Effect of a static magnetic field of 7 mT on formaldehyde biodegradation in industrial wastewater from urea-formaldehyde resin production by activated sludge
Maria Łebkowska , Anna Rutkowska-Narożniak , Elżbieta Pajor
AbstractThe goal of this study was to assess the efficiency of treating industrial urea–formaldehyde wastewater by activated sludge in a static magnetic field (MF) of 7 mT and the efficiency of treating the wastewater in a bioreactor not exposed to an MF. Exposure to the MF increased formaldehyde (FA) removal from industrial wastewater with an FA concentration of 1600 mg/l by 20%. The MF had also a positive effect on the efficiency of chemical oxygen demand (COD) removal, and bacteria and activated sludge biomass growth, especially when the COD loading increased rapidly. Industrial wastewater may contain up to 13000 mg FA/l. Therefore, its treatment can require the application of more than one method to ensure that the final FA concentration will be within the permissible limit. The application of an MF to enhance the biological processes may be favourable solution to this problem.
|Journal series||Bioresource Technology, ISSN 0960-8524|
|Keywords in English||magnetic field, activated sludge, formaldehyde|
|ASJC Classification||; ; ; ;|
|Score|| = 45.0, 18-12-2019, ArticleFromJournal|
= 45.0, 18-12-2019, ArticleFromJournal
|Publication indicators||= 23; = 25; : 2013 = 2.467; : 2013 = 5.039 (2) - 2013=5.6 (5)|
|Citation count*||7 (2015-09-11)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.