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

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Vanessa Guimaraes (Author) Other; Manuel Azenha (Author) FCUP; Fernando Rocha (Author) Other; Fernando Silva (Author) FCUP; Iuliu Bobos (Author) FCUP

Journal

Title: Journal of Radioanalytical and Nuclear Chemistry

Vol. 303

Pages: 2243-2255

ISSN: 0236-5731

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 9 Citations

Scopus - 10 Citations

Scientific classification

CORDIS: Physical sciences

FOS: Natural sciences

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13