- PII
- S30345391S0869573325043239-1
- DOI
- 10.7868/S3034539125043239
- Publication type
- Article
- Status
- Published
- Authors
- Volume/ Edition
- Volume / Issue number 4
- Pages
- 32-39
- Abstract
- This article studies the process of electrochemical removal of phosphate ions from wash solutions formed in aluminum production. A distinctive feature of these solutions is the presence, in addition to phosphate ions (up to 1.7 g/l), of a significant amount of aluminum up to 47 g/l in the form of [Al(OH)]. The effect of the operating parameters (initial pH, process time (t), initial concentration of phosphate ions, distance between electrodes and current density) of the electrocoagulation process using aluminum electrodes on the efficiency of phosphate ion removal was studied. It was shown that as a result of electrochemical dissolution of the aluminum anode and hydrolysis of the Al ion, an amorphous precipitate of aluminum hydroxide is formed in the solution. It was found that electrolysis of the solution with an Al anode at = 10 mA/sm leads to the removal of phosphate ions by over 90%. The electrocoagulation product was characterized by SEM/EDS analysis. The influence of possible impurities (SO, PO, F, Cl, VO) in washing solutions obtained during alunite processing on the degree of phosphate ion removal was estimated.
- Keywords
- электрокоагуляция алюминиевый электрод удаление фосфат-ионов алюминатный раствор промывные растворы
- Date of publication
- 30.05.2025
- Year of publication
- 2025
- Number of purchasers
- 0
- Views
- 22
References
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