Novel Pervaporation System for Recovery of Organics from Hazardous Waste StreamsEPA Contract Number: 68D50070
Title: Novel Pervaporation System for Recovery of Organics from Hazardous Waste Streams
Investigators: Ray, Rod
Small Business: Bend Research Inc.
EPA Contact: Manager, SBIR Program
Project Period: September 1, 1995 through March 1, 1996
Project Amount: $65,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1996) RFA Text | Recipients Lists
Research Category: Hazardous Waste/Remediation , SBIR - Waste , Small Business Innovation Research (SBIR)
Description:The U.S. chemical industry accounts for over 200 million tons/year of hazardous liquid waste containing organic chemicals. These waste streams are difficult to treat using conventional technologies such as carbon adsorption and steam stripping. Membrane processes -- particularly pervaporation -- offer energy and cost advantages over conventional techniques. However, current pervaporation membrane-module designs limit the driving force for organic removal, module materials are damaged by the organics, and module costs are high.
Bend Research is now pursuing development of a novel pervaporation module design for this application. A key component is a solvent-resistant pervaporation module that overcomes the drawbacks of current pervaporation modules. This low-cost module is the key element in an innovative system design for the production of dischargeable water while economically recovering a concentrated organic stream for further separation or direct re-use. Preliminary tests and modeling indicate that this system has operating advantages that will make it cost-effective for treatment of waste waters.
The Phase I goal is to demonstrate the feasibility of their approach by making and testing small-scale hollow-fiver pervaporation modules based on solvent-resistant materials. They will also perform parametric tests with theses modules in the new system design, identifying the operating conditions and parameters that maximize performance.