Influence of pH, concentration and ionic strength during batch and flow-through continuous stirred reactor experiments of Sr2+-adsorption onto montmorillonite

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Vanessa Guimaraes (Autor) Outra; Manuel Azenha (Autor) FCUP; Fernando Rocha (Autor) Outra; Fernando Silva (Autor) FCUP; Iuliu Bobos (Autor) FCUP

Revista

Título: Journal of Radioanalytical and Nuclear Chemistry

Vol. 303

Páginas: 2243-2255

ISSN: 0236-5731

Editora: Springer Nature

Indexação

ISI Web of Knowledge - 9 Citações

Scopus - 10 Citações

Classificação Científica

CORDIS: Ciências Físicas

FOS: Ciências exactas e naturais

Outras Informações

ID Authenticus: P-00A-9YZ

DOI: 10.1007/s10967-014-3709-6

Abstract (EN): Sorption/desorption experiments in batch and continous flow-through stirred reactor under different experimental conditions were carried out using montmorillonite (< 2 mu m clay fractions). The Sr2+ amount desorbed at pH 4 is only half of the amount desorbed at pH 8, revealing that the retention of Sr2+ onto montmorillonite was enhanced at pH 4. The largest adsorption value was obtained at pH 8.0 ([KNO3] = 10(-3) mol/L) with q (m) = 41.49 mg Sr2+/g from the Langmuir isotherm. The gradient of concentration acted as an increasing driving force since the amount of Sr2+ adsorbed increased as increasing of Sr2+ concentration during the flow-through experiments.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 13