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ABSTRACT This study was undertaken to evaluate the retention of Cu, Cr, Ni, Zn, and Cd under laboratory conditions from synthetic solution and electroplating wastes by vermicompost. A glass columnExpand
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An approach to understanding the deacetylation degree of chitosan
Abstract Chitin, a polysaccharide isolated from crustaceans, is a homopolymer composed of 2-acetamide-2-deoxy- d -glucopyranose. The proportion of d -glucosamine and N -acetyl- d -glucosamineExpand
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Hydrotalcite-TiO2 magnetic iron oxide intercalated with the anionic surfactant dodecylsulfate in the photocatalytic degradation of methylene blue dye.
The new magnetic photocatalysts HT/TiO2/Fe and HT-DS/TiO2/Fe, modified with the anionic surfactant sodium dodecylsulfate (DS) were successfully synthesized in this work. Titanium dioxide (anatase)Expand
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Preparation and evaluation of chitosan beads immobilized with Iron(III) for the removal of As(III) and As(V) from water
The crosslinked chitosan-Fe(III) (Ch-FeCL) adsorbent was developed using Fe(III) immobilized on chitosan beads. After drying, the beads presented a diameter of approximately 1 mm and are stable inExpand
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Concentrações de selênio em alimentos consumidos no Brasil
Objetivo. Determinar os teores de selenio em alimentos consumidos no Brasil. Metodos. O trabalho foi desenvolvido de 1993 a 1999. As amostras de alimentos foram coletadas no comercio varejista emExpand
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Preparation and evaluation of magnetic chitosan particles modified with ethylenediamine and Fe(III) for the removal of Cr(VI) from aqueous solutions
The adsorption of Cr(VI) in aqueous solution by magnetic particles of crosslinked chitosan-ethylenediamine-Fe(III) (MPCh-EDA-FeCL) was studied in a batch system. Fe3+ in the MPCh-EDA-FeCL permittedExpand
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Assessment of Water Systems for Contaminants from Domestic and Industrial Sewages
The State of Minas Gerais represents one of Brazil's most outstanding mining resources. The contamination of river waterfrom kaolin processing activities may be harmful to people inthe way of slowExpand
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Preparation and evaluation of hydrotalcite-iron oxide magnetic organocomposite intercalated with surfactants for cationic methylene blue dye removal
Abstract Cationic dye adsorption by hydrotalcite-iron oxide magnetic modified with dodecylsulfate (DS) and dodecylbenzenesulfonate (DSB) anionic surfactants was examined using methylene blue (MB) dyeExpand
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Mercury fractionation in stream sediments from the Quadrilátero Ferrífero gold mining region, Minas Gerais State, Brazil
The Iron Quadrangle (IQ) region, located in the state of Minas Gerais, has been the most important gold producing area in Brazil since the end of seventeenth century. The use of mercury for goldExpand
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Adsorção de arsênio(V) pelo compósito magnético hidrotalcita: óxido de ferro
In this work, hydrotalcite, a layered double hydroxide, had its adsorption and ion exchange properties combined with the magnetic properties of iron oxide to produce a magnetic adsorbent, HT-Fe. TheExpand
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