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http://dx.doi.org/10.4491/eer.2012.17.3.151

Rapid Removal of Green Algae by the Magnetic Method  

Lee, Huk-Hee (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Suh, Hyung-Sock (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Chang, Tae-Sun (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Publication Information
Environmental Engineering Research / v.17, no.3, 2012 , pp. 151-156 More about this Journal
Abstract
This research described the magnetic method for the rapid removal of green algae in water. We modified the pH, cation concentration, and magnetic powder concentration to discover the best removal performance. In order to rapidly remove green algae from water, we added magnetic powder and chitosan into algae water to make a magnetic substance and this was extracted by a strong neodymium magnet. The optimized conditions were pH of 6.5-7.5, chitosan concentration of 10 mg/L, and magnetite powder concentration of less than 0.05%. A higher removing rate was observed when a higher amount of magnetite or chitosan was used, but the total amounts of phosphorus or nitrogen were not decreased.
Keywords
Algae removal; Magnetite; Magnetic method; Rapid removal; Water treatment;
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