Abstract
Preparation of Amidoxime Adsorbent by Radiation Induced Grafting of Acrylonitrile on Polyethylene Film and Its Application in Cr(VI) Removal
Highlights
In recent years, heavy metal pollution has become one of the most severe environmental problems and a great attention has been given to chromium because of its high toxicity to both the environment and living organisms.[1,2,3] Various industries and manufacturing plants such as tanneries, paints and pigments, electroplating, metal processing, wood preservatives, textile, dye industry, steel fabrication and canning use chromium for various applications and discharge large quantity into the environment.[4,5,6] In aquatic systems, chromium exists mainly as Cr(VI) and Cr(III) species which differ considerably in toxicity
The PE films were characterised by Fourier transform infrared (FTIR) ATR spectrophotometer (8400S Shimadzu Japan) in the 700–4000 cm−1 range. 1H nuclear magnetic resonance (NMR) spectra were measured at 25°C on Bruker Advance DPX 400 NMR instrument operating at 400 MHz in the Fourier transform mode
The graft yield was optimised with respect to monomer concentration and reaction time (Figure 2)
Summary
Heavy metal pollution has become one of the most severe environmental problems and a great attention has been given to chromium because of its high toxicity to both the environment and living organisms.[1,2,3] Various industries and manufacturing plants such as tanneries, paints and pigments, electroplating, metal processing, wood preservatives, textile, dye industry, steel fabrication and canning use chromium for various applications and discharge large quantity into the environment.[4,5,6] In aquatic systems, chromium exists mainly as Cr(VI) and Cr(III) species which differ considerably in toxicity. The toxic effects of Cr(VI) include skin rashes, nose bleeding, respiratory tract infection, suppressed immune system, hepatic diseases and lung cancer.[9,10] it is important to eliminate traces of chromium from drinking water, or to remove chromium from wastewaters before they are discharged into receiving bodies. Many researchers have focused attention on grafted polymers as alternative heavy metal adsorbent.. A number of researchers have studied single or binary monomer grafted PE film for heavy metal ion adsorption.[39,40,41,42] A polymeric adsorbent material based on PE was prepared by. Present study focuses on preparation of a new adsorbent by radiation induced grafting of acrylonitrile (AN) on PE films and its application in Cr(VI) removal. Desorption and reuse of the adsorbent film was investigated
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