Article
Engineering, Environmental
Boyue Lian, Qi Jiang, Shikha Garg, Yuan Wang, Yuting Yuan, T. David Waite
Summary: A 3D CFD model was developed to simulate the performance of continuous flow ozonation reactors. The dissolved ozone concentration is influenced by interphase transfer rate and self-decay rate. Increasing gas phase ozone concentration leads to an increase in the removal rate of organic contaminants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Hannah Milh, Xingyue Yu, Deirdre Cabooter, Raf Dewil
Summary: In this study, the efficiency of UV-based sulfate radical advanced oxidation processes (SR-AOP) and UV-based advanced reduction processes (ARP) in degrading ciprofloxacin (CIP) in wastewater was investigated. It was found that the UV/PS process was more efficient than the UV/PMS process in SR-AOPs, while the UV/sulfite process was the most efficient among ARPs. The optimal process parameters and the contribution of different reactive species were determined for each process.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Engineering, Environmental
Emil Bein, Bettina Seiwert, Thorsten Reemtsma, Jorg E. Drewes, Uwe Huebner
Summary: Several oxidative treatment technologies have been studied and applied for the removal of monocyclic hydroaromatic carbon from water. However, little is known about the formation of transformation products and their fate in biodegradation. This study demonstrates that O3/H2O2 treatment leads to less hydroxylated aromatic transformation products compared to UV/H2O2 treatment, and raises questions regarding the biodegradability of oxidation products. The study provides new insights into the oxidation of monocyclic aromatics and has implications for treatment applications.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Review
Engineering, Environmental
Akash P. Bhat, Parag R. Gogate
Summary: This article introduces advanced oxidation processes for the degradation of nitrogen-containing amino and azo compounds, summarizing the degradation efficiency, reaction mechanisms, treatment parameters, and intermediates of various categories of compounds. Highly ozone-reactive compounds include aromatic amines, aliphatic amines, N-containing dyes, and N-containing pesticides. Hybrid methods show synergistic effects and must be tailored for specific effluents.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Jie Zhang, Yuyin Wang, Yun Wang, Yang Bai, Xin Feng, Jiahua Zhu, Xiaohua Lu, Liwen Mu, Tingzhen Ming, Renaud de Richter, Wei Li
Summary: The paper highlights the urgency to reduce CH4 emissions to limit global warming, emphasizing the need for large-scale methane removal methods. It also discusses the challenges and prospects of solar-driven gas phase advanced oxidation processes for CH4 removal while proposing ideas to help make these processes deployable at a climate significant scale.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Engineering, Chemical
Francisco J. Real, Juan L. Acero, F. Javier Benitez, Esther Matamoros
Summary: This study investigates the elimination of neonicotinoid insecticides in water through ozone-based oxidation treatments. It is found that certain neonicotinoids can be partially degraded by ozone, with the degradation efficiency depending on the pH value and water constituents. Furthermore, advanced oxidation processes combining ozone with hydrogen peroxide or activated carbon show better performance in neonicotinoid removal compared to ozone alone.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Review
Engineering, Environmental
Ying Xue, Zhaohui Wang, Ravi Naidu, Richard Bush, Fei Yang, Jianshe Liu, Manhong Huang
Summary: This review reconciles conflicting data on the degradation of pollutants in the presence of halides by peroxygens-based AOPs. Halide ions were found to affect contaminants' degradation either negatively or positively, depending on various factors such as substrate properties and operating parameters. Further research is needed to understand the effect of halides on the simultaneous removal of multiple organic pollutants. Better AOP technologies should be selected to minimize adverse effects and take advantage of positive effects in order to reduce operating costs and emissions in saline environments.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Nguyen Tien Hoang, Vo Thang Nguyen, Nguyen Dinh Minh Tuan, Tran Duc Manh, Phuoc-Cuong Le, Dinh Van Tac, Fredrick M. Mwazighe
Summary: This study investigated the degradation of dyes using the UV/PS process and found that the degradation followed a first-order kinetic model. The pH of the solution and the presence of water matrices had an impact on the degradation efficiency. The study also compared the UV/PS process with UV/HOCl and UV/H2O2 processes and found that UV/PS had lower toxicity and was more beneficial for total organic carbon removal.
