Advances in Materials Science and Engineering (Jan 2023)

Preparation and Adsorption Performance on Congo Red of Sodium Alginate-Lanthanum Hydrogel Spheres

  • Dan Dang,
  • Mei Lei,
  • Xinyi Jiang,
  • Rui Song,
  • Gaimeng Yan,
  • Wenju Liu

DOI
https://doi.org/10.1155/2023/6020950
Journal volume & issue
Vol. 2023

Abstract

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Sodium alginate-lanthanum (SA/Lan) hydrogel spheres were prepared by ion cross-linking method to remove Congo Red (CR) in an aqueous solution. The adsorption performance was assessed through batch experiments. The experiment revealed that the highest adsorption capacity of SA/Lan for CR was achieved when the mass concentration of La3+ was 1%, the dosage was 2 g·L−1, the initial concentration of CR was 30 mg·L−1, the adsorption time was 60 min, and the reaction temperature was 25°C. The adsorption capacity of 10.81 mg·g−1 was the corresponding figure. The adsorption process was consistent with the Langmuir and pseudosecond-order models.