Order number 940330-160606-96
-001-001
page 4
set 11 with 111 of 111 items
PAGE RANGE
PUB. DATE (YYMMDD)
LIMITATION CODE
ABSTRACT
\
233-239
'
931000
UNL
The fallout from nuclear weapons tests conducted on
Bikini Atoll Island in 1954 resulted in contamination of
‘
soil with Cesium 137.
To develop effective regimes for
decontaminating the Bikini Atoll soil, the exchange of
Cs
for K,
Na,
understood.
and other cations
on the soil must be
Samples of soils made homoionic with K, Na,
or Ca were reacted with solutions containing Cs ions,
and the quantities of Cs sorbed and the rates of
exchange were measured. The samples were then reacted
with solutions containing K, Na, or Ca, and the
quantities of Cs desorbed and the rates of exchange were
again measured. Samples made homoionic with Na had a
greater ion exchange capacity than samples made
homoionic with K, and, in both cases, the ion exchange
capacity increased with the organic matter content of
the soil. For samples pretreated with Ca, the ion
exchange capacity is not related in a simple way to the
organic matter content. The kinetics were assessed by
plotting the rate of exchange vs. the time and vs. the
quantity exchanged. A first-order equation was obeyed
during most of the run in Cs desorption experiments and
during a limited part of the run in Cs adsorption
experiments. An increase in the rate of Cs exchange was
observed at the beginning of the experiments especially
for Cs adsorption. This increase is presumably due to an
increase of the ionic strength of the liquid phase
during the exchange process. 33 refs., 9 figs., 2 tabs.
KEYWORDS
CESIUM/chemical
reaction kinetics
;CESIUM/ion exchange
BIKINI/fallout ;BIKINI/land reclamation ; ADSORPTION;
DESORPTION; CESIUM; ORGANIC MATTER; CATIONS; SOILS; NUCLEAR
EXPLOSIONS; BIKINI; FALLOUT; POTASSIUM; SODIUM; CALCIUM
EDB Item
5
ANALYTIC TITLE ENGLISH On-site polychlorinated biphenyl destruction
demonstration project on Kwaylein Atoll, Republic of the
Marshall Islands
TITLE ENGLISH
Air & Waste Management Association 85th annual meeting
ANALYTIC AUTHOR/AFFIL
PAGE RANGE
PUB. DATE
(YYMMDD)
LIMITATION CODE
ABSTRACT
Machanoff,
R.;
Donaldson,
Marietta Energy Systems,
43-44
T.L.;
Brown,
Oak Ridge,
TN
C.H.
[Martin
(United States) ]
920000
UNL
The Hazardous Waste Remedial Actions Program
(HAZWRAP),
managed by Martin Marietta Energy Systems, Inc., is
providing environmental management support for the
installation restoration of the U.S. Army Kwajalein
le
90035438
;