Article
Environmental Sciences
Fehmiye Gul Tokay Yilmaz, Gulen Tekin, Gulin Ersoz, Suheyda Atalay
Summary: Wastewater management is crucial for sustaining biological life in the future. This study focused on combining photo-Fenton-like oxidation and adsorption to improve the water quality of textile wastewater for reuse. The operational parameters were optimized and it was found that adsorption was necessary to make the treated water reusable in terms of organic content.
ENVIRONMENTAL POLLUTION
(2023)
Article
Biochemistry & Molecular Biology
Tomas Prostejovsky, Alena Kulistakova, Martin Reli, Radim Zebrak, Kamila Koci
Summary: The feasibility of using advanced oxidation processes (AOPs) for abatement of ammonia from livestock buildings was examined. Pilot plant experiments were conducted using a two-step unit containing a dry photolytic reactor (UV185/UV254/O-3) and a photochemical scrubber (UV254/H2O2). The unit efficiency was tested for different concentrations and air flows, and demonstrated high removal rates of ammonia, even at high flow rates. The combination of UV and ozone effectively removed ammonia from the aqueous phase without adjusting the pH. The cost efficiency of the technology was also assessed, showing promising results.
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2023)
Article
Chemistry, Physical
Tomas Prostejovsky, Martin Reli, Radim Zebrak, Tereza Konecna, Federico Salvadores, Milagros M. Ballari, Kamila Koci
Summary: Experimental study on the elimination of xylene using advanced oxidation process in a pilot plant demonstrated that xylene conversion decreases with increasing initial concentration and air flow rate. The mathematical model for the first step of the unit indicated that the main pathway of xylene elimination is through reactions with hydroxyl radicals. The pilot plant unit showed higher energy-cost efficiency for higher flow rates of waste gas, suggesting potential for the technology in removing organic compounds from the air with further studies needed.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Danilo Russo
Summary: With the increasing number of recalcitrant pollutants in wastewater treatment plants, microreactors are gaining more attention in the field of AOPs, offering new research opportunities for intrinsic kinetic parameter determination and by-product identification.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Environmental
Dongwon Cha, Sanghun Park, Min Sik Kim, Taewan Kim, Seok Won Hong, Kyung Hwa Cho, Changha Lee
Summary: This study demonstrates machine learning models based on the random forest algorithm for predicting the abatement of micropollutants during ozonation processes. The models use input variables such as pH, alkalinity, dissolved organic carbon concentration, and FEEM data, with high-resolution FEEM data showing higher prediction accuracy. Utilizing organic matter characteristics quantified by FEEM can improve the accuracy of the model in predicting oxidant exposures.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Green & Sustainable Science & Technology
Snigdha Khuntia, Manish Kumar Sinha, Parveen Dalal, Arunima Singh
Summary: The combination of ozone and UV irradiation in aqueous mode has been investigated for removing SO2 and NOX. Various combinations of ozone, flue gas, and UV irradiation power were attempted to achieve complete removal of flue gases. The amount of hydroxyl radicals generated by UV and O3 combination was measured. A comprehensive comparison of the contribution of oxidants such as ozone, UV, and hydroxyl radicals was depicted. To reduce power consumption, it is important to find a suitable route, which has been achieved by changing the operation mode of gases, resulting in over 95% NOX and almost 100% SO2 removal.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Environmental
Yu Lei, Yafei Yu, Xin Lei, Xi Liang, ShuangShuang Cheng, Gangfeng Ouyang, Xin Yang
