Article
Engineering, Environmental
Xiaowu Dan, Zhiyong Luo, Mei Dai, Meng Zhang, Xiao Yue, Shili Xie
Summary: The study demonstrates that Fe(VI) can efficiently remove 4-CP in water treatment, with optimal degradation occurring at pH 9.20 and complete degradation of 4-CP achieved at a 5:1 mole ratio. The reaction rate of Fe(VI) with 4-CP is pH-dependent, with the rate-determining step being the reaction between deprotonated Fe(VI) and deprotonated 4-CP.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Mei Dai, Zhiyong Luo, Yiwen Luo, Qing Zheng, Bingwen Zhang
Summary: This study investigated the kinetics, performance, and mechanism of Fe(VI) oxidation degradation of 2,6-DCP, and found that Fe(VI) has efficient removal efficiency for 2,6-DCP, especially under higher molar ratio conditions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Dingxiang Wang, Zhen Zeng, Honglong Zhang, Jing Zhang, Ruopeng Bai
Summary: The study found that the reaction rate of Fe(VI) with fluoroquinolone antibiotics is strongly dependent on pH, reaching its maximum at around pH 6.5. In alkaline solution, high-valent iron species were identified as the major reactive species, while hydroxyl radicals were generated through Fenton or Fenton-like processes in acidic conditions with limited contribution.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Rouyi Wang, Ping Sun, Zhicai Zhai, Hui Liu, Ruirui Han, Hongxia Liu, Yingsen Fang
Summary: This study demonstrates the potential utility of ferrate(VI)-based advanced oxidation processes for the degradation of BP-4 UV filter. The operational parameters were determined and the effects of water constituents were investigated. The results showed that BP-4 removal rate could reach 95% under specific conditions.
Article
Engineering, Chemical
Jingjing Yao, Jiayi Wen, Haipu Li, Ying Yang, Hui Ying Yang
Summary: The complexation of tetracyclines with Fe species plays a significant role in the removal of tetracyclines by ferrate. Experimental results show that the complexation of tetracyclines with Fe3+ contributes to 79% of the overall removal, followed by oxidation (11%) and adsorption/flocculation (10%). Thermodynamic and kinetic calculations suggest that complexation reactions between Fe3+ and tetracyclines are more likely to occur than oxidation reactions between ferrate and hydroxyl radicals. The complexation rates of tetracyclines with Fe3+ determine the removal of multiple tetracyclines by ferrate, highlighting the importance of considering complexation in the removal of pollutants.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Cen Zhao, Luis E. Arroyo-Mora, Anthony P. DeCaprio, Dionysios D. Dionysiou, Kevin E. O. 'Shea, Virender K. Sharma
Summary: The study demonstrates the effective degradation of the cyanotoxin CYN and its model compound 6-HOMU using ferrate(VI) oxidation. The uracil ring of CYN is oxidized and cleaved, leading to the generation of nontoxic cylindrospermopsic acid. This method shows promise for the treatment of CYN and uracil-based toxins in drinking water.
Article
Engineering, Environmental
Bingru Tian, Nannan Wu, Mingzhu Liu, Zunyao Wang, Ruijuan Qu
Summary: Bisphenol B (BPB), as a substitute for bisphenol A, is widely present in the environment and poses a potential threat to environmental health. This study found that silver oxide nanoparticles greatly enhance the removal of BPB by ferrate. It was also observed that the presence of silver oxide reduces the toxicity of BPB oxidation intermediates to aquatic organisms.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Liwei Yang, Chao Hai, Heng Zhang, Can Feng, Mengfan Luo, Peng Zhou, Juntong Leng, Xinyuan Tian, Chuanliang Zhao, Bo Lai
Summary: This study investigated the degradation of methyl parathion using potassium ferrate. It was found that potassium ferrate has strong oxidation and adsorption abilities, and can completely degrade methyl parathion within a short period of time. Three conversion pathways of methyl parathion were proposed based on the identified by-products, and the toxicity of potassium ferrate-degraded methyl parathion was significantly reduced.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Yu Mao, Zhuo Chen, Yun Lu, Ke-Fan Cao, Yinhu Wu, Hong-Ying Hu
Summary: This study investigated the disinfection efficacy of Fe(VI) on different bacteria in various water matrices. The results showed that Fe(VI) was more effective against Gram-negative bacteria and performed better in a phosphate buffer. It was also observed that Fe(VI) primarily reacted with proteins. These findings contribute to a better understanding of the mechanisms behind Fe(VI) disinfection and provide useful information for its application in water disinfection.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Yu Li, Hefa Cheng
Summary: This study investigated the degradation kinetics, influence of water matrices, and transformation pathways of carbendazim (CBZ) in ferrate (Fe(VI)) oxidation. The results showed that Fe(VI) oxidation could efficiently remove CBZ in natural water matrices under near-neutral conditions.
