Topic Editors

School of Biology and Environment, Nanjing Forestry University, Nanjing, China
Dr. Xiang Li
College of Environment, Henan Normal University, Xinxiang, China
Dr. Yizhen Zhang
College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
Dr. Xuedong Du
College of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China
Dr. Jingju Cai
Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, China
College of Material Science and Engineering, Nanjing Forestry University, Nanjing, China
Dr. Qi Zhang
College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, China
College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China

Novel Advanced Oxidation Processes for Wastewater Treatment

Abstract submission deadline
31 August 2024
Manuscript submission deadline
30 June 2024
Viewed by
13162

Topic Information

Dear Colleagues,

Pollution of organic wastewaters, such as dyes, phenols, and pharmaceuticals, is a serious environmental problem, and advanced oxidation processes (AOPs) are potentially sound techniques to degrade such contaminants based on the generation of reactive species which are powerful oxidants and can effectively degrade almost all stable compounds. In addition, AOPs have great advantages for the treatment of trace harmful chemicals such as environmental hormones, enabling complete mineralization or decomposition of most organic materials. Furthermore, AOPs have good application prospects. AOPs can be divided into photocatalytic oxidation, catalytic oxidation, acoustic chemical oxidation, ozone oxidation, electrochemical oxidation, Fenton oxidation, etc.

Dr. Yuwei Pan
Dr. Xiang Li
Dr. Yizhen Zhang
Dr. Xuedong Du
Dr. Jingju Cai
Dr. Lu Gan
Dr. Qi Zhang
Dr. Jun Jiang
Topic Editors

Keywords

  • advanced oxidation processes
  • wastewater treatment
  • AOPs
  • photocatalytic oxidation
  • catalytic oxidation
  • acoustic chemical oxidation
  • ozone oxidation
  • electrochemical oxidation
  • Fenton oxidation

Participating Journals

Journal Name Impact Factor CiteScore Launched Year First Decision (median) APC
Catalysts
catalysts
3.9 6.3 2011 14.3 Days CHF 2700 Submit
Nanomaterials
nanomaterials
5.3 7.4 2010 13.6 Days CHF 2900 Submit
Separations
separations
2.6 2.5 2014 13.6 Days CHF 2600 Submit
Sustainability
sustainability
3.9 5.8 2009 18.8 Days CHF 2400 Submit
Water
water
3.4 5.5 2009 16.5 Days CHF 2600 Submit

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Published Papers (7 papers)

