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Title: Assessment of intrinsic bioremediation of a coal-tar-affected aquifer using two-dimensional reactive transport and biogeochemical mass balance approaches

Abstract

Expedited site characterization and groundwater monitoring using direct-push technology and conventional monitoring wells were conducted at a former manufactured gas plant site. Biogeochemical data and heterotrophic plate counts support the presence of microbially mediated remediation. By superimposing solutions of a two-dimensional reactive transport analytical model, first-order degradation rate coefficients (day{sup -1}) of various compounds for the dissolved-phase plume were estimated (i.e., benzene (0.0084), naphthalene (0.0058), and acenaphthene (0.0011)). The total mass transformed by aerobic respiration, nitrate reduction, and sulfate reduction around the free-phase coal-tar dense-nonaqueous-phase-liquid region and in the plume was estimated to be approximately 4.5 kg/y using a biogeochemical mass-balance approach. The total mass transformed using the degradation rate coefficients was estimated to be approximately 3.6 kg/y. Results showed that a simple two-dimensional analytical model and a biochemical mass balance with geochemical data from expedited site characterization can be useful for rapid estimation of mass-transformation rates.

Authors:
; ; ; ;  [1]
  1. US EPA, Cincinnati, OH (United States). National Risk Management Research Laboratory
Publication Date:
OSTI Identifier:
20862322
Resource Type:
Journal Article
Resource Relation:
Journal Name: Water Environment Research; Journal Volume: 79; Journal Issue: 1
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL TAR; AQUIFERS; REMEDIAL ACTION; COAL GASIFICATION PLANTS; ABANDONED SITES; TOWN GAS; BIODEGRADATION; BENZENE; NAPHTHALENE; PLUMES; GROUND WATER; GEOCHEMISTRY; POLYCYCLIC AROMATIC HYDROCARBONS; MASS BALANCE; TWO-DIMENSIONAL CALCULATIONS; BIOCHEMISTRY

Citation Formats

Rogers, S.W., Ong, S.K., Stenback, G.A., Golchin, J., and Kjartanson, B.H. Assessment of intrinsic bioremediation of a coal-tar-affected aquifer using two-dimensional reactive transport and biogeochemical mass balance approaches. United States: N. p., 2007. Web. doi:10.2175/106143006X123120.
Rogers, S.W., Ong, S.K., Stenback, G.A., Golchin, J., & Kjartanson, B.H. Assessment of intrinsic bioremediation of a coal-tar-affected aquifer using two-dimensional reactive transport and biogeochemical mass balance approaches. United States. doi:10.2175/106143006X123120.
Rogers, S.W., Ong, S.K., Stenback, G.A., Golchin, J., and Kjartanson, B.H. Mon . "Assessment of intrinsic bioremediation of a coal-tar-affected aquifer using two-dimensional reactive transport and biogeochemical mass balance approaches". United States. doi:10.2175/106143006X123120.
@article{osti_20862322,
title = {Assessment of intrinsic bioremediation of a coal-tar-affected aquifer using two-dimensional reactive transport and biogeochemical mass balance approaches},
author = {Rogers, S.W. and Ong, S.K. and Stenback, G.A. and Golchin, J. and Kjartanson, B.H.},
abstractNote = {Expedited site characterization and groundwater monitoring using direct-push technology and conventional monitoring wells were conducted at a former manufactured gas plant site. Biogeochemical data and heterotrophic plate counts support the presence of microbially mediated remediation. By superimposing solutions of a two-dimensional reactive transport analytical model, first-order degradation rate coefficients (day{sup -1}) of various compounds for the dissolved-phase plume were estimated (i.e., benzene (0.0084), naphthalene (0.0058), and acenaphthene (0.0011)). The total mass transformed by aerobic respiration, nitrate reduction, and sulfate reduction around the free-phase coal-tar dense-nonaqueous-phase-liquid region and in the plume was estimated to be approximately 4.5 kg/y using a biogeochemical mass-balance approach. The total mass transformed using the degradation rate coefficients was estimated to be approximately 3.6 kg/y. Results showed that a simple two-dimensional analytical model and a biochemical mass balance with geochemical data from expedited site characterization can be useful for rapid estimation of mass-transformation rates.},
doi = {10.2175/106143006X123120},
journal = {Water Environment Research},
number = 1,
volume = 79,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}