OOIR: Observatory of International Research

Papers

(The TQCC of Biofuels-UK is 4. 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 2021-05-01 to 2025-05-01.)

Article	Citations
Transmission of variations in the biodiesel mandate for Brazilian biodiesel market	39
Hybrid pathway of bio-ethanol production employing empty fruit bunches co-gasified with charcoal and mixed culture fermentation: Optimization using response surface methodology	35
High yield production of lipid and carotenoids in a newly isolated Rhodotorula mucilaginosa by adapting process optimization approach	27
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
Cell disruption of Chlorella sp. and Ecklonia maxima biomass for bioethanol production using Saccharomyces cerevisiae	23
Functionalized iron oxide nanoparticles for covalent immobilization of cellic CTec2 cellulase: enabling enzyme reusability in cellulosic biomass conversion	22
Biodiesel production from by extraction of carp fish (Cyprinidae) oil and transesterification using CaO derived from limestone and eggshells as heterogeneous catalysts	21
Recycling calcium oxide nanoparticles for sustainable biodiesel production from nonedible feedstock Argemone mexicana L.	16
Design and fabrication of smooth periodic constriction reactor to biodiesel production from waste cooking oil	16
Recent advances in conventional and genetically modified macroalgal biomass as substrates in bioethanol production: a review	14
Comprehensive analysis of formaldehyde and acetaldehyde emissions and performance of a diesel engine using various diesel-vegetable oil and diesel-biodiesel blends	14
Influence of high carbonization temperatures on key performance indicators of Arundo donax derived biochars	14
Introducing a promising biomass for bioethanol production: sugary cassava root ( Manihot esculenta Crantz)	13
Performance analysis, techno-economic and life cycle assessment of Jatropha curcas L. (Euphorbiaceae) seedcake gasification and Fischer-Tropsch integrated process for bi	13
Gasifier use for cooking and biochar production by smallholder farmers in Rwanda	13
PPE kit to bio-oil: an experimental investigation	12
Exploring the impact of diesel-vegetable oil blends as an alternative fuel in combustion chambers	11
Comparative assessment of pre-treatment techniques and process economics on marine seaweed, Gelidium pusillum, for enhanced bioethanol production	11
Development of an efficient method to blend forest biomass with agricultural residue to produce fuel pellets with improved mechanical properties	10
Prospects and limitations of existing biofuels and emerging trends in the utilization of nanoparticles for enhanced biofuel production and microbial fuel cell efficiency	10
Pyrolysis of rice-straw and mustard-oil residue blend: evaluation of biochar properties for its sustainable use	10
A bibliometric analysis of studies on diesel engines fuelled with biodiesel and its blends: trends, hotspots, and future research	10
Extraction and characterisation of lignin from residues of Mexican Ocote pine ( Pinus montezumae Lamb.) for biofuel production	9
Effect of single and combined pretreatment strategies applied to Chlorella vulgaris biomass on bioethanol production	9
Saccharification of lignocellulosic biomass using an enzymatic cocktail from marine bacteria	9

