SciTech Connect

Title: Spectral induced polarization signatures of abiotic FeS precipitation

Spectral induced polarization signatures of abiotic FeS precipitation In recent years, geophysical methods have been shown to be sensitive to microbial induced mineralization processes. The spectral induced polarization (SIP) method appears to be very promising for monitoring mineralization and microbial processes. With this work, we study the links of mineralization and SIP signals, in the absence of microbial activity. We recorded the SIP response during abiotic FeS precipitation. We show that the SIP signals are diagnostic of FeS mineralization and can be differentiated from SIP signals from bio-mineralization processes. More specifically the imaginary conductivity shows almost linear dependence on the amount of FeS precipitating out of solution, above the threshold value 0.006 gr under our experimental conditions. This research has direct implications for the use of the SIP method as a monitoring, and decision making, tool for sustainable remediation of metals in contaminated soils and groundwater.
Authors: ; ;
Publication Date:
OSTI Identifier:OSTI ID: 982919
Report Number(s):LBNL-3130E
Journal ID: ISSN 0016-8033; GPYSA7; TRN: US201014%%123
DOE Contract Number:DE-AC02-05CH11231
Resource Type:Journal Article
Resource Relation:Journal Name: Geophysics; Related Information: Journal Publication Date: 2010
Research Org:Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
Sponsoring Org:Earth Sciences Division
Country of Publication:United States
Language:English
Subject: 54; 58; DECISION MAKING; MINERALIZATION; MONITORING; POLARIZATION; PRECIPITATION; SOILS