Industrial Water Treatment Process Technology by Pal Parimal

Author:Pal, Parimal
Language: eng
Format: epub
ISBN: 9780128103920
Publisher: Elsevier Ltd.
Published: 2017-03-01T16:00:00+00:00

Analysis of Model Performance

Error analysis can be done using a standard statistical method that consists of computation of the following parameters.

The root mean square error (RMSE) is calculated as:

where Ei=experimental value, Pi=predicted (model) value, and n=no of points analysis. The relative error (RE) is then calculated as:

where =mean of experimental data. Good model performance is indicated if R2>0.98 and RE<0.10. Table 6.2.9 shows typical model performance.

Table 6.2.9

RE and R2 value for volumetric flux, rejection estimated by the four NF membranes under different conditions [17]

NF1 NF2 NF3 NF20

RE R2 RE R2 RE R2 RE R2<

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