Effective sensing approach for assessment and monitoring of in-situ biodegradation in a subsurface environment

Dong X. Li

doi:10.1117/12.339024

10 February 1999 Effective sensing approach for assessment and monitoring of in-situ biodegradation in a subsurface environment

Dong X. Li

Author Affiliations +

Proceedings Volume 3534, Environmental Monitoring and Remediation Technologies; (1999) https://doi.org/10.1117/12.339024
Event: Photonics East (ISAM, VVDC, IEMB), 1998, Boston, MA, United States

Abstract

Rapid assessment and monitoring of biological conditions in a subsurface environment is becoming more and more important as bioremediation approaches become widely used in environmental cleanup. Remediation monitoring is also more challenging for in-situ remedial approaches, such as bioventing, biosparging, or passive bioremediation, where conventional 'inlet' and 'outlet' monitoring can no longer be applied. A sensing approach using subsurface chemical sensors offers a cost- effective alternative for remediation monitoring. Additional benefits of deploying subsurface sensors include continuous and unattended measurement with minimum disturbance to the subsurface condition. In a series of field studies, an electrochemical oxygen sensor, a non-dispersive infrared (NDIR) carbon dioxide sensor, and two hydrocarbons sensors were employed for monitoring in-situ bioremediation of petroleum hydrocarbon contaminated soils. Biodegradation rates were effectively measured through an in-situ respiration measurement using subsurface oxygen and carbon dioxide sensors. The high sensitivity of the carbon dioxide sensor to small change in the concentration enables rapid respiration measurements. Subsurface hydrocarbon sensors offer a means to monitor the progress of remediation and the migration of contaminant vapors during the remediation. The chemical sensors tested are clearly cost effective for remediation monitoring. The strengths of oxygen and carbon dioxide sensors are complimentary to each other. Strengths and limitations of different hydrocarbon sensors were also noted. Balancing cost and performance of sensors is crucial for environmental remediation application.

Citation Download Citation

Dong X. Li "Effective sensing approach for assessment and monitoring of in-situ biodegradation in a subsurface environment", Proc. SPIE 3534, Environmental Monitoring and Remediation Technologies, (10 February 1999); https://doi.org/10.1117/12.339024

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Sensors

Oxygen

Fourier transforms

Soil science

Carbon dioxide

Environmental monitoring

Environmental sensing

Show All Keywords

Keywords/Phrases

Search In:

Publication Years