Back to Search
Start Over
Electrochemical phosphates removal using iron and aluminium electrodes
- Source :
- Chemical Engineering Journal. 172:137-143
- Publication Year :
- 2011
- Publisher :
- Elsevier BV, 2011.
-
Abstract
- In the present work, the removal of phosphates from waters is studied through electrocoagulation using iron and aluminium electrodes. This technology is an alternative to the conventional method of coagulation, which leads to the complete removal of phosphates below the detectable limits of ionic chromatography (0.1 mg dm −3 ). The effect of the current density using both electrodes is also studied. The results show that the pH increases with the current density. In addition, a mechanistic model is proposed for phosphate removal that considers the solubility of iron, aluminium and phosphate species, and the zeta potential values. In the case of aluminium electrodes, the coexistence of both direct precipitation and adsorption onto metal is observed, whereas in the case of iron electrodes, the adsorption mechanism is less effective.
- Subjects :
- Precipitation (chemistry)
General Chemical Engineering
Inorganic chemistry
chemistry.chemical_element
General Chemistry
Phosphate
Electrochemistry
Industrial and Manufacturing Engineering
Metal
chemistry.chemical_compound
Adsorption
chemistry
Aluminium
visual_art
visual_art.visual_art_medium
Zeta potential
Environmental Chemistry
Solubility
Subjects
Details
- ISSN :
- 13858947
- Volume :
- 172
- Database :
- OpenAIRE
- Journal :
- Chemical Engineering Journal
- Accession number :
- edsair.doi...........3e2638a2fb8e76ad1df6aa0355640112