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Uranium adsorption characteristics of a circulating fluidized‐bed adsorber
Author(s) -
Ito Yoshiro,
Nakamura Susumu,
Shirakashi Masataka,
Kanno Masayoshi
Publication year - 1992
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690380609
Subject(s) - polyacrylonitrile , adsorption , uranium , fluidized bed , fluidized bed combustion , seawater , chemistry , materials science , chemical engineering , metallurgy , composite material , geology , organic chemistry , engineering , oceanography , polymer
A new type of fluidized bed, called a circulating fluidized‐bed adsorber (CFBA), was developed for processing a large quantity of water with high efficiency. Its fluid mechanical characteristics are reported, as well as recovery of uranium from natural seawater using a small CFBA. Using hydrous titanium oxide, granulated with polyacrylonitrile (PAN‐HTO), as an adsorbent, CFBA ran stably for six days, the period required for the adsorbent to collect a practical amount of uranium. To predict the uranium adsorption performance of a plant‐size CFBA, a numerical model simulating the adsorption kinetics was developed. The result of the numerical calculation by the model was in good agreement with the experimental data.