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  • Title: Microwave assisted synthesis of polyacrylamide grafted agar (Ag-g-PAM) and its application as flocculant for wastewater treatment.
    Author: Mishra S, Sen G, Rani GU, Sinha S.
    Journal: Int J Biol Macromol; 2011 Nov 01; 49(4):591-8. PubMed ID: 21704652.
    Abstract:
    Grafting of polyacrylamide (PAM) chains was performed onto the backbone of Agar by microwave assisted method, using microwave radiation in synergism with ceric ammonium nitrate (CAN) as the chemical free radical initiator. The intended grafting of the PAM chains were confirmed through intrinsic viscosity study, FTIR spectroscopy and elemental analysis (C, H, N, O & S). Further characterization of the grafted product was done in form of SEM morphology and TGA study. Flocculation efficacy of the synthesized graft copolymers was studied in kaolin suspension, through 'Jar test' procedure. Further, flocculation efficacy of the 'best grade' (as determined by 'jar test' in kaolin suspension) in wastewater was studied for possible application in reduction of pollutant load of wastewater.
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