Journal Browser

► Journal Browser

Special Issue Editors

E-Mail Website
Guest Editor

Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Interests: energy, resource and environmental direct biotechnology; biofilm technology; bioremediation of soil, sediments, and groundwater; biomass to bioenergy and value-added biochemicals; green synthesis of catalytic functional materials
Special Issues, Collections and Topics in MDPI journals

Dr. Zedong Teng
E-Mail Website
Guest Editor

Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Interests: elemental biogeochemical cycles; environmental behavior and effects of pollutants; resource utilization of waste; green synthesis of functional materials

Special Issue Information

Dear Colleagues,

Soil and groundwater contamination by heavy metals and organic pollutants has been a topic of significant concern for human health and environmental quality. Therefore, it is imperative to develop and deploy innovative and specific remediation strategies for efficient clean-up of contaminations in soil and groundwater, ensuring soil and groundwater safety at technical and institutional levels.

An exciting new Special Issue entitled “State-of-the-Art Research of Soil and Groundwater Remediation” in the International Journal of Environmental Research and Public Health, a journal published by MDPI, is open for submissions, and we would like to invite you to contribute to it. The Special Issue accepts research on new remediation methods, especially physical, chemical, biological, and combined remediation methods, and how these impact the environment of soil and groundwater. We would be delighted if you would accept our invitation to submit a research or review article to this Special Issue.

Dr. Tinggang Li
Dr. Zedong Teng
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. International Journal of Environmental Research and Public Health 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 2500 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

soil remediation
soil improvement
groundwater remediation
heavy metal
organic pollutants
site contamination
remediation strategy

Published Papers (2 papers)

Download All Papers

Research

Open AccessArticle

Quantification of the Influence of Citrate/Fe(II) Molar Ratio on Hydroxyl Radical Production and Pollutant Degradation during Fe(II)-Catalyzed O₂ and H₂O₂ Oxidation Processes

and

Int. J. Environ. Res. Public Health 2022, 19(19), 12977; https://doi.org/10.3390/ijerph191912977 - 10 Oct 2022

Viewed by 856

Abstract

Ligand-enhanced hydroxyl radical (•OH) production is an important strategy for Fe(II)-catalyzed O₂ and H₂O₂ oxidation processes. However, the influence of the molar ratio of ligands to Fe(II) on •OH production remains elusive. This study employed citrate and inorganic dissolved Fe(II) (Fe(II)_dis) as the representative ligand and Fe(II) species, respectively, to quantify this relationship. Results showed that •OH production was highly dependent on the citrate/Fe(II) molar ratio. For instance, for the oxygenation of Fe(II)_dis, the •OH accumulations were 2.0–8.5, 3.4–28.5 and 8.1–42.3 μM at low (0.25–0.5), moderate (0.5–1), and high (1–2) citrate/Fe(II) molar ratios, respectively. At low citrate/Fe(II) molar ratio (<0.5), inorganic Fe(II)_dis mainly contributed to •OH production, with the increase in the citrate/Fe(II) molar ratio to a high level (1–2), Fe(II)-citrate complex turned to the electron source for •OH production. The change in Fe(II) speciation with the increase of citrate/Fe(II) molar ratio elevated •OH production. For pollutant degradation, 1 mg/L phenol was degraded by 53.6% within 40 min during oxygenation of Fe(II)-citrate system (1:1) at pH 7. Our results suggest that a moderate molar ratio of ligand/Fe(II) (0.5–1) may be optimal for Fe(II)-catalyzed O₂ and H₂O₂ oxidation processes. Full article

(This article belongs to the Special Issue State-of-the-Art Research of Soil and Groundwater Remediation)

► Show Figures

Figure 1

Open AccessArticle

Innovative Cost-Effective Nano-NiCo₂O₄ Cathode Catalysts for Oxygen Reduction in Air–Cathode Microbial Electrochemical Systems

and

Int. J. Environ. Res. Public Health 2022, 19(18), 11609; https://doi.org/10.3390/ijerph191811609 - 15 Sep 2022

Cited by 1 | Viewed by 627

Abstract

Microbial electrochemical systems (MESs) can harvest bioelectricity from varieties of organic matter in wastewater through electroactive microorganisms. Oxygen reduction reaction (ORR) in a cathode plays an important role in guaranteeing high power generation, which can be enhanced by cathode catalysts. Herein, the tiny crystalline grain nanocrystal NiCo₂O₄ is prepared via the economic method and utilized as an effective catalyst in air–cathode MESs. The linear sweep voltammetry results indicate that the current density of 2% nano-NiCo₂O₄/AC cathode (5.05 A/m²) at 0 V increases by 20% compared to the control (4.21 A/m²). The cyclic voltammetries (CVs) and the electrochemical impedance spectroscopy (EIS) showed that the addition of nano-NiCo₂O₄ (2%) is efficient in boosting the redox activity. The polarization curves showed that the MESs with 2% nano-NiCo₂O₄/AC achieved the highest maximum power density (1661 ± 28 mW/m²), which was 1.11 and 1.22 times as much as that of AC and 5% nano-NiCo₂O₄. Moreover, the adulteration of nano-NiCo₂O₄ with a content of 2% can not only enable the electrical activity of the electrode to be more stable, but also reduce the cost for the same power generation in MESs. The synthetic nano-NiCo₂O₄ undoubtedly has great benefits for large-scale MESs in wastewater treatment. Full article

(This article belongs to the Special Issue State-of-the-Art Research of Soil and Groundwater Remediation)

► Show Figures

Figure 1

Journal Menu

Journal Browser

Special Issue "State-of-the-Art Research of Soil and Groundwater Remediation"

Share This Special Issue

Special Issue Editors

Special Issue Information

Keywords

Published Papers (2 papers)

Research

Further Information

Guidelines

MDPI Initiatives

Follow MDPI