alexa The Leaching Kinetics of Nitrate in Soil Using Glass C
ISSN ONLINE(2319-8753)PRINT(2347-6710)

International Journal of Innovative Research in Science, Engineering and Technology
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Research Article

The Leaching Kinetics of Nitrate in Soil Using Glass Column Method

Anuj Kumar Garg1, A. K. Gupta2* and Ashu Rani3*
  1. Research scholar, Deptt. of Chemistry, SSV (PG) College, Hapur, (C.C.S.University, Meerut) U. P. India
  2. Associate Professor, Deptt. of Chemistry, SSV (PG) College, Hapur,(C.C.S.University, Meerut) U.P. India
  3. Professor, Department of Pure and Applied Chemistry, University of Kota, Rajasthan, India
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The leaching kinetics of nitrate (NO3 -) in agricultural (pH = 7.2) and non-agricultural soils (pH = 6.8) was studied using undisturbed glass columns method . The soils were taken from the agriculture field and barren land near Dheerkhera agricultural area, Hapur. The Sodium nitrate (NaNO3) is used as a source of NO3 -. Power form equations (LRobs = k1 [NO3 - ]i 2.91 for agricultural and (LRobs = k2 [NO3 - ]i 1.829 for non-agricultural soils have been derived for dependence of LRobs on leachable concentration of NO3 - present initially. The effects of pore volume, temperature, Ca hardness have been observed on leaching rate. Change in water filled porosity θ (cm3cm-3) of the column has been found to affect LRobs. The LRobs is found to increase with temperature in the range 30-50°C. Experimental data fitting on various kinetic models showed first order kinetic models and parabolic diffusion to be most suited for predicting leaching rates.


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