• The present study explored the effects of HAP crystal orientation in methane oxidation reactions, which revealed distinct catalytic behaviors of crystal surfaces in HAP-based materials. (osti.gov)
  • An overview of aqueous-phase catalytic processes for production of hydrogen and alkanes in a bio refinery has been shown by Huber and Dumesic [ 8 ]. (hindawi.com)
  • The study was undertaken to compare from technical and economic point of view the treatment of antibiotic aqueous solution containing amoxicillin, ampicillin, and cloxacillin by Fenton, photo-Fenton, TiO2 photocatalytic and UV/ZnO processes. (utp.edu.my)
  • On-the-Fly Kinetic Monte Carlo Simulation of Aqueous Phase Advanced Oxidation Processes. (bvsalud.org)
  • We have developed an on-the- fly kinetic Monte Carlo (KMC) model to predict the degradation mechanisms and fates of intermediates and byproducts that are produced during aqueous-phase advanced oxidation processes (AOPs). (bvsalud.org)
  • 1] R. Andreozzi, V. Caprio, A. Insola and R. Marotta: "Advanced oxidation processes (AOP) for water purification and recovery", Catalysis Today, Vol. 53, (1999), pp. 51-59. (edu.pl)
  • 3] N. Azbar, T. Yonar and K. Kestioglu: "Comparison of various advanced oxidation processes and chemical treatment methods for COD and color removal from a polyester and acetate fiber dyeing effluent", Chemosphere, Vol. 55, (2004), pp. 35-43. (edu.pl)
  • The kinetics of oxidation of NiIIL by Br2- and OH radicals in aqueous solutions were studied. (bgu.ac.il)
  • Activity and stability of these materials were assessed on the photo-Fenton degradation of phenolic aqueous solutions by H 2 O 2 using near UV irradiation (254 nm) at room temperature and initial neutral pH. (matec-conferences.org)
  • This electrode produces large quantities of hydroxyl radicals from oxidation of water, which leads to the oxidative degradation of propham up to its total mineralization. (anadolu.edu.tr)
  • Further characterization of Trp-14 using chloroplast transformation in Chlamydomonas indicated that substitution of D1 Trp-14 to Phe, mimicking Trp oxidation enhanced FtsH-mediated D1 degradation under high light, although the substitution did not affect protein stability and PSII activity. (elifesciences.org)
  • Together, our results suggest that the Trp oxidation at its N-terminus of D1 may be one of the key oxidations in the PSII repair, leading to processive degradation by FtsH. (elifesciences.org)
  • While this system is well known to cope with photoinhibition, the actual oxidation within the D1 polypeptide and its association to degradation remained elusive. (elifesciences.org)
  • The work supports a role for chemical modification in the recognition and subsequent degradation of a key protein subunit of PSII by a bacterial-type protease, suggesting that tryptophan oxidation of components of the photosynthetic apparatus after high light stress plays a critical role in initiating the PSII repair system. (elifesciences.org)
  • Platinum dissolution and restructuring due to surface oxidation are primary degradation mechanisms that limit the lifetime of platinum-based electrocatalysts for electrochemical energy conversion. (nature.com)
  • Electrochemical oxidation at boron-doped diamond (BDD) electrodes was examined as a possible technique for the remediation of water contaminated with nitramine explosives. (canada.ca)
  • Huang, Y.-F., Kooyman, P. J. & Koper, M. T. M. Intermediate stages of electrochemical oxidation of single-crystalline platinum revealed by in situ Raman spectroscopy. (nature.com)
  • Amphiphilic block copolymer-stabilized gold nanoparticles for aerobic oxidation of alcohols in aqueous solution. (nih.gov)
  • The process of photoreduction may overcompensate the aerobic oxidation resulting in the presence of ferrous (Fe2+) ions during daylight and disappearing during the night (Kopácek et al 2005). (europa.eu)
  • This study aims the removal of a carbamate herbicide, propham, from aqueous solution by direct electrochemical advanced oxidation process using a boron-doped diamond (BDD) anode. (anadolu.edu.tr)
  • Oxidation and oxidative carbonylation of methane and ethane by hexaoxo-μ-peroxodisulfate(2-) ion in aqueous medium. (psu.edu)
