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
Environmental Sciences
Xinyi Zhang, Ying Zhao, Cong Qv, Xuhui Mao
Summary: Ferrate fortified with ferrous iron is effective in enhancing the degradation of tetracycline (TC) during the coagulation process. The optimization of experimental conditions in the ferrate and ferrate-ferrous system is investigated. The removal of TC reaches up to 85% at a molar ratio of ferrate to TC of 2.5:1 under initial pH 4-9. The performance of the ferrate-ferrous system is superior to that of ferrate or ferrous alone, and the morphology and composition of flocs formed by ferrous and ferrate-ferrous systems are examined. The stability of flocs is influenced by the initial pH, with better stability under alkaline conditions for the ferrate-ferrous system and better stability under acidic conditions for ferrous. The stability of the flocs is related to their composition and structure, with approximately 26% to 37.3% of α-FeOOH formed by Fe(VI)-Fe(II) and 63% to 74% of γ-FeOOH. The knowledge gained from this research enhances the flocculation effect of ferrate and its ability for sustainable oxidative degradation of pollutants.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Engineering, Environmental
Charles D. Spellman, Sahar Da 'Er, Kaoru Ikuma, Isabella Silverman, Joseph E. Goodwill
Summary: Sulfite-activated ferrate is a promising emerging water treatment technology that can effectively oxidize contaminants and disinfect pathogens. Sub-stoichiometric activation shows good performance, while excessive activation leads to decreased treatment efficiency and increased byproduct formation.
Article
Engineering, Environmental
Yongkui Yang, Xiaoke Ma, Shaoyi Zhang, Xiao Luo, Hongzhi Geng, Jiashu Liu, Xuejiao Tong, Youjun Zhang, Peizhe Sun, Lin Zhao
Summary: This study aimed to enhance the removal of trichloroethylene (TCE) using Fe(VI) by investigating the synergistic action of a ferrate-biochar system. The addition of biochar significantly enhanced TCE removal by Fe(VI), providing a promising strategy for improving the TCE removal efficiency with lower oxidant consumption and less negative ecological impacts compared to individual and excessive chemical oxidation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Xiaochun Yang, Yu Yang, Xu Han, Yonghai Jiang, Beidou Xi, Han Xiao, Xiangjian Xu, Yuhan Hu, Sheng Deng, Jio Zhang
Summary: This study demonstrated the enhanced degradation performance of tetracycline hydrochloride (TC) using in situ prepared ferrate solution (Fe(VI)s). The study compared Fe(VI)s with ferrate precipitation (Fe(VI)p) and commercial ferrate (Fe(VI)c) and found that Fe(VI)s achieved a much higher degradation rate of TC. Electron paramagnetic resonance (EPR) and probe experiments confirmed that Fe(IV)/Fe(V) were the main active species in Fe(VI)s, while ⋅OH and ⋅O-2 were the main active substances in Fe(VI)c. A degradation pathway for TC was proposed based on LC-MS/MS analysis.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
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, 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
Environmental Sciences
Yanghan Chen, Qiuye Jin, Zhaomin Tang
Summary: This study investigated the degradation performance of ofloxacin (OFX) using potassium ferrate (Fe(VI)). It was found that the presence of Fe3+ and NH4+ significantly promoted the degradation of OFX by Fe(IV), while humic acid (HA) inhibited it. Under specific conditions, Fe(VI) efficiently degraded OFX, and two possible degradation pathways were proposed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
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
Chemistry, Multidisciplinary
Neethu Christudas Dargily, Giddaerappa Kuntoji, Rahul Mahadeo Mendhe, Akshay Haridas, Ravikumar Thimmappa, Surbhi Sharma, Musthafa Ottakam Thotiyl
Summary: This study presents a concept of a zinc-air battery where the in situ transformation of hydrogen peroxide produced on battery discharge to highly reactive hydroxyl radicals is used for pollutant degradation and electric power production.
Article
Engineering, Environmental
Yunpeng Wang, Zijun Xiao, Yulei Liu, Wenjie Tian, Zhuangsong Huang, Xiaona Zhao, Lu Wang, Shaobin Wang, Jun Ma
Summary: This study found that carbon quantum dots (CQDs) played a significant role in the water purification process using Fe(VI) as a catalyst. CQDs facilitated direct electron transfer (DET) from organic pollutants to Fe(VI), improving the oxidation efficiency and alleviating the negative impact of solution pH and background constituents.
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
Charles D. Spellman Jr, Joseph E. Goodwill
Summary: Ferrate is a promising green technology for water treatment, but research on its potential benefits in water reuse is limited. Recent studies have shown that sulfite-activated ferrate can improve treatment processes. This study evaluated the viability of sulfite-activated ferrate in water reuse treatment and found that it can produce effluents meeting regulatory requirements without major impacts on downstream processes. Activation of ferrate showed improvements such as lower byproduct yields, although it increased headloss in the filtration system. Overall, sulfite-activated ferrate is a viable option for water reuse, with improved water quality outcomes.
Article
Engineering, Environmental
Kyriakos Manoli, Ruobai Li, Juhee Kim, Mingbao Feng, Ching-Hua Huang, Virender K. Sharma
Summary: This study introduces a Fe(VI)-peracetic acid oxidation process for rapid degradation of micropollutants in water, showing great potential for water treatment applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
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
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
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
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.
Article
Chemistry, Physical
Jingxuan Ma, Nishal M. Egodawaththa, Charitha Guruge, Oriana A. Valladares Marquez, Molly Likes, Nasri Nesnas
Summary: This study reports the efficient preparation of 11 caged Glu examples that respond to two visible wavelengths and investigates their photo-uncaging kinetics. One of the BODIPY cages shows the most efficient Glu release.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
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)