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24 pages, 6748 KiB  
Review
Metal-Based Electrocatalysts for Selective Electrochemical Nitrogen Reduction to Ammonia
by Yi-Zhen Zhang, Peng-Hui Li, Yi-Nuo Ren, Yun He, Cheng-Xu Zhang, Jue Hu, Xiao-Qiang Cao and Michael K. H. Leung
Nanomaterials 2023, 13(18), 2580; https://doi.org/10.3390/nano13182580 - 18 Sep 2023
Cited by 1 | Viewed by 1447
Abstract
Ammonia (NH3) plays a significant role in the manufacture of fertilizers, nitrogen-containing chemical production, and hydrogen storage. The electrochemical nitrogen reduction reaction (e-NRR) is an attractive prospect for achieving clean and sustainable NH3 production, under mild conditions driven by renewable [...] Read more.
Ammonia (NH3) plays a significant role in the manufacture of fertilizers, nitrogen-containing chemical production, and hydrogen storage. The electrochemical nitrogen reduction reaction (e-NRR) is an attractive prospect for achieving clean and sustainable NH3 production, under mild conditions driven by renewable energy. The sluggish cleavage of N≡N bonds and poor selectivity of e-NRR are the primary challenges for e-NRR, over the competitive hydrogen evolution reaction (HER). The rational design of e-NRR electrocatalysts is of vital significance and should be based on a thorough understanding of the structure–activity relationship and mechanism. Among the various explored e-NRR catalysts, metal-based electrocatalysts have drawn increasing attention due to their remarkable performances. This review highlighted the recent progress and developments in metal-based electrocatalysts for e-NRR. Different kinds of metal-based electrocatalysts used in NH3 synthesis (including noble-metal-based catalysts, non-noble-metal-based catalysts, and metal compound catalysts) were introduced. The theoretical screening and the experimental practice of rational metal-based electrocatalyst design with different strategies were systematically summarized. Additionally, the structure–function relationship to improve the NH3 yield was evaluated. Finally, current challenges and perspectives of this burgeoning area were provided. The objective of this review is to provide a comprehensive understanding of metal-based e-NRR electrocatalysts with a focus on enhancing their efficiency in the future. Full article
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20 pages, 4271 KiB  
Article
Early Warning Evaluation and Warning Trend Analysis of the Resource and Environment Carrying Capacity in Altay Prefecture, Xinjiang
by Shengxin Lan, Xiaona Wang, Meifang Li, Xiaohua Fu, Mei Xu, Jian Zhu, Ping Wang, Yu Mao, Zuoji Dong, Jiahui Li, Lanfang Cao and Zhiming Liu
Sustainability 2023, 15(12), 9825; https://doi.org/10.3390/su15129825 - 20 Jun 2023
Viewed by 985
Abstract
Ecologically fragile areas in China account for more than half of its land area. Performing early warning assessments and trend analyses of resource and environment carrying capacity in ecologically fragile areas can lay a scientific foundation for ecological conservation in the areas. Based [...] Read more.
Ecologically fragile areas in China account for more than half of its land area. Performing early warning assessments and trend analyses of resource and environment carrying capacity in ecologically fragile areas can lay a scientific foundation for ecological conservation in the areas. Based on the connotation of resource and environment carrying capacity, an early warning index system of resource and environment carrying capacity in Altay prefecture was constructed from the three aspects natural resource carrying capacity, eco-environment carrying capacity, and economic and social support capacity. The grey relational projection method model was used to analyze the current alarm situation of the resource and environment carrying capacity in Altay prefecture from 2011 to 2020, and then the back propagation (BP) neural network and a mathematical statistics software were used to predict the evolution of the alarm situation of the resource and environment carrying capacity in Altay prefecture from 2021 to 2025. The results demonstrated that (1) the natural resource carrying capacity subsystem was the main system of the development of the resource and environment carrying capacity in Altay prefecture, and its impact on the resource and environment carrying capacity in Altay prefecture was greater than the eco-environment carrying capacity and economic and social support capacity; (2) the resource and environmental carrying capacity of Altay prefecture showed a slight upward trend from 2011 to 2020, although the range was constrained and the level of warning remained “moderate warning”. A spatial pattern of “weak in the middle, strong in the two poles” was exhibited by the warning scenario about the carrying capacity of each county and city. Except for the warning of Habahe County and Qinghe County, where the warning was slightly worse than that in 2020, the warning of resource and environment carrying capacity in Altay prefecture and other counties and cities would show a trend of fluctuation and decline from 2021 to 2025. However, the degree of alarm did not change substantially and remained at the level of “moderate warning”; (3) the main factors restricting the mitigation of the warning of resource and environment carrying capacity in Altay prefecture included a low soil fertility index, a small total reservoir capacity, low per capita mineral resource reserves, a low water resource development and utilization rate, a low comprehensive utilization rate of industrial solid waste, and a low land output rate. Full article
