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Water
Special Issues
Control and Remediation of Contaminants in Soil and Groundwater
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Control and Remediation of Contaminants in Soil and Groundwater

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Soil and Water".

Deadline for manuscript submissions: closed (27 October 2022) | Viewed by 3771

Special Issue Editor

Dr. Shejiang Liu

E-Mail Website
Guest Editor
School of Environmental Science and Engineering, Tianjin University, Tianjin 300354, China
Interests: water pollution control; groundwater pollution control; solid-waste resource treatment; anaerobic biological drying pretreatment technology; soil remediation; soil heavy metal pollution
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Heavy metals in the environment (e.g., cadmium) endanger soil functions, water quality and human health. There are various methods to treat heavy metal pollution in soil and groundwater, such as physical treatment, chemical treatment, and bioremediation. However, the existing technology has some limitations. At present, the in-situ immobilization of metals via chemical stabilization/solidification (S/S) is a particularly convenient, environmentally safe, low-cost, and highly efficient route for alleviating the toxicity and reducing the bioavailability of heavy metals in contaminated soil and groundwater. Because of the many advantages of chemical S/S, many studies on soil/groundwater heavy metal pollution remediation have focused on this approach. Overall, the aim of this Special Issue is to present original research and review articles that discuss the novel strategies, stabilizers and chelators for the stabilization/solidification (S/S) in heavy-metal-contaminated soil/groundwater remediation technology, and to share new progress.

Potential topics include but are not limited to the following:

  • Novel strategies to improve the efficiency of soil/groundwater heavy metal remediation.
  • Development of novel stabilizers or chelators to address soil/groundwater heavy metal pollution.
  • Research of long-term efficacy of stabilizers or chelators for the stabilization/solidification (S/S) of heavy metals.

We are looking forward to receiving your contributions.

Dr. Shejiang Liu
Guest Editor

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. Water 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 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 pollution
  • soil remediation
  • stabilization/solidification (S/S)
  • chelating resin
  • groundwater pollution

Published Papers (2 papers)

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Research

20 pages, 5430 KiB  
Article
Analysis of the Effect of Soil Remediation Processes Contaminated by Heavy Metals in Different Soils
by Ke Ren, Fangyuan Teng, Shejiang Liu and Xiuli Liu
Water 2022, 14(24), 4004; https://doi.org/10.3390/w14244004 - 8 Dec 2022
Cited by 4 | Viewed by 1820
Abstract
Heavy metal pollution in China’s soil is very serious, and soil remediation is urgent. At present, most of the domestic and foreign research is aimed at one soil type for soil heavy metal pollution remediation. However, the distribution of heavy metals and the [...] Read more.
Heavy metal pollution in China’s soil is very serious, and soil remediation is urgent. At present, most of the domestic and foreign research is aimed at one soil type for soil heavy metal pollution remediation. However, the distribution of heavy metals and the effect of remediation with chemical agents are different for different soils. This study is committed to investigating the effect of WTF on the remediation of heavy metal contamination in different soils based on the existing research in the laboratory. The influence of soil quality on remediation efficiency was analyzed by TCLP leaching of heavy metals, and different forms of heavy metals were extracted from the soil using the BCR method. The experimental results showed that the soil environment was alkaline, and the response to a low addition of WTF was more obvious. The Pearson correlation coefficient analysis yielded that the increase in the organic matter content led to an increase in the oxidizable Cd content. The WTF remediation did not change the overall acidity and alkalinity of the soil so that the overall soil environment remained stable; it increased the organic matter content and added fertility to the soil, and it increased the activity of most enzymes in the soil and promoted the circulation of the soil elements, making the soil fertile. Full article
(This article belongs to the Special Issue Control and Remediation of Contaminants in Soil and Groundwater)
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15 pages, 4377 KiB  
Article
Reactivity of Nitrate with Zero-Valent Iron
by Katie M. Wagner, Tasios Karathanasis and Christopher J. Matocha
Water 2022, 14(18), 2796; https://doi.org/10.3390/w14182796 - 8 Sep 2022
Cited by 2 | Viewed by 1630
Abstract
Elevated nitrate concentrations in groundwater and surface water supplies can negatively impact the quality of the environment and human health. Recent studies have examined the use of zero-valent iron technology to treat nitrate-contaminated groundwater. Mechanistic aspects of nitrate reduction by zero-valent iron are [...] Read more.
Elevated nitrate concentrations in groundwater and surface water supplies can negatively impact the quality of the environment and human health. Recent studies have examined the use of zero-valent iron technology to treat nitrate-contaminated groundwater. Mechanistic aspects of nitrate reduction by zero-valent iron are unresolved. This project investigated the kinetics and mechanism of nitrate reduction by zero-valent iron under anoxic conditions and under oxic conditions. Stirred-batch reactions were studied over environmentally relevant ranges of reactant concentration, pH, and temperature. A complex rate expression was derived with a 1.8 order dependence on nitrate, a 1.4 order dependence on zero-valent iron, and a fractional order (0.8) dependence on proton concentrations under anoxic conditions. An apparent activation energy of 35 kJ mol−1 was observed indicating that nitrate reduction was diffusion controlled under our conditions. Furthermore, the calculated entropy of activation value of −162 J mol−1K−1 indicates that this reaction occurred by an associative mechanism. Under oxic conditions, there was a lag period in nitrate reduction where oxygen was preferentially utilized, leading to a slower rate of nitrate reduction when compared with anoxic conditions. These rate data can be used in predicting nitrate disappearance in nitrate-contaminated groundwater and wastewater treated with zero-valent iron. Full article
(This article belongs to the Special Issue Control and Remediation of Contaminants in Soil and Groundwater)
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