Impact of organic and inorganic waste-derived amendments on metal(loid) availability in soils contaminated by industry, mining and metallurgy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F25%3A101943" target="_blank" >RIV/60460709:41330/25:101943 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.jece.2025.117762" target="_blank" >https://doi.org/10.1016/j.jece.2025.117762</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jece.2025.117762" target="_blank" >10.1016/j.jece.2025.117762</a>

Result language

angličtina

Original language name

Impact of organic and inorganic waste-derived amendments on metal(loid) availability in soils contaminated by industry, mining and metallurgy

Original language description

In situ immobilisation of soil contaminants is an effective remediation strategy for large polluted areas. It relies on amendment incorporation into soil to enhance natural sorption processes for reducing contaminant availability, mobility, and ecotoxicity. Locally available waste-derived amendments contribute to circular and sustainable economy by alleviating the pressure on primary resources and landfills. However, their suitability for soil remediation needs to be verified to ensure environmental safety. In this study, we thoroughly assessed the environmental applicability of various organic and inorganic waste-derived amendments in three contrast soils with distinct metal(loid) contamination. The soils were incubated for one month under controlled laboratory conditions with (1) iron chips, (2) iron mud, (3) sludge char, or (4) compost, either alone or combined. Iron-based materials generally immobilise metal(loid)s via sorption, while organic matter improves soil quality in general, but can increase metal(loid) mobility through metal(loid)-DOC complexation or competition. After the incubation, metal(loid) availability was assessed using diffusive gradients in thin-films (DGT), single and sequential extractions, combined with geochemical modelling and SEM/EDS investigations for metal(loid) speciation. The immobilisation efficiency of the amendments was significantly influenced by material, soil, and metal(loid) characteristics. Generally, the organic amendments applied alone increased metal(loid) availability. Contrary, the iron-based amendments, either alone or in the combined treatments, efficiently reduced metal (loid) availability with up to 99 % immobilisation efficiency. The geochemical investigations suggested that sorption processes were the dominant immobilising mechanisms responsible for metal(loid) retention in soil, while complexation with DOC lead to increased metal(loid) availability. Our study provides vital insights into the environmental suitability and applicability of various waste-derived amendments for areas severely contaminated with multiple metal(loid)s where the input waste provides more benefits over potential risks.

Czech name

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Czech description

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Type

J_imp - 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)

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

ISSN

2213-3437

e-ISSN

2213-3437

Volume of the periodical

13

Issue of the periodical within the volume

5

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

1-13

UT code for WoS article

001523405100006

EID of the result in the Scopus database

2-s2.0-105011352843