Real-Time In Situ Carbon Dioxide Monitoring Network for Sensitive Subsurface Areas in Carbon Capture and Storage


(Left) Depiction of the multi-parameter system<br/>incorporating CO<sub>2</sub>, pH, salinity, temperature<br/>sensors, and RICO<sub>2</sub>M Net deployed in a highly<br/>fractured area within sources of drinking water;<br/>and (Right) depiction of the distributed sensor<br/>deployed in the vadose zone.
(Left) Depiction of the multi-parameter system
incorporating CO2, pH, salinity, temperature
sensors, and RICO2M Net deployed in a highly
fractured area within sources of drinking water;
and (Right) depiction of the distributed sensor
deployed in the vadose zone.
Intelligent Optical Systems, Inc.
Website:  Intelligent Optical Systems Inc.
Award Number:  FE0012706
Project Duration:  10/01/2013 – 06/30/2019
Total Award Value:  $2,880,593
DOE Share:  $1,758,112
Performer Share:  $1,122,481
Technology Area:  Monitoring, Verification, Accounting, and Assessment
Key Technology:  MVAA: Near Surface Monitoring
Location:  Torrance, California

Project Description

This project is developing a multi-parameter system for the highly sensitive and accurate detection of carbon dioxide in groundwater. The stand-alone system will include novel distributed fiber optic sensors for CO2, pH, and salinity, as well as a commercially available distributed sensor for temperature. The sensors will be fabricated by coating optical fibers with chemically-sensitive indicator-doped polymers, thus rendering the entire length of the optical fiber a sensor capable of covering large areas in distances of thousands of feet. The project involves developing two novel sensitive claddings for salinity and pH sensing. Once developed, optical cables sensitive to each parameter will be produced. Those cables will be combined with a CO2 sensitive cladded fiber as well as an off the shelf fiber optic temperature sensor to produce a real time monitoring network to be used for CO2 storage monitoring, verification, accounting (MVA), and assessment operations, which will be validated in the field.

Project Benefits

This project focuses on developing real-time near-surface monitoring capability for detecting possible CO2 leakage in groundwater. Better CO2 near-surface monitoring methods allow project developers to more confidently ensure that CO2 is permanently stored, and understand impacts on groundwater, should a leak occur and this improved monitoring will contribute to better storage technology thus reducing CO2 emissions to the atmosphere.

Contact Information

Federal Project Manager 
Joshua Hull:
Technology Manager 
Traci Rodosta:
Principal Investigator 
Jesus Delgado-Alonso:

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