Review
Environmental Sciences
Hai Duc Minh Tran, Sandrine Boivin, Hitoshi Kodamatani, Keisuke Ikehata, Takahiro Fujioka
Summary: The study compared the effectiveness of UV lamps with different wavelengths in eliminating pathogens and CECs in water, finding that the combined use of 222 nm KrCl or 185 + 254 nm LP-Hg lamps with H2O2 is the best option for achieving target removal levels of both pathogens and CECs in potable water reuse.
Article
Green & Sustainable Science & Technology
Xiyan Xu, Shuming Liu, Peifu Sun, Zhiren Guo, Kate Smith, Dongxiang Zhang, Hansheng Li, Jorge Bedia, Carolina Belver
Summary: This study investigated the mineralization of 1,4-dioxane using a solar-driven system with homemade catalysts. The results showed that the catalyst could effectively degrade 1,4-dioxane and remove more than 90% of the total organic carbon. The reaction pathway and degradation products were also identified.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Environmental Sciences
Takahiro Fujioka, Hitoshi Kodamatani, Hai Duc Minh Tran, Atsushi Fujioka, Koki Hino, Takumi Yoshikawa, Daisuke Inoue, Keisuke Ikehata
Summary: Advanced oxidation processes (AOPs) are effective in removing emerging pollutants such as N-nitrosodimethylamine and 1,4-dioxane during potable water reuse. Vacuum-ultraviolet (V-UV) light treatment is advantageous, and the addition of hydrogen peroxide enhances pollutant removal efficiency.
Article
Chemistry, Applied
Ciara Byrne, Saoirse Dervin, Daphne Hermosilla, Noemi Merayo, Angeles Blanco, Steven Hinder, Moussab Harb, Dionysios D. Dionysiou, Suresh C. Pillai
Summary: This study systematically investigated the modification of anatase TiO2 with tungsten and its impact on phase transition temperature and photocatalytic degradation of 1,4-dioxane. It was found that 8 mol. % W was the optimum loading for the development of high temperature stable anatase WTiO2 composite photocatalysts. The photocatalytic activity was significantly affected by the anatase content, with 8-W-TiO2 showing the highest degradation rate for 1,4-dioxane.
Article
Engineering, Environmental
Weixiang Chao, Shanshan Pi, Yang Yang, Zhida Li, Yongjie Yu, Ying Yang, Ruijie Yang, Haiyan Li, Lu Lu
Summary: Water scarcity in arid areas can be alleviated by exploiting unconventional water resources like domestic wastewater (DWW). A solar-driven interfacial evaporation system, using a solar-absorber made of b-TiO2-DW, shows promise for direct potable reuse (DPR) from DWW. The system achieves high efficiency in desalination and evaporation, with potential to meet the daily drinking water needs of 2-3 people in undeveloped areas with limited infrastructure.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Wen-Min Wang, Lu Zhang, Wen-Long Wang, Jin-Yi Huang, Qian-Yuan Wu, Jerry J. Wu
Summary: In this study, Cu-MOF and oxygen vacancy were used to improve the 1,4-dioxane (1,4-D) photocatalytic degradation efficiency of Bi2O3. The incorporation of Cu-MOF increased the specific surface area, pore structure, and reduced particle size of Bi2O3, leading to enhanced visible light utilization and improved photoelectron transfer rate. However, oxygen vacancies negatively affected the photocatalytic activity of Bi2O3. Therefore, the construction of heterojunctions using Cu-MOF can significantly enhance the efficiency of 1,4-D degradation, making Bi2O3/Cu-MOF a promising photocatalyst.
