Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/201161
Type: Artigo de periódico
Title: New Methodology Based On Static Light Scattering Measurements For Evaluation Of Inhibitors For In Bulk Caco3 Crystallization.
Author: Sousa, Maria F B
Bertran, Celso A
Abstract: In the present work a new procedure for evaluation of scale inhibitor for calcium carbonate is proposed based on continuous measurement of particle size distribution by laser diffraction technique and simultaneous pH recording. From data obtained during real-time monitoring of the homogeneous nucleation and growth of CaCO3 particles formed in the bulk phase after the addition of carbonate ions to synthetic formation water (AF-W2), it was possible to evaluate the performance of four inhibitors classified in two groups: phosphonates (ethylenediamine tetramethylene phosphonic acid, EDTMP; diethylenetriamine pentamethylene phosphonic acid, DETPMP) and polymeric inhibitors (phosphino poly carboxylic acid, PPCA; polyvinyl sulfonate, PVS). The comparative bulk crystallization inhibition efficiency for the evaluated inhibitors, under the experimental conditions used in this work, increases in the following order: EDTMP<DETPMP<PVS≅PPCA. Moreover, this methodology allowed the deduction of the main mechanism of their inhibiting action: nucleation inhibition or crystal growth retardation.
Subject: Calcium Carbonate Scale
Homogeneous Crystallization
In Bulk Inhibition
Particle Size Distribution
Rights: fechado
Identifier DOI: 10.1016/j.jcis.2014.01.001
Address: http://www.ncbi.nlm.nih.gov/pubmed/24559700
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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