Ecofriendly Flocculation of Bentonite Suspensions by Two Anionic Polysaccharides: Carboxylated Chitosan (CC) and Sodium Carboxymethyl Starch (CMS-Na)

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Growing demand for ecofriendly technologies promotes the interest in investigation of natural flocculants and their derivatization aimed to dewatering of colloidal stable clay suspensions in a low energy consumption and environmentally friendly way. The present work used two negatively charged polysaccharides carboxylated chitosan (CC) and sodium carboxymethyl starch (CMS-Na) as flocculants and bentonite as colloidal particles system to study the influence of their charge characteristics on flocculation efficacy. Flocculation studies between negatively charged polysaccharides and negatively charged bentonite colloidal particles were systematically investigated through standard jar test procedure and laser light scattering measurements. It was found that the investigated negatively charged polysaccharides showed high flocculation performance for bentonite suspensions at less amount anionic polysaccharides doses but obvious deteriorative performance even antiflocculation process appeared at large amount anionic polysaccharides dosage.

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Advanced Materials Research (Volumes 955-959)

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321-325

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June 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] B.R. Sharma, N.C. Dhuldhoya and U.C. Merchant: J. Polym. Environ. Vol. 14 (2006), p.195.

Google Scholar

[2] J. Addai-Mensah: Powder Technol. Vol. 179 (2007), p.73.

Google Scholar

[3] B. Zhang, H. Su, X. Gu, X. Huang and H. Wang: Colloids Surf. A Vol. 436 (2013), p.443.

Google Scholar

[4] N. Levy, N. Garti and S. Magdassi: Colloids Surf. A Vol. 97 (1995), p.91.

Google Scholar

[5] H. Heller and R. Keren: Clay Clay Miner. Vol. 51 (2003), p.334.

Google Scholar

[6] T. Chatterjee, S. Chatterjee and S.H. Woo: Chem. Eng. J. Vol. 148 (2009), p.414.

Google Scholar

[7] E. Barbot, P. Dussouillez, J.Y. Bottero and P. Moulin: Chem. Eng. J. Vol. 156 (2010), p.83.

Google Scholar

[8] A.X. Fan, N.J. Turro and P. Somasundaran: Colloids Surf. A Vol. 162 (2000), p.141.

Google Scholar

[9] C. Ovenden and H.N. Xiao: Colloids Surf. A Vol. 197 (2002), p.225.

Google Scholar

[10] F. Renault, B. Sancey, P.M. Badot and G. Crini: Eur. Polym. J. Vol. 45 (2009), p.1337.

Google Scholar

[11] A.K. Verma, R.R. Dash and P. Bhunia: J. Environ. Manage. Vol. 93 (2012), p.154.

Google Scholar

[12] S. Pal, G. Sen, S. Ghosh and R.P. Singh: Carbohydr. Polym. Vol. 87 (2012), p.336.

Google Scholar

[13] Y.P. Wei, F. Cheng and H. Zheng: Carbohydr. Polym. Vol. 74 (2008), p.673.

Google Scholar

[14] M. Mihai and E.S. Dragan: Colloids Surf. A Vol. 346 (2009), p.39.

Google Scholar

[15] L. Ghimici, S. Morariu and M. Nichifor: Sep. Purif. Technol. Vol. 68 (2009), p.165.

Google Scholar

[16] Z. Yang, B. Yuan, X. Huang, J.Y. Zhou, J. Cai, H. Yang, A.M. Li and R. S. Cheng: Water Res. Vol. 46 (2012), p.107.

Google Scholar

[17] A.V. Svensson, L. Huang, E.S. Johnson, T. Nylander and L. Piculell: ACS Appl. Mat. Interfaces Vol. 1 (2009), p.2431.

Google Scholar

[18] L. Ghimici and M. Nichifor: Bioresource Technol. Vol. 101 (2010), p.8549.

Google Scholar

[19] H.J. Prado, M.C. Matulewicz, P.R. Bonelli and A.L. Cukierman: Desalination Vol. 281 (2011), p.100.

Google Scholar

[20] V. Singh, P. Kumar and R. Sanghi: Prog. Polym. Sci. Vol. 37 (2012), p.340.

Google Scholar

[21] L. Jfirnstrom, L. Lason and M. Rigdahl: Colloids Surf. A Vol. 104 (1995), p.191.

Google Scholar

[22] S. Bratskaya, S. Schwarz, T. Liebert and T. Heinze: Colloids Surf. A Vol. 254 (2005), p.75.

Google Scholar

[23] Y.X. Chen, S.Y. Liu and G.Y. Wang: Chem. Eng. J. Vol. 133 (2007), p.325.

Google Scholar

[24] H.Q. Su, S.H. Zeng, H. Dong, Y. Du, Y.L. Zhang and R.S. Hu: Appl. Clay Sci. Vol. 46 (2009), p.325.

Google Scholar

[25] J. Gregory and S. Barany: Adv. Colloid Interface Sci. Vol. 169 (2011), p.1.

Google Scholar

[26] S. Pal, S. Ghorai, M.K. Dash, S. Ghosh and G. Udayabhanu: J. Hazard. Mater. Vol. 192 (2011), p.1580.

Google Scholar

[27] L. Ghimici, M. Constantin and G. Fundueanu: J. Hazard. Mater. Vol. 181 (2010), p.351.

Google Scholar