Source: http://brjd.com.br/index.php/BRJD/article/view/1675
Timestamp: 2019-04-24 23:14:17+00:00

Document:
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.
Vermiculita, quitosana, adsorção, metais pesados.
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