2026 December - 20 articles
Hydrotreated vegetable oil (HVO) offers a renewable paraffinic alternative to conventional diesel, but its implementation requires assessment of fuel performance, component compatibility, and lubricant condition. This study combined laboratory invest...
Underground hydrogen storage in depleted gas reservoirs is a leading option for seasonal balancing of renewable generation, yet the classical material balance and radial diffusivity equations were derived for hydrocarbon gases and misrepresent hydrog...
Methane diffusivity controls matrix-to-cleat gas transfer in coalbed methane reservoirs and varies with pore structure, pressure, and water saturation. A three-dimensional pore–throat network combines steady-state Fickian transport with invasio...
The production of high-quality biodiesel from vegetable oils requires an integrated approach that considers feedstock quality, transesterification, and final product purification. This study investigates a comprehensive technological sequence for soy...
To evaluate how field-applied imbibition agents affect oil recovery and pore-scale oil mobilization in Chang 8 tight sandstone, natural cores from Longdong, Ordos Basin, were tested using CNI-A, CQH-1, and EOS-3. Surface tension, oil–water inte...
Well-trajectory optimization is frequently framed as maximizing reservoir contact, although additional contact does not necessarily enlarge the dynamically connected drainage volume. Here, vertical, J-shaped and horizontal trajectories were evaluated...
Spray quality directly determines the mixture formation and therefore combustion and emissions in diesel direct-injection engines. Biodiesel obtained from palm oil is a viable replacement for mineral diesel, which is renewable. However, due to its hi...
The paper investigates the effect of ultrasonic cavitation, in combination with catalysts, on the fractional composition of high-viscosity oil. Ultrasonic treatment was carried out at a frequency of 22 kHz and a power of 50 W for 10 min in the presen...
To address limited permeability enhancement caused by insufficient free faces during static fracturing in low-permeability coal seams, this study investigated the No. 2 coal seam of the 32203 working face in Hanzui Coal Mine. A coupled stress–d...
The article treats the pelletization process as a waste biomass processing process, which allows for minimizing waste and processing it into biofuel. One of the products of the anaerobic fermentation process in agricultural biogas plants is post-ferm...
Oil transmission pipeline failures may cause severe ecological pollution, casualties, and economic losses, making pipeline corrosion safety management crucial. Existing corrosion evaluation models rely on generalized theories and rarely adopt field-m...
Bulk density (BD) is a key quality parameter of wood pellets, influencing handling, storage and volumetric energy density. The standard procedure (ISO 17828) is accurate but time-consuming and subject to operator variability. This preliminary study i...
The use of steam-based thermal recovery techniques in heavy oil exploitation faces critical limitations in deep formations, aquifer-bearing reservoirs, and formations with high clay content. This has motivated increasing research interest in the use...
Background: The decarbonization of non-electrified rail transport requires alternative fuel solutions capable of reducing diesel-fuel consumption while maintaining the operational capabilities of existing propulsion systems. Dual-fuel operation on li...
Renewable-fuel systems couple variable energy resources with electrolysis, gasification, fuel synthesis, storage, fuel cells, and heat recovery. Their optimization involves nonlinear and nonconvex models, physical constraints, and uncertain operating...
While biodiesel blends offer renewable alternatives to conventional diesel, mitigating their nitrogen oxide (NOx) penalties and optimizing combustion typically requires synthetic or metallic additives. This study introduces SulfoChar, a sulfonated wa...
Reduced air density at altitude challenges spark-ignition combustion in light-duty vehicles, particularly in Andean countries where fleets operate between sea level and over 4000 m a.s.l. We quantified the effect of altitude on gasoline combustion ef...
Low-speed diesel engines are the most widespread in marine power plants. Their fuel efficiency falls with growing intake and charge air temperatures. Therefore, cyclic air cooling ensures sustainable performance of ship engines along the voyage with...
CO2-lean pyrolysis streams from processing industrial or municipal by-products, such as sewage sludge, were tested for catalytic methanation in a bench-scale laboratory plant over a temperature range of 300–450 °C and atmospheric pressure....
Accurate prediction of particulate matter (PM) emissions from gasoline direct injection (GDI) engines requires investigating soot formation mechanisms under conditions that decouple physical mixing from chemical kinetics. In this study, a quasi-one-d...
