The aim of this research was investigating the application of processed Bentonite as low cost enriched absorbents, named Silagel ® , Hydrogel ® and Farzinal ® . Farzinal ® was typical bentonite, Hydrogel ® was processed bentonite with typical pH, Silagel ® was the processed bentonite with pH=4. The silage effluent is a liquid that exit from silo during the silage period. This liquid is a serious pollution source for the environment. The reason is that it has good situations for microorganism growth and growing of them lead to removing solute oxygen from the liquid faster than it’s incoming to the liquid. This due to high biological oxygen demand (BOD) for the silage effluent.The comparison of silage effluent BOD with the other sources of pollutions showed the importance of this investigation. The characteristics of the used absorbents were high ability of water absorption. Hydrogel swelling volume was about 40 fold of its dry mass. Particles sizes were in the range 10 to 35 nanometer by AFM. High cation exchange capacity obtained. Also the price of absorbents was very low. The corn forage had high moisture. Addition of absorbents was performed in four levels of 0.2, 0.25, 0.3, and 0.35 %w/w. Each level had 3 replicates and one of them was taken as control with no additives. Duration of the silage was 90 days and the effluent was measured in six steps. Due to low dry matter content, the amount of output effluent of the control silage was high and in about 108 g/kg of forage. The effluent reduction in comparison to control silage had significant difference. Entirely the reduction in was 46, 31 and 35 percent for Silagel, Farzinal and Hydrogel, respectively. Because of investigating the absorbents effect on the nutritional parameters of the silaged forage, it was necessary to determination of some factors including dry matter (by drying in the oven), acidity (by measuring the silage juice pH), ash (by electrical furnace), crude protein (by kjehldal method), ammonia (by kjehldal method without digestion step), ethanol and volatile fatty acids (by gas chromatography), lactic acid (with high performance liquid chromatography), and water soluble carbohydrates (by spectrophotometry) were measured. Minimum effect coused by addition of absorbents was seen in these factors. About Silagel there was not significant effect between it and control silage. In case of 0.35% Hydrogel the DM and Ash were increased. Ammonia nitrogen was decreased, these effects were positive. At last about the Farzinal, in the level of 0.2% the CP amount was higher than control silage, but in the level of 0.35% it was lower than control.Economical comparison between these absorbents and other absorbents that have similar performance showed clearly why these adsorbents should be used.