OOIR: Observatory of International Research

Papers

(The TQCC of Biofuels-UK is 5. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-12-01 to 2025-12-01.)

Article	Citations
Hybrid pathway of bio-ethanol production employing empty fruit bunches co-gasified with charcoal and mixed culture fermentation: Optimization using response surface methodology	56
An investigation of the longevity wear assessment during the utilisation of biofuel-diesel blends in a diesel engine: a case study of crude palm and crude jatropha oil	41
Functionalized iron oxide nanoparticles for covalent immobilization of cellic CTec2 cellulase: enabling enzyme reusability in cellulosic biomass conversion	34
Design and fabrication of smooth periodic constriction reactor to biodiesel production from waste cooking oil	34
Biodiesel production from by extraction of carp fish (Cyprinidae) oil and transesterification using CaO derived from limestone and eggshells as heterogeneous catalysts	30
Monitoring of biodiesel oxidation reaction in the absence and presence of coffee leaves extract as an antioxidant additive	30
High yield production of lipid and carotenoids in a newly isolated Rhodotorula mucilaginosa by adapting process optimization approach	28
Recycling calcium oxide nanoparticles for sustainable biodiesel production from nonedible feedstock Argemone mexicana L.	26
Cell disruption of Chlorella sp. and Ecklonia maxima biomass for bioethanol production using Saccharomyces cerevisiae	22
Comprehensive analysis of formaldehyde and acetaldehyde emissions and performance of a diesel engine using various diesel-vegetable oil and diesel-biodiesel blends	22
Transmission of variations in the biodiesel mandate for Brazilian biodiesel market	22
From fossil fuels to renewables: an analysis of fuel transition in Swedish heavy transport and industry	20
Comparative assessment of pre-treatment techniques and process economics on marine seaweed, Gelidium pusillum, for enhanced bioethanol production	19
Gasifier use for cooking and biochar production by smallholder farmers in Rwanda	18
Exploring the impact of diesel-vegetable oil blends as an alternative fuel in combustion chambers	17
Optimizing biodiesel production from Capparis spinosa oil using supercritical methanol	17
Introducing a promising biomass for bioethanol production: sugary cassava root ( Manihot esculenta Crantz)	16
A bibliometric analysis of studies on diesel engines fuelled with biodiesel and its blends: trends, hotspots, and future research	16
Recent advances in conventional and genetically modified macroalgal biomass as substrates in bioethanol production: a review	16
Performance analysis, techno-economic and life cycle assessment of Jatropha curcas L. (Euphorbiaceae) seedcake gasification and Fischer-Tropsch integrated process for bi	16
PPE kit to bio-oil: an experimental investigation	15
Prospects and limitations of existing biofuels and emerging trends in the utilization of nanoparticles for enhanced biofuel production and microbial fuel cell efficiency	15
Influence of municipal food waste and poultry manure mixing on substrate physicochemical properties and biogas production	14
Pyrolysis of rice-straw and mustard-oil residue blend: evaluation of biochar properties for its sustainable use	14
Saccharification of lignocellulosic biomass using an enzymatic cocktail from marine bacteria	14

