Captura direta de carbono no ar usando estruturas metal-orgânicas (MOFs)
desempenho técnico-econômico de sistemas de adsorção por oscilação de temperatura e vácuo (TVSA)
DOI:
https://doi.org/10.36561/ING.28.16Palavras-chave:
Captura direta de carbono no ar, adsorção por oscilação de temperatura e vácuo, estrutura metal-orgânicaResumo
A tecnologia de Captura Direta de Carbono no Ar (DACC) é usada para remover CO₂ diretamente da atmosfera, ajudando a combater as mudanças climáticas e as emissões excessivas de gases de efeito estufa de forma eficiente. Neste estudo, foi realizada uma análise técnico-econômica do DACC, incluindo seus mecanismos de funcionamento, necessidades energéticas e custos, bem como um resumo do status atual da pesquisa. Esta pesquisa compara duas estruturas metal-orgânicas (MOFs) líderes — MIL-101(Cr)-PEI-800 e mmen-Mg₂(dobpdc) — com foco em seu consumo de energia, adsorção de CO₂ e custo. Este estudo investiga o desempenho dessas MOFs em um processo de adsorção por oscilação de temperatura e vácuo (TVSA), que varia ciclicamente a temperatura e a pressão para capturar CO₂ e regenerar adsorventes. Entre todos os materiais, o mmen-Mg₂(dobpdc) atinge o melhor desempenho com uma capacidade muito maior e uma forma isotérmica não linear favorável, indicando eficiência significativamente melhorada e menor consumo de energia. Os sistemas DACC baseados em MOFs avançados são bastante promissores para minimizar as emissões de fontes difusas e, portanto, devem ser considerados componentes essenciais de uma estratégia de mitigação das mudanças climáticas. Este estudo contribui para direcionar futuras pesquisas e desenvolvimentos em direção a MOFs mais eficientes e econômicos em aplicações DACC.
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