Article
Environmental Sciences
Yu Mao, Zhuo Chen, Yun Lu, Ke-Fan Cao, Yin-Hu Wu, Hong-Ying Hu
Summary: This study systematically investigated the effects of pH, organic matters, and inorganic ions on Fe(VI) disinfection. Results showed that pH was the dominant influencing factor, and organic matters and inorganic ions had different effects on the inactivation of Escherichia coli.
ENVIRONMENTAL POLLUTION
(2024)
Article
Biotechnology & Applied Microbiology
Meng Zhang, Zhiyong Luo, Yiwen Luo, Jun Zhai, Zhihui Wang
Summary: The research comprehensively investigated the influence of pH on the degradation of 2,4,6-trichlorophenol (TCP) by ferrate(VI) (Fe(VI)), showing that Fe(VI) has significant potential to remove TCP and pH strongly influences TCP degradation by Fe(VI).
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Article
Chemistry, Inorganic & Nuclear
Jianhui Xie, Bing Li, Huijing Liu, Yijun Li, Jian-Bo He, Yanzhen Zheng, Kai-Chung Lau, Tai-Chu Lau
Summary: The study investigated the kinetics and mechanisms of ferrate oxidation on 4-alkylbenzenesulfonates using UV/Vis spectrophotometry. The results indicated that [Fe(O)(3)(OH)](-) is two orders of magnitude more reactive than [FeO4](2-) and is the predominant oxidant in neutral and slightly alkaline solutions. Additionally, a hydrogen atom transfer (HAT) mechanism was proposed for the reactions between [Fe(O)(3)(OH)](-) and 4-alkylbenzenesulfonates.
DALTON TRANSACTIONS
(2021)
Article
Engineering, Chemical
Xiaolei Teng, Yumeng Qi, Cheng Qin, Xiaosheng Tang, Chao Yan, Zunyao Wang, Ruijuan Qu
Summary: This study systematically investigated the oxidative degradation of chlorophene (CP) and 4-tert-butylphenol (4-tBP) in the presence of fer-rate (Fe(VI)). The reactions of the two phenols were found to be more efficient in mixed solution compared to single solution. Liquid chromatography-time-of-flight-mass spectrometry (LC-TOF-MS) analysis identified the reaction intermediates and proposed three possible pathways for the transformation of CP and 4-tBP. The density functional theory (DFT) calculations further elucidated the mechanism of hydroxylation and coupling product formation. The salt bridge experiment confirmed enhanced electron transfer between the organic pollutants and Fe(VI) in the mixture solution.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Engineering, Environmental
Xianbing Zhang, Mingbao Feng, Cong Luo, Nasri Nesnas, Ching-Hua Huang, Virender K. Sharma
Summary: This study investigated the oxidation of recalcitrant micropollutants by combining Fe-VI and Fe(III), finding that the addition of Fe(III) enhances the oxidation process. Fe-IV was identified as the main species contributing to the increase in ATL removal, with natural organic matter inhibiting the removal of pollutants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Environmental Sciences
Jinbo Liu, Chi Zhang, Hanzhong Jia, Eric Lichtfouse, Virender K. Sharma
Summary: This paper reviews the dissipation of PAHs in soils through abiotic processes such as photodegradation and oxidation. It discusses the role of soil components in degradation rates, pathways, and mechanisms, as well as the potential risks of abiotic transformations.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Cheng Chen, Yongyi Wang, Yajing Huang, Jian Hua, Wei Qu, Dehua Xia, Chun He, Virender K. Sharma, Dong Shu