Article
Engineering, Environmental
S. Thanka Rajan, Jaganathan Senthilnathan, A. Arockiarajan
Summary: This study investigated the formation of N-enriched mixed metal oxides thin film composites and their photocatalytic activity to degrade PRH-Dye dye. The addition of N to Ta2O5-Nb2O5-N significantly enhanced the active sites and increased the generation of OH radicals. The Ta2O5-Nb2O5-N composite exhibited high photocatalytic activity under solar radiation, making it a promising material for water pollution remediation.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Daniela Nunes, Ana Rita Fragoso, Tomas Freire, Mariana Matias, Ana Carolina Marques, Rodrigo Ferrao de Paiva Martins, Elvira Fortunato, Ana Pimentel
Summary: In this study, tungsten oxide (WO3) nanostructured films were successfully synthesized under microwave radiation with different synthesis times and temperatures, resulting in well-crystallized structures with varying morphologies. The films exhibited excellent photocatalytic activity towards rhodamine B (RhB) degradation under solar radiation, highlighting their potential for environmental remediation. The eco-friendly, fast and cost-effective synthesis route used in this study can contribute to the production of highly photoactive materials.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Polymer Science
Anatoly Nikolayevich Boyandin, Viktoriya Aleksandrovna Bessonova, Natalya Leonidovna Ertiletskaya, Anna Alekseevna Sukhanova, Taisiya Aleksandrovna Shalygina, Alexander Alexandrovich Kondrasenko
Summary: The degradation pattern of bacterial poly-3-hydroxybutyrate (PHB) in dimethylformamide (DMF) and dioxane solutions at 100 degrees C assisted by ethylenediamine, 1,4-diaminobutane and monoaminoethanol was studied. 被翻译成:研究了在二甲基甲酰胺(DMF)和二噁烷溶液中,通过乙二胺、1,4-二氨基丁烷和单氨乙醇的辅助下,细菌聚-3-羟基丁酸酯(PHB)在100℃下的降解模式。
Article
Chemistry, Physical
Zhiying Zhang, Siqinhaolu Hao, Xueyi Duan, Tinglan Wang, Haiying Li, Guilan Fan, Yanhong Zhao, Jingyi Li
Summary: In this study, a CuBi2O4/WO3 p-n heterojunction composite was synthesized and used for the selective oxidation of benzyl alcohol. The origin of its excellent photocatalytic activity was investigated using multiple characterization methods. The composite catalyst showed high selectivity for benzaldehyde and conversion of benzyl alcohol under optimized conditions. The stability of the catalyst was also examined, and a possible mechanism for the oxidation of benzyl alcohol to benzaldehyde was proposed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Claudio Zippilli, Lorenzo Botta, Bruno Mattia Bizzarri, Lucia Nencioni, Marta De Angelis, Virginia Protto, Gianluca Giorgi, Maria Camilla Baratto, Rebecca Pogni, Raffaele Saladino
Summary: Novel belladine N-oxides active against influenza A virus were synthesized through a laccase-catalyzed oxidation reaction, showing high functional-group compatibility. These compounds exhibit inhibitory effects on the early stage of the virus replication life cycle.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Environmental Sciences
Mahmoud Samy, Mohamed Gar Alalm, Mohamed N. Khalil, Eman Ezeldean, A. El-Dissouky, Mahmoud Nasr, Ahmed Tawfik
Summary: This study investigates a combined photocatalytic and adsorption system for efficient removal of 1,4 dioxane from hazardous landfill leachate. Copper/iron doped zinc oxide (Cu-Fe-ZnO) was introduced to biochar to enhance its efficacy. The system achieved high removal efficiency of 1,4 dioxane and produced degradation products like ethylene glycol and organic acids.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Engineering, Environmental
Gang Shi, Shota Nishizawa, Taku Matsushita, Yuna Kato, Takahiro Kozumi, Yoshihiko Matsui, Nobutaka Shirasaki
Summary: The study optimized the performance of VUV photoreactor through computational fluid dynamics and energy analysis, examining the effects of flow rate and radiant exitance on the efficiency of 1,4-dioxane degradation.
Article
Engineering, Environmental
Sherif Ismail, Ahmed Elreedy, Manabu Fujii, Shou-Qing Ni, Ahmed Tawfik, Mohamed Elsamadony
Summary: Long-term exposure to 1,4-dioxane should not exceed 10 mg/L for successful application, as higher concentrations can significantly inhibit anammox bacteria. The first compartment of the PABR acts as a shield against the toxicity of 1,4-dioxane through high EPS secretion, but prolonged exposure at higher concentrations can lead to bacterial lysis. Despite initial inhibition, anammox bacteria were able to recover after cesation of 1,4-dioxane exposure.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Energy & Fuels
Jun Li, Na Luo, Yinhai Wang, Han Li, Tao Zhang, Xingui Tang, Zhengfa Hu
Summary: Solar energy is considered a sustainable green energy source for environmental pollution prevention. Tungsten trioxide (WO3) serves as an attractive photocatalyst and support for solar energy utilization. Hydrogen (H) doping in semiconductors has gained attention due to its ability to provide free carriers and enhance solar energy utilization. In our research, we developed a new method to prepare H-doped WO3, which showed improved photocatalytic activity and extended solar light response range to near-infrared. The contact of noble metal Ag and HxWO3 played a crucial role in separating electron-hole pairs and enhancing the performance of tungsten trioxide.
