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Published on: May 16, 2022
Impact of a static magnetic field on biodegradation of wastewater compounds and bacteria recombination
Maria Łebkowska1, Anna Rutkowska-Narożniak2, Elżbieta Pajor2
1Faculty of Building Services, Hydro and Environmental Engineering, Biology Division, Warsaw University of Technology, Nowowiejska 20, 00-653, Warsaw, Poland. maria.lebkowska@is.pw.edu.pl.
Abstract:
The current study presents results concerning the effect of a static magnetic field (SMF) on synthetic wastewater biodegradation by activated sludge and on dehydrogenase activity of microorganisms of activated sludge. The highest process efficiency was obtained for a SMF of 0.0075 T among the tested magnetic flux density values of 0.005-0.14 T. Decrease in COD was 25% higher for the bioreactor exposed to SMF compared with control experiments. The positive effect of SMF 0.0075-0.0080 T was confirmed in experiments on the dehydrogenase activity of activated sludge. It was also shown that a SMF of 0.007 T increased p-nitroaniline removal from wastewater and influenced the recombination frequency in a streptomycin-resistant bacteria strain of Eschercihia coli.
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