Summary: Advanced oxidation processes (AOPs) are widely used for water and wastewater treatment. This study determined second order rate constants for reactions between probes and quenchers with various reactive species and chemical oxidants. Previously ill-quantified reactions were found to be favorable. The improved kinetic database and proposed criteria for probe and quencher selection and dosing will benefit future research in AOPs and other radical-involved reactions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Neelamegan Haridharan, Gang-Juan Lee, Sambandam Anandan, Andrea Sorrentino, Ya-Hui Chuang, Cheng-Hua Liu, Jerry J. Wu
Summary: In this study, a mesoporous polymer was prepared via RAFT polymerization for capturing greenhouse gas CO2. The synthesized porous phyllosilicate/polymer nanocomposites showed excellent performance in adsorbing CO2, making them suitable for reducing greenhouse gas levels in the atmosphere.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Chemistry, Physical
Zhenghao Qiao, Wenmin Wang, Na Liu, Hsin-Ting Huang, Lakshmanan Karuppasamy, Hsin-Ju Yang, Cheng-Hua Liu, Jerry J. Wu
Summary: With the shortage of global fossil energy and the increasing crisis of environmental deterioration, hydrogen energy has become an environmentally benign alternative as a clean energy source. In this study, the MOF/MOS2 composite photocatalyst demonstrated excellent photocatalytic stability and the highest hydrogen production capacity under the optimal synthesis conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Polymer Science
Neelamegan Haridharan, Dhivyasundar Sundar, Lakshmanan Kurrupasamy, Sambandam Anandan, Chen-Hua Liu, Jerry J. Wu
Summary: This article comprehensively reviews the application and development of polymeric adsorbents in oil spills remediation, discussing various methodologies, new concepts, and future perspectives.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Dhivyasundar Sundar, Lakshmanan Karuppasamy, Lakshmanan Gurusamy, Cheng-Hua Liu, Jerry J. Wu
Summary: Exploration of unusual functional materials such as perovskites-like composites and their derivatives for photocatalytic CO2 reduction is a key direction in clean and renewable energy research. While single perovskite materials have excellent properties, they also have drawbacks like lack of active sites, low stability in catalysis, and weak charge carrier extraction. By forming composites with different materials and systems, researchers are working on addressing these drawbacks to design and fabricate high-performance, selective, and stable perovskites-like composite catalysts.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2022)
Article
Environmental Sciences
Kai-Xuan Zheng, Cheng-Hua Liu, Sichao Wang, Yu-Min Tzou, Chih-Min Chiang, Shiou-Ruei Lin, Hsiao-Ying Yang, Jerry J. Wu, Ya-Hui Chuang
Summary: Castor cake, a by-product of castor oil extraction, is commonly used as an organic fertilizer. However, it contains a toxic alkaloid ricinine, which can be released into soils and taken up by crops, posing a potential threat to food safety and human health. This study investigated the release and metabolism of ricinine in soils after castor cake application.
Article
Materials Science, Multidisciplinary
Yu-Cheng Chang, Cheng-Jyun Zeng, Chin-Yi Chen, Chien-Yie Tsay, Gang-Juan Lee, Jerry J. Wu
Summary: Porous TiO2 nanofiber was successfully synthesized and hierarchical core-shell TiO2/NiS/Pt nanofiber was fabricated by depositing NiS and Pt nanoparticles on the surface of TiO2 nanofiber. The TiO2/NiS/Pt nanofiber showed enhanced photocatalytic activity for hydrogen evolution under visible light excitation, attributed to increased visible light absorption and efficient charge separation. The nanofiber also exhibited good stability and reusability in long-term photocatalytic process, and could be used under different water bases for photocatalytic hydrogen production.
