171182 20260515163945.0 doi 10.1021/acssusresmgt.5c00602 sideral 149257 ART-2026-149257 eng Peres, Sergio An Experimental Investigation of the Emissions from a Generator Operating under Hydrogen, Diesel, and Biodiesel Co-Combustion 2026 Renewable fuels have gained significant attention due to the potential to replace their counterparts derived from fossil fuel. Among them, hydrogen and biodiesel have led the discussion. Thus, the objective of this study is to evaluate the use of hydrogen (H2) and biodiesel as partial or complete substitutes for gasoil (diesel fuel) in a compression ignition engine, focusing on performance and gaseous emissions. At full load, H2 supplied approximately 30% of the total fuel energy input. The experimental campaigns were conducted under four fuel configurations: diesel fuel only, diesel fuel + hydrogen, biodiesel only, and biodiesel + H2 in co-combustion. The results remarkably show that the combined use of biodiesel and hydrogen resulted in the elimination of greenhouse gas emissions. Compared with the diesel fuel operation mode, the biodiesel + H2 blend led to substantial reductions in CO, CO2, and NOx emissions. At full load, the measured emissions were as follows: diesel fuel − CO2: 7.66%, CO: 323 ppm, NOx: 639 ppm; diesel fuel + H2 − CO2: 5.95%, CO: 312 ppm, NOx: 829 ppm; biodiesel − CO2: 8.14%, CO: 266 ppm, NOx: 687 ppm; biodiesel + H2 − CO2: 4.67%, CO: 205 ppm, NOx: 597 ppm, showing that biodiesel reduces significantly the amount of emissions compared to diesel fuel or diesel fuel hydrogen blend. These findings highlight the potential of H2 − BD co-combustion as a cleaner alternative to conventional diesel, with significant benefits for greenhouse gas mitigation and air quality improvement. info:eu-repo/grantAgreement/ES/AEI/PID2023-148958OB-C21 info:eu-repo/semantics/closedAccess All rights reserved http://www.europeana.eu/rights/rr-f/ info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Bezerra, Djailson Joaquim Vieira Júnior, Clériston Moura Da Silva Santos, Humberto Universidad de Zaragoza (orcid)0000-0002-0297-1834 Souto Maior, Rafael Aguiar González Rodríguez, Daniel Antonino, Antonio Celso Dantas de Miranda Loureiro, Eduardo César 5004 590 Universidad de Zaragoza Dpto. Ingeniería Mecánica Área Máquinas y Motores Térmi. 3, 4 (2026), 1053-1062 ACS sustain. resource manag. ACS sustainable resource management 2837-1445 1937660 http://zaguan.unizar.es/record/171182/files/texto_completo.pdf Versión publicada 3290140 http://zaguan.unizar.es/record/171182/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:171182 articulos driver 2026-05-15-14:54:35 ARTICLE