Article
Engineering, Environmental
Yang Li, Yixin Zhang, Guangshen Xia, Juhong Zhan, Gang Yu, Yujue Wang
Summary: This study evaluated the feasibility of electrochemical hydrogen peroxide (H2O2) production with gas diffusion electrode (GDE) for decentralized water treatment, showing high current efficiency and low energy consumption, making it a promising technology for household and community water treatment.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Article
Chemistry, Physical
Yang Guo, Yixin Zhang, Gang Yu, Yujue Wang
Summary: By comparing the conventional scavenger approach with the proposed probe approach, this study found that using probes can accurately reveal catalytic ozonation mechanisms and provide an effective way to assess the contribution of various ROS to pollutant abatement.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Environmental Sciences
Huijiao Wang, Linzhao Sun, Kai Yan, Jianbing Wang, Chunrong Wang, Gang Yu, Yujue Wang
Summary: The EP process accelerates ozone decomposition by electrochemically generating hydrogen peroxide, significantly reducing the time required for micropollutant abatement. Pretreatment processes can remove DOC and ammonia from raw water, leading to improved micropollutant abatement efficiency and reduced energy consumption during the EP treatment.
Article
Engineering, Environmental
Majid Mustafa, Huijiao Wang, Richard H. Lindberg, Jerker Fick, Yujue Wang, Mats Tysklind
Summary: The study investigated the abatements of 89 pharmaceuticals in secondary effluent by ozonation and the E-peroxone process, developing a QSAR model to explore the relationship between their chemical structure and oxidation rates by ozone. Results showed that the E-peroxone process could accelerate the abatement of pharmaceuticals with relatively low ozone reactivity compared to ozonation. The validated QSAR model predicted 66 pharmaceuticals to be highly O-3-resistant, providing a useful tool for estimating the ozone reactivity of pharmaceuticals of diverse chemistry and predicting their fate in ozone-based processes.
FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
(2021)
Article
Engineering, Environmental
Yang Guo, Juhong Zhan, Gang Yu, Yujue Wang
Summary: During ozonation, the concentrations ratios of hydroxyl radicals, superoxide radicals and ozone remain constant, indicating the potential non-negligible role of superoxide radicals in the degradation of certain micropollutants with similar or higher reactivity compared to hydroxyl radicals. The proposed chemical kinetic model accurately simulates the abatement efficiencies of ozone-resistant micropollutants by considering the contribution of superoxide radicals, providing a valuable tool for predicting micropollutant removal during ozonation.
Article
Engineering, Environmental
Qing Yang, Haiou Huang, Kuiling Li, Yujue Wang, Jun Wang, Xiaoyuan Zhang
Summary: This study investigated an electro-peroxone filtration (EPF) process for enhanced removal of pharmaceuticals and personal care products (PPCPs) through water-permeable electrodes. The EPF process demonstrated a higher removal efficiency compared to traditional peroxone filtration, making it a promising method for removing PPCPs from contaminated water.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Environmental Sciences
Shuning Chen, Kajia Wei, Yujue Wang, Jun Wang, Haiou Huang, Xia Huang, Bruce E. Logan, Xiaoyuan Zhang
Summary: The Bio-E-Peroxone system, which combines chemical and bioelectrochemical processes, demonstrated significant acceleration in pollutant degradation by generating H2O2 on the cathode and using ozone-enriched air. This integrated system showed superior efficiency compared to traditional ozonation or electrolysis methods, making it a promising approach for both wastewater treatment and electricity generation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Yang Guo, Jingfei Long, Jun Huang, Gang Yu, Yujue Wang
Summary: The commonly used quenching method may not be suitable for investigating the role of ROS in pollutant abatement during catalytic ozonation, as the quenchers can interfere with the reaction mechanism.
