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Evaluation of the freeze-thaw/evaporation process for the treatment of produced waters. Quarterly technical progress report, January 1, 1995--March 31, 1995

Description: The objectives of this project are related to the development of a commercially-economic natural freeze-thaw/evaporation process for the treatment and purification of water produced in conjunction with oil and gas. Progress is reported on laboratory scale process evaluation and field demonstration of the process.
Date: April 1, 1995
Creator: Boysen, J. & Morotti, J.
Partner: UNT Libraries Government Documents Department

Overview of village scale, renewable energy powered desalination

Description: An overview of desalination technologies is presented, focusing on those technologies appropriate for use in remote villages, and how they can be powered using renewable energy. Technologies are compared on the basis of capital cost, lifecycle cost, operations and maintenance complexity, and energy requirements. Conclusions on the appropriateness of different technologies are drawn, and recommendations for future research are given.
Date: April 1, 1997
Creator: Thomas, K.E.
Partner: UNT Libraries Government Documents Department

Investigation of freeze concentration as a process for industrial energy conservation in black liquor, acetic acid, and citrus juice applications. Final report

Description: One of the largest consumers of energy in industrial processing is the equipment that concentrates weak aqueous solutions to stronger more sellable or reusable concentrations. The technical and economic feasibility of applying freeze concentration (that is, crystallization and removal from solution of pure solvent - water) as an alternative to heat evaporation (or distillation) to three industrial applications is established. For each of the applications - pulp mill black liquor concentration, acetic acid recovery and orange juice concentration - the economic analyses indicate that the energy savings achievable by freezing justify the respective capital investments with pay out periods of generally one to three years. Past freeze concentration operations have been in the 10,000 to 100,000 gallons per day range for sea water desalination. Research and development work will be required to adapt this work to the three industrial applications.
Date: July 1, 1979
Partner: UNT Libraries Government Documents Department