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DYNA

versão impressa ISSN 0012-7353

Resumo

ARROYAVE-MANCO, Juan Camilo; ARBOLEDA, Johana Catalina; HOYOS-AYALA, Dora Ángela  e  ECHAVARRIA-ISAZA, Adriana Patricia. LTA and FAU zeolites from coal combustion and residue by-products for Chromium removal application. Dyna rev.fac.nac.minas [online]. 2018, vol.85, n.204, pp.150-160. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v85n204.67096.

In this paper, the process for the synthesis of LTA and/or FAU zeolites from waste materials from mining and manufacturing industry from Antioquia (Colombia) was described. The product was used as adsorbent for the removal of Cr (III) in solutions prepared in the laboratory. The waste materials were characterized by X-ray fluorescence, and X-ray diffraction. The zeolites were characterized by X-ray diffraction, X-ray fluorescence, scanning electron microscopy (SEM) and BET area. Absorption data in Cr(III) removal tests were obtained by elemental composition from atomic absorption spectroscopy, and evaluated by Langmuir, Freundlich and Temkin models, and four kinetics models. The results showed the formation of zeolites from waste materials, and effective in adsorption tests of Cr (III).

Palavras-chave : waste materials; adsorption; zeolite LTA; zeolite FAU; Cr(III) removal.

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