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Nitrogen and Phosphorus Recoveries from Anaerobic Digester Supernatant Using Seawater as Magnesium Source for Struvite Formation
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 Title & Authors
Nitrogen and Phosphorus Recoveries from Anaerobic Digester Supernatant Using Seawater as Magnesium Source for Struvite Formation
Kim, Yong-Beom; Ahn, Johng-Hwa;
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 Abstract
This study was performed to evaluate the effect of pH (8-12) and molar ratio of magnesium and phosphate () (0.6-1.4) on struvite crystallization of anaerobic digester supernatant using seawater as magnesium source. pH range of 9-10 is favorable for ammonium and phosphate recoveries. The recovery efficiency of ammonium was highest at of 1.0 and pH 10. On the other hand, high phosphate recovery efficiency (> 99%) was achieved at () of 1.4 and pH 10. The results demonstrated that seawater can be considered as low-cost magnesium source to recover phosphorus from anaerobic digester supernatant.
 Keywords
Anaerobic digester supernatant;Nitrogen recovery;Phosphorus recovery;Seawater;Struvite crystallization;
 Language
Korean
 Cited by
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