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

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DOI: 10.4236/as.2013.49B004    3,769 Downloads   5,305 Views   Citations

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.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Pang, Y. , Ding, Y. , Chen, J. and Gong, W. (2013) Synthesis and flocculation characteristics of cationic modified corncob: A novel polymeric flocculant. Agricultural Sciences, 4, 23-28. doi: 10.4236/as.2013.49B004.

References

[1] Bratby, J. (1980) Coagulation and flocculation. Uplands Press, London.
[2] Gregory, J. (1981) Chemistry and technology of water soluble polymers. Plenum Press, New York.
[3] 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
[4] Ibrahim, S.S. and Abdel-khalek, N.A. (1992) The action of different types of corn starch on the flocculation of phosphate slimes. Minerals Engineering, 5, 907-916. http://dx.doi.org/10.1016/0892-6875(92)90257-A
[5] Böhm, N. and Kulicke, W.M. (1997) Optimization of the use of polyelectrolytes for dewatering industrial sludges of various origins. Colloid and Polymer Science, 275, 73-81. http://dx.doi.org/10.1007/s003960050054
[6] Bolto, B.A. (1995) Soluble polymer in water purification. Progress in Polymer Science, 20, 987-1041. http://dx.doi.org/10.1016/0079-6700(95)00010-D
[7] Yang, W.Y., Qian, J.W. and Shen, Z.Q. (2004) A novel flocculant of Al(OH)3-polyacrylamide ionic hybrid. Journal of Colloid and Interface Science, 273, 400-405. http://dx.doi.org/10.1016/j.jcis.2004.02.002
[8] Schintu, M., Meloni, P. and Contu, A. (2000) Aluminum fractions in drinking water from reservoirs. Ecotoxicology and Environment Safety, 46, 29-33. http://dx.doi.org/10.1006/eesa.1999.1887
[9] Rath, S.K. and Singh, R.P. (1998) Grafted amylopectin: applications in flocculation. Colloids Surface A, 139, 129-135. http://dx.doi.org/10.1016/S0927-7757(98)00250-7
[10] Tripathy, T. and Singh, R.P. (2000) High performance flocculating agent based on partially hydrolysed sodium alginate-g-polyacrylamide. European Polymer Journal, 36, 1471-1476. http://dx.doi.org/10.1016/S0014-3057(99)00201-3
[11] Mishra, A., Srinivasan, R., Bajpai, M. and Dubey, R. (2004) Use of polyacrylamide-grafted plantago psyllium mucilage as a flocculant for treatment of textile wastewater. Colloid and Polymer Science, 282, 722-727. http://dx.doi.org/10.1007/s00396-003-1003-1
[12] Burr, R.C., Fanta, G.F., Doane, W.M. and Russel, C.R. (1975) Starch graft copolymers for water treatment. Starch, 27, 155-159. http://dx.doi.org/10.1002/star.19750270504
[13] Khalil, M.I. and Aly, A.A. (2002) Preparation and evaluation of some anionic starch derivatives as flocculants. Starch-Starke, 54, 132-139. http://dx.doi.org/10.1002/1521-379X(200204)54:3/4<132::AID-STAR132>3.0.CO;2-E
[14] Larsson, A. and Wall, S. (1998) Flocculation of cationic amylopectin starch and colloidal silicic acid. The effect of various kinds of salt. Colloids Surface A, 139, 259-270. http://dx.doi.org/10.1016/S0927-7757(98)00326-4
[15] Choong, J., Young, J.Y. and Wolfgang, H.H. (2005) Environmental effects and desorption characteristics on heavy metal removal using carboxylated alginic acid. Bioresource Technology, 96, 15-19. http://dx.doi.org/10.1016/j.biortech.2004.03.001
[16] Nayak, B.R. and Singh, R.P. (2001) Development of graft copolymer flocculating agents based on hydroxypropyl guar gum and acrylamide. Journal of Applied Polymer Science, 81, 1776-1785. http://dx.doi.org/10.1002/app.1610
[17] Ellis, H.A., Utah, S.I., Ogunrinde, A. and Ogedengbe, M.O. (1982) Preparation of some cationic starches as flocculants for water. Water Research, 16, 1433-1435. http://dx.doi.org/10.1016/0043-1354(82)90231-7
[18] Sheng, X.Q., Ding, Y.S. and Gong, W.M. (2002) Preparation and evaluation of cationic natural polymer flocculant. Journal of Dalian Maritime University, 28, 72-75. (in Chinese)
[19] Lv, X.X., Li, H.Y. and Huang, K.Y. (2004) Effect of different pretreatment methods on constituents of corn-cob. Journal of Chemical Industry of Forest Products, 2, 11- 13. (in Chinese)
[20] Ren, J.L., Sun, R.C., Liu, C.F., Chao, Z.Y. and Luo, W. (2006) Two-step preparation and thermal characterization of cationic 2-hydroxypropyltrimethylammonium chloride hemicellulose polymers from sugarcane bagasse. Polymer Degradation and Stability, 91, 2579-2587. http://dx.doi.org/10.1016/j.polymdegradstab.2006.05.008
[21] Ju, B.Z., Zhang, S.F. and Yang, J.Z. (2001) Progress in preparation of cationic starch using the dry process. Fine Chemicals, 18, 46-49. (in Chinese)

  
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