Separation science and technology, 2018-05, Vol.53 (7), p.1088-1096
2018
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- Autor(en) / Beteiligte
- Titel
- Investigations of chromium (VI) ion sorption and reduction on strongly basic anion exchanger
- Ist Teil von
- Separation science and technology, 2018-05, Vol.53 (7), p.1088-1096
- Ort / Verlag
- Abingdon: Taylor & Francis
- Erscheinungsjahr
- 2018
- Quelle
- Taylor & Francis
- Beschreibungen/Notizen
- Removal of chromium(VI) ions and their reduction were studied on the anion exchanger Dowex PSR-2 in the pH range from 1.5 to 10. The parameters of Cr(VI) sorption process on the anion exchanger were calculated based on the most popular isotherm models such as: Freundlich, Langmuir, Temkin, and Dubinin-Radushkevich (D-R). The Langmuir isotherm was the most appropriate to describe Cr(VI) sorption. The Cr(VI) uptake by Dowex PSR-2 was found to follow the pseudo-second-order rate kinetics. Reduction of chromium(VI) in the pH range 1.5-10 was observed using the HPLC-ICP-MS (high-performance liquid chromatography-inductively coupled plasma-mass spectrometry) method. Oxidation of tri-n-butyl quaternary ammonium groups during the chromate (VI) removal process was observed.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 0149-6395eISSN: 1520-5754DOI: 10.1080/01496395.2017.1335323Titel-ID: cdi_proquest_journals_1994353172
- Format
- –
- Schlagworte
- Ammonium, Ammonium compounds, Anion exchanging, Anions, Chromate, Chromates, Chromium, High performance liquid chromatography, HPLC, HPLC-ICP-MS, Inductively coupled plasma mass spectrometry, ion exchange, Isotherms, Kinetics, Liquid chromatography, Mass spectrometry, Mass spectroscopy, Oxidation, pH effects, Quaternary, Reduction, Removal, Sorption, speciation, Uptake