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BIBTEX RIS

Adsorção do corante reativo laranja 16 de soluções aquosas por zeólita sintética

2010; Brazilian Chemical Society; Volume: 33; Issue: 2 Linguagem: Inglês

10.1590/s0100-40422010000200023

ISSN

1678-7064

Autores

Terezinha Elizabeth Mendes de Carvalho, Denise Alves Fungaro, Juliana de Carvalho Izidoro,

Tópico(s)

Zeolite Catalysis and Synthesis

Resumo

AQUEOUS SOLUTIONS BY SYNTHESIZED ZEOLITE.Coal fly ash, a waste generated in a coal-fired electric power plant, was used to synthesize zeolite by hydrothermal treatment with NaOH solution.This zeolite was used as adsorbent to investigate the adsorption kinetics and isotherm parameters of the reactive orange 16 (RO16) dye from aqueous solutions at different concentrations (1.3-15.4mg L -1 ).Three kinetic models, the pseudo-first-order, second-order, and intraparticle diffusion were used to predict the adsorption rate constants.The kinetics of adsorption of the RO16 dye followed pseudo-second-order kinetics.The adsorption isotherm data were closely fitted to the Langmuir equation.

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