition mostly follow the evolutionary route of mixed Type II/III kerogens and are contributed by terrestrial plants which is the main source of the organic matter. The GI (1.67-5.95) and TPI (2.75-47.14)values favour the existence of wet moor with moderate to severe floods with short periods of alternateoxic and anoxic moor environments due to the high concentration of vitrinite that allowed for adequate tissue preservation. Keywords: Kerogen, Rock-Eval Pyrolysis, Petrography, Chintalapudi Sub-basin

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“…Organic matter is a ubiquitous constituent in almost all modern sediments and sedimentary rocks. It can be found concentrated, for example in the form of coal, oil, hydrocarbons, or disseminated in the sediments, forming a minor constituent (Suárez-Ruiz, 2012). High organic matter sedimentation in estuaries and other coastal areas give place to methanogenesis and high methane (CH4) concentrations in surface waters (Bange et al, 1994;Rehder et al, 1998;Upstill-Goddard et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Organic Pollution in the Ne Sector of Guanabara Bay (Se, Brazil) / Poluição Orgânica No Setor Ne Da Baía De Guanabara (Se, Brasil)

et al. 2018

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This study characterizes the quantity and quality of organic matter present in surface sediments of the NE sector of Guanabara Bay (SE, Brazil), based on geochemical and statistical analysis. The geochemical analyses included stable isotopes in sedimentary bulk organic matter (orgδ13C), total organic carbon (TOC), total sulfur (TS) and Rock Eval pyrolysis parameters, such as free hydrocarbons (S1), generating source potential (S2), production index (PI), oxygen and hydrogen indices (OI, HI) and the maturation index of organic matter (Tmax). The analyzed data were statistically treated to ﬁnd main factors that are influencing the sedimentary composition. The low activity of the bottom currents favors the deposition of fine-grained sediments, rich in organic matter, in most of the studied area. The organic matter present in the sediments is being supplied by local and allochthonous sources and can be considered a good source of type III kerogen, and therefore has the potential to generate gas, if the geological context is adequate. Considering the quantity, type of organic matter and potential of hydrocarbon generation four main groups of stations were identified. Stations in which the sediments: i) encompass a relatively high component of OM sourced mainly from the adjacent continental areas close to the Apa de Guapimirim (less contaminated by oil) and S. Gonçalo (Roncador River) regions; ii) contain some autochthonous contribution, located between the Paquetá and Governador Islands, where biogenic gas seeping should be predicted hereafter; iii) have higher contamination by oil, situated near Mauá and REDUC Oil Refinery, of Duque de Caxias; iv) present intermediate characteristics, located in the remaining study area. ResumoEste estudo efetua a caracterização da quantidade e qualidade da matéria orgânica presente em sedimentos superficiais do setor NE da Baía de Guanabara (SE, Brasil), com base em análises geoquímicas e estatísticas. Os dados geoquímicos incluíram isótopos estáveis em matéria orgânica (ORGδ13C), carbono orgânico total (TOC), enxofre total (TS) e parâmetros de pirólise Rock Eval, como por exemplo, teores se hidrocarbonetos livres (S1), potencial de geração hidrocarbonetos (S2), índice de produção (PI), índices de oxigênio e hidrogênio (OI, HI) e índice de maturação da matéria orgânica (Tmax). Os dados analisados foram tratados estatisticamente a fim de serem identificados os principais fatores que influenciam a composição sedimentar. A fraca atividade das correntes de fundo, favorece a deposição de sedimentos finos ricos em matéria orgânica, na maior parte da área estudada. A matéria orgânica presente nos sedimentos está sendo fornecida por fontes locais e alóctones e pode ser considerada uma boa a excelente fonte de querogênio do tipo III, tendo, pois, potencial para a geração de gás, desde que o contexto geológico seja adequado. Considerando-se a quantidade, o tipo de matéria orgânica e o potencial de geração de hidrocarbonetos podem ser identificados quatro grupos principais de estações. Estações em que os sedimentos: i) possuem teores relativamente elevados de matéria orgânica oriunda principalmente das áreas continentais, localizadas próximo da Apa de Guapimirim (menos contaminadas por petróleo) e S. Gonçalo (Rio Roncador); ii) contêm alguma contribuição autóctone, situadas entre a Ilha de Paquetá e a Ilha do Governador, onde se poderá prever a ocorrência de libertação de gás biogênico num futuro próximo; iii) possuem maior contaminação por petróleo, localizadas próximo de Mauá e da refinaria Reduc, de Duque de Caxias; iv) apresentam características intermédias, situadas na restante área de estudo.

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Organic Petrology: An Overview

Cited by 9 publications

References 92 publications

Influence of coal properties on coal conversion processes-coal carbonization, carbon fiber production, gasification and liquefaction technologies: a review

Influence of coal properties on coal conversion processes-coal carbonization, carbon fiber production, gasification and liquefaction technologies: a review

Rock-Eval Pyrolysis and Petrographic Characteristics of Coals of Chintalapudi Sub-Basin, Pranhita-Godavari Basin, Southern India: Implication to Depositional Environment

Organic Pollution in the Ne Sector of Guanabara Bay (Se, Brazil) / Poluição Orgânica No Setor Ne Da Baía De Guanabara (Se, Brasil)

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