Fate and Transport of Heavy Metals in Polluted Soils

A special issue of Toxics (ISSN 2305-6304). This special issue belongs to the section "Toxicity Reduction and Environmental Remediation".

Deadline for manuscript submissions: 10 July 2026 | Viewed by 177

Special Issue Editors


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Guest Editor
School of Environmental and Life Science, Nanning Normal University, Nanning 530001, China
Interests: soil; heavy metals; DGT; amendments; risk assessment
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Guest Editor
College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
Interests: soil chemistry; organo-mineral complexes; interfacial processes; metals; sorption

Special Issue Information

Dear Colleagues,

Soil contamination with heavy metals (HMs) represents a significant environmental challenge, particularly in areas impacted by industrial, agricultural, and urban activities. Heavy metals, such as lead, cadmium, arsenic, and mercury, are persistent pollutants that can accumulate in soil for extended periods, causing both ecological and human health risks. The fate and transport of these metals in polluted soils are influenced by complex physical, chemical, and biological processes, which dictate their mobility, bioavailability, and long-term environmental impact.

We are pleased to invite the submission of original, high-impact research articles for this Special Issue, entitled “Fate and Transport of Heavy Metals in Polluted Soils”, of Toxics. This Special Issue aims to explore the mechanisms that govern the behavior and movement of heavy metals in polluted soil environments. It will focus on the scientific understanding of metal mobility, retention, and transformation processes while also highlighting novel strategies for mitigating the impacts of metal contamination. We encourage submissions that address the latest developments in environmental monitoring, modeling, and remediation techniques, as well as studies examining the effects of heavy metal exposure on soil health, ecosystem function, and food safety.

The scope of this Special Issue is detailed as follows:

Fate, transport, and behavior of heavy metals in polluted soils: Physical, chemical, and biological processes influencing the mobility and retention of heavy metals in contaminated soil systems.

Heavy metal bioavailability and toxicity: Understanding the factors that affect the uptake of heavy metals by plants, soil organisms, and humans.

Soil–plant interactions and heavy metal accumulation: Mechanisms of plant uptake, hyperaccumulation, and the impact of heavy metals on agricultural productivity.

Environmental modeling and risk assessment: Predictive models to assess the distribution and impact of heavy metal contaminants in soil environments.

Innovative technologies for heavy metal remediation: New approaches and methods for mitigating or removing heavy metals from polluted soils.

Soil health and ecosystem function: Effects of heavy metal pollution on soil microbiomes, biodiversity, and ecological processes.

Human and ecological health risks: Assessing the long-term consequences of heavy metal contamination on agriculture food safety and human health.

Monitoring and analytical techniques: Advancements in the detection and quantification of heavy metals in soil or soil biota.

Dr. Tuo Zhang
Dr. Xing Xia
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Toxics is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • heavy metals
  • soil contamination
  • fate and transport
  • soil health
  • environmental remediation
  • ecological risk assessment
  • bioavailability

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Published Papers (1 paper)

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Research

16 pages, 9692 KB  
Article
Stabilizing Active Aluminum (Al3+) in Acidic Soils via Biochar-Induced Microbial Niches: Focusing on Denitrifier-Mediated Mechanisms, Efficiency, and Environmental Outcomes
by Chao He, Tuo Zhang, Shiming Su, Yang Zhang, Xibai Zeng, Yao Qiu, Yaxiong Wen and Shiyong Tan
Toxics 2026, 14(2), 157; https://doi.org/10.3390/toxics14020157 - 6 Feb 2026
Abstract
The pervasive toxicity of active aluminum (Al3+) in acidic red soils threatens agroecosystem sustainability, with conventional chemical stabilizers facing cost and secondary pollution constraints. This study evaluated rice husk/sawdust and their pyrolysis-derived biochar as stabilizers, focusing on microbial synergy. Results showed [...] Read more.
The pervasive toxicity of active aluminum (Al3+) in acidic red soils threatens agroecosystem sustainability, with conventional chemical stabilizers facing cost and secondary pollution constraints. This study evaluated rice husk/sawdust and their pyrolysis-derived biochar as stabilizers, focusing on microbial synergy. Results showed 3% rice husk biochar (RB) achieved 22.1 ± 1.1% stabilization efficiency within 180 days, outperforming sawdust biochar (12.1 ± 0.8%) and raw biomass. Biochar’s alkalinity and porosity created neutral niches, enriching denitrifiers (Thiobacillus, Arthrobacter, Thermomonas) that elevated pH, promoted Al(OH)3 precipitation, and enhanced oxygen-containing functional groups. This work valorizes agricultural waste for long-term Al3+ toxicity mitigation. Full article
(This article belongs to the Special Issue Fate and Transport of Heavy Metals in Polluted Soils)
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