DISTRIBUTION OF SOLUTES NO3 - E Ca IN SOIL COLUMNS WITH VINASSE

Abstract

Simulation models can provide a better understanding of the processes occurring in the soil displacement relative to solutes, and is applicable to research tools to minimize impacts on the environment. Thus, this study aimed to determine the retardation factors, diffusive-dispersive coefficients involved in the transport and distribution of vinasse effluent curves for the ions Calcium and Nitrate in soil columns. The Alfisol was collected in the rural municipality of Piracicaba-SP, soil samples were collected at 0-0.20 m depth. For the manufacture of columns was used PVC tubing 0.25 m long and 0.05 cm in diameter, wire mesh, and fast filter paper at one end, fastened by a cap bottomless PVC screw. The volumes of 10 mL were collected, defined in terms of pore volume (related to the porosity of the soil, taken generally around 50%) and the amount required to be performed the analysis of chemical components NO3 (nitrate) and Ca (calcium). We used the computer program to calculate the DISP parameters of solute transport in soil miscible fluid displacement. The transport parameters showed the positive effects of adsorption and calcium ion present in the shift vinasse. For the nitrate ion, despite the breakthrough curve not have adjusted the parameters indicate low adsorption to soil may be moved to greater depths.