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Leaching of RA-226 contaminated gravel using different aqueous treatments

Abstract

Investigation of the efficiencies of different aqueous leaching treatments was carried out on gravel artificially contaminated with Ra-226. The extent of leaching efficiency was determined in terms of Ra-226 and its daughter Rn-222. Liquid scintillation counting using high efficiency mineral oil based liquid scintillator was the technique adopted for measuring Ra-226 and Rn-222 leached off the contaminated gravel. Water, dilute solutions of barium chloride and HCl were used as leachants. Different masses of gravel were leached with 200 mL of leachant for various contact time periods. The leached Rn-222 activity measured was plotted vs the decay factor e; from which Rn-222 and Ra-226 originally present in the sample were determined. Several leaching parameters were tested; namely type of leachant, leachant volume/gravel mass ratio, leachant contact time, effect of varying Ba Cl{sub 2} concentration, and successive leaching. Optimization of the leaching parameters for desorption of Ra-226 off the contaminated gravel under laboratory conditions may help determine the ideal conditions for remediating soil contaminated with radium or chemically similar radionuclides. 7 figs.
Authors:
Mamoon, A; Abulfaraj, W H; Sohsah, M A [1] 
  1. King Abdulaziz University, Jeddah, Saudi Arbabia (Saudi Arabia)
Publication Date:
Dec 31, 1996
Product Type:
Miscellaneous
Report Number:
INIS-EG-006; CONF-9611191-
Reference Number:
SCA: 540211; PA: AIX-28:058718; EDB-97:120634; SN: 97001844021
Resource Relation:
Conference: 3. radiation physics conference, Cairo (Egypt), 13-17 Nov 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the third Radiation Physics Conference. Vol. 2; Gomaa, M.A.; El-Behay, A.Z.; Hassib, G.M.; El-Naggar, A.M. [eds.]; PB: 419 p.
Subject:
54 ENVIRONMENTAL SCIENCES; RADON 226; CONTAMINATION; LEACHING; WATER; AQUEOUS SOLUTIONS; BARIUM CHLORIDES; EXPERIMENTAL DATA; HYDROCHLORIC ACID; SAUDI ARABIA
OSTI ID:
520921
Research Organizations:
Atomic Energy Establishment, Cairo (Egypt)
Country of Origin:
Egypt
Language:
English
Other Identifying Numbers:
Other: ON: DE97639681; TRN: EG9700130058718
Availability:
INIS; OSTI as DE97639681
Submitting Site:
INIS
Size:
pp. 385-399
Announcement Date:

Citation Formats

Mamoon, A, Abulfaraj, W H, and Sohsah, M A. Leaching of RA-226 contaminated gravel using different aqueous treatments. Egypt: N. p., 1996. Web.
Mamoon, A, Abulfaraj, W H, & Sohsah, M A. Leaching of RA-226 contaminated gravel using different aqueous treatments. Egypt.
Mamoon, A, Abulfaraj, W H, and Sohsah, M A. 1996. "Leaching of RA-226 contaminated gravel using different aqueous treatments." Egypt.
@misc{etde_520921,
title = {Leaching of RA-226 contaminated gravel using different aqueous treatments}
author = {Mamoon, A, Abulfaraj, W H, and Sohsah, M A}
abstractNote = {Investigation of the efficiencies of different aqueous leaching treatments was carried out on gravel artificially contaminated with Ra-226. The extent of leaching efficiency was determined in terms of Ra-226 and its daughter Rn-222. Liquid scintillation counting using high efficiency mineral oil based liquid scintillator was the technique adopted for measuring Ra-226 and Rn-222 leached off the contaminated gravel. Water, dilute solutions of barium chloride and HCl were used as leachants. Different masses of gravel were leached with 200 mL of leachant for various contact time periods. The leached Rn-222 activity measured was plotted vs the decay factor e; from which Rn-222 and Ra-226 originally present in the sample were determined. Several leaching parameters were tested; namely type of leachant, leachant volume/gravel mass ratio, leachant contact time, effect of varying Ba Cl{sub 2} concentration, and successive leaching. Optimization of the leaching parameters for desorption of Ra-226 off the contaminated gravel under laboratory conditions may help determine the ideal conditions for remediating soil contaminated with radium or chemically similar radionuclides. 7 figs.}
place = {Egypt}
year = {1996}
month = {Dec}
}