Effect of a static magnetic field on formaldehyde biodegradation in wastewater by activated sludge

Maria Łebkowska , Anna Rutkowska-Narożniak , Elżbieta Pajor , Zbigniew Pochanke

Abstract

The aim of this study was to determine the impact of a static magnetic field (MF) of 7 mT on formaldehyde (FA) biodegradation by activated sludge in synthetic wastewater. The MF had a positive effect on activated sludge biomass growth and dehydrogenase activity. The influence of the MF on the degradation process was observed with a FA concentration of 2400–2880 mg/l. Decreases in FA concentration and chemical oxygen demand (COD) were greater, by 30\% and 26\% respectively, than those in the control sample. At initial FA concentrations in raw wastewater of 2400 and 2880 mg/l, a decrease in the wastewater biodegradation efficiency was observed. This resulted in an increase of the ecotoxicity of the effluent to Daphnia magna. The value of the sludge biotic index (SBI) was dependent on the FA concentration in raw wastewater and the induction of the MF.
Author Maria Łebkowska (FEE / DB)
Maria Łebkowska,,
- Department of Biology
, Anna Rutkowska-Narożniak (FEE / DB)
Anna Rutkowska-Narożniak,,
- Department of Biology
, Elżbieta Pajor (FEE / DB)
Elżbieta Pajor,,
- Department of Biology
, Zbigniew Pochanke (FoEE / ITEEMIS)
Zbigniew Pochanke,,
- The Institute of the Theory of Electrical Engineering, Measurement and Information Systems
Journal seriesBioresource Technology, ISSN 0960-8524, (A 45 pkt)
Issue year2011
Vol102
No19
Pages8777-8782
Keywords in EnglishBiodegradation, Formaldehyde, Static magnetic field
ASJC Classification2311 Waste Management and Disposal; 2105 Renewable Energy, Sustainability and the Environment; 2700 General Medicine; 2305 Environmental Engineering; 1502 Bioengineering
DOIDOI:10.1016/j.biortech.2011.07.040
URL http://www.sciencedirect.com/science/article/pii/S0960852411009904
Languageen angielski
Score (nominal)45
Score sourcejournalList
Publication indicators Scopus Citations = 53; WoS Citations = 46; Scopus SNIP (Source Normalised Impact per Paper): 2011 = 2.516; WoS Impact Factor: 2011 = 4.98 (2) - 2011=5.352 (5)
Citation count*28 (2015-09-11)
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