Article
Engineering, Environmental
Heng Zhang, Mengfan Luo, Peng Zhou, Yang Liu, Ye Du, Chuanshu He, Gang Yao, Bo Lai
Summary: The study revealed that using CaO2 as a slow-releasing reagent of H2O2 can enhance the reactivity of Fe(VI) in removing SMX, showing better oxidation performance. The Fe(VI)-CaO2 system exhibited superior performance in degrading contaminants and applicability in authentic water.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Lijun Niu, Jiang Lin, Wenzheng Chen, Qian Zhang, Xin Yu, Mingbao Feng
Summary: This study presents the combination of ferrate(VI) (Fe(VI)) and periodate (PI) as an effective and selective oxidation method for the elimination of organic micropollutants in water. The Fe(VI)/PI system outperforms other Fe(VI)/oxidant systems in rapid water decontamination. The study also highlights the unexpected interactions between PI/iodate and Fe(VI) that enhance the oxidation efficiency.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jiamin Mai, Tao Yang, Jun Ma
Summary: This paper presents a novel process using solar-ferrate(VI) for efficient degradation of micropollutants. The study found that Fe(V) and Fe(IV), rather than reactive oxygen species, played a significant role in the process. The researchers also elucidated the reaction mechanism of Fe(VI) and its degradation of micropollutants. Additionally, the study investigated the effect of pH and various ions on the degradation process. The solar-ferrate(VI) process demonstrated excellent applicability under different irradiation conditions.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Engineering, Environmental
Bao Pan, Mingbao Feng, Jiani Qin, Afzal Ahmed Dar, Chuanyi Wang, Xingmao Ma, Virender K. Sharma
Summary: This study investigated the visible light-induced oxidation of micropollutants using g-C3N4 photocatalyst and ferrate(VI) under mild alkaline conditions. The results showed enhanced oxidation of micropollutants by the combined system compared to using g-C3N4 or ferrate(VI) alone, providing a new advanced oxidation process for efficient degradation of micropollutants in water.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Chemical
Haiyang He, Yulei Liu, Lu Wang, Wei Qiu, Zhicen Liu, Jun Ma
Summary: This study reveals that NaClO can react with intermediate iron species, Fe(V) and Fe(IV), to regenerate Fe(VI), improving the oxidizability of Ferrate(VI) on organic substances. NaClO2, on the other hand, reduces Fe(VI) to form more intermediate iron species, enhancing the degradation rate of SMX and CBZ initially.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Environmental
Tao Yang, Jiamin Mai, Haijun Cheng, Mengyang Zhu, Sisi Wu, Liuyan Tang, Ping Liang, Jianbo Jia, Jun Ma
Summary: This study investigated the use of UVA-LED in combination with Fe(VI) for degrading micropollutants, showing significant enhancement compared to Fe(VI) alone. Factors such as wavelength, light intensity, and pH were found to influence the degradation performance.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Environmental
Ji Shu, Kanming Wang, Virender K. Sharma, Xiping Xu, Nasri Nesnas, Hongyu Wang
Summary: This paper introduces the Fe(VI)-Ti/Zn layered double hydroxide (Fe(VI)-Ti/Zn LDH) composite as a catalyst to degrade organic pollutants under visible light. The Fe(VI)-LDH/VL system effectively activates Fe(VI) and enhances electron-hole separation and migration on the Ti/Zn LDH surface. The in-situ heterojunction photocatalyst formed by adsorbing Fe(III) particles onto the LDH surface further oxidizes pollutants. The study demonstrates the potential of Fe(VI)-Ti/Zn LDH composite in water purification.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Binbin Shao, Jing Deng, Hongyu Dong, Shuchang Wang, Enchao Li, Xiaohong Guan
Summary: Recent research has discovered that the iron(III)-(1,10-phenanthroline) complex can act as an activator, enhancing the degradation of emerging organic contaminants (EOCs) by Fe(VI) and increasing its overall oxidation capacity. This is achieved through direct electron transfer (DET) and electron shuttle action.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhuang-Song Huang, Lu Wang, Yu-Lei Liu, Hong-Yan Zhang, Xiao-Na Zhao, Yang Bai, Jun Ma
Summary: This study elucidated the crucial role of ferrate self-decomposition in oxidation reactions and developed a mechanistic kinetics model to understand the involvement of Fe(V), Fe(VI), and Fe(IV) species in the oxidation of PMSO. Results showed that the Fe(V) species derived from ferrate self-decomposition contributed significantly to PMSO oxidation, while the oxidation pathways of Fe(VI) and Fe(V) were influenced by different factors. The findings suggest the general role of Fe(V) and the potential enhancement by Fe(III) during ferrate oxidation of micropollutants.
