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Tratamento por ultrassons de subprodutos da moagem a seco
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ISBN10: 6209902464
ISBN13: 9786209902468
Publisher: Edicoes Nosso Conhecimento
Published: May 8 2026
Pages: 56
Weight: 0.19
Height: 0.13 Width: 6.00 Depth: 9.00
Language: Portuguese
ISBN13: 9786209902468
Publisher: Edicoes Nosso Conhecimento
Published: May 8 2026
Pages: 56
Weight: 0.19
Height: 0.13 Width: 6.00 Depth: 9.00
Language: Portuguese
Este estudo avalia a variação do tamanho das partÃculas dos coprodutos da moagem a seco do milho para etanol, utilizando energia ultrassónica para aumentar a produção de biogás proveniente da digestão anaeróbica desses coprodutos, nomeadamente: grãos secos de destilação com solúveis (DDGS), sólidos, resÃduos lÃquidos e xarope de milho. As amostras de coprodutos foram tratadas com várias condições ultrassónicas e comparadas com amostras não tratadas (amostra de controlo). A amplitude ultrassónica variou entre 52,8 mpp e 160 mpp e o tempo de sonicação variou entre 10 e 50 s. As amostras foram caracterizadas por microscopia eletrónica de varrimento e microscopia ótica (SEM, OM) e análise da distribuição de partÃculas (PDA). Verificou-se que, no caso das suspensões sólido/lÃquido (DDGS, sólidos), houve uma diminuição significativa do tamanho das partÃculas, aumentando a relação área superficial/volume, o que poderá aumentar o rendimento de biogás durante a digestão anaeróbica destes materiais. No caso do vinho fino e do xarope de milho, os resultados foram surpreendentes, na medida em que se observou um aumento do tamanho das partÃculas.
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