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Document Type

Feature Article

Publication Date

Spring 5-1-2011

Publication Title

Washington University Undergraduate Research Digest: WUURD 6(2)


Peer Editor: Ashley Brosius; Faculty Mento: Young-Shin Jun

The effects of interfacial reactions of CO2-brine-clay minerals on geochem- ical and geophysical characteristics were studied. Phlogopite was used as a model clay mineral, and experiments were conducted over varying experimental times (3-241 hours). Conditions of 75°C and 75 atm were chosen to mimic geologic CO2 sequestration conditions. Multiple analytical methods were employed, including atomic force microscopy, scanning electron microscopy, transmission electron microscopy, inductively coupled plasma mass spectrometry, and x-ray diffraction to better describe the products of the reaction and their morphologies. Characterization of the products and their morphologies were analyzed. The study provides useful information that will aid in a better understanding of potential CO2-brine- rock reactions at geologic CO2 sequestration sites as well as the design of safer sequestration operations.

From the Washington University Undergraduate Research Digest: WUURD, Volume 6, Issue 2, Spring 2011. Published by the Office of Undergraduate Research, Joy Zalis Kiefer Director of Undergraduate Research and Assistant Dean in the College of Arts & Sciences; Kristin Sobotka, Editor.


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