Analysis and simulation of monodispersed, nanostructured calcite obtained in a controlled multiphase process

Katarzyna Majerczak , Paweł Gierycz

Abstract

In the presented experiments the carbonation process in multiphase system was carried out using the reactor with rotating discs. Calcite was produced by controlled fast precipitation through gaseous carbon dioxide adsorption in calcium hydroxide slurry with the constant discus revolution speed rate equal to 120 r min1 . Initial concentration and volume of the slurry was equal to 23 mM l1 or 54 mM l1 and 1 l or 2 l, respectively. The size of monodispersed single crystals precipitated in the aqueous solution was strongly dependent on the process parameters and varied (scanning electron microscope pictures, ImageJ Programme calculation) from 90 nm to 320 nm. To explain the way of single calcite crystal nucleation and growth the simulation of the crystals formation has been performed. This simulation bases on the new model, which takes into account kinetics of the multiphase reaction, crystals nucleation and their growth. Crystal morphology data obtained during the precipitation process have been compared with the model simulation results. The internally consistent model very well describes formation of the calcite nanoparticles and can be used and recommended for accurate calculation of the particle and aggregates size as well as their distribution in the reactor.
Author Katarzyna Majerczak WIChiP
Katarzyna Majerczak,,
- Faculty of Chemical and Process Engineering
, Paweł Gierycz ZPR
Paweł Gierycz,,
- Department of Separation Processes
Journal seriesNanomaterials and Nanotechnology, ISSN 1847-9804
Issue year2016
Vol6
Pages1-9
Publication size in sheets0.5
Keywords in Englishnanostructured material, computer simulation, gas–liquid precipitation, calcium compounds
DOIDOI:10.1177/1847980416675127
URL http://nax.sagepub.com/content/6/1847980416675127.full.pdf+html
Languageen angielski
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Score (nominal)20
ScoreMinisterial score = 20.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 20.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 1.536 (2) - 2016=1.756 (5)
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