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THE MECHANISM OF HALOGEN ATTACK ON COMPOSITE REVERSE-OSMOSISMEMBRANES

Award Information

Agency:
National Science Foundation
Branch:
N/A
Award ID:
2609
Program Year/Program:
1987 / SBIR
Agency Tracking Number:
2609
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
BEND RESEARCH, INC.
64550 RESEARCH RD BEND, OR 97701
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 2
Fiscal Year: 1987
Title: THE MECHANISM OF HALOGEN ATTACK ON COMPOSITE REVERSE-OSMOSISMEMBRANES
Agency: NSF
Contract: N/A
Award Amount: $212,000.00
 

Abstract:

MANY REVERSE-OSMOSIS MEMBRANES COMMERCIALLY AVAILABLE TODAY ARE MADE FROM POLYAMIDE OR POLYUREA MEMBRANES. THESE MEMBRANES GIVE HIGH SALT REJECTION AND HIGH WATER FLUX- YET ARE RAPIDLY DEGRADED WHEN EXPOSED TO TRACE LEVELS OF CHLORINE OR OTHER HALOGEN DISINFECTANTS USED FOR THE PRETREATMENT OF FEED WATERS. EFFORTS TO DEVELOP CHLORINE-RESISTANT MEMBRANES HAVE BEEN SLOW BECAUSE OF THE INCOMPLETE UNDERSTANDING OF THE INTERACTIONS BETWEEN CHLORINE AND THE MEMBRANES. BASED ON PREVIOUS WORK, WE HAVEFORMULATED A MODEL THAT DESCRIBES THE MECHANISMS OF HALOGEN ATTACK ON NITROGEN-CONTAINING MEMBRANES. THE OBJECTIVES OF THIS PROPOSED PROGRAM ARE TWO-FOLD: 1) TO VERIFY THE PROPOSED MECHANISMS BY STUDYING THE REACTIONS OF CHLORINE AND OTHER HALOGENS WITH SPECIFIC FUNCTIONAL GROUPS PRESENT IN POLYAMIDE AND POLYUREA MEMBRANES, AND 2) TO USE THIS INFORMATION TO DEVELOP HIGH-PERFORMANCE CHLORINE-RESISTANT MEMBRANES.

Principal Investigator:

R J Ray & S B Mccray
Co-principal Investigators
5033824100

Business Contact:

Small Business Information at Submission:

Bend Research Inc.
64550 Research Rd Bend, OR 97701

EIN/Tax ID:
DUNS: N/A
Number of Employees: N/A
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No