REMOVAL OF TOXIC COPPER IONS FROM CONTAMINATED WATER AND PREPARATION OF RODENTICIDE FROM THE RESIDUES ACCESSING TO ZERO RESIDUE LEVEL (ZRL)SUADAT MUSTAFA MOHAMMED AL-HERMIZY, NAGHAM SADDON IBRAHIM, MOHAMMED NSAIF ABBAS AND THEKRA ATTA IBRAHIMAbstract This paper is related to study the potential of Lemon Peel Residue (LPR) for removing copperions (Cu+2) from simulated synthesis aqueous solutions (SSAS) using various operating parameters by adsorption technique in adsorption unit. Results show that the removal efficiency was 97.82% for copper ions from SSAS and the efficiency was decreased with increasing of initial concentration, and SSAS flow rate while the removal efficiency increased with increasing pH, height of adsorbent material in adsorption bed and treatment time. The waste of lemon peel residue (remaining after adsorbed copper) was collected and sorted to investigate the utilization of it in useful method. One of suggested methods is to prepare a cheap rodenticide from these LPR waste without any further treatment and tested on laboratory rats. The results explain that the LPR adsorb copper ions showed a good behavior as rodenticide for Sprague dawley rats (Rattus rattus) and the calculated half lethal dose (LD50) was identical with the LD50 cited in literature. By this way it can obtain different benefits which are: remove the copper ions from polluted solution, get rid of agricultural waste lemon peel residue and in the same time, prepare a cheap and active rodenticide. It can discard more type of waste in a benefit, non-cost and eco-friendly method accessing to zero residue level (ZRL).
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