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NUTRIENT
RECOVERY

Electrothermal Distillation of Ammonium

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OVERVIEW

  • Electrothermal distillation (Joule-Heating) volatilizes the N-NH   - ion from the liquid, converting it into a gas phase

  • Applying an electric field generates localized Joule heating at the surface, which enhances ammonia volatilization and drives it to the air side

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Ammonium Recovery Via Ion Exchange

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OVERVIEW

  • Adsorption: Selective N-NH   - capture via ion exchange using natural zeolite After screening different natural zeolites, Na-Chabazite was the best performing material  

  • Desorption using a NaCl brine solution to generate a high concentration of N-NH   in the liquid

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Ammonia Storage on Solid Carriers

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OVERVIEW

  • The volatilized ammonia gas can be stored on solid carriers adsorbents for more efficient transportation

  • Porous materials including zeolite, carbon based, and metal halides supported on silica are being tested 

Phosphorus Recovery as Calcium 
Phosphate from Electrolyzed Sludge

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OVERVIEW

  • Optimization of parameters such as reaction time and calcium-to-phosphorus (Ca/P) molar ratio to maximize phosphorus recovery from the electrolyzed sludge supernatant

  • Characterization of the recovered calcium phosphate solid (precipitate) to evaluate its potential as a slow-release phosphorus fertilizer

©2025 by CETI-LAB.

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