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In this review it will provides significant information about an environmental issue that concerning water pollution caused by heavy metals specifically copper and iron ions that release to the water flow. The section was started first with the general information of copper and iron contamination, the treatment method of removing copper and iron ions, basic concept of adsorption process towards copper and iron ions, preparation of adsorbent used for sorption process and modification polymer adsorbent that can be used as an adsorbent for aqueous phase adsorption and general information about the application of adsorbent for heavy metals adsorption. The general information about initiator used in grafting technique also discuss in first section of this review. The second section provides an information about Microcrystalline cellulose and the used of Microcrystalline cellulose in water treatment. Third section will present about an overview of modified polymer adsorbent between Acrylonitrile and Microcrystalline cellulose. [ABSTRACT FROM AUTHOR]