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51312-01089-A surface kinetic scaling model for CaCO3 on a stainless steel surface (316 L)

Product Number: 51312-01089-SG
ISBN: 01089 2012 CP
Author: Feth-Allah Setta
Publication Date: 2012
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$20.00
$20.00
Scaling is a major problem in water treatment plants and in oil industries. Indeed millions of dollars are spent each year to prevent the occurrence of scale. Calcium carbonate (CaCO3) and barium sulphate (BaSO4) are common types of scale encountered in these sectors. Scale predictions are typically based on thermodynamics and tend not to give a time-based quantification of surface scale growth. Recent work clearly demonstrated that scale deposition and precipitation are two different processes. The paper initially compares the kinetics of CaCO3 precipitation in the bulk and deposition on the surface of austenitic stainless steel (316L) at 24°C and 70°C under a controlled turbulent flow regime. Secondly precipitation and deposition data are combined to obtain the first kinetic surface model giving a scale thickness in millimeters per year as a function of the saturation index for CaCO3 scale and at these two temperatures. Experiments are performed using a Rotating Cylinder Electrode (RCE) device. There are several techniques carried out such as Scanning Electron Microscopy (SEM) and Inductively Coupled Plasma (ICP) to investigate the precipitation in the bulk and deposition of CaCO3 scale on the stainless steel surface.
Scaling is a major problem in water treatment plants and in oil industries. Indeed millions of dollars are spent each year to prevent the occurrence of scale. Calcium carbonate (CaCO3) and barium sulphate (BaSO4) are common types of scale encountered in these sectors. Scale predictions are typically based on thermodynamics and tend not to give a time-based quantification of surface scale growth. Recent work clearly demonstrated that scale deposition and precipitation are two different processes. The paper initially compares the kinetics of CaCO3 precipitation in the bulk and deposition on the surface of austenitic stainless steel (316L) at 24°C and 70°C under a controlled turbulent flow regime. Secondly precipitation and deposition data are combined to obtain the first kinetic surface model giving a scale thickness in millimeters per year as a function of the saturation index for CaCO3 scale and at these two temperatures. Experiments are performed using a Rotating Cylinder Electrode (RCE) device. There are several techniques carried out such as Scanning Electron Microscopy (SEM) and Inductively Coupled Plasma (ICP) to investigate the precipitation in the bulk and deposition of CaCO3 scale on the stainless steel surface.
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