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Toxic Effects of Heavy Metals and Microplastics in Soil

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Soil Conservation and Sustainability".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 1744

Special Issue Editors


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Guest Editor
Department of Civil and Environmental Engineering, Vanderbilt University, Nashville, TN 37235, USA
Interests: heavy metals; fate and transport assessment; geochemical modeling; stabilization and solidification; waste management

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Guest Editor
Institute for Thermal Power Engineering, Zhejiang University, Hangzhou 310027, China
Interests: heavy metals stabilization and solidification; catalytic destruction of organic pollutants; heavy metals and organic pollutants adsorption; waste management
Special Issues, Collections and Topics in MDPI journals
College of Resources and Environment, Southwest University, Chongqing 400715, China
Interests: heavy metal; fate and transformation; soil remediation; recycling treatment of solid waste; environmental materials

Special Issue Information

Dear Colleagues,

Soil is a crucial component of the ecosystem that provides food, shelter, and nutrients to various living organisms. However, with the increasing industrialization and urbanization, soil contamination by heavy metals and microplastics has become a significant concern worldwide. Heavy metals and microplastics can affect soil microbial communities, nutrient cycling, and plant growth, leading to reduced crop yields and food safety concerns. Moreover, these pollutants can accumulate in the food chain, leading to adverse health effects on animals and humans. Research on the toxic effects of heavy metals and microplastics in soil is vital to understand the sources of contamination, the mechanisms of toxicity, and the potential risk to the environment and human health. The outcomes of this research area are crucial for developing effective strategies for soil remediation and sustainable management.

While there has been a significant amount of research on the toxic effects of heavy metals and microplastics in soil, there are still many knowledge gaps that need to be addressed, e.g., synergistic toxicity of heavy metals and microplastics in soil, standardization in methods used to measure microplastics in soil, the effects of heavy metals and microplastics on different soil types, long-term effects of these contaminants on soil health, effective and feasible methods for the remediation of contaminated soils, etc. The aim of this special issue is to bring together the latest research exploring the relationship between human activities and soil contamination, the mechanisms of heavy metals and microplastics toxicity, and the potential solutions to mitigate soil contamination. Through this special issue, we hope to provide a comprehensive platform for researchers to share their latest findings, exchange ideas, and propose new strategies to mitigate soil pollution and promote sustainable development.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but not limited to) the following:

  • Sources, pathways, and fate of heavy metals and microplastics in soil
  • Heavy metals and microplastics in urban and industrialized areas
  • Advances in analytical methods for detecting and quantifying heavy metals and microplastics in soil
  • Toxicity mechanisms of heavy metals and microplastics in soil organisms
  • The influence of heavy metals and microplastics on soil structure and function
  • Impacts of heavy metals and microplastics on soil fertility and plant growth
  • Ecotoxicology and risk assessment of heavy metals and microplastics in soil
  • Remediation technologies for heavy metal and microplastic contaminated soil
  • Soil microorganisms and their role in heavy metal and microplastic detoxification
  • Biodegradation and bioremediation of microplastics in soil

We believe that this special issue will provide a comprehensive overview of the current state of research on the toxic effects of heavy metals and microplastics in soil. We look forward to receiving your contributions.

Dr. Zhiliang Chen
Dr. Xiaoqing Lin
Dr. Lei Li
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 100 words) can be sent to the Editorial Office for announcement on this website.

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. Sustainability is an international peer-reviewed open access semimonthly 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 2400 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
  • microplastics
  • soil pollution
  • ecotoxicology
  • remediation technologies
  • soil microorganisms
  • risk assessment
  • biodegradation
  • bioremediation
  • sustainable development

Published Papers (1 paper)

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Research

20 pages, 1643 KiB  
Article
Ball Mill, Humic Acid, and Rock Phosphate-Modified Conocarpus Biochar for Efficient Removal of Heavy Metals from Contaminated Water
by Mansour S. Alhawas, Muhammad Imran Rafique, Munir Ahmad, Mohammad I. Al-Wabel, Adel R. A. Usman, Hamed Ahmed Al-Swadi and Abdullah S. Al-Farraj
Sustainability 2023, 15(14), 11474; https://doi.org/10.3390/su151411474 - 24 Jul 2023
Cited by 2 | Viewed by 1379
Abstract
An increasing trend of anthropogenic activities such as urbanization and industrialization has resulted in induction and accumulation of various kinds of heavy metals in the environment, which ultimately has disturbed the biogeochemical balance. Therefore, the present study was conducted to probe the efficiency [...] Read more.
An increasing trend of anthropogenic activities such as urbanization and industrialization has resulted in induction and accumulation of various kinds of heavy metals in the environment, which ultimately has disturbed the biogeochemical balance. Therefore, the present study was conducted to probe the efficiency of conocarpus (Conocarpus erectus L.) waste-derived biochar and its modified derivatives for the removal of lead (Pb), cadmium (Cd), copper (Cu), and zinc (Zn) from aqueous solutions. Biochar was produced at 600 °C and modified with humic acid (1:10 w/v ratio) and rock phosphate (0.5:1 w/w ratio). Additionally, produced biochar, as well as humic acid and rock phosphate-modified biochars, were subjected to ball milling separately. Equilibrium and kinetics batch experiments were conducted to investigate heavy metals adsorption on synthesized adsorbents. Adsorption isotherms and kinetics models were employed to explore the adsorption efficiency of produced materials for metals adsorption. Among all the applied adsorbents, ball-milled biochars showed comparatively higher adsorption compared to un-milled biochars. Humic acid and rock phosphate-modified milled biochar showed the highest adsorption capacity for Pb (18.85 mg g−1), while rock phosphate-modified milled biochar showed the highest adsorption capacity for Cu and Zn (24.02 mg g−1 and 187.14 mg g−1), and humic acid modified biochar adsorbed maximum Cd (30.89 mg g−1). Adsorption isotherm study confirmed Freundlich as the best-suited model (R2 = 0.99), while kinetics adsorption was well described by the pseudo-second-order (R2 = 0.99). Hence, it was concluded that ball-milled biochar modified with humic acid and rock phosphate could potentially remove heavy metals from contaminated water. Full article
(This article belongs to the Special Issue Toxic Effects of Heavy Metals and Microplastics in Soil)
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