Publication:
pH and Particle Structure Effects on Silica Removal by Coagulation

Research Projects
Organizational Units
Journal Issue
Abstract
Coagulation is presented as an efficient alternative to reduce the silica content in effluents from recovered-paper mills that are intended to be recycled by a final reverse-osmosis (RO) step. Coagulation pretreatment by several polyaluminum chlorides (PACls) or FeCl3 was optimized prior to the RO process. PACls with low alumina content and high basicity achieved almost a 100 % removal of silica at pH 10.5. A good reduction of the silica content was attained without regulating the pH by adding one of these PACls. Silica removal was related to the structure of the produced clots in which cylindrical particles produced higher silica removal. All coagulants removed more than 50 % of the chemical oxygen demand (COD).
Description
This is the pre-peer reviewed version of the following article: Hermosilla, D., Ordóñez, R., Blanco, L., de la Fuente, E. and Blanco, Á. (2012), pH and Particle Structure Effects on Silica Removal by Coagulation. Chem. Eng. Technol., 35: 1632–1640. doi: 10.1002/ceat.201100527], which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1002/ceat.201100527/abstract.
Keywords
Citation
[1] J. A. Cotruvo, G. F. Craun, N. Hearne, Providing Safe Drinking Water in Small Systems: Technology, Operations and Economics, CRC Press, Boca Raton, FL 1999. [2] Low-Pressure Membrane Filtration for Pathogen Removal: Application, Implementation and Regulatory Issues (EPA 815- C-01-001), Environmental Protection Agency, Washington, DC 2001. [3] A. Bennet, Filtr. Sep. 1 2008, 45 (1), 14. [4] R. Sheikholeslami, S. Tan, Desalination 1999, 126 (1–3), 280. [5] M. Al-Ahmad, F. A. Abdul, A. Mutiri, A. Ubaisy, Desalination 2000, 132 (1–3), 173. [6] C. J. Gabelich, W. R. Chen, T. I. Yun, B. M. Coffey, I. H. Suffet, Desalination 2005, 180 (1–3), 307. [7] L. Ferguson, Tappi J. 1992, 75 (7), 75. [8] L. Ferguson, Tappi J. 1992, 75 (8), 49. [9] T. Ali, F. McLellan, J. Adiwinata, M. May, T. Evans, J. Pulp Pap. Sci. 1994, 20 (1), J3. [10] M. Mahagaonkar, P. Banham, K. Stack, Prog. Pap. Recycl. 1997, 6, 50. [11] A. Santos, B. Carre, A. Roring, in Proc. of Recycling Symp., Tappi Press, Atlanta 1996. [12] I. Mathur, in Proc. of Recycling Symp., Tappi Press, Atlanta 1994. [13] R. K. Iler, The Chemistry of Silica. Solubility, Polymerization, Colloid and Surface Properties and Biochemistry, Wiley-Interscience, New York 1979. [14] R. Sheikholeslami, S. Zhou, Desalination 2000, 132 (1–3), 337. [15] T. S. Huuha, T. A. Kurniawan, M. E. T. Sillanpää, Chem. Eng. J. 2010, 158, 584. [16] M. Luo, Z. Wang, Desalination 2001, 141 (1), 15. [17] P. F. Weng, Desalination 1995, 103 (1–2), 59. [18] M. Dietzel, Geochim. Cosmochim. Acta 2000, 64 (19), 3275.2 [19] T. Koo, Y. J. Lee, R. Sheikholeslami, Desalination 2001, 139 (1–3), 43. [20] C. W. Smith, Pilot Test Results Utilizing Polymeric Dispersants for Control of Silica, Water Soluble Polymers: Solution Properties and Application (Ed.: Z. Amjad), Plenum Press, New York 1998. [21] M. J. White, J. L. Masbate, Ultrapure Water 2001, 18 (7), 56. [22] I. S. Al-Mutaz, I. A. Al-Anezi, Conf. on Water Resources and Arid Environment, Riyadh, December 2004. [23] I. Bremere, M. Kennedy, P. Michel, R. van Emmerik, G.-J.Witkamp, J. Schippers, Desalination 1999, 124 (1–3), 51. [24] E. Zaganiaris, S. Doulut, L. Morino, React. Polym. 1992, 17 (1), 15. [25] A. M. Ben Sik Ali, B. Hamrouni, S. Bouguecha, M. Dhahbi, Desalination 2004, 167, 273. [26] Reverse Osmosis Membranes, Technical Manual, Filmtec Corp., Dow Chemical Company, Midland, MI 2005. [27] T. Asano, F. Burtun, H. Leverenz, R. Tsuchihashi, G. Tchobanoglous, Water Reuse: Issues, Technologies and Applications, 1st ed., Metcalf and Eddy, McGraw Hill, Palo Alto, CA 2007. [28] S. D. Faust, O. M. Aly, in Chemistry of Water Treatment (Eds: S. D. Faust, O. M. Aly), Butterworth Publishers, 1 Boston, MA 1983. [29] R. Y. Ning, Desalination 2002, 151 (1), 67. [30] R. Sheikholeslami, I. S. Al-Mutaz, T. Koo, A. Young, Desalination 2001, 139 (1– 3), 83. [31] H. Roque, Chemical Water Treatment: Principles and Practice, VHC Publishers Inc., New York 1996. [32] W. Bouguerra, M. Ben Sik Ali, B. Hamrouni, M. Dhahbi, Desalination 2007, 206 (1–3), 141. [33] E. El-Bestawy, I. El-Sokkary, H. Hussein, A. F. Abu Keela, J. Ind. Microbiol. Biotechnol. 2008, 35 (11), 1517. [34] Y. B. Zeng, C. Z. Yang, W.H. Pu, X. L. Zhang, Desalination 2007, 216 (1–3), 147. [35] M. R. Chang, D. J. Lee, Y. J. Lai, J. Environ. Manage. 2007, 85 (4), 1009. [36] A. E. Eaton, L. S. Clesceri, E. W. Rice, A. E. Greenberg, M. A. H. Franson, Standard Methods for the Examination of Water and Wastewater, American Public Health Association (APHA), American Water Works Association (AWWA), Water Environment Federation (WEF), USA 2005. [37] D. J. Pernitsky, J. K. Edzwald, Water Supply 2006, 55 (2), 121. [38] A. Blanco, E. Fuente, C. Negro, J. Tijero, Can. J. Chem. Eng. 2002, 80 (4), 734. [39] R. Miranda, A. Blanco, E. Fuente, C. Negro, Sep. Sci. Technol. 2008, 43 (14), 3732. [40] J. Brun, T. Delagoutte, B. Carre, Prog. Pap. Recycl. 2007, 17 (1), 12. [41] S.-H. Kim, J.-S. Yoon, S. Lee, Desalin. Water Treat. 2009, 10 (1–3), 95. [42] W. Stumm, C. R. O’Melia, J. AWWA 1968, 60 (5), 514. [43] A. Torra, F. Valero, J. L. Bisbal, J. F. Tous, Tecnología del Agua 1998, 177 (18), 58. [44] C. J. Gabelich, T. I. Yun, B. M. Coffey, I. H. Suffet, Desalination 2002, 150 (1), 15. [45] N. D. Tzoupanos, A. I. Zouboulis, C. A. Tsoleridis, Colloids Surf., A 2009, 342 (1–3), 30. [46] Law 10/1993, October 26 (Madrid Region Regulation, Spain), Liquid Effluents Dumping to the Integral Sanitation System, Madrid 1993. [47] C. Allegre, M. Maisseu, F. Charbit, P. Moulin, J. Hazard. Mater. 2004, 116 (1–2), 57.
Collections