Accession Number : AD0775850

Title :   Evaluation of New Reverse Osmosis Membranes for the Separation of Toxic Compounds from Wastewater.

Descriptive Note : Annual summary rept. no. 1, 1 Sep 72-31 Aug 73,


Personal Author(s) : Chian,Edward S. K. ; Fang,Herbert H. P.

Report Date : SEP 1973

Pagination or Media Count : 67

Abstract : The purpose of this study was to evaluate the new reverse osmosis (RO) membranes for the removal of toxic organic compounds from wastewaters. Three groups of new RO membranes made of entirely different polymeric materials were investigated extensively. It was found that membranes made of cellulose acetate or its derivatives were unsatisfactory in terms of their separation of the model organic compounds, although salt rejections (NaCl) by these membranes were exceedingly high. Membranes made of aromatic polyamide showed good separation of most of the model compounds, their fluxes were, however, relatively low. Among all membrane evaluated, the cross-linked-polyethylenimine (PEI) ultrathin membrane, designated as NS-1 by its original of both permeation flux and solute separation. (Modified author abstract)

Descriptors :   *Reverse osmosis, *Membranes, *Filters, Cellulose acetates, Polyamide plastics, Polyethylene plastics, Performance(Engineering), Optimization, Waste treatment, Organic compounds

Subject Categories : Water Pollution and Control

Distribution Statement : APPROVED FOR PUBLIC RELEASE