0000000000237838

AUTHOR

Tomas Kohout

showing 3 related works from this author

Development of iron oxide / activated carbon nanoparticle composite for the removal of Cr(VI), Cu(II) and Cd(II) ions from aqueous solution

2018

Iron oxide (Fe3O4) and iron oxide/activated carbon (Fe3O4/AC) were fabricated by co-precipitation method for the removal of Cr(VI), Cu(II) and Cd(II) ions from aqueous solution in batch mode. These nanoparticles were characterized by BET, FTIR, XRD, SEM/TEM and VSM. The optimum conditions for the removal of ions were pH = 2 for Cr(VI) and 6 for Cu(II) and Cd(II), initial metal ion concentration = 50 mg L−1, nanoparticle dose = 50 mg/10 mL, temperature = 25 ± 1 °C, shaking speed = 180 rpm and contact time = 3 h. The equilibrium data of ions sorption were well described by Langmuir, Freundlich, Redlich-Peterson and Intraparticle Diffusion model. The R2 values obtained by Langmuir model were h…

XRDpHaktiivihiiliTEMrautaoksiditnanohiukkasetiron oxide nanoparticle
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Development of iron oxide/activated carbon nanoparticle composite for the removal of Cr(VI), Cu(II) and Cd(II) ions from aqueous solution

2018

Iron oxide (Fe3O4) and iron oxide/activated carbon (Fe3O4/AC) were fabricated by co-precipitation method for the removal of Cr(VI), Cu(II) and Cd(II) ions from aqueous solution in batch mode. These nanoparticles were characterized by BET, FTIR, XRD, SEM/TEM and VSM. The optimum conditions for the removal of ions were pH = 2 for Cr(VI) and 6 for Cu(II) and Cd(II), initial metal ion concentration = 50 mg L−1, nanoparticle dose = 50 mg/10 mL, temperature = 25 ± 1 °C, shaking speed = 180 rpm and contact time = 3 h. The equilibrium data of ions sorption were well described by Langmuir, Freundlich, Redlich-Peterson and Intraparticle Diffusion model. The R2 values obtained by Langmuir model were h…

Langmuirlcsh:Management. Industrial managementXRDActivated carbonGeography Planning and Development116 Chemical sciencesIron oxide215 Chemical engineering02 engineering and technology010501 environmental sciences01 natural scienceschemistry.chemical_compoundsymbols.namesakeAdsorptionINDUSTRIAL WASTE-WATERDesorptionEFFICIENT ADSORBENTSmedicinerautaoksiditFreundlich equationiron oxide nanoparticleta1160105 earth and related environmental sciencesWater Science and TechnologyAqueous solutionMODIFIED MAGNETIC NANOPARTICLESpHCHROMIUM VI REMOVALiron oxide nanoparticlesLangmuir adsorption model021001 nanoscience & nanotechnologyNANO-PARTICLESchemistrylcsh:HD28-70OXIDE COMPOSITEaktiivihiiliCOPPER IONSsymbolsTEMLEAD(II) REMOVALnanohiukkasetHEXAVALENT CHROMIUM0210 nano-technologyActivated carbonmedicine.drugNuclear chemistry
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Noise reduction in asteroid imaging using a miniaturized spectral imager

2021

In October 2024, European Space Agency’s Hera mission will be launched, targeting the binary asteroid Didymos. Hera will host the Juventas and Milani CubeSats, the first CubeSats to orbit close to a small celestial body performing scientific and technological operations. The primary scientific payload of the Milani CubeSat is the SWIR, NIR, and VIS imaging spectrometer ASPECT. The Milani mission objectives include mapping the global composition and the characterization of the binary asteroid surface. Onboard data processing and evaluation steps will be applied due to the limited data budget for the downlink to Earth and to perform the technological demonstration of a novel semi-autonomous h…

Data processingNoise (signal processing)Computer sciencePayloadReal-time computingImaging spectrometerHyperspectral imaging02 engineering and technologyFilter (signal processing)7. Clean energy030218 nuclear medicine & medical imaging03 medical and health sciences020210 optoelectronics & photonics0302 clinical medicine13. Climate actionDigital image processing0202 electrical engineering electronic engineering information engineeringCubeSatSensors, Systems, and Next-Generation Satellites XXV
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