Development of an efficient method to blend forest biomass with agricultural residue to produce fuel pellets with improved mechanical properties	14
Evaluation of the structural and crystalline properties of hybrid biochar derived from co-carbonized polyethylene and soybean pod waste	14
Advanced reactor design for biodiesel synthesis: evaluating a smooth periodic constriction reactor with sunflower oil and eggshell-derived CaO	13
Extraction and characterisation of lignin from residues of Mexican Ocote pine ( Pinus montezumae Lamb.) for biofuel production	13
Harnessing optimal light conditions for sustainable microalgal cultivation and biomass enhancement	13
High potential low-cost crude enzymes from Algerian fungal strains for plant polysaccharides hydrolysis	13
Application of phosphoric acid plus hydrogen peroxide pretreatment and Aspergillus species enzymatic decomposition on rice straw for bioethanol production	13
Effect of single and combined pretreatment strategies applied to Chlorella vulgaris biomass on bioethanol production	13
Microwave furfural aldol condensation with acetone to biofuel intermediates over a potassium promoted waste red mud-derived catalyst	12
Long-term productivity of production-scale, high-diversity prairie biomass feedstocks	12
Performance optimization by study of tribological and rheological properties of dates oil with graphene oxide nano-additives	11
Influence of varying aluminum-based combustion compartment sizes on groundnut shell biochar properties	11
Nitrogen-rich, potato peel-derived hydrochar as an effective dye adsorbent	11
Performance assessment of compression ignition engines powered by biogas, biodiesel, and producer gas mix derived from agriculture waste	11
Investigation on chlorella Sp. HS2 microalgae growth using CO ₂ from engine exhaust to study carbon sequestration	11
Production and quality assessment of biodiesel obtained by thermal process from wet microalgae biomass of Choricystis minor var. minor	11
Towards sustainable continuous co-production of biodiesel and ether from wet microalgae- a review	11
Potential use of thermophilic bacteria for second-generation bioethanol production using lignocellulosic feedstocks: a review	11
Effects of divalent cations and electron mediators on acetone–butanol–ethanol (ABE) fermentation of Ficus carica	11
Photocatalytic degradation on Sulphur–Nitrogen Co-Doped Fe ₂ O ₃ surface and enhanced nanostructure design using RERNN-FFO approac	10
Carbon footprint of four bioethanol cropping systems in a temperate region	10
Production of biodiesel from Pistacia atlantica (PA) oil seeds using nano-catalyst of alumina/sludge of stone cutting factory (Al ₂ O	10
Valorization of fish waste for sustainable biofuel production: A case study in Ghana	10
Study of the addition of Gabiroba leaves extract in the biodiesel oxidation reaction in the presence of metal ions	10
Valorization of spent coffee grounds: a multi-solvent extraction approach and blending with waste cooking oil for sustainable biodiesel production	10
Highlighting the relationship between bioethanol fuel and the institutional and macro-environmental environment in developed and developing countries	10
A thermodynamic approach to assess the sustainability of third-generation sunflower waste cooking oil in DICI engine along with exergoeconomic and enviroeconomic perspective	9
Overview of microwave-assisted transesterification technology for biodiesel production with bibliometric indicators	9
Calorific value prediction models of processed refuse derived fuel 3 using ultimate analysis	9
Effects of stably dispersed carbon nanotube additives in yellow oleander methyl ester-diesel blend on the performance, combustion, and emission characteristics of a CI engine	9
Co-digestion strategies of rice straw and molasses for biohythane production: a techno-economic evaluation	9
A critical review on emulsion fuel formulation and its applicability in compression ignition engine	9
Nanoparticles-suspended biodiesel and its blends in compression ignition engines: a bibliometric analysis of research trend and future outlook	9
Nanotechnology for a greener future: sustainable energy and biofuel advances	9
Sustainable biodiesel production from Raphanus sativus seed oil using phytosynthesized copper oxide nanocatalyst	8
Exergy analysis of fusel oil as an alternative fuel additive for spark ignition engines	8
Anisidine value as oxidation stability indicator in FAME	8
State-of-the-art novel catalyst synthesized from waste rice husk and eggshells for cleaner biodiesel production	8
Parametric optimization by Box-Behnken design in the pyrolysis of spent coffee grounds and kinetic study	8
Teak leaf biochar production for sustainable forest waste management at low temperatures	8
A comprehensive assessment of vehicular performance and emission characteristics during real-time test-runs using selected bio-ethanol–gasoline blends	7
Synergistic effects of SWCNT and MgO nanoparticle additives on engine performance and emissions: a laboratory analysis approach	7
Simultaneous computational modelling and experimental validation for Sterculia urens oil extraction for biodiesel application	7
Synthesis and characterisation of a novel silica—CaO/TPA catalyst for biodiesel production	7
Exploring the potential of microalgae cell factories for generation of biofuels	7
Modeling and simulation of an integrated bioethanol-hydrogen production process	7
Compositional study of bio-oil obtained from torrefaction of mixed food waste using H-NMR,¹³C-NMR, DEPT 90 & 135, and GC-MS	7
Greenhouse gas emissions from rapeseed oil ethyl and methyl esters	7
Effect of diesel and pentanol blends on PAH formation and regulated pollutants	6
Biodiesel production from fish oil: a review	6

