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    Rights statement: This is the author’s version of a work that was accepted for publication in Environmental Technology and Innovation. 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 Environmental Technology and Innovation, 6, 2016 DOI: 10.1016/j.eti.2016.07.002

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Impact of two contrasting biochars on the bioaccessibility of 14C-naphthalene in soil

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Impact of two contrasting biochars on the bioaccessibility of 14C-naphthalene in soil. / Ogbonnaya, Uchenna; Thomas, James; Fasina, Sunday A.; Semple, Kirk Taylor.

In: Environmental Technology and Innovation, Vol. 6, 11.2016, p. 80-93.

Research output: Contribution to journalJournal article

Harvard

Ogbonnaya, U, Thomas, J, Fasina, SA & Semple, KT 2016, 'Impact of two contrasting biochars on the bioaccessibility of 14C-naphthalene in soil', Environmental Technology and Innovation, vol. 6, pp. 80-93. https://doi.org/10.1016/j.eti.2016.07.002

APA

Ogbonnaya, U., Thomas, J., Fasina, S. A., & Semple, K. T. (2016). Impact of two contrasting biochars on the bioaccessibility of 14C-naphthalene in soil. Environmental Technology and Innovation, 6, 80-93. https://doi.org/10.1016/j.eti.2016.07.002

Vancouver

Ogbonnaya U, Thomas J, Fasina SA, Semple KT. Impact of two contrasting biochars on the bioaccessibility of 14C-naphthalene in soil. Environmental Technology and Innovation. 2016 Nov;6:80-93. https://doi.org/10.1016/j.eti.2016.07.002

Author

Ogbonnaya, Uchenna ; Thomas, James ; Fasina, Sunday A. ; Semple, Kirk Taylor. / Impact of two contrasting biochars on the bioaccessibility of 14C-naphthalene in soil. In: Environmental Technology and Innovation. 2016 ; Vol. 6. pp. 80-93.

Bibtex

@article{a1bdbb3b90114e588a8fcb9a4687232b,
title = "Impact of two contrasting biochars on the bioaccessibility of 14C-naphthalene in soil",
abstract = "This study investigated the impact of two different wood biochars (BioC1 and BioC2) on the extractability and biodegradation of 14C-naphthalene in soil. Both biochars had contrasting properties due to difference in feedstocks and pyrolytic conditions (450–500 °C and 900–1000 °C, designated as BioC1 and BioC2, respectively). This study investigated effects of biochar on the relationship between 14C-naphthalene mineralisation and calcium chloride (CaCl2), hydroxypropyl- β-cyclodextrin (HPCD) or methanol extraction in soil amended with 0{\%}, 0.1{\%}, 0.5{\%} and 1{\%} BioC1 and BioC2 after 1, 18, 36 and 72 d contact times. Total extents of 14C-naphthalene mineralisation and extraction were reduced with increasing concentrations of biochar; however, BioC2 showed greater sorptive capacity. Good linear correlation existed between total extents of 14C-naphthalene mineralisation and HPCD extractions in BioC1 (slope=0.86, r2=0.92) and BioC2 (slope=0.86, r2=0.94) amended soils. However CaCl2 and methanol extractions underestimated and overestimated extents of mineralisation, respectively. These results indicate that biochar can reduce the bioaccessibility of PAHs and the corresponding risk of exposure to biota, whilst HPCD extraction estimated the bioaccessible fraction of PAHs in soil. Bioaccessibility assessment is vital in evaluation of biodegradation potential and suitability of bioremediation as a remediation option.",
keywords = "Biochar, Mineralisation, HPCD, Naphthalene, Bioaccessibility, Macroporous",
author = "Uchenna Ogbonnaya and James Thomas and Fasina, {Sunday A.} and Semple, {Kirk Taylor}",
note = "This is the author’s version of a work that was accepted for publication in Environmental Technology and Innovation. 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 Environmental Technology and Innovation, 6, 2016 DOI: 10.1016/j.eti.2016.07.002",
year = "2016",
month = "11",
doi = "10.1016/j.eti.2016.07.002",
language = "English",
volume = "6",
pages = "80--93",
journal = "Environmental Technology and Innovation",
issn = "2352-1864",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - Impact of two contrasting biochars on the bioaccessibility of 14C-naphthalene in soil

AU - Ogbonnaya, Uchenna

AU - Thomas, James

AU - Fasina, Sunday A.

