Results 11 to 20 of about 529 (96)
DETERMINATION OF VANADIUM IN TURKISH ASPHALTITES [PDF]
, 2010 Vanadium is found in many rocks and minerals, including asphaltite. Asphaltite is one of the naturally occurring black, solid bitumens, which are soluble at heating in carbon disulfide and fuse. Asphaltite is also a solidified hydrocarbon compound derived from petroleum.
Aydin, I. +3 more
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Rheological behavior of asphaltite-modified bituminous binders
, 2013 This work focuses on the rheological properties of asphaltite-modified bituminous binders. The natural asphaltite, employed to modify a petroleum-derived-bitumen, is mined in Albania.
Duchez, Jean-Louis +4 more
core +5 more sources
Geochemistry, Geophysics, Geosystems, Volume 24, Issue 5, May 2023., 2023 Abstract Recent studies have shown that biosignatures of ancient microbial life exist in mineral coatings in deep bedrock fractures of Precambrian cratons, but such surveys have been few and far between. Here, we report results from southwestern Sweden in an area of 1.6–1.5 Ga Paleoproterozoic rocks heavily reworked by the 1.14–0.96 Ga Sveconorwegian ...
Henrik Drake +4 more
wiley +1 more source
Environmental Toxicology and Chemistry, Volume 42, Issue 1, Page 7-18, January 2023., 2023 Abstract In the present study, we investigated the possibility of identifying the source oils of exposed fish using ratios of bicyclic sesquiterpane (bicyclane) chemical biomarkers. In the event of an oil spill, identification of source oil(s) for assessment, or for litigation purposes, typically uses diagnostic ratios of chemical biomarkers to produce
Francis D. Spilsbury +6 more
wiley +1 more source
DESULFURIZATION AND DEMINERALIZATION OF ASPHALTITE BY AQUEOUS CAUSTIC LEACHING [PDF]
Oil Shale, 2007 The method of desulfurization and demineralization by aqueous caustic leaching (ACL) was used for treatment of asphaltite samples front Seguruk collieries of Sirnak asphaltite fields, situated in Southeast Anatolia region of Turkey.
Saydut, A., Duz, M. Z., Hamamci, C.
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Investigation of optimal falcon parameters for clean asphaltite concentrate
, 2023 Asphaltite is a solid fuel formed due to the metamorphism of oil separated from its reserves by tectonic movements. The most critical components that determine solid fuel quality are ash and sulfur.
Aydan Aksoğan Korkmaz +1 more
core +1 more source
Origin and Distribution of Large Asphaltite in South China [PDF]
ACS Omega, 2020 Abstract Large quantities of Triassic solid asphaltite were discovered in the Guangyuan area, northwest Sichuan. The asphaltite is formed in layers with a vertical thickness between 0.3 and 2.8 m and is stably distributed with intrusive contact with surrounding rocks.
Guangyou Zhu +7 more
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Geobiology, Volume 16, Issue 5, Page 556-574, September 2018., 2018 Abstract In the deep biosphere, microbial sulfate reduction (MSR) is exploited for energy. Here, we show that, in fractured continental crystalline bedrock in three areas in Sweden, this process produced sulfide that reacted with iron to form pyrite extremely enriched in 34S relative to 32S.
Henrik Drake +8 more
wiley +1 more source
The Scientific World Journal, Volume 2014, Issue 1, 2014., 2014 The organopores play an important role in determining total volume of hydrocarbons in shale gas reservoir. The Lower Silurian Longmaxi Shale in southeast Chongqing was selected as a case to confirm the contribution of organopores (microscale and nanoscale pores within organic matters in shale) formed by hydrocarbon generation to total volume of ...
Fangwen Chen +3 more
wiley +1 more source
Investigation of the cleanability of asphaltite by flotation
Chemical Physics Letters, 2021 Abstract Southeastern Anatolia Region of Turkey/Sirnak asphaltites centers are located in and around large reserves in coal mines. Due to the high ash and sulfur content of asphaltite coal, it is important to use it by cleaning with enrichment methods, in terms of solving environmental problems and increasing energy quality.
openaire +2 more sources