Abstract
Two laser-based instruments for carbon sequestration site monitoring have been developed and tested at a controlled carbon dioxide release facility. The first instrument uses a temperature tunable distributed feedback (DFB) diode laser capable of accessing the spectral region that contains three absorption lines and is used for aboveground atmospheric concentration measurements. The second instrument also uses a temperature tunable DFB diode laser capable of accessing the spectral region that contains five absorption lines for underground soil gas concentration measurements. The performance of these instruments for carbon sequestration site monitoring was studied using a newly developed controlled release facility. A 0.3 ton injection experiment was performed from 3–10 August 2007. The aboveground differential absorption instrument measured an average atmospheric concentration of 618 parts per million (ppm) over the injection site compared with an average background atmospheric concentration of demonstrating this instrument's capability for carbon sequestration site monitoring. The underground differential absorption instrument measured a soil gas concentration of 100,000 ppm during the injection, a factor of 25 greater than the measured background soil gas concentration of 4000 ppm demonstrating this instrument's capability for carbon sequestration site monitoring
© 2008 Optical Society of America
Full Article | PDF ArticleMore Like This
William Johnson, Kevin S. Repasky, and John L. Carlsten
Appl. Opt. 52(13) 2994-3003 (2013)
Justin A. Hogan, Joseph A. Shaw, Rick L. Lawrence, and Randal M. Larimer
Appl. Opt. 51(4) A59-A66 (2012)
Krishna K. Ayyalasomayajula, Fang Yu-Yueh, Jagdish P. Singh, Dustin L. McIntyre, and Jinesh Jain
Appl. Opt. 51(7) B149-B154 (2012)