Recovery of uranium from seawater by composite fiber adsorbent

Autor:	Takao Aoki, Yoshiaki Kobuke, Tadami Kamaishi, Iwao Tabushi, Hiromitsu Tanaka, Ikuo Hagiwara
Rok vydání:	1990
Předmět:	General Chemical Engineering Sorption General Chemistry Uranyl Industrial and Manufacturing Engineering Volumetric flow rate Chemical kinetics chemistry.chemical_compound Adsorption chemistry Ionic strength Seawater Saturation (chemistry) Nuclear chemistry
Zdroj:	Industrial & Engineering Chemistry Research. 29:1662-1668
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie00104a014
Popis:	The authors of this paper developed a composite fiber adsorbent (CFA) to entrap finely powdered amidoxime into fibrils of supporting material with silica in a previous report. This was further tested for uranyl recovery directly from seawater. The adsorption rate showed a flow rate dependence with almost a saturation value of {approximately}100 {mu}g of U/g of CFA at a mean flow rate of sea current. Chemical as well as physical deterioration was overcome by using 1 N NaHCO{sub 3} and 0.72 M NaCl as liberating and washing agents, to keep the pH and ionic strength, respectively, constant, and the initial adsorption rate was maintained even after a recycle time of 50. A continuous passage of seawater showed a linear increase of the adsorption to afford 1560 {mu}g of U/g of CFA after 3 weeks.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::93778b2ddceeaff63d910f6a5e3b0153 https://doi.org/10.1021/ie00104a014 Zobrazit plný text záznamu