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Toxics
Special Issues
Soil/Ground Water Pollution Remediation under the Background of Carbon Neutralization
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Soil/Ground Water Pollution Remediation under the Background of Carbon Neutralization

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

Deadline for manuscript submissions: closed (31 March 2023) | Viewed by 4404

Special Issue Editors

Prof. Dr. Qixing Zhou

E-Mail Website
Guest Editor
College of Environmental Science and Engineering, Nankai University, Tianjin, China
Interests: pollution ecotoxicology; environmental geochemistry and remediation; ecosystem health
Prof. Dr. Feili Li

E-Mail Website
Guest Editor
College of Environment, Zhejiang University of Technology, Hangzhou, China
Interests: combined remediation; heavy metal; biogeochemical process; pollution ecotoxicology
Dr. Jing An

E-Mail Website
Guest Editor
Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, China
Interests: pollution ecological process; phytoremediation; emerging contaminants; pollution ecotoxicology

Special Issue Information

Dear Colleagues,

Reducing carbon emissions and increasing carbon sink capacity are important ways to achieve carbon neutrality. Soil carbon pools account most of the carbon pools in terrestrial ecosystems. However, soil and ground water environment pollution influences the carbon sequestration capacity of soil ecosystems. The enviromental remediation can not only reduce soil/ground water pollution, but increase the carbon fixation ability, which is benificial to achive carbon neutralization. Therefore, the potential of contribution of soil and water enviromental to achive carbon neutralization during remediation should be considered.

This Special Issue mainly focuses on traditional biological, physical, chemical and synthetic remediation techniques in the soil and ground water environment. Studies reporting the combination of traditional remediation using these and other advanced technologies (e.g., microbial electrochemical technology, photoelectric combined bioremediation technology) are welcome. Furthermore, we encourage the studies to illustrate the molecular mechanism of remediation and subsequent structural and functional variation of the soil ecosystem, and try to uncover the carbon sequestration mechanism after remediation.

This Special Issue aims to discuss the technologies and mechanisms of pollution remediation in the soil and groundwater environment, and the carbon sequestration mechanism after remediation, to provide a scientific basis and theoretical support for assessing the potential carbon sequestration capability of soil carbon pool under the background of carbon neutralization.

Prof. Dr. Qixing Zhou
Prof. Dr. Feili Li
Dr. Jing An
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. 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

  • carbon neutralization
  • soil pollution
  • groundwater pollution
  • environmental remediation technology
  • soil carbon pool
  • carbon sequestration

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Published Papers (2 papers)

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Research

17 pages, 3204 KiB  
Article
Utilization of Indole Acetic Acid with Leucadendron rubrum and Rhododendron pulchrum for the Phytoremediation of Heavy Metals in the Artificial Soil Made of Municipal Sewage Sludge
by Xiaoling Chen, Jianru Feng, Huaqian Mou, Zheng Liang, Tianzheng Ding, Shiyu Chen and Feili Li
Toxics 2023, 11(1), 43; https://doi.org/10.3390/toxics11010043 - 31 Dec 2022
Cited by 5 | Viewed by 1789
Abstract
The development of phytoremediation by garden plants is an effective way to deal with the dilemma of municipal sewage sludge disposal. In this study, two ornamental plants were used as phytoremediation plants to rehabilitate heavy-metal-contaminated municipal sewage sludge in field experiments, and the [...] Read more.
The development of phytoremediation by garden plants is an effective way to deal with the dilemma of municipal sewage sludge disposal. In this study, two ornamental plants were used as phytoremediation plants to rehabilitate heavy-metal-contaminated municipal sewage sludge in field experiments, and the role of exogenous phytohormone IAA was also tested. Ornamental plants Loropetalum chinense var. rubrum (L. rubrum) and Rhododendron pulchrum (R. pulchrum) adapted well to the artificial soil made of municipal sewage sludge, and the concentrations of Cu, Zn, Pb, and Ni were decreased by 7.29, 261, 20.2, and 11.9 mg kg−1, respectively, in the soil planted with L. rubrum, and 7.60, 308, 50.1, and 17.7 mg kg−1, respectively, in the soil planted with R. pulchrum, accounted for 11–37% of the total amounts and reached significant levels (p < 0.05), except Cd. The concentration of Pb in all parts of the two ornamental plants was increased, as well as most heavy metals in L. rubrum root. As a result, three months after transplant, the phyto-extraction amounts in L. rubrum were 397, 10.9, and 1330 μg for Ni, Cd, and Pb, respectively, increased by 233% to 279%. The phyto-extraction amount in R. pulchrum were 1510, 250, and 237 μg for Zn, Pb, and Cu, respectively, increased by 143% to 193%. These results indicated a potential to remediate heavy metals of the two ornamental plants, especially L. rubrum. The results of correlation analysis implied that the interaction of heavy metals in the plant itself played an important role in the uptake of heavy metals. This seemed to explain why applying IAA in the experiment had little effect on plant growth and phytoremediation of heavy metals. This study provided a green and feasible idea for the proper disposal of municipal sewage sludge. Full article
(This article belongs to the Special Issue Soil/Ground Water Pollution Remediation under the Background of Carbon Neutralization)
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19 pages, 3743 KiB  
Article
Effects of Moss-Dominated Biocrusts on Soil Microbial Community Structure in an Ionic Rare Earth Tailings Area of Southern China
by Yongsheng Song, Renlu Liu, Liren Yang, Xiaoyu Xiao and Genhe He
Toxics 2022, 10(12), 782; https://doi.org/10.3390/toxics10120782 - 13 Dec 2022
Cited by 3 | Viewed by 2052
Abstract
Moss-dominated biocrusts are widespread in degraded mining ecosystems and play an important role in soil development and ecosystem primary succession. In this work, the soil microbial community structure under moss-dominated biocrusts in ionic rare earth tailings was investigated to reveal the relationship between [...] Read more.
Moss-dominated biocrusts are widespread in degraded mining ecosystems and play an important role in soil development and ecosystem primary succession. In this work, the soil microbial community structure under moss-dominated biocrusts in ionic rare earth tailings was investigated to reveal the relationship between different types of moss and taxonomy/function of microbiomes. The results showed that microbial community structure was significantly influenced by four moss species (Claopodium rugulosifolium, Orthotrichum courtoisii, Polytrichum formosum, and Taxiphyllum giraldii). The microbial assembly was more prominent in Claopodium rugulosifolium soil than in the other moss soils, which covers 482 bacterial genera (including 130 specific genera) and 338 fungal genera (including 72 specific genera), and the specific genus is 40% to 1300% higher than that of the other three mosses. Although only 141 and 140 operational taxonomic units (OTUs) rooted in bacterial and fungal clusters, respectively, were shared by all four mosses grown in ionic rare earth tailings, this core microbiome could represent a large fraction (28.2% and 38.7%, respectively) of all sequence reads. The bacterial population and representation are the most abundant, which mainly includes Sphingomonas, Clostridium_sensu_stricto_1, and unclassified filamentous bacteria and chloroplasts, while the fungi population is relatively singular. The results also show that biocrust dominated by moss has a positive effect on soil microbe activity and soil nutrient conditions. Overall, these findings emphasize the importance of developing moss-dominated biocrusts as hotspots of ecosystem functioning and precious microbial genetic resources in degraded rare-earth mining areas and promoting a better understanding of biocrust ecology in humid climates under global change scenarios. Full article
(This article belongs to the Special Issue Soil/Ground Water Pollution Remediation under the Background of Carbon Neutralization)
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