Summary: This study found that pollutants containing phenolic moiety can greatly enhance the efficiency of the Fe(III)/H2O2 system without catalyst in degrading pollutants. Kinetics analysis revealed the self-catalytic degradation of the pollutants, with the best performance observed at pH 4.0. Spectroscopic measurements and theoretical calculations revealed a previously overlooked self-catalytic mechanism involving the formation of a yellow-colored high-spin P-Fe(III)-OOH complex, which subsequently converts to Fe(II). The oxidation of phenolic moiety generates hydroquinone, which also facilitates the cycling of Fe(III)/Fe(II) and the generation of hydroxyl radicals responsible for efficient decontamination.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Biochemistry & Molecular Biology
Adam Tolgyesi, Attila Cseh, Andrea Simon, Virender K. Sharma
Summary: The study aimed to develop a method for analyzing multiple groups of food contaminants, including 266 pesticides, 12 mycotoxins, 14 alkaloid toxins, and 3 Alternaria toxins. The method used QuEChERS sample preparation and LC-MS/MS analysis under alkaline mobile phase conditions. The developed method has been successfully validated through satisfactory analyses of various quality control, proficiency test, and validation samples.
Review
Chemistry, Physical
Manpreet Kaur Ubhi, Manpreet Kaur, Jaspreet Kaur Grewal, Virender K. Sharma
Summary: This article reviews the different synthesis routes of phosphorous- and boron-doped graphene and their applications in supercapacitors, lithium-ion batteries, and electronic devices such as fuel and solar cells. The direct and post-treatment methods are discussed, with the latter offering a more stable and controllable technique that preserves the original graphene structure. The review also highlights the latest progress in using phosphorous and boron-doped graphene for energy-related applications.
Review
Environmental Sciences
Nisha Singh, Meshal M. Abdullah, Xingmao Ma, Virender K. Sharma
Summary: The increasing use of plastic products in agriculture has led to the accumulation of microplastics and nanoplastics in agricultural soils, which raises concerns about their impact on soil health, crop productivity, and food safety. The interaction between plants, soil, and microplastics/nanoplastics can negatively affect plant growth and induce oxidative stress. However, the current knowledge about the fate and impact of microplastics/nanoplastics in the plant-soil nexus is limited, hindering further progress in this field. This review aims to address this gap by summarizing the sources, investigation techniques, impact on soil properties, accumulation in plants, and possible phytotoxicity mechanisms of microplastics/nanoplastics in agriculture.
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Christopher V. Marbaniang, Krishnamoorthy Sathiyan, Thomas J. McDonald, Eric Lichtfouse, Poulami Mukherjee, Virender K. Sharma
Summary: The global contamination of water resources by organic contaminants necessitates the development of advanced remediation techniques. Conventional water treatments are inadequate and can produce toxic byproducts. Safer alternatives, such as treatment with ferrate, are required. This review focuses on the synthesis and activation of ferrate(VI), specifically discussing different synthesis methods and the activation of ferrate(VI) by various metal ions. The most effective systems for removing organic contaminants from contaminated water are compared.
