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 2022-01-01 to 2026-01-01.)

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	58
Functionalized iron oxide nanoparticles for covalent immobilization of cellic CTec2 cellulase: enabling enzyme reusability in cellulosic biomass conversion	43
Monitoring of biodiesel oxidation reaction in the absence and presence of coffee leaves extract as an antioxidant additive	35
Design and fabrication of smooth periodic constriction reactor to biodiesel production from waste cooking oil	34
High yield production of lipid and carotenoids in a newly isolated Rhodotorula mucilaginosa by adapting process optimization approach	32
Cell disruption of Chlorella sp. and Ecklonia maxima biomass for bioethanol production using Saccharomyces cerevisiae	30
Recycling calcium oxide nanoparticles for sustainable biodiesel production from nonedible feedstock Argemone mexicana L.	28
Transmission of variations in the biodiesel mandate for Brazilian biodiesel market	27
Biodiesel production from by extraction of carp fish (Cyprinidae) oil and transesterification using CaO derived from limestone and eggshells as heterogeneous catalysts	24
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	23
From fossil fuels to renewables: an analysis of fuel transition in Swedish heavy transport and industry	22
Comprehensive analysis of formaldehyde and acetaldehyde emissions and performance of a diesel engine using various diesel-vegetable oil and diesel-biodiesel blends	22
Comparative assessment of pre-treatment techniques and process economics on marine seaweed, Gelidium pusillum, for enhanced bioethanol production	20
Gasifier use for cooking and biochar production by smallholder farmers in Rwanda	19
Optimizing biodiesel production from Capparis spinosa oil using supercritical methanol	18
Recent advances in conventional and genetically modified macroalgal biomass as substrates in bioethanol production: a review	18
PPE kit to bio-oil: an experimental investigation	18
A bibliometric analysis of studies on diesel engines fuelled with biodiesel and its blends: trends, hotspots, and future research	17
Introducing a promising biomass for bioethanol production: sugary cassava root ( Manihot esculenta Crantz)	17
Performance analysis, techno-economic and life cycle assessment of Jatropha curcas L. (Euphorbiaceae) seedcake gasification and Fischer-Tropsch integrated process for bi	16
Exploring the impact of diesel-vegetable oil blends as an alternative fuel in combustion chambers	16
Saccharification of lignocellulosic biomass using an enzymatic cocktail from marine bacteria	16
Prospects and limitations of existing biofuels and emerging trends in the utilization of nanoparticles for enhanced biofuel production and microbial fuel cell efficiency	16
Pyrolysis of rice-straw and mustard-oil residue blend: evaluation of biochar properties for its sustainable use	15
Development of an efficient method to blend forest biomass with agricultural residue to produce fuel pellets with improved mechanical properties	15

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

Effects of ethyl proxitol (1-ethoxy-2-propanol) additive on combustion and emission characteristics of biodiesel blends	7
Simultaneous computational modelling and experimental validation for Sterculia urens oil extraction for biodiesel application	7
Forest biomass potential for wood pellets production in the United States of America for exportation: a review	7
NaCl stress mediated lipid and carotenoid production in freshwater microalga Kirchneriella obesa by optimization of medium composition using response surface methodology	7
Greenhouse gas emissions from rapeseed oil ethyl and methyl esters	7
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
Optimization studies on bio-oil yield using microwave-assisted pyrolysis of bio-sludge	6
Effect of hydrogen induction on CI engine characteristics fuelled with kapok oil methyl ester-turpentine blend with diethyl ether	6
Enhanced biofuel dehydration using MXene-PES nanocomposite membranes via pervaporation	6
Comparative study of pretreatment methods for the reverse enzymatic hydrolysis of Chlorella and Spirulina microalgae for bioethanol produc	6
Enhancing sustainability: co-pyrolysis of date palm branches and wastewater microalgae for tailored biochar production	6
Study of performance, emission characteristics, and parametric optimization of compression ignition engine using biofuels: A review	6
A methodology to formulate technology roadmap and policy package in biofuels	6
The effects of biodiesel produced from waste cooking oils on vibroacoustic properties of a heavy-duty diesel engine	6
A review on biomass pyrolysis and pyrolysis mechanisms	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
Biodiesel production from sunflower oil using a combined atmospheric cold plasma jet-hydrodynamic reactor	5
Analyzing the market conditions and long-term dynamics in the biodiesel industry	5
Impact of color of light and nitrogen concentration on Pavlova sp. biomass, cells size and biochemical composition	5
Combination of oscillatory and hydrodynamic system for biodiesel production from sunflower oil	5
Antioxidative capacity evaluation of imine compounds as metal ions chelators and free radical scavengers in biodiesel	5
Design and construction of a single orifice oscillatory flow reactor for the continuous production of biodiesel from sunflower oil	5
The comparative financial feasibility analysis and the environmental impacts of sugarcane-based bioethanol production in South Africa	5
Experimental investigation of elastomer compatibility and engine performance of biodiesel derived from deodorizer distillate	5
Thermo chemical conversion of cedar wood by pyrolysis technology for bio-oil	5
Urban wood waste blends with Eucalyptus sp. as a flexible alternative source to supply renewable energy systems	5
Cultivation of Nannochloropsis oculata in palm oil mill effluent (POME) under different monochromatic light-emitting diode (LED) light wavelengths for biodiesel producti	5
Watermelon (Citrullus vulgaris) seed oil as a potential feedstock for biodiesel production in Nigeria	5
Biogas efficiency, yield and metal profiling of cattail ( Typha latifolia ) biomass in pilot-scale anaerobic digestion	5
Techno economic approach of biogas in Konya Türkiye	5
Tapping the bioenergy potential of milled coffee wastes: a study on the pyrolysis kinetics, response surface methodology, and techno-economic feasibility	5
An in-depth comparative analysis of fuel evolution: tracking physico-chemical characteristics in conventional diesel, e-diesel, biodiesel, and aged biodiesel	5
The feasibility of renewable energy recovery from municipal solid wastes in Palestine based on different scenarios	5
Experimental evaluation of cottonseed oil-camphor binary blends on diesel engine performance, combustion, exhaust and cyclic variance parameters	5
Pyrolysis of coffee residues, tobacco, and algae biomasses as a source of nitrogen-containing compounds	5
Application of principal component analysis (PCA) to the study of the influence of the thermochemical treatment process of tropical wood sawdust on the calorific, mechanical, physicochemical and combu	5
Physical and frictional behaviors of loblolly pine residues	5
Influence of graphene oxide nanoparticles dispersed mahua oil biodiesel on diesel engine: performance, combustion, and emission study	5
Methanol, isobutanol, kerosene, dimethylfuran, ethanol, and isopropanol additives effects on soot concentration at hydrogen-enriched methane flames	5
Economic analysis of the sustainable aviation fuel supply chain from hybrid poplar in the southeast US considering alternative preprocessing technologies	5
Reductive deoxygenation of diphenolic acid using Ir, Re, Mn and Pd based catalysts for biofuel applications	5