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9 pages, 2493 KiB  
Communication
Degradation of Sulfamethoxazole in Aqueous Solution by Low-Energy X-ray Irradiation
by Jun Yao, Weidong Rao, Hua Kong, Wentao Sun, Dengzhu Guo, Zhiwei Li and Xianlong Wei
Catalysts 2023, 13(4), 714; https://doi.org/10.3390/catal13040714 - 9 Apr 2023
Cited by 1 | Viewed by 1294
Abstract
Antibiotic resistance has been a serious health threat of widespread concern, as antibiotics are difficult to degrade effectively in the environment. In this study, sulfamethoxazole (SMZ), a common antibiotic in an aqueous solution, was irradiated by low-energy X-ray to investigate the effect of [...] Read more.
Antibiotic resistance has been a serious health threat of widespread concern, as antibiotics are difficult to degrade effectively in the environment. In this study, sulfamethoxazole (SMZ), a common antibiotic in an aqueous solution, was irradiated by low-energy X-ray to investigate the effect of the absorption dose, initial concentration, initial pH, irradiation energy and other conditions on the degradation of SMZ, as well as the kinetic mechanism of SMZ degradation. The results showed that low-energy X-ray irradiation could effectively degrade SMZ in an aqueous solution at different initial concentrations and acid-base degrees, and the degradation effect of irradiation in the range of 60–80 keV is independent of the energy of X-rays. The degradation rate of the SMZ solution, with an initial concentration of 10.70 mg/L, was 94.6% at an absorbed dose of 890 Gray, with a pH of 3.5. Similar to other works on the degradation of antibiotics by ionizing irradiation, the degradation of SMZ solutions conformed to a pseudo-first-order kinetic mechanism. Full article
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8 pages, 2353 KiB  
Article
ZIF-67(Co)-Loaded Filter Paper for In Situ Catalytic Degradation of Bisphenol A in Water
by Zhimin Cai, Yutao Luo and Lu Gan
Separations 2022, 9(11), 340; https://doi.org/10.3390/separations9110340 - 3 Nov 2022
Cited by 2 | Viewed by 1344
Abstract
Herein, we loaded cobalt-based zeolite imidazolate frameworks, ZIF-67 (Co), onto commercial filter paper to prepare catalytic filter paper (ZFP) for the in situ degradation of bisphenol A (BPA) in water by activating peroxymonosulfate. The results showed that ZIF-67 (Co) was densely and uniformly [...] Read more.
Herein, we loaded cobalt-based zeolite imidazolate frameworks, ZIF-67 (Co), onto commercial filter paper to prepare catalytic filter paper (ZFP) for the in situ degradation of bisphenol A (BPA) in water by activating peroxymonosulfate. The results showed that ZIF-67 (Co) was densely and uniformly distributed on the surface of the filter paper. The prepared ZFP could effectively degrade BPA in situ through a gravity-driven filtration process. Specifically, when the flow rate of the BPA solution passing through ZFP was lower than 10 mL/min, 0.02 mM of BPA could be completely degraded by ZFP. Furthermore, ZFP showed promising water matrix adaptability, which could provide promising BPA degradation efficiency in a wide pH range or in the existence of multiple anions. The scavenging tests demonstrated that both sulfate radical and hydroxyl radical were generated for BPA degradation, in which hydroxyl radical was the dominant active species. The ZFP also exhibited promising long-time use stability with a high mineralization rate. This study provides a novel method to prepare high-efficient catalyst paper for the in situ organic pollutant removal in water media via a prompt filtration process. Full article
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10 pages, 1991 KiB  
Article
Efficient Removal of Ammonia Nitrogen by an Electrochemical Process for Spent Caustic Wastewater Treatment
by Sijin Zuo, Yinqiao Zhang, Ruixin Guo and Jianqiu Chen
Catalysts 2022, 12(11), 1357; https://doi.org/10.3390/catal12111357 - 3 Nov 2022
Cited by 2 | Viewed by 2206
Abstract
Spent caustic wastewater produced in a soda plant has a high concentration of ammonia nitrogen (NH4+-N). As excessive NH4+-N discharging into water bodies would cause eutrophication as well as destruction to the ecology balance, developing an efficient [...] Read more.
