Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study
Salisbury biochar (produced from British broadleaf hardwood) with two different particle sizes (≤2 mm and ≤0.15 mm) was applied on a kaolin with three different lead (Pb2+) contamination levels (50 mg/kg, 300 mg/kg and 1000 mg/kg) at the dosage of 1% in w/w. The short-term impact of biochar on the m...
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ftuglasgow:oai:eprints.gla.ac.uk:154268 2023-05-15T15:52:46+02:00 Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study Shen, Zhengtao McMillan, Oliver Jin, Fei Al-Tabbaa, Abir 2016-10-05 text http://eprints.gla.ac.uk/154268/ http://eprints.gla.ac.uk/154268/1/154268.pdf en eng Elsevier http://eprints.gla.ac.uk/154268/1/154268.pdf Shen, Z., McMillan, O., Jin, F. <http://eprints.gla.ac.uk/view/author/45643.html> and Al-Tabbaa, A. (2016) Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study. Journal of Hazardous Materials <http://eprints.gla.ac.uk/view/journal_volume/Journal_of_Hazardous_Materials.html>, 316, pp. 214-220. (doi:10.1016/j.jhazmat.2016.05.042 <http://dx.doi.org/10.1016/j.jhazmat.2016.05.042>) (PMID:27236430) cc_by_nc_nd CC-BY-NC-ND Articles PeerReviewed 2016 ftuglasgow https://doi.org/10.1016/j.jhazmat.2016.05.042 2020-01-10T01:33:38Z Salisbury biochar (produced from British broadleaf hardwood) with two different particle sizes (≤2 mm and ≤0.15 mm) was applied on a kaolin with three different lead (Pb2+) contamination levels (50 mg/kg, 300 mg/kg and 1000 mg/kg) at the dosage of 1% in w/w. The short-term impact of biochar on the mobility and speciation of Pb2+ in the kaolin was investigated using attenuation periods of 1, 7 and 28 days. The leachability and extractability of Pb2+ in carbonic acid leaching and EDTA extraction tests as well as the speciation of Pb2+ in soils were not significantly affected by biochar treatment during all periods. The insignificant effects of biochar on Pb2+ immobilisation were most likely attributed to the high adsorption capacity of Pb2+ on the kaolin and biochar failed to competitively adsorb Pb2+ against kaolin. The kaolin immobilised Pb2+ primarily through cation exchange, which represents the readily bioavailable fractions of Pb2+ in soils and may still pose environmental risks. This paper suggests the inefficiency of biochar treament on heavy-metal contaminated clay-rich soils. Therefore a laboratory treatablity study with respect to the soil type may be crucial when large-scale biochar applications in heavy-metal associated soil remediation are evaluated. Article in Journal/Newspaper Carbonic acid University of Glasgow: Enlighten - Publications Salisbury ENVELOPE(-153.617,-153.617,-85.633,-85.633) Journal of Hazardous Materials 316 214 220 |
institution |
Open Polar |
collection |
University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
English |
description |
Salisbury biochar (produced from British broadleaf hardwood) with two different particle sizes (≤2 mm and ≤0.15 mm) was applied on a kaolin with three different lead (Pb2+) contamination levels (50 mg/kg, 300 mg/kg and 1000 mg/kg) at the dosage of 1% in w/w. The short-term impact of biochar on the mobility and speciation of Pb2+ in the kaolin was investigated using attenuation periods of 1, 7 and 28 days. The leachability and extractability of Pb2+ in carbonic acid leaching and EDTA extraction tests as well as the speciation of Pb2+ in soils were not significantly affected by biochar treatment during all periods. The insignificant effects of biochar on Pb2+ immobilisation were most likely attributed to the high adsorption capacity of Pb2+ on the kaolin and biochar failed to competitively adsorb Pb2+ against kaolin. The kaolin immobilised Pb2+ primarily through cation exchange, which represents the readily bioavailable fractions of Pb2+ in soils and may still pose environmental risks. This paper suggests the inefficiency of biochar treament on heavy-metal contaminated clay-rich soils. Therefore a laboratory treatablity study with respect to the soil type may be crucial when large-scale biochar applications in heavy-metal associated soil remediation are evaluated. |
format |
Article in Journal/Newspaper |
author |
Shen, Zhengtao McMillan, Oliver Jin, Fei Al-Tabbaa, Abir |
spellingShingle |
Shen, Zhengtao McMillan, Oliver Jin, Fei Al-Tabbaa, Abir Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study |
author_facet |
Shen, Zhengtao McMillan, Oliver Jin, Fei Al-Tabbaa, Abir |
author_sort |
Shen, Zhengtao |
title |
Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study |
title_short |
Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study |
title_full |
Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study |
title_fullStr |
Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study |
title_full_unstemmed |
Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study |
title_sort |
salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study |
publisher |
Elsevier |
publishDate |
2016 |
url |
http://eprints.gla.ac.uk/154268/ http://eprints.gla.ac.uk/154268/1/154268.pdf |
long_lat |
ENVELOPE(-153.617,-153.617,-85.633,-85.633) |
geographic |
Salisbury |
geographic_facet |
Salisbury |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
http://eprints.gla.ac.uk/154268/1/154268.pdf Shen, Z., McMillan, O., Jin, F. <http://eprints.gla.ac.uk/view/author/45643.html> and Al-Tabbaa, A. (2016) Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study. Journal of Hazardous Materials <http://eprints.gla.ac.uk/view/journal_volume/Journal_of_Hazardous_Materials.html>, 316, pp. 214-220. (doi:10.1016/j.jhazmat.2016.05.042 <http://dx.doi.org/10.1016/j.jhazmat.2016.05.042>) (PMID:27236430) |
op_rights |
cc_by_nc_nd |
op_rightsnorm |
CC-BY-NC-ND |
op_doi |
https://doi.org/10.1016/j.jhazmat.2016.05.042 |
container_title |
Journal of Hazardous Materials |
container_volume |
316 |
container_start_page |
214 |
op_container_end_page |
220 |
_version_ |
1766387863845339136 |