AU - Semple, Kirk Taylor

N1 - This is the author’s version of a work that was accepted for publication in Environmental Technology and Innovation. 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 Environmental Technology and Innovation, 6, 2016 DOI: 10.1016/j.eti.2016.07.002

PY - 2016/11

Y1 - 2016/11

N2 - This study investigated the impact of two different wood biochars (BioC1 and BioC2) on the extractability and biodegradation of 14C-naphthalene in soil. Both biochars had contrasting properties due to difference in feedstocks and pyrolytic conditions (450–500 °C and 900–1000 °C, designated as BioC1 and BioC2, respectively). This study investigated effects of biochar on the relationship between 14C-naphthalene mineralisation and calcium chloride (CaCl2), hydroxypropyl- β-cyclodextrin (HPCD) or methanol extraction in soil amended with 0%, 0.1%, 0.5% and 1% BioC1 and BioC2 after 1, 18, 36 and 72 d contact times. Total extents of 14C-naphthalene mineralisation and extraction were reduced with increasing concentrations of biochar; however, BioC2 showed greater sorptive capacity. Good linear correlation existed between total extents of 14C-naphthalene mineralisation and HPCD extractions in BioC1 (slope=0.86, r2=0.92) and BioC2 (slope=0.86, r2=0.94) amended soils. However CaCl2 and methanol extractions underestimated and overestimated extents of mineralisation, respectively. These results indicate that biochar can reduce the bioaccessibility of PAHs and the corresponding risk of exposure to biota, whilst HPCD extraction estimated the bioaccessible fraction of PAHs in soil. Bioaccessibility assessment is vital in evaluation of biodegradation potential and suitability of bioremediation as a remediation option.

AB - This study investigated the impact of two different wood biochars (BioC1 and BioC2) on the extractability and biodegradation of 14C-naphthalene in soil. Both biochars had contrasting properties due to difference in feedstocks and pyrolytic conditions (450–500 °C and 900–1000 °C, designated as BioC1 and BioC2, respectively). This study investigated effects of biochar on the relationship between 14C-naphthalene mineralisation and calcium chloride (CaCl2), hydroxypropyl- β-cyclodextrin (HPCD) or methanol extraction in soil amended with 0%, 0.1%, 0.5% and 1% BioC1 and BioC2 after 1, 18, 36 and 72 d contact times. Total extents of 14C-naphthalene mineralisation and extraction were reduced with increasing concentrations of biochar; however, BioC2 showed greater sorptive capacity. Good linear correlation existed between total extents of 14C-naphthalene mineralisation and HPCD extractions in BioC1 (slope=0.86, r2=0.92) and BioC2 (slope=0.86, r2=0.94) amended soils. However CaCl2 and methanol extractions underestimated and overestimated extents of mineralisation, respectively. These results indicate that biochar can reduce the bioaccessibility of PAHs and the corresponding risk of exposure to biota, whilst HPCD extraction estimated the bioaccessible fraction of PAHs in soil. Bioaccessibility assessment is vital in evaluation of biodegradation potential and suitability of bioremediation as a remediation option.

KW - Biochar

KW - Mineralisation

KW - HPCD

KW - Naphthalene

KW - Bioaccessibility

KW - Macroporous

U2 - 10.1016/j.eti.2016.07.002

DO - 10.1016/j.eti.2016.07.002

M3 - Journal article

VL - 6

SP - 80

EP - 93

JO - Environmental Technology and Innovation

JF - Environmental Technology and Innovation

SN - 2352-1864

ER -