Modeling of the dynamics adsorption of some hazardous elements from aqueous solution onto bentonite-calcium-alginate beads

Authors

Riham Abou-Lilah, Chemistry.Faculty of Science.Al-Azhar UniversityFollow
Nagwa Badway, Faculty of Science(girls)-Al-Azhar UniversityFollow
Azza Gamal, Faculty of Science(girls)-Al-Azhar UniversityFollow
Hoda Rizk, Hot Lab Centre-Egyptian Atomic Energy AuthorityFollow
Amal Ali, Hot Lab Centre-Egyptian Atomic Energy AuthorityFollow
Mostafa Elshorbagy, Hot Lab Centre-Egyption Atomic Energy AuthorityFollow

Corresponding Author

Abou-Lilah, Riham

Document Type

Original Article

Subject Areas

Chemistry

Keywords

Alginate; Column; gamma; modeling

Abstract

Encapsulation of bentonite-Ca-alginate was employed for discharge of Cs+, Sr2+, UO22+ and Co2+ from aquatic solution. Preferable pH for elimination of these ions was 5.5. For radiation stability, bentonite-Ca-alginate was investigated; a 60Co source was used to expose it to gamma radiation. Data obtained from (FT-IR) assessed radiation-induced effect on a stability of bentonite-Ca-alginate. Irradiated samples untill 100 kGy do not impair an absorption of an ions examined. In a column application, bentonite-Ca-alginate composite beads were examined for the discharge of these ions from multicomponent solution using fixed-bed column. Effect on column output of various parameters, like bed height, flow rate and initial inlet concentration were investigated. The column performance was 49, 46, 47 and 46.6% for Cs+, Sr2+, UO22+ and Co2+, respectively at flow rate of 0.5mL/min, 3cm bed depth and initial metal concentration, 50mg/L for each element. Thomas and Yoon-Nelson models identified a breakthrough curves, which successfully predict breakthrough adsorption curves.

How to Cite This Article

Abou-Lilah, Riham; Badway, Nagwa; Gamal, Azza; Rizk, Hoda; Ali, Amal; and Elshorbagy, Mostafa (2021) "Modeling of the dynamics adsorption of some hazardous elements from aqueous solution onto bentonite-calcium-alginate beads," Al-Azhar Bulletin of Science: Vol. 32: Iss. 1, Article 3.
DOI: https://doi.org/10.21608/absb.2021.51625.1094