  • Dive into the research topics of 'Oxidation and oxidative carbonylation of methane and ethane by hexaoxo-μ-peroxodisulfate(2-) ion in aqueous medium. (psu.edu)
  • Here, the predominant exposure of c-surface was controlled, and its influences in methane oxidation reactions (combustion and oxidative coupling over HAP and lead-substituted HAP (Pb-HAP), respectively) were studied. (osti.gov)
  • The oxide ions and vacancies in turns function as actives sites for promoting methane activation and complete oxidation into CO 2 . (osti.gov)
  • article{osti_1543698, title = {Effects of Controlled Crystalline Surface of Hydroxyapatite on Methane Oxidation Reactions}, author = {Oh, Su Cheun and Xu, Jiayi and Tran, Dat T. and Liu, Bin and Liu, Dongxia}, abstractNote = {Hydroxyapatite (HAP, Ca10(PO4)6(OH)2) has a hexagonal prismatic structure that exposes two crystalline surfaces: prism-faceted a- and basal-faceted c-surfaces. (osti.gov)
  • •̄ ) are powerful oxidizing species with a high oxidative potential (2.5-3.1 vs 2.7 V of hydroxyl radicals), and can effectively decompose various aqueous contaminants. (edu.au)
  • The advantage of BDD is that it promotes indirect oxidation by electrogenerated active intermediates, such as hydroxyl radicals. (canada.ca)
  • Carbon nanotubes (CNTs) synthesized by chemical vapour deposition without using hydrogen were oxidized with 0.1 M potassium permanganate at 40 o C for 2 hours and exhibited high Cu II adsorption capacity from aqueous solution. (edu.vn)
  • After oxidizing, the obtained CNTs were used to remove Cu II from aqueous solution. (edu.vn)
  • Alinnor I. Adsorption of heavy metal ions from aqueous solution by fly ash. (edu.vn)
  • Results are consistent with first-order, solution-phase oxidation of EDTA and glyoxylic acid by ferryl ion and H 2 O 2 , respectively, with inhibition due to sludge accumulation, and equilibrium metal coprecipitation. (montclair.edu)
  • Magnetite (Fe 3 O 4 ) particles are precipitated by combining FeCl 3 and FeCl 2 in a 2:1 stoichiometric ratio in aqueous ammonia solution. (acs.org)
  • A general mineralization sequence was proposed considering the identified oxidation intermediates. (anadolu.edu.tr)
  • Here, we characterized oxidative modification of tryptophan (Trp) residues in the PSII core, and hypothesize that the oxidation of N-terminal Trp is one of the key oxidations in the PSII repair, likely enhancing D1's accessibility to FtsH. (elifesciences.org)
  • Li YH, Luan Z, Xiao X, Zhou X, Xu C, Wu D and Wei B. Removal of Cu2+ Ions from Aqueous Solutions by Carbon Nanotubes. (edu.vn)
  • Kobya M, Demirbas E, Senturk E, Ince M. Adsorption of heavy metal ions from aqueous solutions by activated carbon prepared from apricot stone. (edu.vn)
  • Zehua Q and Guojian W. Effective Chemical Oxidation on the Structure of Multiwalled Carbon Nanotubes. (edu.vn)
  • Oxidation and reduction of multiwalled carbon nanotubes preparation and characterization. (edu.vn)
  • Surface oxidation improves the dispersion of carbon nanotube s in aqueous solutions and plays a key role in the development of biosensors, electrochemical detectors and polymer composites. (cdc.gov)
  • Affinity capillary electrophoresis is used to characterize the oxidation of multi-walled carbon nanotube s. (cdc.gov)
  • Oxidation of a Nickel(II) Complex with an Unsaturated Macrocyclic Ligand in Aqueous Solutions. (bgu.ac.il)
  • Dive into the research topics of 'Oxidation of a Nickel(II) Complex with an Unsaturated Macrocyclic Ligand in Aqueous Solutions. (bgu.ac.il)
  • Adsorption of heavy metal ions from aqueous solutions by bio-char, a by-product of pyrolysis. (edu.vn)
  • In this work, aqueous individual metal-EDTA solutions were aerated with steel wool for 25 h, at ambient pH, temperature, and pressure. (montclair.edu)
  • 5] M.A. Behnajady, N. Modirshahla and M. Shokri: "Photodestruction of Acid Orange 7 (AO7) in aqueous solutions by UV/H2O2: influence of operational parameters", Chemosphere, Vol. 55, (2004), pp. 129-134. (edu.pl)
  • In this study, a low-cost functional ceramic membrane (LFCM) based on waste cast iron (WCI) was fabricated and applied to remove selenium from aqueous solutions. (mdpi.com)
