Evaluatin of metabisulfite and a commercial stee wool for removing chromium (VI) from wastewater.

Efficiency of metabisulfite and a commercial steel wool as reducing agents in the removal of Cr(VI) from wastewaters was evaluated. Chromium( VI) was converted to Cr(III), precipitated with NaOH, and removed by filtration. A reduction of more than 1.0 x 10(5) and 4.0 x 10(5) fold in total Cr and the Cr(VI) concentrations, respectively, was observed by employing steel wool masses as low as 0.4420 g to 30-mL solutions of wastewater. Chromium(III) hydroxide obtained after the treatment was recycled and used as marker in cattle nutrition studies. The liquid residue obtained after the treatment was reused as precipitation agent replacing NaOH.

Bibliographic Details

Main Authors:	GROMBONI, C. F., DONATI, G. L, MATOS, W. O., NEVES, E. F. A., NOGUEIRA, A. R. de A., NOBREGA, J. A.
Other Authors:	CAIO F. GROMBONI, UFSCar/SÃO CARLOS, SP; GEORGE L. DONATI, UFSCar/SÃO CARLOS, SP; WLADIANA O. MATOS, UFSCar/SÃO CARLOS, SP; EDUARDO F. A. NEVES, UFSCar/SÃO CARLOS, SP; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; JOAQUIM A. NÓBREGA, UFSCar, SÃO CARLOS, SP.
Format:	Separatas biblioteca
Language:	pt_BR por
Published:	2010-10-04
Subjects:	Metabisulfite, Steel wood., wastewater treatment.,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/863457
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