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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Online Access: | https://orca.cardiff.ac.uk/id/eprint/133484/ https://doi.org/10.1016/j.jhazmat.2016.05.042 |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:133484 2023-05-15T15:52:45+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 https://orca.cardiff.ac.uk/id/eprint/133484/ https://doi.org/10.1016/j.jhazmat.2016.05.042 unknown Elsevier Shen, Zhengtao, McMillan, Oliver, Jin, Fei https://orca.cardiff.ac.uk/view/cardiffauthors/A2566210Y.html orcid:0000-0003-0899-7063 orcid:0000-0003-0899-7063 and Al-Tabbaa, Abir 2016. Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study. Journal of Hazardous Materials 316 , pp. 214-220. 10.1016/j.jhazmat.2016.05.042 https://doi.org/10.1016/j.jhazmat.2016.05.042 doi:10.1016/j.jhazmat.2016.05.042 Article PeerReviewed 2016 ftunivcardiff https://doi.org/10.1016/j.jhazmat.2016.05.042 2022-11-10T23:37:21Z 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 Cardiff University: ORCA (Online Research @ Cardiff) Salisbury ENVELOPE(-153.617,-153.617,-85.633,-85.633) Journal of Hazardous Materials 316 214 220 |
institution |
Open Polar |
collection |
Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
unknown |
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 |
https://orca.cardiff.ac.uk/id/eprint/133484/ https://doi.org/10.1016/j.jhazmat.2016.05.042 |
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 |
Shen, Zhengtao, McMillan, Oliver, Jin, Fei https://orca.cardiff.ac.uk/view/cardiffauthors/A2566210Y.html orcid:0000-0003-0899-7063 orcid:0000-0003-0899-7063 and Al-Tabbaa, Abir 2016. Salisbury biochar did not affect the mobility or speciation of lead in kaolin in a short-term laboratory study. Journal of Hazardous Materials 316 , pp. 214-220. 10.1016/j.jhazmat.2016.05.042 https://doi.org/10.1016/j.jhazmat.2016.05.042 doi:10.1016/j.jhazmat.2016.05.042 |
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_ |
1766387859698221056 |