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 (≤2mm and ≤0.15mm) was applied on a kaolin with three different lead (Pb(2+)) contamination levels (50mg/kg, 300mg/kg and 1000mg/kg) at the dosage of 1% in w/w. The short-term impact of biochar on the mobi...
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ftunivcam:oai:www.repository.cam.ac.uk:1810/291048 2024-02-04T09:59:35+01:00 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 application/pdf https://www.repository.cam.ac.uk/handle/1810/291048 https://doi.org/10.17863/CAM.38228 eng eng Elsevier BV https://www.sciencedirect.com/science/article/pii/S0304389416304800?via%3Dihub#! Journal of Hazardous Materials https://www.repository.cam.ac.uk/handle/1810/291048 doi:10.17863/CAM.38228 Biochar Immobilise Kaolin Lead Speciation Adsorption Cations Charcoal Edetic Acid Environmental Restoration and Remediation Hydrogen-Ion Concentration Metals Heavy Soil Soil Pollutants Article 2016 ftunivcam https://doi.org/10.17863/CAM.38228 2024-01-11T23:24:42Z Salisbury biochar (produced from British broadleaf hardwood) with two different particle sizes (≤2mm and ≤0.15mm) was applied on a kaolin with three different lead (Pb(2+)) contamination levels (50mg/kg, 300mg/kg and 1000mg/kg) at the dosage of 1% in w/w. The short-term impact of biochar on the mobility and speciation of Pb(2+) in the kaolin was investigated using attenuation periods of 1, 7 and 28 days. The leachability and extractability of Pb(2+) in carbonic acid leaching and EDTA extraction tests as well as the speciation of Pb(2+) in soils were not significantly affected by biochar treatment during all periods. The insignificant effects of biochar on Pb(2+) immobilisation were most likely attributed to the high adsorption capacity of Pb(2+) on the kaolin and biochar failed to competitively adsorb Pb(2+) against kaolin. The kaolin immobilised Pb(2+) primarily through cation exchange, which represents the readily bioavailable fractions of Pb(2+) 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 Apollo - University of Cambridge Repository Salisbury ENVELOPE(-153.617,-153.617,-85.633,-85.633) |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
Biochar Immobilise Kaolin Lead Speciation Adsorption Cations Charcoal Edetic Acid Environmental Restoration and Remediation Hydrogen-Ion Concentration Metals Heavy Soil Soil Pollutants |
spellingShingle |
Biochar Immobilise Kaolin Lead Speciation Adsorption Cations Charcoal Edetic Acid Environmental Restoration and Remediation Hydrogen-Ion Concentration Metals Heavy Soil Soil Pollutants 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. |
topic_facet |
Biochar Immobilise Kaolin Lead Speciation Adsorption Cations Charcoal Edetic Acid Environmental Restoration and Remediation Hydrogen-Ion Concentration Metals Heavy Soil Soil Pollutants |
description |
Salisbury biochar (produced from British broadleaf hardwood) with two different particle sizes (≤2mm and ≤0.15mm) was applied on a kaolin with three different lead (Pb(2+)) contamination levels (50mg/kg, 300mg/kg and 1000mg/kg) at the dosage of 1% in w/w. The short-term impact of biochar on the mobility and speciation of Pb(2+) in the kaolin was investigated using attenuation periods of 1, 7 and 28 days. The leachability and extractability of Pb(2+) in carbonic acid leaching and EDTA extraction tests as well as the speciation of Pb(2+) in soils were not significantly affected by biochar treatment during all periods. The insignificant effects of biochar on Pb(2+) immobilisation were most likely attributed to the high adsorption capacity of Pb(2+) on the kaolin and biochar failed to competitively adsorb Pb(2+) against kaolin. The kaolin immobilised Pb(2+) primarily through cation exchange, which represents the readily bioavailable fractions of Pb(2+) 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 |
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 BV |
publishDate |
2016 |
url |
https://www.repository.cam.ac.uk/handle/1810/291048 https://doi.org/10.17863/CAM.38228 |
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 |
https://www.repository.cam.ac.uk/handle/1810/291048 doi:10.17863/CAM.38228 |
op_doi |
https://doi.org/10.17863/CAM.38228 |
_version_ |
1789964481512603648 |