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The potential of biochar to remove hydrophobic compounds from model sandy soils

I.L. Hallin, P. Douglas, S.H. Doerr, I. Matthews, R. Bryant, C. Charbonneau, Peter Douglas Orcid Logo, Stefan Doerr Orcid Logo, Cecile Charbonneau Orcid Logo

Geoderma, Volume: 285, Pages: 132 - 140

Swansea University Authors: Peter Douglas Orcid Logo, Stefan Doerr Orcid Logo, Cecile Charbonneau Orcid Logo

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DOI (Published version): 10.1016/j.geoderma.2016.09.018

Abstract

Charcoals have long been used to adsorb organics from water and other substrates; we hypothesise that biochar may act in a similar way when mixed with soil, removing hydrophobic organic compounds from the soil surfaces. To test this hypothesis, we developed quantitative methods for addition of two h...

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Published in: Geoderma
ISSN: 0016-7061
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa30879
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spelling 2016-11-03T10:14:50.5496139 v2 30879 2016-10-31 The potential of biochar to remove hydrophobic compounds from model sandy soils e8784a005f86bc615bc6d04e87fbbacd 0000-0002-7760-3614 Peter Douglas Peter Douglas true false 575eb5094f2328249328b3e43deb5088 0000-0002-8700-9002 Stefan Doerr Stefan Doerr true false 4dc059714847cb22ed922ab058950560 0000-0001-9887-2007 Cecile Charbonneau Cecile Charbonneau true false 2016-10-31 BMS Charcoals have long been used to adsorb organics from water and other substrates; we hypothesise that biochar may act in a similar way when mixed with soil, removing hydrophobic organic compounds from the soil surfaces. To test this hypothesis, we developed quantitative methods for addition of two hydrophobic organic compounds (octadecane and octadecanoic acid, commonly found in naturally hydrophobic soils) to, and their subsequent extraction from, acid washed sand (as a model for sandy soil). We then measured the quantity of the organic compounds which remained on the sand after: deposition; subsequent addition of 0, 1, 5, 10, 25 or 40 % wettable biochar; and storage for 1, 10, and 30 days in solutions of pH 3, 6 or 9. We found that there were small reductions in hydrophobic compound on sand with 1 and 5 % biochar additions, but that 10 % biochar removed ~ 50 %, and ≥ 25 % biochar removed ~ 100 %. The significance of these results in understanding the potential of wettable biochar to remove hydrophobic compounds from sandy soils, and thus act as an ameliorant of soil water repellency, is discussed. Journal Article Geoderma 285 132 140 0016-7061 1 1 2017 2017-01-01 10.1016/j.geoderma.2016.09.018 COLLEGE NANME Biomedical Sciences COLLEGE CODE BMS Swansea University 2016-11-03T10:14:50.5496139 2016-10-31T11:26:28.4958176 Faculty of Science and Engineering School of Engineering and Applied Sciences - Uncategorised I.L. Hallin 1 P. Douglas 2 S.H. Doerr 3 I. Matthews 4 R. Bryant 5 C. Charbonneau 6 Peter Douglas 0000-0002-7760-3614 7 Stefan Doerr 0000-0002-8700-9002 8 Cecile Charbonneau 0000-0001-9887-2007 9 0030879-03112016101221.pdf hallin2016.pdf 2016-11-03T10:12:21.1300000 Output 437023 application/pdf Accepted Manuscript true 2017-09-30T00:00:00.0000000 false
title The potential of biochar to remove hydrophobic compounds from model sandy soils
spellingShingle The potential of biochar to remove hydrophobic compounds from model sandy soils
Peter Douglas
Stefan Doerr
Cecile Charbonneau
title_short The potential of biochar to remove hydrophobic compounds from model sandy soils
title_full The potential of biochar to remove hydrophobic compounds from model sandy soils
title_fullStr The potential of biochar to remove hydrophobic compounds from model sandy soils
title_full_unstemmed The potential of biochar to remove hydrophobic compounds from model sandy soils
title_sort The potential of biochar to remove hydrophobic compounds from model sandy soils
author_id_str_mv e8784a005f86bc615bc6d04e87fbbacd
575eb5094f2328249328b3e43deb5088
4dc059714847cb22ed922ab058950560
author_id_fullname_str_mv e8784a005f86bc615bc6d04e87fbbacd_***_Peter Douglas
575eb5094f2328249328b3e43deb5088_***_Stefan Doerr
4dc059714847cb22ed922ab058950560_***_Cecile Charbonneau
author Peter Douglas
Stefan Doerr
Cecile Charbonneau
author2 I.L. Hallin
P. Douglas
S.H. Doerr
I. Matthews
R. Bryant
C. Charbonneau
Peter Douglas
Stefan Doerr
Cecile Charbonneau
format Journal article
container_title Geoderma
container_volume 285
container_start_page 132
publishDate 2017
institution Swansea University
issn 0016-7061
doi_str_mv 10.1016/j.geoderma.2016.09.018
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Uncategorised{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Uncategorised
document_store_str 1
active_str 0
description Charcoals have long been used to adsorb organics from water and other substrates; we hypothesise that biochar may act in a similar way when mixed with soil, removing hydrophobic organic compounds from the soil surfaces. To test this hypothesis, we developed quantitative methods for addition of two hydrophobic organic compounds (octadecane and octadecanoic acid, commonly found in naturally hydrophobic soils) to, and their subsequent extraction from, acid washed sand (as a model for sandy soil). We then measured the quantity of the organic compounds which remained on the sand after: deposition; subsequent addition of 0, 1, 5, 10, 25 or 40 % wettable biochar; and storage for 1, 10, and 30 days in solutions of pH 3, 6 or 9. We found that there were small reductions in hydrophobic compound on sand with 1 and 5 % biochar additions, but that 10 % biochar removed ~ 50 %, and ≥ 25 % biochar removed ~ 100 %. The significance of these results in understanding the potential of wettable biochar to remove hydrophobic compounds from sandy soils, and thus act as an ameliorant of soil water repellency, is discussed.
published_date 2017-01-01T03:37:39Z
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score 11.013799

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