Abstract

CASCARET-CARMENATY, Dannis A; CALZADO-LAMELA, Orlindes  and  PEREZ-SILVA, Rosa M. Adsorption Capacity Determination of Chromium (VI) by Bacterial Biomass. Rev Cub Quim [online]. 2014, vol.26, n.3, pp. 215-224. ISSN 2224-5421.

The bacterial biomass adsorption technology is able to removing heavy metals from wastewater. In this paper the isolation and selection of bacterial strains residual galvanic plant was performed , four isolates were resistant to heavy metals, of which the AR-1 strain has the largest adsorptivity chromium (VI). Biosorption experiments showed that the biomass obtained from the AR-1 strain is able to remove 90,1 % of chromium (VI) in the standard solution studied to a pH value of 6 units and a mass of adsorbent for 0,6 g·dm^-3; however, in a real womb with 1,16 mg·dm^-3 is achieved the concentration decreasing to 0,23 mg·dm^-3, which corresponds to a removal percentage of 80,1 %.

Keywords : chromium; biosorption; waste waters; pollution; heavy metals.

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