Removal of cadmium from phosphoric acid in the presence of chloride ions using commercially available anion exchange resins
Authors:
- Marta Marszałek,
- Ewa Knapik,
- Marcin Piotrowski,
- Katarzyna Chruszcz-Lipska
Abstract
The production of cadmium-free phosphoric acid is crucial for the manufacturing of environmentally friendly fertilizers. One of the most promising methods for purification of phosphoric acid is ion exchange/adsorption. The article presents studies on the adsorption of cadmium from a 40 % phosphoric acid solution in the presence of chloride ions with the use of commercially available anion exchange resins. Five borderline cases were examined in a batch system, as well as kinetic studies were performed. The effect of chloride (0.2–2.2 wt%) and cadmium (5–2500 mg/kg) concentration on adsorption with the use of two best resins was studied in depth. The Amberlite PWA5 resin was selected for column tests and for experiments with wet process phosphoric acid simulated solution (WPPA-SS) to prove the concept of practical application of the resin. The obtained results indicate that PWA5 has a number of advantages over the resins tested so far, e.g., the resin is characterized by high cadmium adsorption efficiency (89 % in batch experiments with WPPA-SS and 95.5 % in column tests), the resin effectively adsorbs cadmium in the presence of low chloride concentrations (0.2–0.5 wt%), and the column with this resin can work properly even at high flow rates (40 BV/h).
- Record ID
- CUTa4ac98ce72e843dd947dafae952cd128
- Publication categories
- ;
- Author
- Journal series
- Journal of Industrial and Engineering Chemistry, ISSN 1226-086X, e-ISSN 1876-794X
- Issue year
- 2023
- Vol
- 118
- Pages
- 488-498
- Other elements of collation
- tab.; wykr.; Bibliografia (na s.) - 497-498; Bibliografia (liczba pozycji) - 51; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 118
- Keywords in English
- anion exchange resin, cadmium chloride complexes, cadmium removal, phosphoric acid, sorption kinetics, surface functional groups
- ASJC Classification
- DOI
- DOI:10.1016/j.jiec.2022.11.032 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/abs/pii/S1226086X22006451 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 100
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTa4ac98ce72e843dd947dafae952cd128/
- URN
urn:pkr-prod:CUTa4ac98ce72e843dd947dafae952cd128
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.