Uso de materiais de baixo custo para remoção de íons cu2+ e pb2+em colunas de leito fixo / Use of low cost materials to remove ions cu2 + and pb2 + in fixed bed columns

Anne Priscila Oliveira da Silva, Elaine da Cunha Silva Paz, Marcelo Mendes Pedroza, Jailson Vieira de Melo

Abstract


Os metais pesados são usados em muitos processos industriais, tal como, fabricação de utensílios domésticos. Estes são prejudiciais para o meio ambiente e seres vivos. A procura do melhoramento do processo de adsorção com materiais de baixo custo foi o que incentivou o desenvolvimento deste trabalho, realizado com o objetivo de remover Cu2+ e Pb2+ de soluções aquosas. Utilizou-se a quitosana e a vermiculita, o qual estes materiais são comumente utilizados segundo a literatura como materiais adsorventes. Neste trabalho é discutida a modificação da vermiculita expandida com a quitosana, através de um estudo de adsorção de metais em ensaios de colunas. Para caracterização do material obtido foram usadas as seguintes técnicas: Espectroscopia na região do infravermelho (IV) e Análise térmica (TG/DTG). O conjunto de dados obtido mostra que o processo de adsorção com o material modificado é satisfatório para elementos de pequeno tamanho de partícula.


Keywords


Vermiculita, quitosana, adsorção, metais pesados.

References


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