MATERIALS RESEARCH BULLETIN
(2023)
Review
Chemistry, Inorganic & Nuclear
Lakshmanan Gurusamy, Lakshmanan Karuppasamy, Sambandam Anandan, Scott C. Barton, Ya-Hui Chuang, Cheng-Hua Liu, Jerry J. Wu
Summary: Defect engineering has been highly effective in improving the catalytic performance of nanomaterials in various applications. This review focuses on the role and detection of oxygen vacancies (OVs) in non-enzymatic electrochemical sensors. The methods for producing OVs in nanomaterials and the characterization techniques for identifying them are discussed. The adsorption energy between OVs and target substances is analyzed in detail through experimental findings and theoretical analyses. This evaluation is expected to contribute to the development of OVs nanocatalysts for detecting environmental pollutants in non-enzymatic electrochemical sensors.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Electrochemistry
Lakshmanan Karuppasamy, Lakshmanan Gurusamy, Sambandam Ananan, Scott C. Barton, Cheng-Hua Liu, Jerry J. Wu
Summary: In this study, a Fe2O3/ZnCo2O4 heterointerface nanocomposite derived from trimetallic metal-organic frameworks (MOFs) was reported as a promising electrode catalyst material for overall water splitting, including bifunctional HER and OER performances. The synergic effect or heterointerface engineering between Fe2O3 and ZnCo2O4 is advantageous for improved active sites, effective charge transfer, and long-term stability of the composite. The electrocatalyst shows enhanced HER and OER performances with low overpotentials of 44.8 mV and 212 mV, respectively.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Wen -Min Wang, Shi-Jer Tseng, Yu-Shuan Huang, Qian-Yuan Wu, Wen-Long Wang, Jerry J. Wu
Summary: Nitrate pollution in wastewater is a threat to human health and the environment. Photocatalytic reduction using a novel hollow-structured Pd/TiO2 photocatalyst shows high efficiency in removing nitrate and high selectivity for N2 yield.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Chien-Yie Tsay, Ching-Yu Chung, Chin-Yi Chen, Yu-Cheng Chang, Chi-Jung Chang, Jerry J. Wu
Summary: Bismuth vanadate (BiVO4), W-doped BiVO4 (BiVO4:W), and Mo-doped BiVO4 (BiVO4:Mo) nanoparticles were synthesized using a green hydrothermal method. The effects of W and Mo doping on the microstructure and optical properties of BiVO4 nanoparticles and their photocatalytic activity for Rhodamine B (RhB) degradation were investigated. The results showed that impurity doping could modify the surface morphology, reduce particle size, and increase the concentration of photogenerated charge carriers, leading to enhanced photocatalytic activity.
Article
Engineering, Chemical
Reshma Kaimal, Madappa C. Maridevaru, Aashutosh Dube, Jerry J. Wu, Anandan Sambandam, Muthupandian Ashokkumar
Summary: The study focuses on the development of a sensor for the detection of low levels of As(III) in water. By synthesizing borophene and modifying the glassy carbon electrode with it, high sensitivity detection of As(III) is achieved. The sensor is low-cost, highly selective, and has good repeatability, making it suitable for practical applications.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Review
Biochemistry & Molecular Biology
Dhivya Sundar, Cheng-Hua Liu, Sambandam Anandan, Jerry J. J. Wu
Summary: Carbon materials with different nanostructures and high surface area have emerging applications in electrocatalytic and photocatalytic CO2 utilization. However, the photocatalytic efficiency of pristine carbon is low, so it is usually combined with other materials to increase CO2 absorption and conversion. Carbon-based materials with transition metals and organometallic complexes are commonly used as photocatalysts for CO2 reduction.
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
Materials Science, Multidisciplinary
Ragini Pirarath, Belqasem Aljafari, Jerry J. Wu, Sambandam Anandan
Summary: A hydrothermal approach was used to synthesize petal-like MoS2 nanosheets with hexamethylenetetramine as the exfoliating agent. The MoS2 nanosheets showed high adsorption capabilities for tartrazine dye and mercury ions, removing 99% of the contaminants within 5 minutes and 6 hours, respectively. The Freundlich isotherm model and pseudo-first-order and pseudo-second-order kinetic models were found to be applicable for the adsorption processes.
BULLETIN OF MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Lakshmanan Gurusamy, Ru-Wen Cheng, Sambandam Anandan, Cheng-Hua Liu, Jerry J. Wu
Summary: A nonenzymatic electrochemical sensor based on CuO/ZnO-modified glassy carbon electrode (GCE) achieved super-sensitive detection of malathion. The sensor demonstrated outstanding stability and detection performance, offering a promising alternative technique for organophosphorus pesticide determination.
