New insights on antimony removal and recovery from water and wastewater using iron-coated cork granulates: Desorption on batch and fixed-bed column systems

• Tipo: Artigo em Revista Científica Internacional
• Data: 2024

Autores

Carneiro, MA (Autor) Outra; Silva, TA (Autor) Outra; Teixeira, PJS (Autor) Outra; Boaventura, RAR (Autor) Outra; Cidália Botelho (Autor) FEUP; Pintor, AMA (Autor) Outra

Revista

Título: Chemical Engineering Science

Vol. 296

ISSN: 0009-2509

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 1 Citação

Outras Informações

ID Authenticus: P-010-VYK

DOI: 10.1016/j.ces.2024.120207

Abstract (EN): This work investigated Sb adsorption-desorption using iron-coated cork granulates (ICG) in both batch and continuous modes to evaluate the materia & lacute;s adsorption and regeneration performance, as well as the possibility of antimony recovery. A fixed-bed column filled with ICG, demonstrated maximum adsorption capacities of 13 +/- 2 mg g(-1) and 10 +/- 1 mg g(-1) for Sb(III) and Sb(V), respectively, at pH 3. ICG was able to remove Sb within the WHO guideline of 20 mu g/L at pH 6. Among the different classes of eluents tested for Sb(V) desorption, the acids achieved the highest desorption rates - 81 +/- 9 % and 66 +/- 8 % for HCl 1 M and ascorbic acid 0.1 M, respectively. The desorption kinetics showed that HCl 1 M reached equilibrium in 4 h, but ascorbic acid 0.1 M took 16 h. This work presents an ecological emerging solution for antimony removal and recovery from water and wastewater.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10