125 documents found, page 1 of 13

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Sustainable Production of Poly(3-hydroxybutyrate) Using Eucalyptus Bark: Integr...

Matias, João; Rodrigues, Thomas; Torres, Cristiana A. V.; Marques, Susana; Ribeiro, Belina; Gírio, Francisco; Reis, Maria A.; Freitas, Filomena

ABSTRACT: This study integrates the valorization of a lignocellulose material into poly(3-hydroxybutyrate), P(3HB), with biopolymer extraction from bacterial cells with the enzyme alcalase. The work focused on Burkholderia thailandensis DSM 13276 as the P(3HB) producer and on eucalyptus bark, a byproduct from the pulp industry, as the sole feedstock for bacterial cultivation. The eucalyptus bark was hydrolyzed ...

Date: 2026   |   Origin: Repositório do LNEG

Systematic and Bibliometric Review of Biomethane Production from Biomass-Based ...

Tiago, Gonçalo A. O.; Rodrigo, Naresh P. B.; Lourinho, Gonçalo; Lopes, Tiago; Gírio, Francisco

ABSTRACT: Fossil fuels drive global warming, necessitating renewable alternatives such as biomethane (or renewable natural gas). Biomethane, primarily produced through anaerobic digestion (AD), offers a cleaner energy solution but is limited by the slow AD process. Biomass gasification followed by syngas methanation has emerged as a faster alternative. This review examines advancements in these processes over t...

Date: 2025   |   Origin: Repositório do LNEG

Systematic and Bibliometric Review of Biomethane Production from Biomass-Based ...

Tiago, Gonçalo A. O.; Rodrigo, Naresh P. B.; Lourinho, Gonçalo; Lopes, Tiago; Gírio, Francisco

ABSTRACT: Fossil fuels drive global warming, necessitating renewable alternatives such as biomethane (or renewable natural gas). Biomethane, primarily produced through anaerobic digestion (AD), offers a cleaner energy solution but is limited by the slow AD process. Biomass gasification followed by syngas methanation has emerged as a faster alternative. This review examines advancements in these processes over t...

Date: 2025   |   Origin: Repositório do LNEG

Production of sustainable aviation fuel precursors using the oleaginous yeast R...

Saraiva Lopes da Silva, Maria Teresa; Dutra, Francisca; Gomes, Miguel; Costa, Paula; Paradela, Filipe; Ferreira, Frederico Castelo

ABSTRACT: Sustainable aviation fuels (SAF) obtained from renewable sources of carbon can reduce carbon dioxide emissions and contribute for mitigating climate changes. In the present study, the yeast Rhodotorula toruloides PYCC 5615 was found to be highly promising for the bioconversion of eucalyptus bark hydrolysate and the accumulation of intracellular lipids which were further thermochemically processed to b...

Date: 2025   |   Origin: Repositório do LNEG

Integrating social aspects in microalgal biorefineries: a Product Social Impact...

Ortigueira, Joana; Lopes, Tiago; Reis, Alberto; Gírio, Francisco

ABSTRACT: The ongoing climate change phenomenon requires the reduction of atmospheric CO2 concentrations. Microalgal biorefineries, which convert atmospheric CO2 into chemical energy, offer a viable alternative to fossil fuel-based industrial systems. This study assesses the social impacts of microalgal biorefineries using the Product Social Impact Life Cycle Assessment database approach, focusing on an industr...

Date: 2025   |   Origin: Repositório do LNEG

Alternative feedstocks for high-quality biodiesel: Lipid production from eucaly...

Dias, Bruna; Lopes, Marlene; Marques, Susana; Gírio, Francisco; Belo, Isabel

ABSTRACT: Microbial lipids produced by yeasts from lignocellulosic biomass are a promising feedstock for the biodiesel industry, providing a renewable energy source as an alternative to traditional fossil fuels. This study investigated the potential of Yarrowia lipolytica W29 to produce lipid-rich biomass from undetoxified sugar-concentrated eucalyptus bark hydrolysate (EBH). The lipid concentrations achieved i...

Date: 2025   |   Origin: Repositório do LNEG

LNEG obrigado a aceitar as certificações dos biocombustíveis reconhecidas pela UE

Gírio, Francisco

RESUMO: Recentemente, notícias vieram a público sobre possível fraude na origem de biocombustíveis usados na Europa e em Portugal. A Associação ZERO veio mesmo sublinhar que, apesar de Portugal ter assumido o compromisso de abandonar o uso de biocombustíveis à base de óleo de palma, inscrito na Lei de Bases do Clima e no Orçamento do Estado para 2022, a medida nunca saiu do papel. Por outro lado, os produtores ...

Date: 2025   |   Origin: Repositório do LNEG



Evaluation Meeting of the Scientific Council of IMDEA-Energy 2024

Kaltschmitt, Martin; Monzón, Antonio; Gálvez, Elena; Bodoardo, Silvia; Gírio, Francisco; Fröba, Michael; Berenguel, Manuel; Olivares, José A.

Date: 2025   |   Origin: Repositório do LNEG

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