Study on the applicability of a natural geomaterial for mononitrophenol removal from simulated agricultural run-off water

Z. Yaneva, B. Koumanova, N. Georgieva
Abstract. The widespread use of pesticides and herbicides in agricultural areas worldwide has led to serious potential for pollution problems of the soils, surface and groundwaters in the adjacent terrains. The purpose of this study was to evaluate the ability of the geomaterial expanded perlite to remove xenobiotic organic compounds from polluted water introduced by agricultural and other activities. The model compound selected in this study was onitrophenol, a chemical commonly used in the manufacture of pesticides. The experimental equilibrium data were interpreted from Langmuir and Freundlich isotherm models. The applicability of both models was assessed on the basis of the calculated model parameters and correlation coefficients. The statistical significance of the results was tested on the basis of the SSE and RMSE values. The satisfactory efficiency (70 % removal) of the applied method proved its potential for large-scale applications.