Rights statement: This is the author’s version of a work that was accepted for publication in Journal of Hazardous Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Hazardous Materials, 416, 2021 DOI: 10.1016/j.jhazmat.2021.125702
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Mitigation of petroleum-hydrocarbon-contaminated hazardous soils using organic amendments
T2 - A review
AU - Hoang, S.A.
AU - Sarkar, B.
AU - Seshadri, B.
AU - Lamb, D.
AU - Wijesekara, H.
AU - Vithanage, M.
AU - Liyanage, C.
AU - Kolivabandara, P.A.
AU - Rinklebe, J.
AU - Lam, S.S.
AU - Vinu, A.
AU - Wang, H.
AU - Kirkham, M.B.
AU - Bolan, N.S.
N1 - This is the author’s version of a work that was accepted for publication in Journal of Hazardous Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Hazardous Materials, 416, 2021 DOI: 10.1016/j.jhazmat.2021.125702
PY - 2021/8/15
Y1 - 2021/8/15
N2 - The term “Total petroleum hydrocarbons” (TPH) is used to describe a complex mixture of petroleum-based hydrocarbons primarily derived from crude oil. Those compounds are considered as persistent organic pollutants in the terrestrial environment. A wide array of organic amendments is increasingly used for the remediation of TPH-contaminated soils. Organic amendments not only supply a source of carbon and nutrients but also add exogenous beneficial microorganisms to enhance the TPH degradation rate, thereby improving the soil health. Two fundamental approaches can be contemplated within the context of remediation of TPH-contaminated soils using organic amendments: (i) enhanced TPH sorption to the exogenous organic matter (immobilization) as it reduces the bioavailability of the contaminants, and (ii) increasing the solubility of the contaminants by supplying desorbing agents (mobilization) for enhancing the subsequent biodegradation. Net immobilization and mobilization of TPH have both been observed following the application of organic amendments to contaminated soils. This review examines the mechanisms for the enhanced remediation of TPH-contaminated soils by organic amendments and discusses the influencing factors in relation to sequestration, bioavailability, and subsequent biodegradation of TPH in soils. The uncertainty of mechanisms for various organic amendments in TPH remediation processes remains a critical area of future research. © 2021 Elsevier B.V.
AB - The term “Total petroleum hydrocarbons” (TPH) is used to describe a complex mixture of petroleum-based hydrocarbons primarily derived from crude oil. Those compounds are considered as persistent organic pollutants in the terrestrial environment. A wide array of organic amendments is increasingly used for the remediation of TPH-contaminated soils. Organic amendments not only supply a source of carbon and nutrients but also add exogenous beneficial microorganisms to enhance the TPH degradation rate, thereby improving the soil health. Two fundamental approaches can be contemplated within the context of remediation of TPH-contaminated soils using organic amendments: (i) enhanced TPH sorption to the exogenous organic matter (immobilization) as it reduces the bioavailability of the contaminants, and (ii) increasing the solubility of the contaminants by supplying desorbing agents (mobilization) for enhancing the subsequent biodegradation. Net immobilization and mobilization of TPH have both been observed following the application of organic amendments to contaminated soils. This review examines the mechanisms for the enhanced remediation of TPH-contaminated soils by organic amendments and discusses the influencing factors in relation to sequestration, bioavailability, and subsequent biodegradation of TPH in soils. The uncertainty of mechanisms for various organic amendments in TPH remediation processes remains a critical area of future research. © 2021 Elsevier B.V.
KW - Bioremediation
KW - Immobilization
KW - Mobilization
KW - Organic amendments
KW - Total petroleum hydrocarbons
KW - Biochemistry
KW - Biodegradation
KW - Contamination
KW - Crude oil
KW - Degradation
KW - Gasoline
KW - Organic pollutants
KW - Radioactive waste vitrification
KW - Soil pollution
KW - Soils
KW - Beneficial microorganisms
KW - Complex mixture
KW - Contaminated soils
KW - Hydrocarbon degradation
KW - Immobilisation
KW - Mobilisation
KW - Organics
KW - Terrestrial environments
KW - Hydrocarbons
U2 - 10.1016/j.jhazmat.2021.125702
DO - 10.1016/j.jhazmat.2021.125702
M3 - Journal article
VL - 416
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
SN - 0304-3894
M1 - 125702
ER -