Cinética de adsorção de Cr (VI) a partir da biomassa residual quimicamente modificados em sistemas de grupo e contínuas
Publicado 2015-07-17
Palavras-chave
- Ácido Cítrico,
- Adsorção,
- Biomassa Residual,
- Crómio Hexavalente.
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Resumo
Adsorção de Cr (VI) é estudada a partir da biomassa de resíduos: conchas bagaço yam palmeiras e estudou ainda a modificação do ácido cítrico com biomassa. A determinação de metais em solução foi realizada usando o método do 1,5-difenilcarbazida. Análise FTIR verificou-se que os grupos hidroxilo e carbonilo presentes nos adsorventes são a maior contribuição para o processo de remoção. Além da modificação melhora a eficiência de metal de acordo com a isotérmica de Langmuir 13-41 mg/g de bagaço, de palma, e de 22 a 26 mg/g, para os reservatórios de inhame. Melhorou ainda mais estados no processo de biomassa trabalhando em sistema contínuo. As melhores condições para a adsorção foi determinado que o pH de 2 e o tamanho de partícula 1mm são o processo mais vantajoso, e Elovich modelo que melhor descreve.
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Referências
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