A New Method For Removing Inorganic Colloidal Material Before Desalination By Reverse Osmosis

Author

M. A. El-Nokaly
L. Husueh-Ler
S. E. Friberg
H. Yasuda, Missouri University of Science and TechnologyFollow

Abstract

Sea-water was pretreated before desalination to remove suspended colloidal materials capable of fouling the reverse osmosis membrane. A simple model for sea-water was used in which silica and iron represented the inorganic colloids, and casein the organic colloids (namely the sea-water proteins). The suspended inorganic colloidal materials were precipitated by the coagulant property of hydrolyzed aluminum ions from an Al/Pt electrochemical cell. Titrimetric and spectrophotometric methods were used to analyze the concentration of the remaining ions after pretreatment. The silica content was reduced from 100ppm to 7ppm in the galvanic cell, and to 3.5ppm when an outside current was used. The corresponding reduction of iron concentration was from 2ppm to 0.05ppm. © 1985, Taylor & Francis Group, LLC. All rights reserved.

Recommended Citation

M. A. El-Nokaly et al., "A New Method For Removing Inorganic Colloidal Material Before Desalination By Reverse Osmosis," Journal of Dispersion Science and Technology, vol. 6, no. 4, pp. 413 - 435, Taylor and Francis Group; Taylor and Francis, Jan 1985.

The definitive version is available at https://doi.org/10.1080/01932698508943962

Department(s)

Chemistry

International Standard Serial Number (ISSN)

1532-2351; 0193-2691

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2023 Taylor and Francis Group; Taylor and Francis, All rights reserved.

Publication Date

01 Jan 1985