"Blockchain-Like" MIL-101(Cr)/Carbon Black Electrodes for Unprecedented Defluorination by Capacitive Deionization.
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DOI: 10.1002/smll.202205619
Abstract: Metal-organic frameworks (MOF) have attracted extensive attention due to their ultra-high specific surface area and tunable structure, the mechanism of direct utilization for capacitive deionization (CDI) defluorination remains undefined. Here, MIL-101(Cr) with ultra-high specific surface… read more here.
Keywords: mof; carbon black; capacitive deionization; defluorination ... See more keywords
Vitamin B12 (CoII) initiates the reductive defluorination of branched perfluorooctane sulfonate (br-PFOS) in the presence of sulfide
Sign Up to like & getrecommendations! Published in 2021 at "Chemical Engineering Journal"
DOI: 10.1016/j.cej.2021.130149
Abstract: Abstract Due to the extremely high stability of perfluorooctane sulfonate (PFOS), effective defluorination is difficult. Previous studies indicated that PFOS can be decomposed under the catalysis of vitamin B12 (VB12) with strong artificial reductants such… read more here.
Keywords: perfluorooctane sulfonate; defluorination; vitamin b12; pfos ... See more keywords
Ozonation of norfloxacin and levofloxacin in water: Specific reaction rate constants and defluorination reaction.
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DOI: 10.1016/j.chemosphere.2017.12.079
Abstract: The degradation kinetics and mechanism of two typical fluoroquinolones (FQs), norfloxacin (NF) and levofloxacin (LOF), by ozone in water were investigated. Semi-continuous mode and competition kinetics mode experiments were conducted to determine the reaction rate… read more here.
Keywords: defluorination; rate constants; ozonation; reaction rate ... See more keywords
Defluorination by ion exchange of SO42- on alumina surface: Adsorption mechanism and kinetics.
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DOI: 10.1016/j.chemosphere.2021.129678
Abstract: Electrostatic and complexation effects have been considered as the primary adsorption mechanisms for defluorination using aluminum based materials, while the effect of ion exchange between anions and fluorine ion has been mostly ignored, although synthesized… read more here.
Keywords: adsorption; ion exchange; defluorination; exchange so42 ... See more keywords
Defluorination behaviors using different types of aluminum salts: The effect of SO42–
Sign Up to like & getrecommendations! Published in 2021 at "Colloids and Surfaces A: Physicochemical and Engineering Aspects"
DOI: 10.1016/j.colsurfa.2021.126768
Abstract: Abstract In order to explore the effect of SO42– in natural water on the defluorination behaviors of different types of aluminum salts, a coagulation experiment by simulating raw water in the laboratory was conducted. After… read more here.
Keywords: so42; content; different types; defluorination ... See more keywords
Mechanism of fluoride removal by AlCl3 and Al13: The role of aluminum speciation.
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DOI: 10.1016/j.jhazmat.2020.122987
Abstract: Coagulation is an important defluorination process. However, because of the poor sedimentation properties, conventional coagulants often result in limited defluorination performance and excessive residual aluminum. In this study, AlCl3 and the highly-positively-charged molecule [AlO4Al12(OH)24(H2O)12]7+ (Al13)… read more here.
Keywords: defluorination; fluoride removal; aluminum speciation; role aluminum ... See more keywords
Desulfonation and defluorination of 6:2 fluorotelomer sulfonic acid (6:2 FTSA) by Rhodococcus jostii RHA1: Carbon and sulfur sources, enzymes, and pathways.
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DOI: 10.1016/j.jhazmat.2021.127052
Abstract: 6:2 fluorotelomer sulfonic acid (6:2 FTSA) is one per- and poly-fluoroalkyl substances commonly detected in the environment. While biotransformation of 6:2 FTSA has been reported, factors affecting desulfonation and defluorination of 6:2 FTSA remain poorly… read more here.
Keywords: ftsa; defluorination; rha1; sulfur ... See more keywords
Structural Dependence of Reductive Defluorination of Linear PFAS Compounds in a UV/Electrochemical System.
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DOI: 10.1021/acs.est.0c02773
Abstract: Per and polyfluoroalkyl substances (PFAS), legacy chemicals used in firefighting and the manufacturing of many industrial and consumer goods, are widely found in groundwater resources, along with other regulated compounds, such as chlorinated solvents. Due… read more here.
Keywords: reductive defluorination; pfas; defluorination; dependence reductive ... See more keywords
Microbial Cleavage of C-F Bonds in Two C6 Per- and Polyfluorinated Compounds via Reductive Defluorination.
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DOI: 10.1021/acs.est.0c04483
Abstract: The C-F bond is one of the strongest single bonds in nature. Although microbial reductive dehalogenation is well known for the other organohalides, no microbial reductive defluorination has been documented for perfluorinated compounds except for… read more here.
Keywords: reductive defluorination; two per; defluorination; polyfluorinated compounds ... See more keywords
Near-Quantitative Defluorination of Perfluorinated and Fluorotelomer Carboxylates and Sulfonates with Integrated Oxidation and Reduction.
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DOI: 10.1021/acs.est.1c00353
Abstract: The UV-sulfite reductive treatment using hydrated electrons (eaq-) is a promising technology for destroying perfluorocarboxylates (PFCAs, CnF2n+1COO-) in any chain length. However, the C-H bonds formed in the transformation products strengthen the residual C-F bonds… read more here.
Keywords: reduction; near quantitative; oxidation; defluorination ... See more keywords
Microbial Defluorination of Unsaturated Per- and Polyfluorinated Carboxylic Acids under Anaerobic and Aerobic Conditions: A Structure Specificity Study
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DOI: 10.1021/acs.est.1c05509
Abstract: The recently discovered microbial reductive defluorination of two C6 branched and unsaturated fluorinated carboxylic acids (FCAs) provided valuable insights into the environmental fate of per- and polyfluoroalkyl substances (PFASs) and potential bioremediation strategies. However, a… read more here.
Keywords: structure; anaerobic aerobic; defluorination; reductive defluorination ... See more keywords