Japão cria tecnologia capaz de remover CO2 direto da atmosfera

Pesquisadores da Universidade de Tóquio desenvolveram sistema que retira dióxido de carbono diretamente da atmosfera

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A mudança climática está tendo repercussões desastrosas em todo o mundo, exigindo o desenvolvimento de novas tecnologias e estilos de vida que resultem em menores emissões de dióxido de carbono.

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Além disso, muitos cientistas estão buscando estratégias para limitar a quantidade de CO2 que já colocamos na atmosfera.

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Por isso, pesquisadores da Universidade Metropolitana de Tóquio criaram uma nova tecnologia de captura de carbono que extrai CO2 diretamente do ambiente, e desempenho incomparável.

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Em um método de “separação de fase líquido-sólido”, descobriu-se que a nova molécula, a isoforona diamina (IPDA), remove o dióxido de carbono em baixas quantidades no ambiente com 99% de eficácia.

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O composto é reutilizável, requer pouco aquecimento e é pelo menos duas vezes mais rápido que os criados anteriormente, tornando-se uma nova invenção inteligente para coleta direta de CO2 do ar.

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Japão cria tecnologia capaz de remover CO2 da atmosfera de forma mais eficiente

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Muitos sistemas de captura direta de ar (DAC) incluem ar borbulhante, que pode absorver CO2 ou dividi-lo em cristais sólidos ou flocos.

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Quando o produto da reação é insolúvel e sai da solução como um sólido, os dispositivos de separação de fase líquido-sólido fornecem uma solução atraente.

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Não há acúmulo de produto no líquido e a velocidade de resposta não diminui muito.

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Nesse novo estudo, os pesquisadores se concentraram em compostos de aminas líquidas, alterando sua estrutura para aumentar a velocidade e a eficiência da reação.

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Eles descobriram que o IPDA poderia remover mais de 99% do CO2 do ar em uma concentração de 400 partes por milhão em testes (ppm).

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O estudo mostra ainda que o aquecimento do sólido distribuído em solução a 333 K (60 graus Celsius) foi suficiente para liberar totalmente o dióxido de carbono coletado e retornar ao composto original. para dias de sol e ar condicionado.

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