Article
Engineering, Environmental
Guang Li, Jinchan Jiang, Maoxia He, Dandan Rao, Jian Zhang, Bo Sun
Summary: This study investigates the formation of bromate (BrO3(-)) in the presence of Fe(VI) and bromide(Br-), challenging previous beliefs about the role of Fe(VI) as a green oxidant and highlighting the crucial role of intermediates Fe(V) and Fe(IV) in the conversion of Br- to BrO3(-). The results show that Fe(V)/Fe(IV) plays a positive role in the conversion and its contribution is pH dependent. The study suggests that the conversion of Br- involves a single-electron transfer from Br- to Fe(V)/Fe(IV) and the generation of reactive bromine radicals.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Qin He, Yangjie Fu, Xueying Ge, Abdullah M. Al-Enizi, Ayman Nafady, Qi Wang, Shengqian Ma
Summary: By using mixed ligands to form a complex with Fe(III), the Fe-BDC/Fe-2MI composite was optimized at a specific molar ratio, leading to improved photoelectrochemical properties and enhanced photocatalytic activity for Cr(VI) reduction. The heterojunction structure resulted in a significantly higher pseudo-first-order rate constant for Fe-BDC/Fe-2MI compared to Fe-BDC and Fe-2MI, demonstrating superior performance with minimal loss in activity after multiple cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Sean T. McBeath, Yi Zhang, Michael R. Hoffmann
Summary: Difficulties arise in applying conventional water treatment technologies to small and remote systems due to economic scale and practicability issues. Electro-oxidation (EO) emerges as a promising oxidation technology for these applications, degrading contaminants through direct, advanced, and/or electrosynthesized oxidant-mediated reactions. Ferrates, particularly Fe(VI)/(V)/(IV), are of interest and recently their circumneutral synthesis has been demonstrated using boron-doped diamond (BDD) electrodes. This study investigates ferrate synthesis using various high oxygen overpotential (HOP) electrodes (BDD, NAT/Ni-Sb-SnO2, and AT/Sb-SnO2).
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Zhongjuan Wang, Ye Du, Yanni Jiang, Jie Li, Chuanshu He, Yang Liu, Zhaokun Xiong, Bo Lai
Summary: This study found that ferrate could efficiently degrade fluoroquinolones, but their cytotoxicity to mammalian cells dramatically increased after reacting with ferrate. The research also revealed the important role of high-valent iron intermediates in the degradation of micropollutants.
ACS ES&T ENGINEERING
(2023)
Article
Chemistry, Physical
Fanny E. K. Okaikue-Woodi, Jessica R. Ray
Summary: A Fe(vi)-coated sand water treatment media was developed by coating potassium ferrate onto sand. This media showed higher efficiency in removing organic compounds from wastewater compared to traditional SiO2 gels. It provides a cost-effective and eco-friendly alternative for Fe(vi) deployment in water treatment systems.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Environmental
Cong Luo, Manasa Sadhasivan, Juhee Kim, Virender K. Sharma, Ching-Hua Huang
Summary: This study systematically investigated the reaction kinetics of Fe(VI) oxidation of ABTS and proposed a comprehensive kinetic model including interactions between high-valent iron species and ABTS. The study successfully determined the reactivity of Fe(V) to different substrates. Overall, the improved Fe(VI)-ABTS kinetic model provides a useful tool for quantitatively probing Fe(V)/Fe(IV) behaviors in Fe(VI) oxidation.
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, Multidisciplinary
Yinghao Wen, Eric Lichtfouse, Virender K. Sharma, Xingmao Ma
Summary: The persistence of recalcitrant pollutants in water is a major health issue. This study investigated the effect of phosphate on the degradation of atrazine by peroxydisulfate under visible light. The presence of phosphates was found to significantly decrease the efficiency of atrazine removal, due to the formation of less reactive phosphate radicals.
ENVIRONMENTAL CHEMISTRY LETTERS
(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
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
Chemistry, Multidisciplinary
Shengqi Zhang, Kaiting Zhang, Yuwei Xie, Yao-Yin Lou, Eric Lichtfouse, Mingbao Feng, Virender K. Sharma
Summary: The demand for clean water is increasing worldwide, but wastewater decontamination is limited by refractory organic and inorganic compounds, requiring more efficient treatment methods. This review discusses the use of ruthenium-based catalysts for polluant removal or transformation at a concentration range of 1.0-100 mg/L under acid or neutral conditions. Various catalytic oxidation and reduction methods, as well as the environmental impact of ruthenium catalysts, are examined, including electrooxidation, photocatalytic oxidation, activation of inert oxidants, hydrogen-assisted reduction, electroreduction, and N-O bond activation.
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Engineering, Environmental
Binglin Guo, Junyue Wang, Krishnamoorthy Sathiyan, Xingmao Ma, Eric Lichtfouse, Ching-Hua Huang, Virender K. Sharma
Summary: Low levels of natural organic matter (NOM) enhance removal of trimethoprim and sulfamethoxazole by ferrate(VI) through the formation of more reactive Fe(V) species. The presence of antibiotics in water sources threatens public health and ecosystems. Nine types of NOM and NOM model compounds were found to improve the removal of trimethoprim and sulfamethoxazole by ferrate(VI) under mild alkaline conditions, possibly due to the presence of phenolic moieties in NOMs. The formation of Fe(V) through single-electron transfer from NOM to Fe(VI) generates NOM radicals within milliseconds, resulting in the enhanced removal of antibiotics despite concurrent reactions between Fe(V) and NOM moieties, radicals, and water. Humic and fulvic acids from lake and river waters also showed similar results, supporting the enhanced abatement of antibiotics in real water situations.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
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)