Table 3 First-order kinetics of the rate model for pollutants in soil.

From: Phytoremediation of pollutants in oil-contaminated soils by Alhagi camelorum: evaluation and modeling

Parameters

Treatments

First-order rate

K(day-1)

T1/2 (days)

R2

TPHs

Control

Y = −0.00026x–0.03728

0.00026

2665.4

0.1457

Plant

Y = −0.00457x–0.00166

0.00457

151.6

0.9721

Pb

Control

Y = 0.00012x–0.02202

0.00012

5775

0.0237

Plant

Y = −0.00364x + 0.09565

0.00364

190.4

0.8798

Cr

Control

Y = −0.00010x + 0.00138

0.00010

6930

0.8677

Plant

Y = −0.00414x + 0.02738

0.00414

167.4

0.9446

Ni

Control

Y = −0.00023x + 0.00501

0.00023

3013

0.7857

Plant

Y = −0.00393x–0.01316

0.00393

176.3

0.9645

Cd

Control

Y = −0.00026x + 0.01007

0.00026

2665.4

0.4713

Plant

Y = −0.00382x + 0.07818

0.00382

181.4

0.9455

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