Applicability of ferric(III) hydroxide as a phosphate-selective adsorbent for sewage treatment
Choon-Ki Na1, Ga-Yeon Park1, Hyun Ju Park2
1Department of Environmental Engineering, Mokpo National University, Jeonnam 58554, South Korea.
Abstract:
This research was undertaken to evaluate the usability of ferric(III) hydroxide for phosphate removal from sewage. Batch adsorption experiments, partly fixed bed column experiments, were conducted to study the influence of various factors, competing anions and contact time on the adsorption of phosphate on ferric(III) hydroxide. Processing ferric iron in the form of akaganeite (β-FeOOH) greatly increased the adsorption capacity for phosphate. The optimum phosphate removal was observed in the pHeq ≤ 6.0. All results from this study demonstrate the potential usability of β-FeOOH as a good phosphate-selective adsorbent for the phosphate removal system for a sewage treatment plant.
Related Concept Videos
Factors Affecting Solubility
Phosphate Buffer
Sodium dihydrogen phosphate does not fully dissociate in neutral or acidic solutions. When a strong base, such as sodium hydroxide (NaOH), is introduced into the solution, sodium dihydrogen phosphate...
Precipitation and Co-precipitation
Extraction: Advanced Methods
Extracorporeal Removal of Drugs: Hemoperfusion and Hemofiltration
Precipitation of Ions
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:


