Eletrolytic cell to ionic monitoring of wastewater from cassava processing

Abstract

An electric system to measure the ionic solution of the soil solution, containing a electrolytic cell with gold electrodes and bridge resistor was developed and tested with wastewater to following concentration 1.25 x 10⁴ e 1.25 x 10^-2 mol L^-1 and following temperature 281 K and 297 K. It was adjusted a mathematic model equation according to Nernst to determine the cell potential in function of the ionic activity calculated by generalized Debye-Hückel model activity coefficient. The equipment reproduces the estimated tensions by Nernst equation, corrected by electric current in function of the ionic activity and the solution temperature.

Key words:
Wastewater; leaching; agriculture draining; Nernst equation