In the present research. the optimum exploitation procedure of the agricultural waste was conducted reaching to zero residue level (ZRL). This aim was fulfilled via two steps. The first one was the removing of nitrogen from simulated synthetic aqueous solutions (SSAS) by using an agricultural waste (which is Iraqi rice husk. https://www.animationbengal.com/?w=top-sale-napoleon-perdis-the-one-concealer-on-sale-great-pick