Biocalcification mediated reduction of PAHs bioavailability in artificially contaminated soil

Biswanath Mahanty; Subin Kim; Chang Gyun Kim

doi:10.1007/s11270-013-1479-3

Biocalcification mediated reduction of PAHs bioavailability in artificially contaminated soil

Biswanath Mahanty, Subin Kim, Chang Gyun Kim

Inha University

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

2 Scopus citations

Abstract

Apart from natural CO₂ sequestration, biocalcification process can reduce bioavailability of certain pollutants. In the present study, experiments were conducted to evaluate the change in bioavailability for three polycyclic aromatic hydrocarbons (PAHs) - anthracene (Ant), phenanthrene (Phe) and pyrene (Pyr) - either in normal soil extract that was spiked with PAHs (SESP) or spiked soil, after chemical calcification or biocalcification process. Results suggested that PAHs extractability in SESP (Ant: 2-4 mg/l, Phe: 3-6 mg/l and Pyr: 4.5-9 mg/l) after chemical precipitation of carbonate were not statistically different when compared to negative controls. However in biocalcification experiment the difference was statistically significant when conducted with SESP (P = 0.0425, α = 0.10) or soil (P = 0.035, α = 0.10). Supporting experiment revealed that the presence of microbial cells and sequence of Ca²⁺, CO₃ ^-2 addition was important in determining the extent in PAHs bioavailability reduction.

Original language	English
Article number	1479
Journal	Water, Air, and Soil Pollution
Volume	224
Issue number	3
DOIs	https://doi.org/10.1007/s11270-013-1479-3
State	Published - Mar 2013

Bibliographical note

Funding Information:
Acknowledgements One of the authors (CGK) acknowledges the financial support from NRF under the project of enhancement of CO2 biomineralization employing alkaline metals releaser.

Keywords

Bioavailability
Biocalcification
PAHs
Spiked soil

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10.1007/s11270-013-1479-3

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title = "Biocalcification mediated reduction of PAHs bioavailability in artificially contaminated soil",

abstract = "Apart from natural CO2 sequestration, biocalcification process can reduce bioavailability of certain pollutants. In the present study, experiments were conducted to evaluate the change in bioavailability for three polycyclic aromatic hydrocarbons (PAHs) - anthracene (Ant), phenanthrene (Phe) and pyrene (Pyr) - either in normal soil extract that was spiked with PAHs (SESP) or spiked soil, after chemical calcification or biocalcification process. Results suggested that PAHs extractability in SESP (Ant: 2-4 mg/l, Phe: 3-6 mg/l and Pyr: 4.5-9 mg/l) after chemical precipitation of carbonate were not statistically different when compared to negative controls. However in biocalcification experiment the difference was statistically significant when conducted with SESP (P = 0.0425, α = 0.10) or soil (P = 0.035, α = 0.10). Supporting experiment revealed that the presence of microbial cells and sequence of Ca2+, CO3 -2 addition was important in determining the extent in PAHs bioavailability reduction.",

keywords = "Bioavailability, Biocalcification, PAHs, Spiked soil",

author = "Biswanath Mahanty and Subin Kim and Kim, {Chang Gyun}",

note = "Funding Information: Acknowledgements One of the authors (CGK) acknowledges the financial support from NRF under the project of enhancement of CO2 biomineralization employing alkaline metals releaser.",

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AU - Mahanty, Biswanath

AU - Kim, Subin

AU - Kim, Chang Gyun

N1 - Funding Information: Acknowledgements One of the authors (CGK) acknowledges the financial support from NRF under the project of enhancement of CO2 biomineralization employing alkaline metals releaser.

PY - 2013/3

Y1 - 2013/3

N2 - Apart from natural CO2 sequestration, biocalcification process can reduce bioavailability of certain pollutants. In the present study, experiments were conducted to evaluate the change in bioavailability for three polycyclic aromatic hydrocarbons (PAHs) - anthracene (Ant), phenanthrene (Phe) and pyrene (Pyr) - either in normal soil extract that was spiked with PAHs (SESP) or spiked soil, after chemical calcification or biocalcification process. Results suggested that PAHs extractability in SESP (Ant: 2-4 mg/l, Phe: 3-6 mg/l and Pyr: 4.5-9 mg/l) after chemical precipitation of carbonate were not statistically different when compared to negative controls. However in biocalcification experiment the difference was statistically significant when conducted with SESP (P = 0.0425, α = 0.10) or soil (P = 0.035, α = 0.10). Supporting experiment revealed that the presence of microbial cells and sequence of Ca2+, CO3 -2 addition was important in determining the extent in PAHs bioavailability reduction.

AB - Apart from natural CO2 sequestration, biocalcification process can reduce bioavailability of certain pollutants. In the present study, experiments were conducted to evaluate the change in bioavailability for three polycyclic aromatic hydrocarbons (PAHs) - anthracene (Ant), phenanthrene (Phe) and pyrene (Pyr) - either in normal soil extract that was spiked with PAHs (SESP) or spiked soil, after chemical calcification or biocalcification process. Results suggested that PAHs extractability in SESP (Ant: 2-4 mg/l, Phe: 3-6 mg/l and Pyr: 4.5-9 mg/l) after chemical precipitation of carbonate were not statistically different when compared to negative controls. However in biocalcification experiment the difference was statistically significant when conducted with SESP (P = 0.0425, α = 0.10) or soil (P = 0.035, α = 0.10). Supporting experiment revealed that the presence of microbial cells and sequence of Ca2+, CO3 -2 addition was important in determining the extent in PAHs bioavailability reduction.

KW - Bioavailability

KW - Biocalcification

KW - PAHs

KW - Spiked soil

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DO - 10.1007/s11270-013-1479-3

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JO - Water, Air, and Soil Pollution

JF - Water, Air, and Soil Pollution

IS - 3

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ER -

Biocalcification mediated reduction of PAHs bioavailability in artificially contaminated soil

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Keywords

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