High potential low-cost crude enzymes from Algerian fungal strains for plant polysaccharides hydrolysis	9
Investigation on chlorella Sp. HS2 microalgae growth using CO ₂ from engine exhaust to study carbon sequestration	8
Application of phosphoric acid plus hydrogen peroxide pretreatment and Aspergillus species enzymatic decomposition on rice straw for bioethanol production	8
Performance assessment of compression ignition engines powered by biogas, biodiesel, and producer gas mix derived from agriculture waste	8
Microwave furfural aldol condensation with acetone to biofuel intermediates over a potassium promoted waste red mud-derived catalyst	8
Influence of varying aluminum-based combustion compartment sizes on groundnut shell biochar properties	8
Towards sustainable continuous co-production of biodiesel and ether from wet microalgae- a review	8
Long-term productivity of production-scale, high-diversity prairie biomass feedstocks	8
Nanoparticles-suspended biodiesel and its blends in compression ignition engines: a bibliometric analysis of research trend and future outlook	7
Carbon footprint of four bioethanol cropping systems in a temperate region	7
Study of the addition of Gabiroba leaves extract in the biodiesel oxidation reaction in the presence of metal ions	7
Potential use of thermophilic bacteria for second-generation bioethanol production using lignocellulosic feedstocks: a review	7
A critical review on emulsion fuel formulation and its applicability in compression ignition engine	7
Calorific value prediction models of processed refuse derived fuel 3 using ultimate analysis	7
Production of biodiesel from Pistacia atlantica (PA) oil seeds using nano-catalyst of alumina/sludge of stone cutting factory (Al ₂ O	7
Performance optimization by study of tribological and rheological properties of dates oil with graphene oxide nano-additives	7
Production and quality assessment of biodiesel obtained by thermal process from wet microalgae biomass of Choricystis minor var. minor	7
Nitrogen-rich, potato peel-derived hydrochar as an effective dye adsorbent	7
Highlighting the relationship between bioethanol fuel and the institutional and macro-environmental environment in developed and developing countries	7
Valorization of fish waste for sustainable biofuel production: A case study in Ghana	6
Nanotechnology for a greener future: sustainable energy and biofuel advances	6
Compositional study of bio-oil obtained from torrefaction of mixed food waste using H-NMR,¹³C-NMR, DEPT 90 & 135, and GC-MS	6
State-of-the-art novel catalyst synthesized from waste rice husk and eggshells for cleaner biodiesel production	6
Synergistic effects of SWCNT and MgO nanoparticle additives on engine performance and emissions: a laboratory analysis approach	6
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	6
Valorization of spent coffee grounds: a multi-solvent extraction approach and blending with waste cooking oil for sustainable biodiesel production	6
Anisidine value as oxidation stability indicator in FAME	6
A thermodynamic approach to assess the sustainability of third-generation sunflower waste cooking oil in DICI engine along with exergoeconomic and enviroeconomic perspective	6
Overview of microwave-assisted transesterification technology for biodiesel production with bibliometric indicators	6
Synthesis and characterisation of a novel silica—CaO/TPA catalyst for biodiesel production	6
Teak leaf biochar production for sustainable forest waste management at low temperatures	6
Exergy analysis of fusel oil as an alternative fuel additive for spark ignition engines	6
Exploring the potential of microalgae cell factories for generation of biofuels	5
Simultaneous computational modelling and experimental validation for Sterculia urens oil extraction for biodiesel application	5
A comprehensive assessment of vehicular performance and emission characteristics during real-time test-runs using selected bio-ethanol–gasoline blends	5
NaCl stress mediated lipid and carotenoid production in freshwater microalga Kirchneriella obesa by optimization of medium composition using response surface methodology	5
Biodiesel production from fish oil: a review	5
A combined study of filterability and soaking strength of fuel filter and effect of injection timing on CI engine characteristics using Ceiba pentandra biodiesel	5
Modeling and simulation of an integrated bioethanol-hydrogen production process	5
Effects of ethyl proxitol (1-ethoxy-2-propanol) additive on combustion and emission characteristics of biodiesel blends	5
Forest biomass potential for wood pellets production in the United States of America for exportation: a review	5
Effect of diesel and pentanol blends on PAH formation and regulated pollutants	5
Greenhouse gas emissions from rapeseed oil ethyl and methyl esters	5
The effects of the usage of silicon dioxide (SiO ₂ ) and titanium dioxide (TiO ₂ ) as nano-sized fuel additives on the engine char	4
A methodology to formulate technology roadmap and policy package in biofuels	4
Effect of hydrogen induction on CI engine characteristics fuelled with kapok oil methyl ester-turpentine blend with diethyl ether	4
The feasibility of renewable energy recovery from municipal solid wastes in Palestine based on different scenarios	4
Economic analysis of the sustainable aviation fuel supply chain from hybrid poplar in the southeast US considering alternative preprocessing technologies	4
The comparative financial feasibility analysis and the environmental impacts of sugarcane-based bioethanol production in South Africa	4
Optimization studies on bio-oil yield using microwave-assisted pyrolysis of bio-sludge	4

Study of performance, emission characteristics, and parametric optimization of compression ignition engine using biofuels: A review	4
Evaluation of combustion characteristics and emission reduction potential of fusel oil–gasoline blends in a turbocharged 1.8 L gasoline direct injection (GDI) engine	4
Experimental investigation of elastomer compatibility and engine performance of biodiesel derived from deodorizer distillate	4
Comparative study of pretreatment methods for the reverse enzymatic hydrolysis of Chlorella and Spirulina microalgae for bioethanol produc	4
Biodiesel production from sunflower oil using a combined atmospheric cold plasma jet-hydrodynamic reactor	4
Microwave subcritical water pre-treatment and enzymatic hydrolysis of geographical identification (GI) tag Indian black rice (Chakhao Poireiton) straw for fermentable sugar production	4
Thermo chemical conversion of cedar wood by pyrolysis technology for bio-oil	4
Growth characteristics and biodiesel properties of fatty acids methyl esters (FAMEs) of Scenedesmus dimorphus (Turpin) Kützing	4
Enhancing sustainability: co-pyrolysis of date palm branches and wastewater microalgae for tailored biochar production	4
Enhanced biofuel dehydration using MXene-PES nanocomposite membranes via pervaporation	4
The effects of biodiesel produced from waste cooking oils on vibroacoustic properties of a heavy-duty diesel engine	4
Methane, a renewable biofuel: from organic waste to bioenergy	4
Methanol, isobutanol, kerosene, dimethylfuran, ethanol, and isopropanol additives effects on soot concentration at hydrogen-enriched methane flames	4