SciELO - Scientific Electronic Library Online

 
vol.23 issue2Parameters optimization for enzymatic assays using experimental design author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Brazilian Journal of Chemical Engineering

Print version ISSN 0104-6632

Abstract

BARROS, A. J. Morais; PRASAD, S.; LEITE, V. Duarte  and  SOUZA, A. Gouveia. The process of biosorption of heavy metals in bioreactors loaded with sanitary sewage sludge. Braz. J. Chem. Eng. [online]. 2006, vol.23, n.2, pp. 153-162. ISSN 0104-6632.  http://dx.doi.org/10.1590/S0104-66322006000200001.

This work on the process of biosorption of nickel and chromium in an ascendant continuous-flow, fixed packed-bed bioreactor of sanitary sewage sludge was conducted in a search for solutions to the environmental problem caused by heavy metals. Analysis of the results demonstrated that the absorbent had an extraordinary capacity for biosorption of the heavy metals studied at about 9.0 pH of the effluent, with a removal percentage of over 90.0% for the two metals. Chemometric study results demonstrated that 20 days of the experimental system function were sufficient for achieving the maximum efficiency of sorption of the heavy metals studied by the sanitary sewage sludge employed.

Keywords : Heavy metals; Biosorption; Sanitary sewage sludge; Bioreactors.

        · text in English     · pdf in English