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Electrodialytic Recovery of Ammonium and Phosphate Ions in Fertilizer Industry Wastewater by Using a Continuous-Flow Reactor
 
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Department of Environmental Engineering, Faculty of Civil, Environmental, and Geo-Engineering Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
 
 
Data publikacji: 01-06-2019
 
 
Autor do korespondencji
Arseto Yekti Bagastyo   

Department of Environmental Engineering, Faculty of Civil, Environmental, and Geo-Engineering Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
 
 
J. Ecol. Eng. 2019; 20(6):255-263
 
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STRESZCZENIE
Wastewater stream generated from fertilizer industries generally contains high concentrations of ammonium and phosphate ions. This stream offers an opportunity forthe electrodialytic process to treat and recover these concentrated nutrients before releasing to the environment. Therefore, this recent study aims to evaluate the performance of a continuous-flow electrodialysis reactor for ionic recovery of ammonium and phosphate. The results show that the pH and phosphate mass loading affected the overall performance of the reactor. Magnesium was added to the recovered ammonium and phosphate with the lowest concentration of impurity ions. The molar ratio of magnesium:ammonium:phosphate at 2.5:13:1 produced 57.3% of struvite (by mass) and 42.7% of other precipitate products, i.e., most likely fluorapatite and MgF2.
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