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Orientador(es)
Resumo(s)
In this study, an adsorption experiment is proposed using commercial activated carbon as adsorbent and a textile azo dye, Mordant Blue-9, as adsorbate. The surface chemistry of the activated carbon is changed through a simple oxidation treatment and the ionic strength of the dye solution is also modified, simulating distinct conditions of water hardness. The purpose of this experimental work, directed to undergraduate (second-year) students is to allow them to understand the influence of surface chemistry and ionic strength on the interaction between the carbon surface and the dye molecule.
Descrição
Palavras-chave
Second-year undergraduate Physical chemistry Environmental chemistry Hands-on learning/manipulatives Surface science UV-vis spectroscopy Laboratory instruction
Contexto Educativo
Citação
MARTINS, Ângela; NUNES, Nelson – Adsorption of a textile dye on commercial activated carbon: a simple experiment to explore the role of surface chemistry and ionic strength. Journal of Chemical Education. ISSN 0021-9584. Vol. 92, N.º 1 (2015), pp. 143-147
Editora
American Chemical Society