Direct detection of calcium carbonate scaling via a pre-calcified sensitive area of a quartz crystal microbalance - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Desalination Année : 2014

Direct detection of calcium carbonate scaling via a pre-calcified sensitive area of a quartz crystal microbalance

Résumé

In an industrial cooling circuit supplied with raw river water, the scaling phenomenon can reduce cooling efficiency and even lead to the shutdown of the power plant. During the last twenty years, various methods have been developed in order to estimate the scaling propensity of natural waters, which involve the precipitation of calcium carbonate (CaCO3), the main component of scale. FCP (Fast Controlled Precipitation) is a nonelectrochemicalmethodwhich consists in CO2 degassing fromwater bymoderate stirring. FCP allows quantifying the scaling propensity of natural water. However, FCP is not well adapted in the case of waters with low scaling propensities, or for in situ measurements. In this study, a quartz crystal microbalance with a pre-calcified sensitive electrode surface or SQCM (Scaling Quartz Crystal Microbalance) was developed. The sensitive surface of this gravimetric sensor could be used as an adsorption layer for calcium carbonate nuclei present in water. Thus, the SQCM method is able to detect the phenomenon of scaling, even if the water does not precipitate, due to its high gravimetric sensitivity. Thismethod is described in details in this paper, and was successfully applied to evaluate the scaling propensity of synthetic waters. The SQCM could be used in situ to assess the efficiency of humic substances in synthetic water towards scaling.
Fichier principal
Vignette du fichier
Post-print_P1435.pdf (417.85 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-01079703 , version 1 (04-11-2014)

Identifiants

Citer

Yanjia Chao, Olivier Horner, Franck Hui, Jean Lédion, Hubert Perrot. Direct detection of calcium carbonate scaling via a pre-calcified sensitive area of a quartz crystal microbalance. Desalination, 2014, 352, pp.103-108. ⟨10.1016/j.desal.2014.08.004⟩. ⟨hal-01079703⟩
131 Consultations
593 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More