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Title: In situ biosparging at an Amoco site: Subsurface air distribution and biostimulation

Abstract

A pilot test was conducted at an Amoco Oil petroleum products storage terminal to investigate the effectiveness of in situ biosparging for soil and groundwater remediation. This process was designed to reduce hydrocarbon concentrations in both soil and groundwater by promoting in situ biodegradation through air injection at low flowrates below the water table. The radius of influence of injected air in soil and groundwater was between 4.5 to 6.0 m (15 to 20 ft) at air flowrates of 40 to 85 standard liters per minute (1.5 to 3.0 scfm), by oxygen, carbon dioxide, and dissolved oxygen measurements. A helium tracer test demonstrated relatively uniform air channel distribution within 4.5 m (15 ft) in the saturated zone. The oxygen uptake rate in soil was between 0.08% and 0.21% per hour, which corresponds to a theoretical soil hydrocarbon biodegradation rate between 1.5 to 3.9 mg/kg soil/day. A three-order-of-magnitude increase in bacterial population in the capillary fringe, the increase in groundwater bacterial population, and a reduction in groundwater benzene, toluene, ethylbenzene, and xylenes (BTEX) concentrations after one month of biosparging demonstrated the effectiveness of this technology in stimulating biological degradation in the groundwater.

Authors:
; ; ;  [1];  [2];  [3]
  1. Amoco Corp., Naperville, IL (United States)
  2. Amoco Corp., Livonia, MI (United States)
  3. Amoco Oil Co., Chicago, IL (United States)
Publication Date:
OSTI Identifier:
467738
Report Number(s):
CONF-950483-
ISBN 1-57477-003-9; TRN: 97:008324
Resource Type:
Conference
Resource Relation:
Conference: 3. international in situ and on-site bioreclamation symposium, San Diego, CA (United States), 24-27 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of In situ aeration: Air sparging, bioventing, and related remediation process; Hinchee, R.E. [ed.] [Battelle Memorial Inst., Columbus, OH (United States)]; Miller, R.N. [ed.] [Air Force Center for Environmental Excellence, Brooks AFB, TX (United States)]; Johnson, P.C. [ed.] [Arizona State Univ., Tempe, AZ (United States)]; PB: 630 p.; Bioremediation, Volume 3(2)
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; BIODEGRADATION; REMEDIAL ACTION; HYDROCARBONS; GAS INJECTION; IN-SITU PROCESSING; OIL SPILLS; AIR FLOW; ALKYLATED AROMATICS; TOLUENE; XYLENES; BENZENE

Citation Formats

Javanmardian, M, Schwartz, W P, Masin, C A, Kremesec, Jr, V J, Huber, J S, and Olson, C B. In situ biosparging at an Amoco site: Subsurface air distribution and biostimulation. United States: N. p., 1995. Web.
Javanmardian, M, Schwartz, W P, Masin, C A, Kremesec, Jr, V J, Huber, J S, & Olson, C B. In situ biosparging at an Amoco site: Subsurface air distribution and biostimulation. United States.
Javanmardian, M, Schwartz, W P, Masin, C A, Kremesec, Jr, V J, Huber, J S, and Olson, C B. Sun . "In situ biosparging at an Amoco site: Subsurface air distribution and biostimulation". United States.
@article{osti_467738,
title = {In situ biosparging at an Amoco site: Subsurface air distribution and biostimulation},
author = {Javanmardian, M and Schwartz, W P and Masin, C A and Kremesec, Jr, V J and Huber, J S and Olson, C B},
abstractNote = {A pilot test was conducted at an Amoco Oil petroleum products storage terminal to investigate the effectiveness of in situ biosparging for soil and groundwater remediation. This process was designed to reduce hydrocarbon concentrations in both soil and groundwater by promoting in situ biodegradation through air injection at low flowrates below the water table. The radius of influence of injected air in soil and groundwater was between 4.5 to 6.0 m (15 to 20 ft) at air flowrates of 40 to 85 standard liters per minute (1.5 to 3.0 scfm), by oxygen, carbon dioxide, and dissolved oxygen measurements. A helium tracer test demonstrated relatively uniform air channel distribution within 4.5 m (15 ft) in the saturated zone. The oxygen uptake rate in soil was between 0.08% and 0.21% per hour, which corresponds to a theoretical soil hydrocarbon biodegradation rate between 1.5 to 3.9 mg/kg soil/day. A three-order-of-magnitude increase in bacterial population in the capillary fringe, the increase in groundwater bacterial population, and a reduction in groundwater benzene, toluene, ethylbenzene, and xylenes (BTEX) concentrations after one month of biosparging demonstrated the effectiveness of this technology in stimulating biological degradation in the groundwater.},
doi = {},
url = {https://www.osti.gov/biblio/467738}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {12}
}

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