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Innovative Approaches for Metal Remediation in Soils and Water

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Environmental Sciences".

Deadline for manuscript submissions: closed (20 April 2025) | Viewed by 2384

Special Issue Editors


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Guest Editor
Institute of Inorganic Chemistry, Faculty of Chemistry, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
Interests: environmental chemistry; heavy metals in the environment; bioaccumulation in aquatic plants and animals; bio indication using fish and other sentinel organisms; ionic liquids for heavy metal removal from natural waters; applications for heavy metal analyses in difficult matrices
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Guest Editor
Department of Science and Agroforestry Technology and Genetics, University of Castilla-La Mancha, Campus Universitario s/n, 02071 Albacete, Spain
Interests: environmental chemistry; heavy metals in the environment; microbial remediation; microbial ecology; biogeochemistry

Special Issue Information

Dear Colleagues,

Metals and metalloids are among the most critical pollutants of water and soils. Although often included under the term “heavy metals”, elements of concern include arsenic, aluminum, and selenium, which are not heavy metals in sensu stricto.

Although metallic and metalloidal elements differ greatly in terms of their physico-chemical properties, they still possess several commonalities: they occur naturally, are not degradable, and are toxic to biota when surpassing certain environmental concentrations. Varying in their properties, the search for remediation technologies must be undertaken. There is a strong need for innovation when it comes to the remediation of contaminated waterbodies and soils. We must urgently meet sustainability goals and develop greener methods for the very near future.

This Special Issue welcomes contributions practicing approaches which have sustainability as a clear goal and show a distinct commitment towards the development of greener chemistry/technology.   

Dr. Franz Jirsa
Dr. Nicolas Valiente
Guest Editors

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Keywords

  • green solvents
  • sustainable methods
  • recyclable components, bio-remediation
  • phytoremediation
  • mycoremediation
  • microbial remediation
  • adsorbent biomaterials

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Published Papers (1 paper)

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Research

22 pages, 8034 KiB  
Article
Combined Approaches for the Remediation of Cadmium- and Arsenic-Contaminated Soil: Phytoremediation and Stabilization Strategies
by Jian Cao, Yiping Tan and Chenxu Zhang
Appl. Sci. 2024, 14(16), 7144; https://doi.org/10.3390/app14167144 - 14 Aug 2024
Viewed by 1961
Abstract
The prolonged duration of phytoremediation poses a risk of heavy metal dispersal to the surrounding environment. This study investigated a combined remediation approach for cadmium (Cd)- and arsenic (As)-contaminated soil by integrating phytoremediation with stabilization techniques. Bidens pilosa was utilized as the phytoremediator, [...] Read more.
The prolonged duration of phytoremediation poses a risk of heavy metal dispersal to the surrounding environment. This study investigated a combined remediation approach for cadmium (Cd)- and arsenic (As)-contaminated soil by integrating phytoremediation with stabilization techniques. Bidens pilosa was utilized as the phytoremediator, and steel slag, pyrolusite, and FeSO4 were employed as stabilizing agents in the pot experiments. Key metrics such as soil moisture content, root length, plant height, and heavy metal concentrations in Bidens pilosa were measured to evaluate the remediation efficacy. Additionally, the bioavailability, leaching toxicity, and chemical forms of Cd and As, along with other soil properties, were analyzed. The results indicated that the optimal restoration effect was achieved by combining steel slag, pyrolusite, and FeSO4 with stabilizers in a ratio of 2:1:10. Additionally, the optimal dosage of these materials was found to be 9% by weight. Mechanistic studies, including heavy metal speciation analysis, X-ray photoelectron spectroscopy (XPS), and microbial community diversity analysis, revealed that the stabilization effects were primarily due to the interactions of anionic and cationic ions, chelation by organic acids secreted by plant roots, and enhanced microbial activity. A cost–benefit analysis demonstrated the technical, economic, and commercial viability of the combined remediation approach. Full article
(This article belongs to the Special Issue Innovative Approaches for Metal Remediation in Soils and Water)
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