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ASTM Selected Technical Papers
Stabilization and Solidification of Hazardous, Radioactive, and Mixed Wastes: 3rd Volume
By
TM Gilliam
TM Gilliam
Editor
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CC Wiles
CC Wiles
Editor
Search for other works by this author on:
ISBN-10:
0-8031-2020-6
ISBN:
978-0-8031-2020-4
No. of Pages:
734
Publisher:
ASTM International
Publication date:
1996

A bench-scale study was conducted to evaluate thermoplastic encapsulation as a treatment for an aqueous blowdown mixed waste to be generated at the Consolidated Incineration Facility (CIF) at the Savannah River Site. Non-radioactive CIF blowdown surrogate, dried in a stirred vacuum dryer, was stabilized at relatively high waste loadings (45 – 62 wt%) using modified sulfur cement, bitumen, and low-density polyethylene. All samples tested exceeded 3.45 MPa (500 psi) in compressive strength, and water immersion for 90 days did not produce any adverse impacts on waste form integrity. In each case, ignition temperature was well above the process temperature, and the materials self extinguished when cooled below the self ignition temperature. Leachability of toxic metals from simulated waste encapsulated in polyethylene was about 4 times lower than modified sulfur cement or bitumen test samples. Polyethylene waste forms containing up to 35 wt% pretreated waste easily passed EPA land disposal regulation limits.

1.
Holmes Burns
H.
, “
The Consolidated Incineration Facility Blowdown Treatment Study (U)
,” WSRC-TR-92-182,
Savannah River Site
, Aiken, SC, April, 1992.
2.
Burns
D. B.
, “
CIF Blowdown Simulant Composition (U)
,” SRT-WHM-93-019,
Savannah River Site
, Aiken, SC,
1993
.
3.
Westsik
,
J. H.
 Jr.
, “
Characterization of Cement and Bitumen Waste Forms Containing Simulated Low-Level Waste Incinerator Ash
,”NUREG/CR-3 798, PNL-5153,
Pacific Northwest Laboratory
, Richland, WA, August, 1984.
4.
Kalb
P. D.
and
Colombo
P.
, “
Modified Sulfur Cement Solidification of Low-Level Wastes, Topical Report
,” BNL-51923,
Brookhaven National Laboratory
, Upton, NY, October, 1985.
5.
Kalb
P. D.
,
Heiser
J.H.
, and
Colombo
P.
, “
Modified Sulfur Cement Encapsulation of Mixed Waste Contaminated Incinerator Fly Ash
, ”
Waste Management
, Vol.
11
, No.
3
, pp. 147–153,
1991
.
6.
Kalb
P. D.
and
Colombo
P.
, “
Polyethylene Solidification of Low-Level Wastes, Topical Report
,” BNL-51867,
Brookhaven National Laboratory
, Upton, NY, October, 1984.
7.
Kalb
P. D.
,
Heiser
J.H.
, and
Colombo
P.
, “
Polyethylene Encapsulation of Nitrate Salt Wastes : Waste Form Stability, Process Scale-up, and Economics
,” BNL-52293,
Brookhaven National Laboratory
, Upton, New York, July, 1991.
8.
U.S. Environmental Protection Agency
, 40 CFR 261, “
Identification and Listing of Hazardous Waste
,”
Fed. Reg. 51, 21865
,
13
06
1986
.
9.
Technical Evaluation Report
,
Associated Technologies, Inc.
(subsidiary of US Ecology), docket WM-102, USE-61-002-P, Charlotte, NC.
10.
Hallman
,
T.
,
Scientific Ecology Group
, personal communication,
19
08
1993
.
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