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1

Carbon and nitrogen removal by biomass immobilized in ceramic carriers

100%

Wojnowska-Baryla I., Zielinska M.

Polish Journal of Environmental Studies

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2002

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tom 11

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nr 5

This experiment was conducted in a bioreactor with biomass immobilized in ceramic carriers. The influence of hydraulic retention time (HRT), carrier structure and intrinsic circulation rate on carbon and nitrogen removal from municipal wastewater were investigated. Two types of ceramic carriers were used at HRT 70, 60, 40, 30 min for carrier I, and 70, 60, 30, 15 min for carrier II, and at the circulation rate of 60, 40 and 20 dm3·h-1. The highest nitrogen removal efficiency was achieved in carrier II at 30 min of reaction. The carbon removal efficiency was similar for both carriers. An increase in internal circulation rate from 20 to 60 dm3·h-1 enhanced nitrogen removal efficiency from 33.0 to 47.2% and decreased in the production of surplus sludge in carrier II.

2

The biodegradation of brewery wastes in a two-stage immobilized system

84%

Wojnowska-Baryla I., Zielinska M., Babuchowski A., Debourg A.

Polish Journal of Environmental Studies

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2002

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tom 11

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nr 5

The investigations were made in a loop bioreactor, where biomass was immobilized in the ceramic carrier. The influence of the internal circulation rate on the biodegradation efficiency of brewery wastes by immobilized biomass and on production of surplus sludge was examined. The rates of the internal circulation were 12, 38, 50 dm3·h-1. The experiments were performed at constant loading rate of the carrier of 17.9 g·dm-3·d-1 and hydraulic retention time of 3 h. Increasing in the internal circulation rate from 12 to 50 dm3·h-1 caused enhancement of the removal rate from 0.40 to 0.48 gCOD·dm-3·h-1 and limitation of surplus sludge productivity from 0.67 to 0.27 g·g-1 COD removed. The biodegradation rate of brewery wastes in a two-stage immobilized system was determined. The hydraulic retention time in this two-stage immobilized system was 6 h, which was enough to get a COD below 150 mg·dm-3 in the effluent.

3

Lipolytic activity of biocatalysts obtained after immobilisation of fungal biomass of Rhizopus genus in Siran

59%

Bednarski W., Stasiewicz K., Kowalczyk M., Adamczak M.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2004

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tom 07

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nr 1

Ograniczanie wyników

2 Polish Journal of Environmental Studies

1 Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

2 Wojnowska-Baryla I.

2 Zielinska M.

1 Adamczak M.

1 Babuchowski A.

1 Bednarski W.

1 Debourg A.

1 Kowalczyk M.

1 Stasiewicz K.

1 2004

2 2002

Carbon and nitrogen removal by biomass immobilized in ceramic carriers

The biodegradation of brewery wastes in a two-stage immobilized system

Lipolytic activity of biocatalysts obtained after immobilisation of fungal biomass of Rhizopus genus in Siran