Effect of pH on the rejection of inorganic salts and organic compound using nanofiltration membrane

Shijun Kim; Hiroaki Ozaki; Jeongsook Kim

Korean Journal of Chemical Engineering, Vol.23, No.1, 28-33, January, 2006

DOI10.1007/BF02705688 Export Citation

Effect of pH on the rejection of inorganic salts and organic compound using nanofiltration membrane

Shijun Kim^†, Hiroaki Ozaki¹, and Jeongsook Kim²

Ulsan Regional Innovation Agency, #758-2 Yenamdong, Buggu, Ulsan 683-804, Korea
¹Department of Civil Engineering, Osaka Sangyo University, #3-1-1 Nakagaito, Daito, Osaka 574-8530, Japan
²Busan Environmental Technology Center, #216 Daeyeondong, Namgu, Busan 608-737, Korea

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.Nanofiltration (NF) has recently received increased attention as a possible tertiary treatment process providing high rejection of solutes and high water flux rate. In this research, solute separation experiments using NF membranes were made with inorganic salts including heavy metal and organic compounds in different pH levels. The rejection of inorganics from feed solution was found to be dependent on the electric charge of membrane as well as the ionic radius and valence of ion. The divalent cation appeared to reduce the potential of negatively charged membrane to lower the rejection of ion. The results of organic compounds showed that the rejection could be estimated from the pKa value and molecular weight of organics, and the pH of the feed solution.

Keywords:Nanofiltration (NF);Inorganic Salts;Heavy Metal;Organic Compound;Zero Point of Charge;Wastewater Treatment

[References]

Baumgarten G, Seyfried CF, Water Sci. Technol., 34, 445 (1996)
Cartwright PS, From pilot to production-challenges of system design and scale-up, Int. Tech. Conf. on Memb. Sep. Proc., U.K., Paper C1, 65 (1989)
Childress AE, Elimelech M, Environ. Sci. Technol., 34(17), 3710 (2000)
Croll BT, J. IWEM, 6, 121 (1992)
Hodgson TD, Desalination, 8, 99 (1970)
Itoh M, Kunikane S, Kono S, Shinada T, J. Jpn. Water Works Assoc., 69(12), 27 (2000)
Jung CW, Kang LS, Korean J. Chem. Eng., 20(5), 855 (2003)
Kamiyama Y, Nitto Denko Tech. Report (in Japanese), 31, 408 (1993)
Kim S, Ozaki H, Terashima Y, Application of low pressure reverse osmosis to wastewater treatment, Proceeding of the 6th JSPS-VCC Seminar on Integrated Eng., 137 (1996)
Mulder M, Basic Principles of membrane technology, Kluwer Academic Publishers (2nd edition), Dordrecht, The Netherlands (1997)
Ratanatamskul C, Yamamoto K, Urase T, Ohgaki S, Water Sci. Technol., 34, 149 (1996)
Terashima Y, Ozaki H, Trans. of JSCE, Hydraulic and Sanitary Eng. Division, 14, 200 (1982)
Trebouet D, Schlumpf JP, Jaouen P, Maleriat JP, Quemeneur F, Environ. Technol., 20, 587 (1999)

[Referenced By]

[1] Baumgarten G, Seyfried CF, Water Sci. Technol., 34, 445 (1996)

[2] Cartwright PS, From pilot to production-challenges of system design and scale-up, Int. Tech. Conf. on Memb. Sep. Proc., U.K., Paper C1, 65 (1989)

[3] Childress AE, Elimelech M, Environ. Sci. Technol., 34(17), 3710 (2000)

[4] Croll BT, J. IWEM, 6, 121 (1992)

[5] Hodgson TD, Desalination, 8, 99 (1970)

[6] Itoh M, Kunikane S, Kono S, Shinada T, J. Jpn. Water Works Assoc., 69(12), 27 (2000)

[7] Jung CW, Kang LS, Korean J. Chem. Eng., 20(5), 855 (2003)

[8] Kamiyama Y, Nitto Denko Tech. Report (in Japanese), 31, 408 (1993)

[9] Kim S, Ozaki H, Terashima Y, Application of low pressure reverse osmosis to wastewater treatment, Proceeding of the 6th JSPS-VCC Seminar on Integrated Eng., 137 (1996)

[10] Mulder M, Basic Principles of membrane technology, Kluwer Academic Publishers (2nd edition), Dordrecht, The Netherlands (1997)

[11] Ratanatamskul C, Yamamoto K, Urase T, Ohgaki S, Water Sci. Technol., 34, 149 (1996)

[12] Terashima Y, Ozaki H, Trans. of JSCE, Hydraulic and Sanitary Eng. Division, 14, 200 (1982)

[13] Trebouet D, Schlumpf JP, Jaouen P, Maleriat JP, Quemeneur F, Environ. Technol., 20, 587 (1999)