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25.02.2016

Porous microsphere of magnesium oxide as an effective sorbent for removal of volatile iodine from off-gas stream

verfasst von: Sachin U. Nandanwar, Julia Dantas, Kai Coldsnow, Michael Green, Vivek Utgikar, Piyush Sabharwall, D. Eric Aston

Erschienen in: Adsorption | Ausgabe 3/2016

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Abstract

Porous microspheres of magnesium oxide were synthesized by calcination of precursor obtained via hydrothermal method. A sample of microsphere was characterized by transmission electron microscopy, scanning electron microscopy–energy dispersion spectroscopy, X-ray diffraction, thermogravimetric analysis, N₂ adsorption–desorption isotherms, and BET surface area. The average pore size and surface area of the microsphere were found to be 9.0 nm and 83.1 m² g⁻¹, respectively. The performance of sorbent was investigated in a continuous adsorption system. Iodine adsorption on sorbent was studied by varying temperature of adsorption column, sorbent calcination temperature and initial concentration of iodine. The capacity of sorbent increased by ~25 % when calcination temperature was raised from 350 to 500 °C. The maximum iodine adsorption capacity of sorbent was found to be 196 mg g⁻¹ using Langmuir isotherm. These results indicate the microspherical form of MgO to be effective sorbent to capture iodine vapor from off-gas stream.

Vorheriger Artikel Perovskite LaMnO3/ZSM-5 composites for H2S reactive adsorption at high temperature

Nächster Artikel Development and characterization of microwave-assisted activated carbons from Parkinsonea aculeata wood

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Titel: Porous microsphere of magnesium oxide as an effective sorbent for removal of volatile iodine from off-gas stream
verfasst von: Sachin U. Nandanwar
Julia Dantas
Kai Coldsnow
Michael Green
Vivek Utgikar
Piyush Sabharwall
D. Eric Aston
Publikationsdatum: 25.02.2016
Verlag: Springer US
Erschienen in: Adsorption / Ausgabe 3/2016
Print ISSN: 0929-5607
Elektronische ISSN: 1572-8757
DOI: https://doi.org/10.1007/s10450-016-9781-1

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