Toxicity, Treatment Technology, Risk Assessment and Remediation Mechanisms of Inorganic/Organic Contaminants

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 May 2024) | Viewed by 1939

Special Issue Editors


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Guest Editor
Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
Interests: fate analysis of environmental pollutants; pollutant exposure and ecological effects; environmental; microbiology and environmental toxicology

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Guest Editor
Institute of Environmental Biotechnology and Functional Materials, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
Interests: soil remediation; organic pollutant; saline-alkali stress; electron transfer; synergetic mechanism

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Guest Editor
Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, China
Interests: emerging contaminants; environmental analysis

Special Issue Information

Dear Colleagues,

The concentrations of inorganic and organic pollutants that co-exist in soils, and water environments , mainly discharged from heavily industrialized areas, such as oil fields, mine fields, metallurgical refineries, etc., have recently begun receiving significant research attention. Inorganic pollutants such as heavy metals, and their mobility, bioavailability, and toxicity could interact with soil and water in their natural state and change their physicochemical properties. Toxic and persistent organic compounds, which have low volatility and are soluble in water, are also commonly present in soil–water systems. Once they have entered the soil, they are strongly absorbed onto soil organic matter, and slowly naturally degrade. In recent years, several researchers concentrated on studying toxic and persistent compounds. A novel environment-friendly technology with high activity and good selectivity is urgently needed for the research of toxicological evaluation, treatment methods, and removal mechanisms of toxic compounds in soil–water systems. This Special Issue focuses on novel toxicity analysis technologies, risk assessment, treatment methods and removal mechanisms, and their future in soil–water environment. Contributions to this Special Issue are expected to address the most debatable topics and the most relevant challenges of today’s treatment of toxic and persistent compounds.

This Special Issue welcomes manuscripts including (though not limited to) the following topics:

  • toxicity reduction;
  • remediation;
  • treatment technology;
  • inorganic or organic contaminants;
  • risk assessment;
  • emerging contaminants.

Dr. Fanping Zhu
Dr. Huifang Tian
Dr. Xiaohan Zhang
Guest Editors

Manuscript Submission Information

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Keywords

  • toxicity reduction
  • remediation
  • treatment technology
  • inorganic or organic contaminants
  • risk assessment
  • emerging contaminants

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Published Papers (1 paper)

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Research

15 pages, 6143 KiB  
Article
Degradation of Sodium Acetate by Catalytic Ozonation Coupled with a Mn-Functionalized Fly Ash: Reaction Parameters and Mechanism
by Yaoji Chen, Ruifu Chen, Xinglan Chang, Jingying Yan, Yajie Gu, Shuang Xi, Pengfei Sun and Xiaoping Dong
Toxics 2023, 11(8), 700; https://doi.org/10.3390/toxics11080700 - 14 Aug 2023
Cited by 2 | Viewed by 1431
Abstract
Supported ozone catalysts usually take alumina, activated carbon, mesoporous molecular sieve, graphene, etc. as the carrier for loading metal oxide via the impregnation method, sol–gel method and precipitation method. In this work, a Mn-modified fly ash catalyst was synthesized to reduce the consumption [...] Read more.
Supported ozone catalysts usually take alumina, activated carbon, mesoporous molecular sieve, graphene, etc. as the carrier for loading metal oxide via the impregnation method, sol–gel method and precipitation method. In this work, a Mn-modified fly ash catalyst was synthesized to reduce the consumption and high unit price of traditional catalyst carriers like alumina. As a solid waste discharged from coal-fired power plants fueled by coal, fly ash also has porous spherical fine particles with constant surface area and activity, abd is expected to be applied as the main component in the synthesis of ozone catalyst. After the pretreatment process and modification with MnOx, the obtained Mn-modified fly ash exhibited stronger specific surface area and porosity combined with considerable ozone catalytic performance. We used sodium acetate as the contaminant probe, which is difficult to directly decompose with ozone as the end product of ozone oxidation, to evaluate the performance of this Mn-modified fly. It was found that ozone molecules can be transformed to generate ·OH, ·O2 and 1O2 for the further oxidation of sodium acetate. The oxygen vacancy produced via Mn modification plays a crucial role in the adsorption and excitation of ozone. This work demonstrates that fly ash, as an industrial waste, can be synthesized as a potential industrial catalyst with stable physical and chemical properties, a simple preparation method and low costs. Full article
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