Grds conferences icst and icbelsh (14)
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1 Estimation of Phenolphthalein- Alkalinity titration in Degreasing Process Changpingnga Chollatron Kittisupakorn Paisan with Statistic and Partial Least Squares regression method
description
This presentation was done in June 2014 by one of our participants in ICST and ICBELSH conferences.
Transcript of Grds conferences icst and icbelsh (14)
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Estimation of Phenolphthalein-Alkalinity titration in Degreasing
Process
Changpingnga Chollatron
Kittisupakorn Paisan
with Statistic and Partial Least Squares regression
method
Presentation Outline
• Background
• Objective
• Experiment
• Analysis– Finding Suitable Model
– Correlation Level Test
– Partial Least Squares Regression
• Conclusion
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Background
Monitoring cleanser
concentration in a
degreasing bath
can be indicated by
Phenolphthalein-alkalinity
(P-alkalinity) titration.
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Objective
This research focuses on estimation of
P-alkalinity value represented the
concentration of the cleanser solution in
the degreasing bath by using parameters
which are measurable with standard tools.
How To Work
Experiment Analysis Conclusion
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Experiment
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Sample From Degreasing bath
Independent Variables
pH MeasuringTemperature and
Conductivity Measuring
Weighing for density
calculating
Dependent Variable
P-Alkalinity titration
Observed Data
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Finding Suitable Model
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Correlation Level Test
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Partial Least Squares Regression
In this case, P-Alkalinity was estimated from 3
following independent variables
– Electro Conductivity (EC)
– Density (D)
– Temperature (T)
The maximum degree is 3 from suitable model and
correlation level.10
Result From PLS (Cubic Model)
R-square = 72.52%
Accuracy = 8.82%
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T
P-Alkalinity= B X
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3
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3
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-35936.5 1
87.6 EC
0.7 EC
-0.1 EC
12332.5 D
6249.3 D
4216.6 DB = , X =
270.0 T
1.1 T
-0.1 T
89.3 EC×D
-0.1 EC×T
289.9 D×T
-0.7 EC×D×T
Finding Suitable Model
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Result From PLS (Linear Model)
R-square = 72.34%
Accuracy = 8.62%13
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ECP-Alkalinity= -49149.9 82.7 42614.5 62.2
D
T
Conclusion
Model R-Square Accuracy
Linear Model 72.52% 8.62%
Cubic Model 72.34% 8.82%
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Therefore, the developed PLS models are
applicable to be used with the consideration of
specific cleansers: in this work, UniPrep®SP1
alkaline degreaser and UniPrep®BioActivator.
Thank you for your attention
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Why the P-Alkalinity titration employed to monitor the degreasing bath?
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P-Alkalinity titration is a
technique that recommended by
detergent provider to monitor the
degreasing bath.
Electro Conductivity
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Conductivity has been employed
because the components of commercial
cleanser (alkaline surfactant) contain
ions. Conductivity measuring was
performed with the same simulations of
degreasing bath as alkaline titration
