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Adsorption of ions onto treated natural zeolite

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Adsorption of ions onto treated natural zeolite

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Título Adsorption of ions onto treated natural zeolite
Autor Rodrigues, Cristiane Oliveira
Rubio, Jorge
Abstract This work presents studies of modification of a natural zeolite by activation with Na+ cations and functionalisation with Ba+2 and/or Cu2+ ions (FZ). The zeolite was characterized, modified and applied in adsorption studies of sulphate and isopropilxanthate ions as flocculated and powdered forms. The reuse of SO4Ba-FZ was investigated by adsorption-removal of either Ba2+ or sulphate ions in stages. Equilibrium data showed that the FZ, flocculated or as powder, provide considerable removal of sulphate ions (qmLangmuir: 1.15 and 1.35 meq.g–1, respectively) and isopropilxanthate (qmLangmuir: 0.35 and 0.93 meq.g-1, respectively). The reuse of the SO4-FZ, either powdered or flocculated also uptake significant amount of Ba2+ or sulphate ions (qmLangmuir: 1.15 meq.g–1), providing a new alternative for the exhausted adsorbent. Thus the activated and functionalised zeolites create new options on the materials engineering area with applications in environmental applied adsorption processes.
Contido em Materials research: ibero-american journal of materials. São Carlos, SP. vol. 10, no. 4 (Dec. 2007), p. 407-412
Assunto Adsorcao
Tratamento de minérios
[en] Adsorption
[en] Modified materials
[en] Natural zeolites
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/20828
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