Layered double hydroxides for remediation of industrial wastewater containing manganese and fluoride.
| dc.contributor.author | Teixeira, Mariana Araujo | |
| dc.contributor.author | Mageste, Aparecida Barbosa | |
| dc.contributor.author | Dias, Anderson | |
| dc.contributor.author | Virtuoso, Luciano Sindra | |
| dc.contributor.author | Siqueira, Kisla Prislen Félix | |
| dc.date.accessioned | 2018-05-17T13:55:51Z | |
| dc.date.available | 2018-05-17T13:55:51Z | |
| dc.date.issued | 2018 | |
| dc.description.abstract | This work describes an environmentally-friendly procedure for the removal of manganese and fluoride from industrial wastewaters (IW) using layered double hydroxides (LDHs) and calcined layered double oxides (LDOs). Ternary Mg-Mn-Al LDHs (LDH-IW) were produced from IW containing a high concentration of manganese, which decreased from (99.420 ± 3.110) mg L 1 to (0.003 ± 0.001) mg L 1 after the synthesis procedure. Synthetic Mg-Al LDH was also produced for comparison purposes. Both materials were calcined and the resulting oxides (LDO and LDO-IW) were used for the removal of fluoride present in the same IW. The materials were characterized by X-ray diffraction, electron energy-loss spectroscopy, thermal analysis, Raman spectroscopy, and electron microscopy. The kinetics and adsorption isotherms for fluoride removal from aqueous solutions were studied in batch mode. For both LDO and LDO-IW, the adsorption of fluoride followed pseudo-second order reaction kinetics. Langmuir-type adsorption was observed for LDO, while adsorption by LDO-IW was according to the Freundlich model. The results showed that the oxides were able to remove 94% of the fluoride present in the IW at an initial concentration of 162 mg L 1. The procedure reduced the concentrations of the pollutants (manganese and fluoride) to levels that complied with Brazilian effluent standards. | pt_BR |
| dc.identifier.citation | TEIXEIRA, M. A. et al. Layered double hydroxides for remediation of industrial wastewater containing manganese and fluoride. Journal of Cleaner Production, v. 171, p. 275-284, 2018. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0959652617323016>. Acesso em: 05 abr. 2018. | pt_BR |
| dc.identifier.issn | 09596526 | |
| dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/9949 | |
| dc.identifier.uri2 | https://www.sciencedirect.com/science/article/pii/S0959652617323016 | pt_BR |
| dc.language.iso | en_US | pt_BR |
| dc.rights | restrito | pt_BR |
| dc.subject | Wastewater | pt_BR |
| dc.subject | Pollutants removal | pt_BR |
| dc.subject | Fluoride | pt_BR |
| dc.subject | Manganese | pt_BR |
| dc.title | Layered double hydroxides for remediation of industrial wastewater containing manganese and fluoride. | pt_BR |
| dc.type | Artigo publicado em periodico | pt_BR |