Adsorbent for Arsenic(V) Removal Synthesized by Radiation-Induced Graft Polymerization onto Nonwoven Cotton Fabric

Hiroyuki Hoshina, Makikatsu Takahashi, Noboru Kasai, Noriaki Seko

Environment and Industrial Materials Research Division, Quantum Beam Science Directorate.
Environment and Industrial Materials Research Division, Quantum Beam Science Directorate, Japan Atomic Energy Agency, Takasaki, Japan.
ERH Techno Research Co., Ltd., Takasaki, Japan.

DOI: 10.4236/ijoc.2012.23026                

Abstract

A fibrous adsorbent for arsenic (As) removal was synthesized with nonwoven cotton fabric as a trunk polymer. 2-hydroxyethyl methacrylate phosphoric acid monomer which composed of phosphoric acid mono (50%) and di (50%) ethyl methacrylate ester was introduced with radiation-induced graft polymerization onto nonwoven cotton fabric. The degree of grafting of 130% was obtained at irradiation dose of 20 kGy with 5% of monomer solution for 2 hours reaction time at 40?C reaction temperature. After the grafted material was contacted with 10 mmol/L of zirconium (Zr) solution at pH 1, 0.38 mmol/g of Zr was loaded on phosphoric units as a functional group for As(V) removal. The resulting adsorbent was evaluated by column mode adsorption with 1 mg/L of As(V) solution at various pH with space velocity 200 h–1. The maximum capacity of As(V) adsorption was 0.1 mmol/g at pH 2.

Keywords

Arsenic Removal; Cotton; Radiation-Induced Graft Polymerization; Phosphoric Acid; Zirconium

Conflicts of Interest

The authors declare no conflicts of interest.

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