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Aguilar, M.I., Sáez J., Lloréns, M., Soler, A., Ortuño, J.F., Meseguer, V. and Fuentes, A. (2005) Improvement of coagulation-flocculation process using anionic polyacrylamide as coagulant aid. Chemosphere, 58, 47-56. http://dx.doi.org/10.1016/j.chemosphere.2004.09.008

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• TITLE: Synthesis and flocculation characteristics of cationic modified corncob: A novel polymeric flocculant

  AUTHORS: Yanhua Pang, Yongsheng Ding, Jie Chen, Weimin Gong

  KEYWORDS: Flocculation; Corncob; Polymeric

  JOURNAL NAME: Agricultural Sciences, Vol.4 No.9B, November 6, 2013

  ABSTRACT: A novel organic polymeric flocculant was synthesized by grafting cationic etherifying monomer (3-chloro-2-hydroxypropyl) trimethyl ammonium chloride (CHPTAC) onto the backbone of corncob powder (CP,F≤ 30mm). The synthetic reaction between CP and CHPTAC was initiated by hydroxyl radical made from Fenton reagent(H2O2-FeSO4). The alkalization process andsynthetic reaction conditions were optimized byva- rying several parameters affecting grafting efficiency, such as NaOH dose, monomer concentration, reaction temperature and time and distilled water dose. The synthesized cationicflocculant was characterized by elemental analysis,Fourier-transform infrared spectrometer andscanning electron microscope techniques. Itwas concluded that the backbone of CP have been grafted cationic etherifying monomer. The flocculation characteristics in 0.25% (w/v) kaolin suspensions was compared with some of thecommercial flocculants available in markets,and the results demonstrated the synthesized cationic flocculation has superiority as a novel flocculant.