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Treatment of liquid waste containing alpha nuclides by adsorption

Abstract

In this paper, experimental investigations on the removal of actinides from a decontaminating waste stream by using adsorption technique following the cementation of a resultant absorbent sludge are described. One kind of apatites was selected as an actinide absorbent from a number of indigenous materials by batch equilibrium tests. The influence of contact time, temperature, particle size and pH variables on the adsorption of actinides is given. The removal of total alpha activity is higher tan 97% by absorbent precipitation process when the absorbent addition percentage of the liquid waste is more than 3.25 wt%, making alpha-activity level of the primary waste stream below 3.7 x 10{sup 3} Bq/L, which can meet the acceptance requirements of the Low Level Radwaste Treatment Plant. The studies on the cementation of the absorbent sludge included the selection of cements used for solidification, formulation and characterization of the selected cemented waste forms. The results obtained have shown that both 525 type Portland cement and 325 type Portland pozzolana cement were compatible with the absorbent sludge. The selected cemented waste forms meet the requirements of the Chinese National Standard (GB 14569.1-93): Characteristic Requirements for Solidified Waste of Low and Intermediate Level Radioactive Waste - Cement  More>>
Authors:
Jishu, Zeng; Xiguang, Su; Dejing, Xia; Sianhua, Fan [1] 
  1. China Inst. of Atomic Energy, Beijing (China). Radiochemistry Dept.
Publication Date:
Feb 01, 1997
Product Type:
Technical Report
Report Number:
IAEA-TECDOC-929
Reference Number:
SCA: 052001; 052002; PA: AIX-28:034841; EDB-97:060123; SN: 97001775329
Resource Relation:
Other Information: PBD: Feb 1997; Related Information: Is Part Of Treatment technologies for low and intermediate level waste from nuclear applications. Final report of a co-ordinated research programme 1991-1996; PB: 207 p.
Subject:
05 NUCLEAR FUELS; ALPHA-BEARING WASTES; DECONTAMINATION; RADIOACTIVE WASTE PROCESSING; SORPTION; ACTINIDES; CEMENTS; EXPERIMENTAL DATA; LEACHING; PRECIPITATION; RADIOACTIVE WASTE DISPOSAL; RADIOACTIVE WASTES; SOLIDIFICATION
OSTI ID:
462479
Research Organizations:
International Atomic Energy Agency, Vienna (Austria)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 1011-4289; Other: ON: DE97622561; TRN: XA9743751034841
Availability:
INIS; OSTI as DE97622561
Submitting Site:
INIS
Size:
pp. 193-206
Announcement Date:

Citation Formats

Jishu, Zeng, Xiguang, Su, Dejing, Xia, and Sianhua, Fan. Treatment of liquid waste containing alpha nuclides by adsorption. IAEA: N. p., 1997. Web.
Jishu, Zeng, Xiguang, Su, Dejing, Xia, & Sianhua, Fan. Treatment of liquid waste containing alpha nuclides by adsorption. IAEA.
Jishu, Zeng, Xiguang, Su, Dejing, Xia, and Sianhua, Fan. 1997. "Treatment of liquid waste containing alpha nuclides by adsorption." IAEA.
@misc{etde_462479,
title = {Treatment of liquid waste containing alpha nuclides by adsorption}
author = {Jishu, Zeng, Xiguang, Su, Dejing, Xia, and Sianhua, Fan}
abstractNote = {In this paper, experimental investigations on the removal of actinides from a decontaminating waste stream by using adsorption technique following the cementation of a resultant absorbent sludge are described. One kind of apatites was selected as an actinide absorbent from a number of indigenous materials by batch equilibrium tests. The influence of contact time, temperature, particle size and pH variables on the adsorption of actinides is given. The removal of total alpha activity is higher tan 97% by absorbent precipitation process when the absorbent addition percentage of the liquid waste is more than 3.25 wt%, making alpha-activity level of the primary waste stream below 3.7 x 10{sup 3} Bq/L, which can meet the acceptance requirements of the Low Level Radwaste Treatment Plant. The studies on the cementation of the absorbent sludge included the selection of cements used for solidification, formulation and characterization of the selected cemented waste forms. The results obtained have shown that both 525 type Portland cement and 325 type Portland pozzolana cement were compatible with the absorbent sludge. The selected cemented waste forms meet the requirements of the Chinese National Standard (GB 14569.1-93): Characteristic Requirements for Solidified Waste of Low and Intermediate Level Radioactive Waste - Cement Solidified Waste. (author). 9 refs, 3 figs, 14 tabs.}
place = {IAEA}
year = {1997}
month = {Feb}
}