This investigation is related to study the potential of Banana peel (BP) on the cyanide ion pollutant removal from wastewater using different design parameters by adsorption process at different design parameters. Results elucidate that the maximum removal efficiency was 95.65 % for cyanide ion from simulated synthetic aquatic solution (SSAS) and this efficiency was decreased with increasing initial concentration and flow rate while increased with increasing pH, absorbance material bed height and feeding temperature. Statistical model is achieved to find an expression combined all operating parameters with the removal efficiency for cyanide ion used in this paper in a general equation. The samples of BP remaining after using it in the removal of cyanide ion above from aqueous solutions aforementioned were predestined to investigate the utilization of it in useful method. One of these methods is used BP as a rodenticide directly without any pretreatment. The results show a good behaviour as rodenticide. By this way we can possess different benefits which are: remove the toxic cyanide ion polluted aqueous solution, get rid of agricultural waste BP, in the same time, and produce a rodenticide from remaining BP.