DEAP26-06NT03837

Goal
The goals of the University Cooperative Research Center are to perform industrially relevant research to address the technology needs of surfactant-polymer systems. These environmentally benign surfactants are to be developed as more efficient surface-active reagents with specific applications for the industry.

Performer
Columbia University, New York City, NY

Results
Since the inception of the center, numerous publications have been generated. Technology transfer is one of the most important products. There is a Web site for this project (http://www.columbia.edu/cu/iucrc).

Benefits
The development and characterization of new surfactants will enhance the petroleum industry?s ability to economically recover oil remaining in mature fields using enhanced oil recovery (EOR) applications. This will help to increase the volume of oil produced from domestic reservoirs and reduce the level of imports required to meet the energy demands of a growing economy.

Background
The center was established in 1998. Detailed structure-property assessment of several classes of surface-active molecules is a major activity of the center. The focus is on design, development and characterization of solution and interfacial behavior of specialty surfactants. The aim is to develop and characterize these novel surfactants for industrial applications.

Summary
The study requires simultaneous investigation of the interaction of individual components in bulk solution as well as the interface that is in contact with it and will use a multi-pronged approach involving:

• Conventional techniques for measuring adsorption/desorption isotherms, surface tension, zeta potential, wettability, and heat adsorption.
• Advanced spectroscopic (fluorescence, electron spin resonance and nuclear magnetic resonance) techniques for probing the micro- and nano-characteristics of the adsorbed layer. Certain novel surfactant and surfactant mixtures as well as their mode of mixing will be investigated for their ability to lower oil-water interfacial tension with minimal adsorption (or loss) on reservoir minerals.

Current Status (July 2007)
DOE is no longer a member of the consortium due to budget priorities. This cutting-edge research includes synthesizing nano-structures of aggregates of mixed surfactants in solutions and at solid/liquid interfaces. Funding to continue as a consortium member has not been identified.

Funding
The project was awarded via purchase order for 2006. As of July 2007, no funding is available for 2007 membership.

Project Start: July 31, 2006
Project End: July 31, 2007

Anticipated DOE Contribution: $25,000
Performer Contribution: $425,000 (94 percent of total)

Contact Information
NETL ? Betty Felber (betty.felber@netl.doe.gov or 918-699-2031)
Columbia U. ? P. Somasundaran (ps24@columbia.edu or 212-854-2926)

Publications
Lu, Shaohua, Ph. D. dissertation, Columbia University, February 2007.

Bergna, H.E. and Roberts, W.O., ?Adsorption of surfactants and polymers on silica,? (with Lei Zhang), Chapter in Colloidal Silica: Fundamentals and Applications, Eds. pp. 531-534 (2006).

Somasundaran, P., Krishnakumar, S. and Mehta, Somil C., ?A New Model to Describe the Sorption of Surfactants on Solids in Non-Aqueous Media,? Journal of Colloid and Interface Science, 292, pp. 373-380 (2005).