Research Article
The Effect of Chloride and Sulfate Ions on the Adsorption of Cd2+ on Clay and Sandy Loam Egyptian Soils
Table 2
The Langmuir and Freundlich coefficients for the two examined soils under different conditions of salt matrix and concentration.
| | Soil type | Salt matrix | Salt matrix conc. | Langmuir parameters | | Freundlich parameters | | (µg/g) | (ml/µg) | (ml/µg) | |
| | Alluvial | Na2SO4 | 0.05 N | 544 | 0.232 | 2.05 | 16.51 | 1.270 | | 0.15 N | 448 | 0.242 | 1.69 | 14.09 | 1.297 | | NaCl | 0.05 N | 255 | 0.137 | 0.96 | 5.62
27.03 | 1.077
2.333 | | 0.15 N | 198 | 0.190 | 0.75 | 5.21
13.74 | 1.296
2.188 |
| | Calcareous | Na2SO4 | 0.05 N | 170 | 0.368 | 3.12 | 15.31 | 2.026 | | 0.15 N | 163 | 0.272 | 2.99 | 12.92 | 1.984 | | NaCl | 0.05 N | 116 | 0.294 | 2.13 | 5.63
17.93 | 1.591
2.494 | | 0.15 N | 85 | 0.330 | 1.56 | 5.63
16.58 | 1.732
3.778 |
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