The importance of environmental issues has drawn attention to the waste from industries and due to the lack of application for the use of this material, it becomes necessary a direction of applicability of this material as adsorbents, which can assist in the treatment of industrial effluents containing chemicals that may be harmful to the environment. In view of the above, the present research aimed to evaluate the use of the residue from the silicon metal manufacturing process in the removal of malachite green dye in aqueous media. The parameters analyzed were granulometry, calibration curve, zero loading point, kinetics and adsorption equilibrium. The analyses were performed in duplicate and batch, varying adsorbate concentration and contact time. The kinetic data were fitted to pseudo-first-order, pseudo-second-order, Weber Morris and Elovich theoretical models. The adsorption kinetics study showed that the best fit and linearity was obtained for the pseudo-second order model, as it contains 97.7% explanation of the total variability. For the equilibrium analyses it was observed that the adsorption process was favorable and the best fit of the data was observed for the Temkin isotherm, due to its better ability to reproduce the experimental values of adsorption, when compared to the experimental data, resulting in 94.4% explanation. The analyses and results obtained in this study indicate that the residue used presents a potential characteristic to be used as an adsorbent of malachite green dye.
For details:
Adsorption of malachite green dye using fraction originating from residue of the manufacture of silicon metal
Andreza de Souza Castillo 1, Maria Eduarda Adelaide Melo Souza 2, Chrystian da Silva Valente 2, João Alcebíades Cardoso e Silva 2, Fábio José Bonfim Cardoso 3, Karyme do Socorro de Souza Vilhena 4
- Graduada em Engenharia Sanitária e Ambiental Instituição: Universidade Federal do Pará - Campus Universitário de Tucuruí - Laboratório de Química Multidisciplinar
- Graduanda em Engenharia Civil Instituição: Universidade Federal do Pará - Campus Universitário de Tucuruí, Faculdade de Engenharia Civil
- Doutor em Físico-Química Instituição: Universidade Federal do Pará - Campus Universitário de Tucuruí - Laboratório de Química Multidisciplinar
- Doutora em Química Orgânica Instituição: Universidade Federal do Pará - Campus Universitário de Tucuruí - Laboratório de Química Multidisciplinar
Brazilian Journal of Development
ISSN: 2525-8761
DOI:10.34117/bjdv8n9-278
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