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Environmental
Aswin Kottapurath Vijay, Vered Marks, Amir Mizrahi, Yinghao Wen, Xingmao Ma, Virender K. Sharma, Dan Meyerstein
Summary: This study investigated the kinetics and mechanisms of the reactions between Feaq II and PMS or PDS at different pH values, as well as the influence of bicarbonate (HCO3-). The results showed that FeaqIV was the dominant oxidizing species in the absence of HCO3-. In the presence of environmentally relevant concentrations of HCO3-, carbonate radical anion (CO3 center dot-) became the dominant reactive species. These findings provide insights for advancing persulfate-based advanced oxidation processes (AOPs) in oxidizing pollutants in natural water.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Juhee Kim, Junyue Wang, Daniel C. Ashley, Virender K. Sharma, Ching-Hua Huang
Summary: This study discovers that the biodegradable chelating ligand picolinic acid (PICA) can effectively mediate the activation of peracetic acid (PAA) by manganese (II), leading to accelerated degradation of micropollutants. The PAA-Mn(II)-PICA system is capable of rapidly removing various micropollutants in clean and wastewater matrices. High-valent manganese species (Mn(V)) is identified as the main reactive species contributing to the rapid degradation of micropollutants.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Virender K. Sharma, Zoltan Homonnay, Tetsuaki Nishida, Jean-Marc Greneche
Summary: Since its discovery in the mid-twentieth century, Fe-57 Mossbauer spectrometry has been widely applied in various scientific fields, offering a local probe technique with high atomic scale sensitivity and low cost facilities. This article introduces the application of Mossbauer spectrometry in studying laboratory-made and natural materials, demonstrating its significant contribution in understanding synthesis mechanisms and chemical/physical properties.
JOURNAL OF MATERIALS RESEARCH
(2023)
Article
Chemistry, Physical
Virender K. Sharma, Junyue Wang, Mingbao Feng, Ching-Hua Huang
Summary: The occurrence of micropollutants in water poses a threat to public health and the environment. The addition of certain amino acids can enhance the removal efficiency of these micropollutants by ferrate(VI).
JOURNAL OF PHYSICAL CHEMISTRY A
(2023)
Article
Engineering, Environmental
Mingzhu Liu, Nannan Wu, Xiaoyu Li, ShengNan Zhang, Virender K. Sharma, Jamaan S. Ajarem, Ahmed A. Allam, Ruijuan Qu
Summary: This study investigated the oxidation reaction of benzophenones, commonly used UV filters, by the oxidant potassium permanganate (KMnO4). The addition of potassium permanganate enhanced the reaction rate and efficiency. The degradation of benzophenones involved hydroxylation, bond breaking, polymerization, and carboxylation processes. Toxicity assessments revealed that the intermediate products formed during the degradation process posed a decreasing ecological risk.
Article
Engineering, Environmental
Cen Zhao, Luis E. Arroyo-Mora, Anthony P. DeCaprio, Dionysios D. Dionysiou, Kevin E. O. 'Shea, Virender K. Sharma
Summary: The study demonstrates the effective degradation of the cyanotoxin CYN and its model compound 6-HOMU using ferrate(VI) oxidation. The uracil ring of CYN is oxidized and cleaved, leading to the generation of nontoxic cylindrospermopsic acid. This method shows promise for the treatment of CYN and uracil-based toxins in drinking water.
Review
Engineering, Chemical
Poulami Mukherjee, Krishnamoorthy Sathiyan, Tomer Zidki, Mallikarjuna N. Nadagouda, Virender K. Sharma
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Untika Pengsomjit, Waleed Alahmad, Pakorn Varanusupakul, Sibel A. Ozkan, Virender K. Sharma, Charoenkwan Kraiya
Summary: This paper presents a greener methodology for determining streptomycin in honey using gel electromembrane extraction (G-EME) technique with exfoliated graphene (EG). The addition of EG enhances the extraction efficiency and sensitivity. The problem of increased electric current and electroendosmosis due to graphene-based nanomaterials is solved by tuning the acceptor phase's volume.
Review
Chemistry, Multidisciplinary
Virender K. Sharma, Xingmao Ma, Radek Zboril
Summary: Water is a crucial component of the United Nations' sustainable development goals, and water reuse is becoming increasingly accepted in response to global water scarcity. However, traditional treatment processes face challenges in treating low concentrations of pollutants in the presence of other chemicals. Advanced oxidation processes and the use of single atom catalysts offer promising solutions to these challenges.
CHEMICAL SOCIETY REVIEWS
(2023)