  • You, H., Zurawski, D. J., Nagy, Z. & Yonco, R. M. In-situ x-ray reflectivity study of incipient oxidation of Pt(111) surface in electrolyte solutions. (nature.com)
  • The effect of the phase composition, UV irradiation duration, the nature and quantity of the activator (H2C2O4 and H2O2) on the degree of oxidation destruction was investigated. (edu.sa)
  • Oxidation of Leucine by pyridinium chlorochromate in aqueous DMF medium, containing perchloric acid has been studied at 40ºC. (derpharmachemica.com)
  • While pyrite oxidation directly consumes atmospheric oxygen, acid generated by this reaction should increase the release of CO 2 through carbonate dissolution. (nature.com)
  • Five folate forms, 5-methyltetrahydrofolate, folic acid, tetrahydrofolate, 5-formyltetrahydrofolate, 5,10-methenyltetrahydrofolate, and one oxidation product of 5-methyltetrahydrofolate called MeFox (pyrazino-s-triazine derivative of 4-α-hydroxy-5-methyltetrahydrofolate) are measured by isotope-dilution high performance liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) (Fazili, et al. (cdc.gov)
  • Fig. 3: Sea level, atmospheric CO 2 and O 2 , and pyrite oxidation during the past 800 kyr. (nature.com)
  • New catalysts of Pt, PtNi, PtCo, and NiCo supported on Al 2 O 3 were developed for producing hydrogen by aqueous phase reforming (APR) of oxygenated hydrocarbons. (hindawi.com)
  • The resulting particles, ~10-20 nm in diameter based on powder X-ray diffraction, are then treated with aqueous tetramethylammonium hydroxide, which acts as a surfactant. (acs.org)
  • Nowadays, the most common products are aqueous suspensions of graphite, molybdenum disulfide or polytetrafluoroethylene (TeflonTM). (utwente.nl)
  • Fig. 1: Dissolution and atomic-scale structural changes during Pt oxidation. (nature.com)
  • However, EDTA must then be removed from the groundwater, by advanced oxidation or specialized biological treatment. (montclair.edu)
  • Source zones containing tar, a dense non-aqueous phase liquid (DNAPL), can contaminate groundwater for centuries. (researchgate.net)
  • The locations of the extracted platinum atoms after Pt(100) oxidation reveal distinct differences from the Pt(111) case, which explains the different surface stability. (nature.com)
  • Photosystem II (PSII) is the initial site of photosynthetic electron transfer by water oxidation. (elifesciences.org)
  • The first step of photosynthetic electron transfer in the thylakoid membrane occurs at Photosystem II (PSII), where light energy absorbed by P 680 chlorophyll molecules drives water oxidation, and electron is transferred to plastoquinone. (elifesciences.org)
  • Molecular dynamics simulation of PSII implies that both Trp-14 oxidation and Phe substitution cause fluctuation of D1 N-terminal tail. (elifesciences.org)
  • The apparent rate constant value of propham oxidation was determined as 4.8 x 10(-4) s(-1) at 100 mA and 35 degrees C in the presence of 50 mM Na2SO4 in acidic media (pH: 3). (anadolu.edu.tr)
  • Thus the formation of ferric hydroxide at pH levels above 5.0 limits the presence of iron in aqueous systems. (europa.eu)
  • on Oxidation Technologies for Water and Wastewater Treatment. (ub.edu)
  • AOTs-10 the tenth international conference on advanced oxidation technologies for water and air remediation. (ub.edu)
  • Treatment of aqueous alcohol ethoxylates. (itu.edu.tr)
  • Any precipitate would in turn undergo further oxidation to form the highly insoluble ferric hydroxide (Fe(OH)3) as this species autocatylzes the oxidation of Fe(II). (europa.eu)
  • These lubricants are based on ceramic nanoparticles which are more resistant to temperature and oxidation than traditional lubricants. (utwente.nl)
  • Oxidation of Nitrobenzene by O3/UV : Influence of H2O2and Fe (III). (ub.edu)
  • This paper describes a simple synthesis of an aqueous-based ferrofluid that may be used in an introductory science or engineering laboratory. (acs.org)
  • While the complete proteinaceous constituents as well as oxidation of the heptapeptide Cor1-C420 by skin of the skin are yet to be delineated ( 7 ), the development of in sensitizers. (cdc.gov)