Soil Physical Constraints on Intrinsic Biodegradation of Petroleum Vapors in a Layered Subsurface

Andreas Houlberg Kristensen, Kaj Henriksen, Lars Mortensen, Kate M. Scow, Per Møldrup

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

17 Citationer (Scopus)

Resumé

Udgivelsesdato: 2010
OriginalsprogEngelsk
TidsskriftVadose Zone Journal
Vol/bind9
Udgave nummer1
Sider (fra-til)137-147
Antal sider11
ISSN1539-1663
DOI
StatusUdgivet - 2010

Fingerprint

biodegradation
vapors
petroleum
vadose zone
soil
hydrocarbons
soil moisture
soil water
petroleum hydrocarbon
soil texture
soil pore system
bioremediation
soil pollution
benzene
pore space
sandy loam
subsoil
limestone
microbial activity
slurry

Emneord

  • Umættet zone
  • Jordtekstur
  • Vandindhold
  • Kulbrinteforurening
  • Bioremediering
  • Biologisk nedbrydning

Citer dette

Kristensen, Andreas Houlberg ; Henriksen, Kaj ; Mortensen, Lars ; Scow, Kate M. ; Møldrup, Per. / Soil Physical Constraints on Intrinsic Biodegradation of Petroleum Vapors in a Layered Subsurface. I: Vadose Zone Journal. 2010 ; Bind 9, Nr. 1. s. 137-147.
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title = "Soil Physical Constraints on Intrinsic Biodegradation of Petroleum Vapors in a Layered Subsurface",
abstract = "Intrinsic biodegradation of organic contaminants in the soil vadose zone depends on site-specific soil properties controlling biophysical and geochemical interactions within the soil pore space. In this study we evaluated the effect of soil texture and moisture conditions on aerobic biodegradation in a deep and highly layered vadose zone contaminated with petroleum hydrocarbons. Soil slurry experiments on benzene biodegradation were used for determining the relative potential for hydrocarbon biodegradation in 100 soil samples collected from 2-16 m below ground surface. Regardless of nutrient-poor and calcareous subsoil conditions, the results showed a significant aerobic biodegradation potential. Average first-order rate constants (k1) ranged from 0 to 5 d-1 and varied significantly across soil types in the order sandy loam > fine sand > limestone. Within samples with high biodegradation potential, soil moisture conditions were controlling an upper boundary of the aerobic microbial activity, due to a close link between water content and the potential for oxygen diffusion in the soil. The results suggest soil texture and moisture conditions to be governing the potential for aerobic intrinsic biodegradation in the deep vadose zone. As a result, management of petroleum hydrocarbon spill sites will benefit from site-specific conceptual models in which the vadose zone is divided into geological compartments with different biophysical potential for biodegradation and bioremediation.",
keywords = "Um{\ae}ttet zone, Jordtekstur, Vandindhold, Kulbrinteforurening, Bioremediering, Biologisk nedbrydning, Vadose zone, Soil texture, Soil water content, Hydrocarbon contamination, Bioremediation, Biodegradation",
author = "Kristensen, {Andreas Houlberg} and Kaj Henriksen and Lars Mortensen and Scow, {Kate M.} and Per M{\o}ldrup",
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Soil Physical Constraints on Intrinsic Biodegradation of Petroleum Vapors in a Layered Subsurface. / Kristensen, Andreas Houlberg; Henriksen, Kaj; Mortensen, Lars; Scow, Kate M.; Møldrup, Per.

I: Vadose Zone Journal, Bind 9, Nr. 1, 2010, s. 137-147.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Soil Physical Constraints on Intrinsic Biodegradation of Petroleum Vapors in a Layered Subsurface

AU - Kristensen, Andreas Houlberg

AU - Henriksen, Kaj

AU - Mortensen, Lars

AU - Scow, Kate M.

AU - Møldrup, Per

PY - 2010

Y1 - 2010

N2 - Intrinsic biodegradation of organic contaminants in the soil vadose zone depends on site-specific soil properties controlling biophysical and geochemical interactions within the soil pore space. In this study we evaluated the effect of soil texture and moisture conditions on aerobic biodegradation in a deep and highly layered vadose zone contaminated with petroleum hydrocarbons. Soil slurry experiments on benzene biodegradation were used for determining the relative potential for hydrocarbon biodegradation in 100 soil samples collected from 2-16 m below ground surface. Regardless of nutrient-poor and calcareous subsoil conditions, the results showed a significant aerobic biodegradation potential. Average first-order rate constants (k1) ranged from 0 to 5 d-1 and varied significantly across soil types in the order sandy loam > fine sand > limestone. Within samples with high biodegradation potential, soil moisture conditions were controlling an upper boundary of the aerobic microbial activity, due to a close link between water content and the potential for oxygen diffusion in the soil. The results suggest soil texture and moisture conditions to be governing the potential for aerobic intrinsic biodegradation in the deep vadose zone. As a result, management of petroleum hydrocarbon spill sites will benefit from site-specific conceptual models in which the vadose zone is divided into geological compartments with different biophysical potential for biodegradation and bioremediation.

AB - Intrinsic biodegradation of organic contaminants in the soil vadose zone depends on site-specific soil properties controlling biophysical and geochemical interactions within the soil pore space. In this study we evaluated the effect of soil texture and moisture conditions on aerobic biodegradation in a deep and highly layered vadose zone contaminated with petroleum hydrocarbons. Soil slurry experiments on benzene biodegradation were used for determining the relative potential for hydrocarbon biodegradation in 100 soil samples collected from 2-16 m below ground surface. Regardless of nutrient-poor and calcareous subsoil conditions, the results showed a significant aerobic biodegradation potential. Average first-order rate constants (k1) ranged from 0 to 5 d-1 and varied significantly across soil types in the order sandy loam > fine sand > limestone. Within samples with high biodegradation potential, soil moisture conditions were controlling an upper boundary of the aerobic microbial activity, due to a close link between water content and the potential for oxygen diffusion in the soil. The results suggest soil texture and moisture conditions to be governing the potential for aerobic intrinsic biodegradation in the deep vadose zone. As a result, management of petroleum hydrocarbon spill sites will benefit from site-specific conceptual models in which the vadose zone is divided into geological compartments with different biophysical potential for biodegradation and bioremediation.

KW - Umættet zone

KW - Jordtekstur

KW - Vandindhold

KW - Kulbrinteforurening

KW - Bioremediering

KW - Biologisk nedbrydning

KW - Vadose zone

KW - Soil texture

KW - Soil water content

KW - Hydrocarbon contamination

KW - Bioremediation

KW - Biodegradation

U2 - 10.2136/vzj2009.0010

DO - 10.2136/vzj2009.0010

M3 - Journal article

VL - 9

SP - 137

EP - 147

JO - Vadose Zone Journal

JF - Vadose Zone Journal

SN - 1539-1663

IS - 1

ER -