Loading...This is an advanced level soil chemistry course. Which comprises ion exchange phenomena: mechanisms, equations, adsorption isotherm, chemistry of waterlogged soil etc. The contents of the course directly related to soil chemical reactions, soil fertility and crop productivity.
The following contents of the 3 credit hours course is scheduled for a term:
| Sl. No. | Topics | Lecture
Nos. |
| 1) | General concept of ion exchange in soils | 2 |
| 2) | Activity and activity coefficients of ions, ionic strength | 2 |
| 3) | Surface reaction of soil colloids; adsorption of cations and anions, selectivity in ion adsorption | 2 |
| 4) | Diffuse double layer models of ion adsorption | 2 |
| 5) | Specific adsorption of cations and anions | 2 |
| First Mid Exam | 1 | |
| 6) | Thermodynamic approach to describe ion adsorption; major types of equations used to illustrate adsorption isotherms including the Langmuir, the Freundlich, the BET (Brunauer, Emmitt and Teller), and the Gibbs equations. | 4 |
| 7) | Application of Donnan equilibrium in ion exchange phenomena | 2 |
| 8) | Effect of dilution, exchange capacity and valence on cation exchange with special reference to implication regarding plant nutrients in soil | 3 |
| Second Mid Exam | 1 | |
| 9) | Phosphorus fixation | 3 |
| 10) | Chemistry of water logged soils | 5 |
| 11) | Micronutrient solubility | 2 |
| Final Examination | 1 |
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