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

Química Nova

Mirian Chieko Shinzato²  Tarcísio José Montanheiro¹  Valdecir De Assis Janasi¹  Sandra Andrade¹  Jorge Kazuo Yamamoto¹ 

[1] ,Universidade Federal de São PauloDiadema SP ,Brasil

关键词: natural zeolites;    adsorption;    heavy metals;   

DOI  :  10.1590/S0100-40422009000800002

来源: SciELO

【 摘 要 】

The capacity of natural zeolites and its host rock (dacite) to remove Pb2+ and Cr3+ from aqueous solutions has been investigated. Results showed that both samples prefer to remove Pb2+ instead of Cr3+. Almost 100% of Pb2+ 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 Pb2+, but not to remove Cr3+ from the treated samples. The Sips model showed a good fit for experimental data of this study.

【 授权许可】

CC BY-NC   
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