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Remoção de Pb2+ e Cr3+ em solução por zeólitas naturais associadas a rochas eruptivas da formação serra geral, bacia sedimentar do Paraná

2009; Brazilian Chemical Society; Volume: 32; Issue: 8 Linguagem: Inglês

10.1590/s0100-40422009000800002

1678-7064

Mirian Chieko Shinzato, Tarcísio José Montanheiro, Valdecir de Assis Janasi, Sandra Andrade, Jorge Kazuo Yamamoto,

Groundwater and Isotope Geochemistry

The capacity of natural zeolites and its host rock (dacite) to remove Pb 2+ and Cr 3+ from aqueous solutions has been investigated.Results showed that both samples prefer to remove Pb 2+ instead of Cr 3+ .Almost 100% of Pb 2+ was removed from solutions with concentration until 50 mg L -1 and 100 mg L -1 of this metal, respectively by dacite and zeolite.The equilibrium of metals adsorption process was reached during the first 30 min by both materials.Na + can be used to recover Pb 2+ , but not to remove Cr 3+ from the treated samples.The Sips model showed a good fit for experimental data of this study.