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In‐situ sparging: Mass transfer mechanisms
Author(s) -
Clayton Wilson S.,
Bass David H.,
Ram Neil M.,
Nelson Christopher H.
Publication year - 1996
Publication title -
remediation journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.762
H-Index - 27
eISSN - 1520-6831
pISSN - 1051-5658
DOI - 10.1002/rem.3440060403
Subject(s) - sparging , mass transfer , environmental science , groundwater , secondary air injection , air sparging , contamination , ozone , environmental chemistry , chemistry , waste management , environmental remediation , geology , geotechnical engineering , chromatography , ecology , engineering , biology , organic chemistry
In‐situ sparging has been accepted as a method to rapidly remediate groundwater at considerably lower costs compared to remedies based on groundwater recovery alone. The success of in‐situ sparging depends on effective mass transfer between air and contaminated media in the subsurface. Factors affecting mass transfer include advective airflow, diffusive transport, interphase chemical partitioning, and chemical and biological reaction rates between sparged gases and subsurface contaminants, minerals, and naturally occurring organic compounds. Understanding these factors can increase the design efficiency of in‐situ sparging and assist in developing sparging systems that use gases other than air (i.e., oxygen, ozone, and methane).