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Title: Recovery of uranium from seawater by immobilized tannin

Abstract

Tannin compounds having multiple adjacent hydroxy groups have an extremely high affinity for uranium. To prevent the leaching of tannins into water and to improve the adsorbing characteristics of these compounds, the authors tried to immobilize tannins. The immobilized tannin has the most favorable features for uranium recovery; high selective adsorption ability to uranium, rapid adsorption rate, and applicability in both column and batch systems. The immobilized tannin can recover uranium from natural seawater with high efficiency. About 2530 ..mu..g uranium is adsorbed per gram of this adsorbent within 22 h. Depending on the concentration in seawater, an enrichment of up to 766,000-fold within the adsorbent is possible. Almost all uranium adsorbed is easily desorbed with a very dilute acid. Thus, the immobilized tannin can be used repeatedly in the adsorption-desorption process.

Authors:
;
Publication Date:
Research Org.:
Miyazaki Medical College (Japan)
OSTI Identifier:
5183170
Resource Type:
Journal Article
Journal Name:
Sep. Sci. Technol.; (United States)
Additional Journal Information:
Journal Volume: 22:6
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; URANIUM; ADSORPTION; DESORPTION; EFFICIENCY; EXPERIMENTAL DATA; SEAWATER; SORPTIVE PROPERTIES; TANNIC ACID; ACTINIDES; AROMATICS; CARBOXYLIC ACIDS; DATA; ELEMENTS; HYDROGEN COMPOUNDS; HYDROXY COMPOUNDS; INFORMATION; METALS; NUMERICAL DATA; ORGANIC ACIDS; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PHENOLS; POLYPHENOLS; SORPTION; SURFACE PROPERTIES; WATER; 400105* - Separation Procedures; 400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials

Citation Formats

Sakaguchi, T, and Nakajima, A. Recovery of uranium from seawater by immobilized tannin. United States: N. p., 1987. Web. doi:10.1080/01496398708058421.
Sakaguchi, T, & Nakajima, A. Recovery of uranium from seawater by immobilized tannin. United States. https://doi.org/10.1080/01496398708058421
Sakaguchi, T, and Nakajima, A. 1987. "Recovery of uranium from seawater by immobilized tannin". United States. https://doi.org/10.1080/01496398708058421.
@article{osti_5183170,
title = {Recovery of uranium from seawater by immobilized tannin},
author = {Sakaguchi, T and Nakajima, A},
abstractNote = {Tannin compounds having multiple adjacent hydroxy groups have an extremely high affinity for uranium. To prevent the leaching of tannins into water and to improve the adsorbing characteristics of these compounds, the authors tried to immobilize tannins. The immobilized tannin has the most favorable features for uranium recovery; high selective adsorption ability to uranium, rapid adsorption rate, and applicability in both column and batch systems. The immobilized tannin can recover uranium from natural seawater with high efficiency. About 2530 ..mu..g uranium is adsorbed per gram of this adsorbent within 22 h. Depending on the concentration in seawater, an enrichment of up to 766,000-fold within the adsorbent is possible. Almost all uranium adsorbed is easily desorbed with a very dilute acid. Thus, the immobilized tannin can be used repeatedly in the adsorption-desorption process.},
doi = {10.1080/01496398708058421},
url = {https://www.osti.gov/biblio/5183170}, journal = {Sep. Sci. Technol.; (United States)},
number = ,
volume = 22:6,
place = {United States},
year = {Mon Jun 01 00:00:00 EDT 1987},
month = {Mon Jun 01 00:00:00 EDT 1987}
}