Natural ageing of biochar improves its benefits to soil Pb immobilization and reduction in soil phytotoxicity
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F23%3A96368" target="_blank" >RIV/60460709:41330/23:96368 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007/s10705-023-10320-x" target="_blank" >https://link.springer.com/article/10.1007/s10705-023-10320-x</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10653-023-01617-5" target="_blank" >10.1007/s10653-023-01617-5</a>
Alternative languages
Result language
angličtina
Original language name
Natural ageing of biochar improves its benefits to soil Pb immobilization and reduction in soil phytotoxicity
Original language description
Amendments are good tools for immobilizing metal(loid) and improving phytoremediation success. However, the amendment effect is variable and depends on multiple parameters, including amendment type and ageing. Such an ageing effect is rarely studied. Our study is one of the first focusing on how biochar storage affects its effect on soil properties and metal(loid) immobilization, when biochar was applied alone or in combination with green manure. To answer this, a 33-day pot incubation experiment was set up using contaminated soil, amended with two biochars (differing in ages: old (Bo) and new (Bn)) and/or two green manures (leaves of clover or poplar) and sown with Phaseolus vulgaris (bioindicator plant). Soil pore waters, plant growth and metal(loid) accumulation were evaluated. Biochar reduced soil acidity (Bn: + 0.75 pH unit, Bo: + 0.72 unit) and Pb mobility (Bn: - 42%, Bo: - 50%), while green manures acidified the soil (- 0.30 pH unit) and immobilized Pb only after 10 days (- 44%). All amendments reduced soil phytotoxicity. Moreover, the biochar stored at room temperature for a few years demonstrated better abilities to improve soil properties, particularly for Pb immobilization, than the biochar freshly prepared. Finally, as mixtures maturated, soil parameters changed until about ten days, then tended to stabilize. Therefore, it can be concluded that (1) biochar storage will affect its chemical properties and ameliorate its effects, (2) biochar can ameliorate soil properties and immobilize metal(loid)s, while green manures tended to have adverse effects at first, and (3) soil/amendment mixtures should be left to mature about two weeks before potential plant implementation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
ISSN
0269-4042
e-ISSN
0269-4042
Volume of the periodical
45
Issue of the periodical within the volume
8
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
27
Pages from-to
6109-6135
UT code for WoS article
001000169700003
EID of the result in the Scopus database
2-s2.0-85160723973