Removal of industrial cutting oil from oil emulsions by polymeric ultra- and microfiltration membranes

• Type: Article in International Scientific Journal
• Date: 2004

Authors

Adélio M. Mendes (Author) FEUP; Ana. D. Lopes (Author) Other; Peter Janknecht (Author) Other

Journal

Title: Environmental Science & Technology

Vol. 38 No. 18

Pages: 4878-4883

ISSN: 0013-936X

Publisher: American Chemical Society

Indexing

ISI Web of Knowledge - 37 Citations

ISI Web of Science

Scopus - 37 Citations

Scientific classification

CORDIS: Technological sciences > Technology

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-000-8HQ

DOI: 10.1021/es0348243

Abstract (EN): The utilization of micro- and ultrafiltration with polymeric membranes for treatment of industrial cutting oil emulsion was investigated. The performance of 14 different membranes with pore sizes in the range of 1-800 nm, representing 8 different materials and varying hydrophobicity, was determined experimentally. Membrane permeances between 1.6 and 939 L m(-2) h(-1) bar(-1) have been observed for the different samples as well as oil rejections between 3.42% and 99.99%. Membrane pore size and contact angle showed little influence on both values, while an interesting correlation is displayed to the individual membranes' capillary pressures. A possible explanation for this phenomenon is suggested based on the formation of oil films on the membrane surface. From the investigated membranes, the best-suited one for cutting oil treatment was selected and subjected to further experiments. The effect of process temperatures between 22 and 43 degreesC and of feed oil concentrations between 0 and 20 vol % on the removal performance was determined. The results correspond to the explanation suggested previously.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6