Article
Engineering, Environmental
Lingwei Gao, Yang Guo, Juhong Zhan, Gang Yu, Yujue Wang
Summary: This study evaluated the effects of various quenchers on the mechanism of a cobalt mediated peroxymonosulfate (Co(II)/PMS) process and found that these quenchers not only quench target reactive species but also cause interference effects. Therefore, caution should be exercised when applying the quenching method to investigate the mechanism of the persulfate-based process.
Article
Environmental Sciences
Quan Zheng, Yinqiao Zhang, Qianxin Zhang, Yujue Wang, Gang Yu
Summary: The electro-peroxone (EP) process is an electricity-based oxidation process that generates hydrogen peroxide (H2O2) from cathodic oxygen (O2) reduction to remove antibiotic resistant bacteria (ARB) and plasmid-encoded antibiotic resistance genes (ARGs). Compared to ozonation alone, the EP process exhibits higher center dot OH exposures but lower O3 exposures, resulting in a moderately decreased efficiency of ARB inactivation and ARG degradation. However, the EP process effectively cleaves plasmid DNA to shorter fragments, reducing the risks of natural transformation of ARGs. Consideration of the effects of the EP process on ARB and ARG inactivation is important for water treatment implementation.
Article
Engineering, Environmental
Yongshuang Ma, Erzhuo Zhao, Guangsen Xia, Juhong Zhan, Gang Yu, Yujue Wang
Summary: Electrochemically producing hydrogen peroxide (H2O2) from oxygen reduction reaction (ORR) with natural air diffusion electrode (NADE) is an attractive way for decentralized water treatment. However, the presence of calcium ions (Ca2+) in water matrices can cause significant deterioration of NADE stability during H2O2 electroproduction, leading to reduced current efficiencies. Proper strategies are needed to mitigate electrode fouling during H2O2 electroproduction in practical water and wastewater treatment.
Article
Engineering, Environmental
Yinqiao Zhang, Yang Guo, Jingyun Fang, Kaiheng Guo, Gang Yu, Yujue Wang
Summary: A probe compound-based kinetic model was developed to predict micropollutant (MP) abatement in various water matrices by the UV/chlorine process. This model allows for the calculation of the exposures of reactive chlorine species and hydroxyl radicals during the process based on the depletion of three probe compounds. The model can predict the abatement efficiencies of different MPs in different water matrices without prior calibration and provides insights into the abatement mechanism of MPs during UV/chlorine treatment.
Article
Engineering, Environmental
Yang Guo, Gang Yu, Urs von Gunten, Yujue Wang
Summary: Superoxide radicals (O-2(center dot-)) are important chain carriers in the radical chain reaction during ozonation, promoting the decomposition of ozone (O-3) to hydroxyl radicals ((OH)-O-center dot). This study used a probe compound and kinetic modeling to evaluate the role of O-2(center dot-) for O-3 decomposition during ozonation of synthetic solutions and natural waters. The results showed that O-2(center dot-) plays a critical role in promoting O-3 decomposition, with its contribution ranging from 45-70% depending on water composition.
Article
Engineering, Environmental
Huijiao Wang, Lingwei Gao, Yuxin Xie, Gang Yu, Yujue Wang
Summary: This study developed a probe compound-based experimental and kinetic model to clarify the role of singlet oxygen (O-1(2)) in persulfate-based advanced oxidation processes (PS-AOPs). The results showed that although O-1(2) has higher concentrations and exposures than sulfate radicals and hydroxyl radicals, its relative contribution to pollutant abatement is generally negligible compared to that of sulfate radicals and hydroxyl radicals.
Article
Engineering, Environmental
Jingfei Long, Yang Guo, Gang Yu, Sridhar Komarneni, Yujue Wang
Summary: Adding catalysts can enhance pollutant removal during ozonation experiments, but it is unclear whether it is due to increased (OH)-O-center dot yield or higher O-3 utilization efficiency. This study compared conventional ozonation and catalytic ozonation using carbon nanotube catalysts and found that while all the catalysts accelerated O-3 transfer and pollutant removal, many of them did not enhance the extent of removal when the same amount of O-3 was consumed. This suggests that the catalysts may not enhance pollutant removal in large-scale applications as they do in laboratory experiments.
ACS ES&T ENGINEERING
(2022)