8 hasil untuk "Medet Junussov"

Preliminary XRF Analysis of Coal Ash from Jurassic and Carboniferous Coals at Five Kazakh Mines: Industrial and Environmental Comparisons

Medet Junussov; Sezim Mustapayeva

Applied Sciences, Vol. 14 No. 22 · 2024 · Inggris · DOAJ Scopus

This study analyzes 105 coal ash samples from Jurassic and Carboniferous coals from five mines in Kazakhstan, Lenin, Saradyr, Bogatyr, Maikuben, and Shubarkol, focusing on the inorganic elemental compositions, their occurrence, and industrial and environmental implications. Methods include coal ash…

New insights into pyrite in the Western Mecsek uranium ore deposit: its morphology, invisible gold and trace element composition

Medet Junussov; Rustem Abirov; Gulnur Mekenbek dkk.

Bulletin of the Mineral Research and Exploration, Vol. 179 No. 179 · 2026 · Inggris · DOAJ Scopus

This study presents the occurrence of invisible gold and associated trace elements in pyrite from the Late Permian Kővágószőlős Sandstone Formation within the Western Mecsek uranium ore deposit, Hungary. Eight pyrite-rich drill-core samples were analyzed using optical microscopy, EMPA, LA-ICP-MS…

CO2 storage capacity of coal seams: a screening and geological review of carboniferous coal formations of Kazakhstan

Mohammad Asif; Medet Junussov; Sotirios Longinos dkk.

International Journal of Coal Science & Technology, Vol. 12 No. 1 · 2025 · Inggris · DOAJ Scopus

Abstract The increasing atmospheric CO2 concentration linked to human activity results in global warming by the greenhouse effect. This anthropogenic CO2 may be sequestrated into geological formations, e.g., porous basalts, saline aquifers, depleted oil or gas reservoirs, and unmineable coal seams…

Laboratory Study of Liquid Nitrogen Cryo-Fracturing as an Environmentally Friendly Approach for Coalbed Methane (CBM) Reservoirs

Sotirios Nik. Longinos; Alina Serik; Emil Bayramov dkk.

Energies, Vol. 17 No. 10 · 2024 · Inggris · DOAJ Scopus

This study evaluated two distinct cryo-fracturing techniques using liquid nitrogen (LN2). The evaluation included tests for peak compression strength, acoustic emission, and energy absorption. The experiments compared single-exposure freezing time (FT) and multiple-exposure freezing–thawing cycle…

CO2 utilization and sequestration potential in deep coal seams: A case study on Carboniferous coals from the Karaganda Basin, Kazakhstan

Majid Safaei-Farouji; David Misch; Reinhard F. Sachsenhofer dkk.

Journal of CO2 Utilization, Vol. 101 · 2025 · Inggris · DOAJ

Kazakhstan is a major coal producer and emitter of carbon dioxide (CO2), presenting both a challenge and an opportunity for CO₂ utilization and storage. The main goal of this work is to study the feasibility of CO2 as a feedstock for enhanced coalbed methane recovery (CO2-ECBM), as well as the…

Corrigendum to “CO2 utilization and sequestration potential in deep coal seams: A case study on Carboniferous coals from the Karaganda Basin, Kazakhstan” [J. CO2 Util. 101 (2025) 103204]

Majid Safaei-Farouji; David Misch; Reinhard F. Sachsenhofer dkk.

Journal of CO2 Utilization, Vol. 106 · 2026 · Inggris · DOAJ

Coal Research in the Global Energy Transition: Trends and Transformation (1975–2024)

Medet Junussov; Geroy Zh. Zholtayev; Maxat K. Kembayev dkk.

Energies, Vol. 19 No. 4 · 2026 · Inggris · DOAJ Scopus

Driven by cleaner energy demands, environmental regulations, and technological advances, coal science is rapidly evolving, creating the need to understand its transition and transformation within the global energy research landscape. Building upon earlier national- and topic-specific bibliometric…

Evaluating Coal Quality and Trace Elements of the Karagandy Coal Formation (Kazakhstan): Implications for Resource Utilization and Industry

Medet Junussov; Geroy Zh. Zholtayev; Ahmed H. Moghazi dkk.

Resources, Vol. 15 No. 1 · 2025 · Inggris · DOAJ Scopus

The Carboniferous coal seams in Northeast Kazakhstan remain insufficiently investigated, with a lack of comprehensive mineralogical and geochemical assessments necessary to understand the geological processes controlling coal quality. This study examines 15 coal samples from the Karagandy Coal…