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Title: Accumulation of uranium by immobilized persimmon tannin

Abstract

We have discovered that the extracted juice of unripe astringent persimmon fruit, designated as kakishibu or shibuol, has an extremely high affinity for uranium. To develop efficient adsorbents for uranium, we tried to immobilize kakishibu (persimmon tannin) with various aldehydes and mineral acids. Persimmon tannin immobilized with glutaraldehyde can accumulate 1.71 g (14 mEq U) of uranium per gram of the adsorbent. The uranium accumulating capacity of this adsorbent is several times greater than that of commercially available chelating resins (2-3 mEq/g). Immobilized persimmon tannin has the most favorable features for uranium recovery; high selective adsorption ability, rapid adsorption rate, and applicability in both column and batch systems. The uranium retained on immobilized persimmon tannin can be quantitatively and easily eluted with a very dilute acid, and the adsorbent can thus be easily recycled in the adsorption-desorption process. Immobilized persimmon tannin also has a high affinity for thorium. 23 refs., 13 figs., 7 tabs.

Authors:
;  [1]
  1. Miyazaki Medical College (Japan)
Publication Date:
OSTI Identifier:
5156317
Resource Type:
Journal Article
Journal Name:
Separation Science and Technology; (United States)
Additional Journal Information:
Journal Volume: 29:2; Journal ID: ISSN 0149-6395
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; THORIUM IONS; ADSORPTION; URANIUM IONS; ALDEHYDES; COMPILED DATA; TANNIC ACID; AROMATICS; CARBOXYLIC ACIDS; CHARGED PARTICLES; DATA; HYDROXY COMPOUNDS; INFORMATION; IONS; NUMERICAL DATA; ORGANIC ACIDS; ORGANIC COMPOUNDS; PHENOLS; POLYPHENOLS; SORPTION; 400105* - Separation Procedures; 400702 - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials

Citation Formats

Sakaguchi, Takashi, and Nakajima, Akira. Accumulation of uranium by immobilized persimmon tannin. United States: N. p., 1994. Web. doi:10.1080/01496399408002478.
Sakaguchi, Takashi, & Nakajima, Akira. Accumulation of uranium by immobilized persimmon tannin. United States. https://doi.org/10.1080/01496399408002478
Sakaguchi, Takashi, and Nakajima, Akira. 1994. "Accumulation of uranium by immobilized persimmon tannin". United States. https://doi.org/10.1080/01496399408002478.
@article{osti_5156317,
title = {Accumulation of uranium by immobilized persimmon tannin},
author = {Sakaguchi, Takashi and Nakajima, Akira},
abstractNote = {We have discovered that the extracted juice of unripe astringent persimmon fruit, designated as kakishibu or shibuol, has an extremely high affinity for uranium. To develop efficient adsorbents for uranium, we tried to immobilize kakishibu (persimmon tannin) with various aldehydes and mineral acids. Persimmon tannin immobilized with glutaraldehyde can accumulate 1.71 g (14 mEq U) of uranium per gram of the adsorbent. The uranium accumulating capacity of this adsorbent is several times greater than that of commercially available chelating resins (2-3 mEq/g). Immobilized persimmon tannin has the most favorable features for uranium recovery; high selective adsorption ability, rapid adsorption rate, and applicability in both column and batch systems. The uranium retained on immobilized persimmon tannin can be quantitatively and easily eluted with a very dilute acid, and the adsorbent can thus be easily recycled in the adsorption-desorption process. Immobilized persimmon tannin also has a high affinity for thorium. 23 refs., 13 figs., 7 tabs.},
doi = {10.1080/01496399408002478},
url = {https://www.osti.gov/biblio/5156317}, journal = {Separation Science and Technology; (United States)},
issn = {0149-6395},
number = ,
volume = 29:2,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}