Chế tạo vật liệu hấp phụ asen từ chitin bằng kỹ thuật polyme hóa ghép bức xạ.

Abstract

Chitin with deactivation degree about 30-40% was irradiated up to dose of 28 kGy. Grafting 2,3-epoxypropyl methacrylate (EPMA) onto peroxidized chitin (EPMA-g-chitin) has been carried out at 80^oC. The grafting was confirmed by Fourier transform infrared spectroscopy (IR) and scanning electron microscopy (SEM). The grafting degree was found to be dependent on the pre-irradiation dose and leveled off above 20 kGy. EPMA-g-chitin was treated with phosphoric acid (H₃PO₄) to open epoxy rings. Arsenic adsorption from solutions of Arsenate (Na₂HAsO₄) and groundwater samples onto phosphonated  EPMA-g-chitin has been investigated.