Table 2 |
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Rate constant, half time, and correlation coefficient (r^{2}) value | ||||||||
Aqueous solution (0.005 M) | Zeroth-order r^{2} | First-order r^{2} | Parabolic diffusion | Pseudo-second-order | ||||
(3,000 min) | (3,000 min) | r^{2} | k (×10^{−3}) | c | r^{2} | t_{1/2 }(min) k (×10^{−4}) | c | |
Na_{3}PO_{4} | 0.315 | 0.549 | 0.390 | 15.50 | 0.797 | 1.000 | 39 2.458 | 0.698 |
Na_{2}CO_{3} | 0.567 | 0.621 | 0.738 | 5.99 | 0.254 | 0.999 | 66 2.424 | 0.391 |
Na_{2}SO_{4} | 0.215 | 0.228 | 0.340 | 4.32 | 0.717 | 0.999 | 74 2.235 | 1.360 |
NaCl | 0.322 | 0.336 | 0.494 | 5.90 | 1.640 | 0.959 | 78 2.146 | 1.470 |
Obtained from the fitting of the data from 0 to 3,000 min of 3,4-D in the LDH interlayer into the aqueous solution containing various anions, phosphate, carbonate, sulfate, and chloride, by first-order, parabolic diffusion, and pseudo-second-order kinetics models.
Sheikh Mohd Ghazali et al.
Sheikh Mohd Ghazali et al. Nanoscale Research Letters 2013 8:362 doi:10.1186/1556-276X-8-362