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Abstract(s)
O estudo desenvolvido no Instituto Politécnico de Bragança (IPB) investigou as técnicas de aproveitamento e tratamento dos gases liberados a partir da digestão anaeróbia. Inicialmente foi realizada uma revisão sistemática da literatura sobre o processo de atualização, ou seja, transformação do biogás em biometano, tomando como referência o método Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) associada com análise bibliométrica. Posteriormente, foi desenvolvida uma análise experimental aplicando o método baseado Pressure swing adsorption (PSA), método de purificação ainda pouco popular comercialmente, utilizado principalmente na remoção do CO2 e outros gases componentes do biogás. Desse modo, o trabalho avaliou a remoção do CO2 no PSA utilizando um tipo específico de carvão ativado, conhecido como peneira molecular de carbono (CMS - Carbon Molecular Sieve). Essa análise permitiu entender a capacidade de adsorção de CO2 e a afinidade do CMS-3K com o metano. A busca na base Web of Science resultou um elevado número de documentos, refinados a artigos sobre atualização de biogás com peneira molecular de carbono em colunas PSA. Foi possível inferir que a partir de 2018, as publicações aumentaram significativamente, impulsionadas pelos eventos internacionais pautados na preocupação climática e necessidade de promover uma economia de baixo carbono. Ademais, realizou- se uma análise detalhada conduzida, usando um método específico de processamento de dados bibliográficos, permitindo uma compreensão ampla do cenário. Identificou-se colaborações acadêmicas entre os principais países foram identificadas, promovendo a troca de conhecimento e tecnologia, podendo inferir que as relações entre os países, influenciadas por fatores históricos, econômicos e culturais, desempenham um papel importante na colaboração científica. A pesquisa destaca que a técnica de PSA utilizando peneiras moleculares de carbono é uma alternativa promissora para a purificação do biogás em biometano, embora ainda pouco difundida. O desenvolvimento e a aplicação dessa tecnologia podem melhorar a gestão de resíduos sólidos urbanos, gerar um combustível renovável versátil e reduzir as emissões de gases de efeito estufa, promovendo assim um desenvolvimento sustentável e contribuindo para a transição energética global.
The study conducted at the Polytechnic Institute of Bragança (IPB) investigated techniques for harnessing and treating gases released from anaerobic digestion. Initially, a systematic literature review was conducted on the upgrading process, i.e., the transformation of biogas into biomethane, using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method associated with bibliometric analysis. Subsequently, an experimental analysis was developed applying the Pressure Swing Adsorption (PSA) method, a purification method still not widely popular commercially, mainly used in the removal of CO2 and other gas components from biogas. Thus, the study evaluated CO2 removal in PSA using a specific type of activated carbon known as Carbon Molecular Sieve (CMS). This analysis allowed understanding the CO2 adsorption capacity and the affinity of CMS-3K with methane. A search in the Web of Science database yielded a high number of documents, refined to articles on biogas upgrading with carbon molecular sieves in PSA columns. It was possible to infer that since 2018, publications have increased significantly, driven by international events focused on climate concern and the need to promote a low-carbon economy. Furthermore, a detailed analysis was conducted using a specific bibliographic data processing method, allowing a comprehensive understanding of the scenario. Academic collaborations among key countries were identified, promoting knowledge and technology exchange, suggesting that relationships between countries, influenced by historical, economic, and cultural factors, play an important role in scientific collaboration. The research highlights that the PSA technique using carbon molecular sieves is a promising alternative for biogas purification into biomethane, although still not widely disseminated. The development and application of this technology can improve urban solid waste management, generate versatile renewable fuel, and reduce greenhouse gas emissions, thus promoting sustainable development and contributing to global energy transition.
The study conducted at the Polytechnic Institute of Bragança (IPB) investigated techniques for harnessing and treating gases released from anaerobic digestion. Initially, a systematic literature review was conducted on the upgrading process, i.e., the transformation of biogas into biomethane, using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method associated with bibliometric analysis. Subsequently, an experimental analysis was developed applying the Pressure Swing Adsorption (PSA) method, a purification method still not widely popular commercially, mainly used in the removal of CO2 and other gas components from biogas. Thus, the study evaluated CO2 removal in PSA using a specific type of activated carbon known as Carbon Molecular Sieve (CMS). This analysis allowed understanding the CO2 adsorption capacity and the affinity of CMS-3K with methane. A search in the Web of Science database yielded a high number of documents, refined to articles on biogas upgrading with carbon molecular sieves in PSA columns. It was possible to infer that since 2018, publications have increased significantly, driven by international events focused on climate concern and the need to promote a low-carbon economy. Furthermore, a detailed analysis was conducted using a specific bibliographic data processing method, allowing a comprehensive understanding of the scenario. Academic collaborations among key countries were identified, promoting knowledge and technology exchange, suggesting that relationships between countries, influenced by historical, economic, and cultural factors, play an important role in scientific collaboration. The research highlights that the PSA technique using carbon molecular sieves is a promising alternative for biogas purification into biomethane, although still not widely disseminated. The development and application of this technology can improve urban solid waste management, generate versatile renewable fuel, and reduce greenhouse gas emissions, thus promoting sustainable development and contributing to global energy transition.
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Keywords
PRISMA Bibliometria Biometano CMS-3K Gás de aterro Pressure swing adsorption