Spent caustic wastewater produced in a soda plant has a high concentration of ammonia nitrogen (NH4+-N). As excessive NH4+-N discharging into water bodies would cause eutrophication as well as destruction to the ecology balance, developing an efficient technology for NH4+-N removal from the spent caustic wastewater is imperative in the current society. In this study, an electrochemical process with graphene electrodes was designed for the NH4+-N removal in the spent caustic wastewater. The removal efficiency of the NH4+-N during the electrochemical process could reach 98.7% at 4 A in a short treatment time (within 120 s) with an acceptable energy consumption (6.1 kWh/m3-order). NO3 and NO2 were not detected during the electrochemical process. An insignificant amount of NH2Cl, NHCl2, and NCl3 produced in the treatment suggested that little of the NH4+-N reacted with chlorine, that is, chlorination played a negligible role in the NH4+-N removal. By electron equilibrium and nitrogen conversion analysis, we think that NH4+-N was primarily converted to NH2(ads) on the surface of a graphene electrode by one-electron transfer during the direct oxidation of the electrochemical process. Due to the high calcium ion (Ca2+) in the spent caustic wastewater, the electrode scale significantly increased to 1.4 g after treatment of 240 s at 4 A. By X-ray diffraction (XRD) analysis, the composition of the electrode scale is portlandite Ca(OH)2. Although the electrode scale was obvious during the electrochemical treatment, it could be alleviated by alternating the electrode polarity. As a result, the life and efficiency of the graphene electrode for NH4+-N removal could remain stable for a long time. These results suggest that the electrochemical process with a graphene electrode may provide a competitive technology for NH4+-N removal in spent caustic wastewater treatment. Full article
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16 pages, 3022 KiB  
Article
Effect of Anions and Cations on Tartrazine Removal by the Zero-Valent Iron/Peroxymonosulfate Process: Efficiency and Major Radicals
by Wenqi You, Liang Liu, Junjie Xu, Tao Jin, Lichun Fu and Yuwei Pan
Catalysts 2022, 12(10), 1114; https://doi.org/10.3390/catal12101114 - 26 Sep 2022
Cited by 12 | Viewed by 1211
Abstract
Zero-valent iron/peroxymonosulfate (Fe0/PMS) has been considered as a promising approach for wastewater treatment. Anions and cations are widely present in wastewater and have significant effects on the performance of the Fe0/PMS system for wastewater treatment. Thus, in the present [...] Read more.
Zero-valent iron/peroxymonosulfate (Fe0/PMS) has been considered as a promising approach for wastewater treatment. Anions and cations are widely present in wastewater and have significant effects on the performance of the Fe0/PMS system for wastewater treatment. Thus, in the present study, tartrazine was selected as the target model; SO42−, NO3, HCO3, and Cl were selected as representative anions and Ca2+, Cu2+, Mg2+, and Mn2+ were chosen as representative cations. The effect of these anions and cations on tartrazine removal and major radicals in the Fe0/PMS were systematically investigated. The presence of a certain concentration of SO42− and Cl had positive, NO3 had negative, and HCO3 had negligible effects on tartrazine removal in the Fe0/PMS system. SO42− and HCO3 had a small effect on the contribution proportion of reduction, SO4•− and OH; a certain concentration of Cl could enhance the contribution proportion of OH; and NO3 would decrease the contribution proportion of SO4•− and OH. A certain concentration of each of Ca2+, Cu2+, Mg2+, and Mn2+ could enhance the tartrazine removal in the Fe0/PMS system. Ca2+, Cu2+, and Mg2+ had no effect of the contribution of reduction, SO4•− and OH, while a certain concentration of Mn2+ could enhance the contribution proportion of SO4•−. These results can provide some references for the Fe0/PMS system to treat actual wastewater containing anions and cations. Full article
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18 pages, 1339 KiB  
Review
A Review of Sulfate Radical-Based and Singlet Oxygen-Based Advanced Oxidation Technologies: Recent Advances and Prospects
by Zhendong Li, Yanmei Sun, Dongfang Liu, Malan Yi, Fang Chang, Huiting Li and Yunyi Du
Catalysts 2022, 12(10), 1092; https://doi.org/10.3390/catal12101092 - 21 Sep 2022
Cited by 15 | Viewed by 2807
Abstract
In recent years, advanced oxidation process (AOPs) based on sulfate radical (SO4●−) and singlet oxygen (1O2) has attracted a lot of attention because of its characteristics of rapid reaction, efficient treatment, safety and stability, and easy [...] Read more.
In recent years, advanced oxidation process (AOPs) based on sulfate radical (SO4●−) and singlet oxygen (1O2) has attracted a lot of attention because of its characteristics of rapid reaction, efficient treatment, safety and stability, and easy operation. SO4●− and 1O2 mainly comes from the activation reaction of peroxymonosulfate (PMS) or persulfate (PS), which represent the oxidation reactions involving radicals and non-radicals, respectively. The degradation effects of target pollutants will be different due to the type of oxidant, reaction system, activation methods, operating conditions, and other factors. In this paper, according to the characteristics of PMS and PS, the activation methods and mechanisms in these oxidation processes, respectively dominated by SO4●− and 1O2, are systematically introduced. The research progress of PMS and PS activation for the degradation of organic pollutants in recent years is reviewed, and the existing problems and future research directions are pointed out. It is expected to provide ideas for further research and practical application of advanced oxidation processes dominated by SO4●− and 1O2. Full article
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