Performance of a sequential reactive barrier for Bioremediation of coal tar contaminated groundwater

Oriol Gibert; Andrew S. Ferguson; Robert M. Kalin; Rory Doherty; Keith W. Dickson; Karen L. McGeough; Jamie Robinson; Russell Thomas

doi:10.1021/es071527f

Performance of a sequential reactive barrier for Bioremediation of coal tar contaminated groundwater

Oriol Gibert, Andrew S. Ferguson, Robert M. Kalin, Rory Doherty, Keith W. Dickson, Karen L. McGeough, Jamie Robinson, Russell Thomas

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

Following a thorough site investigation, a biological Sequential Reactive Barrier (SEREBAR), designed to remove Polycyclic Aromatic Hydrocarbons (PAHs) and BTEX compounds, was installed at a Former Manufactured Gas Plant (FMGP) site. The novel design of the barrier comprises, in series, an interceptor and six reactive chambers. The first four chambers (2 nonaerated-2 aerated) were filled with sand to encourage microbial colonization. Sorbant Granular Activated Carbon (GAC) was present in the final two chambers in order to remove any recalcitrant compounds. The SEREBAR has been in continuous operation for 2 years at different operational flow rates (ranging from 320 L/d to 4000 L/d, with corresponding residence times in each chamber of 19 days and 1.5 days, respectively). Under low flow rate conditions (320−520 L/d) the majority of contaminant removal (>93%) occurred biotically within the interceptor and the aerated chambers. Under high flow rates (1000−4000 L/d) and following the installation of a new interceptor to prevent passive aeration, the majority of contaminant removal (>80%) again occurred biotically within the aerated chambers. The sorption zone (GAC) proved to be an effective polishing step, removing any remaining contaminants to acceptable concentrations before discharge down-gradient of the SEREBAR (overall removals >95%).

Original language	English
Pages (from-to)	6795-6801
Number of pages	7
Journal	Environmental Science and Technology
Volume	41
Issue number	19
DOIs	https://doi.org/10.1021/es071527f
Publication status	Published - 1 Oct 2007

Keywords

Sequential Reactive Barrier
SEREBAR
Polycyclic Aromatic Hydrocarbons
microbial colonization

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title = "Performance of a sequential reactive barrier for Bioremediation of coal tar contaminated groundwater",

abstract = "Following a thorough site investigation, a biological Sequential Reactive Barrier (SEREBAR), designed to remove Polycyclic Aromatic Hydrocarbons (PAHs) and BTEX compounds, was installed at a Former Manufactured Gas Plant (FMGP) site. The novel design of the barrier comprises, in series, an interceptor and six reactive chambers. The first four chambers (2 nonaerated-2 aerated) were filled with sand to encourage microbial colonization. Sorbant Granular Activated Carbon (GAC) was present in the final two chambers in order to remove any recalcitrant compounds. The SEREBAR has been in continuous operation for 2 years at different operational flow rates (ranging from 320 L/d to 4000 L/d, with corresponding residence times in each chamber of 19 days and 1.5 days, respectively). Under low flow rate conditions (320−520 L/d) the majority of contaminant removal (>93%) occurred biotically within the interceptor and the aerated chambers. Under high flow rates (1000−4000 L/d) and following the installation of a new interceptor to prevent passive aeration, the majority of contaminant removal (>80%) again occurred biotically within the aerated chambers. The sorption zone (GAC) proved to be an effective polishing step, removing any remaining contaminants to acceptable concentrations before discharge down-gradient of the SEREBAR (overall removals >95%). ",

keywords = "Sequential Reactive Barrier , SEREBAR, Polycyclic Aromatic Hydrocarbons , microbial colonization",

author = "Oriol Gibert and Ferguson, {Andrew S.} and Kalin, {Robert M.} and Rory Doherty and Dickson, {Keith W.} and McGeough, {Karen L.} and Jamie Robinson and Russell Thomas",

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T1 - Performance of a sequential reactive barrier for Bioremediation of coal tar contaminated groundwater

AU - Gibert, Oriol

AU - Ferguson, Andrew S.

AU - Kalin, Robert M.

AU - Doherty, Rory

AU - Dickson, Keith W.

AU - McGeough, Karen L.

AU - Robinson, Jamie

AU - Thomas, Russell

PY - 2007/10/1

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N2 - Following a thorough site investigation, a biological Sequential Reactive Barrier (SEREBAR), designed to remove Polycyclic Aromatic Hydrocarbons (PAHs) and BTEX compounds, was installed at a Former Manufactured Gas Plant (FMGP) site. The novel design of the barrier comprises, in series, an interceptor and six reactive chambers. The first four chambers (2 nonaerated-2 aerated) were filled with sand to encourage microbial colonization. Sorbant Granular Activated Carbon (GAC) was present in the final two chambers in order to remove any recalcitrant compounds. The SEREBAR has been in continuous operation for 2 years at different operational flow rates (ranging from 320 L/d to 4000 L/d, with corresponding residence times in each chamber of 19 days and 1.5 days, respectively). Under low flow rate conditions (320−520 L/d) the majority of contaminant removal (>93%) occurred biotically within the interceptor and the aerated chambers. Under high flow rates (1000−4000 L/d) and following the installation of a new interceptor to prevent passive aeration, the majority of contaminant removal (>80%) again occurred biotically within the aerated chambers. The sorption zone (GAC) proved to be an effective polishing step, removing any remaining contaminants to acceptable concentrations before discharge down-gradient of the SEREBAR (overall removals >95%).

AB - Following a thorough site investigation, a biological Sequential Reactive Barrier (SEREBAR), designed to remove Polycyclic Aromatic Hydrocarbons (PAHs) and BTEX compounds, was installed at a Former Manufactured Gas Plant (FMGP) site. The novel design of the barrier comprises, in series, an interceptor and six reactive chambers. The first four chambers (2 nonaerated-2 aerated) were filled with sand to encourage microbial colonization. Sorbant Granular Activated Carbon (GAC) was present in the final two chambers in order to remove any recalcitrant compounds. The SEREBAR has been in continuous operation for 2 years at different operational flow rates (ranging from 320 L/d to 4000 L/d, with corresponding residence times in each chamber of 19 days and 1.5 days, respectively). Under low flow rate conditions (320−520 L/d) the majority of contaminant removal (>93%) occurred biotically within the interceptor and the aerated chambers. Under high flow rates (1000−4000 L/d) and following the installation of a new interceptor to prevent passive aeration, the majority of contaminant removal (>80%) again occurred biotically within the aerated chambers. The sorption zone (GAC) proved to be an effective polishing step, removing any remaining contaminants to acceptable concentrations before discharge down-gradient of the SEREBAR (overall removals >95%).

KW - Sequential Reactive Barrier

KW - SEREBAR

KW - Polycyclic Aromatic Hydrocarbons

KW - microbial colonization

U2 - 10.1021/es071527f

DO - 10.1021/es071527f

M3 - Article

SN - 0013-936X

VL - 41

SP - 6795

EP - 6801

JO - Environmental Science and Technology

JF - Environmental Science and Technology

IS - 19

ER -

Performance of a sequential reactive barrier for Bioremediation of coal tar contaminated groundwater

Abstract

Keywords

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