Details

Autor(en) / Beteiligte

• Hajzler, J
• Novotny, R
• Opravil, T
• Ptacek, P

Titel

Possibilities of ammonium ions fixation into mixed binders

Ist Teil von

• IOP conference series. Materials Science and Engineering, 2019-07, Vol.583 (1), p.12001

Ort / Verlag

Bristol: IOP Publishing

Erscheinungsjahr

2019

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The purpose of this study is to analyze the usability of ammonium ions fixation in mixed binders with the addition of high temperature fly ash. The experiment used high-temperature fly ash from operations in which the secondary flue gas denitrification methods have been implemented, specifically by the method of the selective non-catalytic reduction, known as DeNOx. The fixation of ammonium ions was performed by the addition of sodium hexanitrocobaltate(III). The study examines the influence of addition of cobalt(III) complex compound on the release of ammonia into the environment during the mixing the mixed binder. The released ammonia was quantitatively captured into the acid and subsequently titrated. The effect of cobalt(III) complex compound on the rate of hydration and mechanical properties of the mixed binders was also studied. The influence on the environment in terms of leachability was observed.