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Cr(VI) and Cr(III) removal from aqueous solution by raw and modified lignocellulosic materials: a review
(Elsevier Science, 2010-08)
In aqueous systems, chromium usually exists in both trivalent and hexavalent oxidation states, being Cr(VI) of particular importance and concern due to its great toxicity. Industrial sources of Cr(VI) are leather tanning, ...
Desenvolvimento de uma metodologia eletroquímica para determinação de Cr(III) e Cr(VI) utilizando sílica gel funcionalizada com 1,5-DifenilcarbazidaDevelopment of an electrochemical methodology for Cr (III) and Cr (VI) determination using 1,5-Diphenylcarbazide functionalized silica gel
(Universidade Federal de UberlândiaBrasilPrograma de Pós-graduação em Química, 2019)
Utilização de escamas do peixe corvina para adsorção de Cr(VI) em meio aquoso - cinética e termodinâmica por calorimetria isotérmica contínua
(Universidade Federal de SergipePós-Graduação em QuímicaBRUFS, 2017)
Computer aided design of membrane processes for effluent treatment and Cr(VI) recovery for reuse on-site
(Institution of Chemical Engineers, 2003-09)
The design of a nondispersive solvent extraction plant for effluent treatment and Cr(VI) recovery for recycle and reuse on-site is presented. The process has an extraction sector where Cr(VI) is extracted from the effluent ...
REMOVAL MECHANISMS OF CHROMIUM(VI) FROM THE SOIL BY INTERACTION BETWEEN ORGANIC MATTER AND IRON(III)MECANISMOS DE REMOÇÃO DE CROMO(VI) DO SOLO PELA INTERAÇÃO ENTRE MATÉRIA ORGÂNICA E FERRO(III)
(Instituto Geológico, Secretaria do Meio Ambiente, São Paulo, 2019)
Textile-dye polluted waters as a source for selecting chromate-reducing yeasts through Cr(VI)-enriched microcosms
(Elsevier Sci, 2013-01)
Chromate-resistant microorganisms able to reduce toxic Cr(VI) into insoluble Cr(III) are seen as prom- ising candidates for alleviating Cr(VI)-contamination. In this study, chromate-reducing yeasts could be isolated from ...
Utilização de catalisadores sintéticos híbridos (nanofolhas de titânio com pozzolana e caulim com diferentes polissiloxanos) e resíduo industrial siderúrgico (carepa) para a redução fotocatalítica de Cr(VI) em matriz aquosa
(2020)
A espécie de cromo hexavalente é altamente tóxica e cancerígena; por isso a redução de Cr(VI) a Cr(III) torna-se bastante relevante. Este trabalho apresenta um estudo sobre a aplicação de catalisadores de três fontes ...
Estudo de procedimentos analíticos para determinação de Cr(III) e Cr(VI) em amostras sólidas.
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Química - PPGQ, 2006-03-02)
The legislation is evolving towards the establishment of restrictions to the concentration of Cr(VI), the most toxic redox form of chromium, in solid materials. This aspect has stimulated the development of sample preparation ...
Nucleation and growth mechanisms of palladium, nanoflower-shaped, and its performance as electrocatalyst in the reduction of Cr(VI)
(Springer, 2019-08-24)
Palladium electrocrystallization on Ti film is studied through theoretical models of nucleation and growth. At the applied potential + 0.1 V, palladium electrodeposition followed a mechanism through these steps: adsorption, ...
Kinetic sorption of Cr(VI) into solvent impregnated porous microspheres
(Elsevier Science SA, 2008-03-01)
The sorption rates of Cr(VI) ion from acid chromate solutions with Aliquat 336 impregnated microspheres (MS) were examined. MS of polysulfone (PSf) and poly(styrene-acrylenitrile) (SAN) were prepared by phase inversion ...