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Cadmium removal by alginate beads in an air-lift reactor

100%

Wojnowska-Baryla I., Babuchowski A.

Biotechnologia

1997

issue 2

186-194

This paper presents the results of a research on cadmium removal by alginate beads from an aqueous solution in an air-lift reactor. The research focused on the ability of alginate to establish an unstable coupling between cadmium and ionogenic groups of this polysaccharide. Cadmium removal by the alginate beads took place in the air-lift reactor in two phases: sorption and desorption.. The efficiency of cadmium uptake by the alginate beads in the air-lift reactor was investigated in relation to the influent concentration of cadmium amounting to 5, 10, 50 mg Cd+2? dm 3 at flow rates of 2 and 4 L ? min-1. The efficiency varied from 48.5% to 91.9% depending on the sorption duration. Cadmium recovery from the alginate beads was achieved by reducing pH up to 1.8 by 0.5 M nitric acid. The efficiency of cadmium recovery amounted to 59.8 - 96.0 %.

Biodegradation of pollutions using an activated sludge immobilized inside the ceramic carrier

71%

Wojnowska-Baryla I., Babuchowski A., Zielinska M., Wojnowska-Bary?a I., Wojnowska-Bary?a I.

Biotechnologia

2001

issue 1

161-170

Carbon and nitrogen removal in dependence on the retention time and pollution loading was investigated using biomass immobilized inside macroporous ceramic carrier. Efficiency of carbon removal was 78%, nitrification rate ? 91,7%, denitrification rate ? 64,9%, when the technological parameter were: volumetric loading 5,9 g/dm3 d, hydraulic retention time 34 min, intrinsic recirculation 50 dm3/h.

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2 Biotechnologia

1 2001

1 1997

2 Babuchowski A.

2 Wojnowska-Baryla I.

1 Wojnowska-Bary?a I.

1 Zielinska M.

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Cadmium removal by alginate beads in an air-lift reactor

Biodegradation of pollutions using an activated sludge immobilized inside the ceramic carrier