Geochemical Modeling of Trivalent Chromium Migration in Saline-Sodic Soil during Lasagna Process: Impact on Soil Physicochemical Properties

Table 8

Experimental validation of trivalent Cr remedial efficiency and soil pH using voltage gradient = 1 V/cm; average concentration = 44.15 mg/kg; and polarity reversal rate = 0 hr.

Response	Experimental result	Model prediction	Prediction error, %	90% CI*	90% CI	90% PI**	90% PI
				low	high	low	high
Cr, remedial efficiency	75.88	51.11	32.64	31.17	75.95	18.36	100.00
Residual soil, pH	12.3	12.6	2.35	11.7	13.5	10.8	14.0

∗Confidence interval.
**Prediction interval.