A combined study of filterability and soaking strength of fuel filter and effect of injection timing on CI engine characteristics using Ceiba pentandra biodiesel	6
Effects of ethyl proxitol (1-ethoxy-2-propanol) additive on combustion and emission characteristics of biodiesel blends	6
The effects of the usage of silicon dioxide (SiO ₂ ) and titanium dioxide (TiO ₂ ) as nano-sized fuel additives on the engine char	6
Enhancing sustainability: co-pyrolysis of date palm branches and wastewater microalgae for tailored biochar production	6
Forest biomass potential for wood pellets production in the United States of America for exportation: a review	6
Growth characteristics and biodiesel properties of fatty acids methyl esters (FAMEs) of Scenedesmus dimorphus (Turpin) Kützing	6
A methodology to formulate technology roadmap and policy package in biofuels	6
A review on biomass pyrolysis and pyrolysis mechanisms	6
Biodiesel production from sunflower oil using a combined atmospheric cold plasma jet-hydrodynamic reactor	6
Evaluation of combustion characteristics and emission reduction potential of fusel oil–gasoline blends in a turbocharged 1.8 L gasoline direct injection (GDI) engine	6
NaCl stress mediated lipid and carotenoid production in freshwater microalga Kirchneriella obesa by optimization of medium composition using response surface methodology	6
Effect of hydrogen induction on CI engine characteristics fuelled with kapok oil methyl ester-turpentine blend with diethyl ether	6
Study of performance, emission characteristics, and parametric optimization of compression ignition engine using biofuels: A review	6
The effects of biodiesel produced from waste cooking oils on vibroacoustic properties of a heavy-duty diesel engine	6
Enhanced biofuel dehydration using MXene-PES nanocomposite membranes via pervaporation	6
Thermo chemical conversion of cedar wood by pyrolysis technology for bio-oil	5
Experimental investigation of elastomer compatibility and engine performance of biodiesel derived from deodorizer distillate	5
The feasibility of renewable energy recovery from municipal solid wastes in Palestine based on different scenarios	5
Comparative study of pretreatment methods for the reverse enzymatic hydrolysis of Chlorella and Spirulina microalgae for bioethanol produc	5
Antioxidative capacity evaluation of imine compounds as metal ions chelators and free radical scavengers in biodiesel	5
The comparative financial feasibility analysis and the environmental impacts of sugarcane-based bioethanol production in South Africa	5
Analyzing the market conditions and long-term dynamics in the biodiesel industry	5
Reductive deoxygenation of diphenolic acid using Ir, Re, Mn and Pd based catalysts for biofuel applications	5
Methanol, isobutanol, kerosene, dimethylfuran, ethanol, and isopropanol additives effects on soot concentration at hydrogen-enriched methane flames	5
Optimization studies on bio-oil yield using microwave-assisted pyrolysis of bio-sludge	5
An in-depth comparative analysis of fuel evolution: tracking physico-chemical characteristics in conventional diesel, e-diesel, biodiesel, and aged biodiesel	5
Experimental evaluation of cottonseed oil-camphor binary blends on diesel engine performance, combustion, exhaust and cyclic variance parameters	5
Influence of graphene oxide nanoparticles dispersed mahua oil biodiesel on diesel engine: performance, combustion, and emission study	5
Tapping the bioenergy potential of milled coffee wastes: a study on the pyrolysis kinetics, response surface methodology, and techno-economic feasibility	5
Urban wood waste blends with Eucalyptus sp. as a flexible alternative source to supply renewable energy systems	5
Economic analysis of the sustainable aviation fuel supply chain from hybrid poplar in the southeast US considering alternative preprocessing technologies	5
Techno economic approach of biogas in Konya Türkiye	5
Physical and frictional behaviors of loblolly pine residues	5
Methane, a renewable biofuel: from organic waste to bioenergy	5
Cultivation of Nannochloropsis oculata in palm oil mill effluent (POME) under different monochromatic light-emitting diode (LED) light wavelengths for biodiesel producti	5