SOLIDIFICATION STABILIZATION OF TECHNETIUM IN CEMENT-BASED GROUTS

被引：22

作者：

GILLIAM, TM

SPENCE, RD

BOSTICK, WD

SHOEMAKER, JL

机构：

[1] Oak Ridge National Laboratory Oak Ridge

[2] Oak Ridge Gaseous Diffusion Plant, Oak Ridge

来源：

JOURNAL OF HAZARDOUS MATERIALS | 1990年 / 24卷 / 2-3期

关键词：

D O I：

10.1016/0304-3894(90)87009-7

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Mixed low-level radioactive and chemically hazardous process treatment wastes from the Portsmouth Gaseous Diffusion Plant are stabilized by solidification in cement-based grouts. Conventional portland cement and fly-ash grouts have been shown to be effective for retention of hydrolyzable metals (e.g., lead, cadmium, uranium, and nickel) but are marginally acceptable for retention of radioactive 99Tc, which is present in the waste as the highly mobile pertechnetate anion. Addition of ground blast furnace slag to the grout is shown to reduce the leachability of technetium by several orders of magnitude. The selective effect of slag is believed to be due to its ability to reduce Tc (VII) to the less soluble Tc (IV) species. © 1990.

引用

页码：189 / 197

页数：9

共 12 条

[1]

Gilliam, Leach testing of hydrofracture grouts containing hazardous waste, J. Underground Injection Practice Council, 1, (1986)

[2]

Gilliam, Dole, McDaniel, Waste Immobilization in Cement-based Grouts, Hazardous and Industrial Solid Waste Testing and Disposal, 933, (1986)

[3]

Sams, McDaniel, Gilliam, Immobilization of neutralized cladding-removal waste in a cement-based grout, Proc. 2nd Int. Conf. Radioactive Waste Management

[4]

Standards for Protection Against Radiation, Federal Register December 27, 1982, 47, (1982)

[5]

Tallent, McDaniel, Del Cul, Dodson, Trotter, Immobilization of technetium and nitrate in cement-based materials, Materials Research Society Symposium, Boston, MA

[6]

Malek, Roy, Barnes, Langton, Slag-Cement-Low Level Waste, Forms at the Savannah River Plant, (1985)

[7]

Hall, Watson, Davidson, Case, Bryson, RCRA Hazardous Wastes Handbook, (1985)

[8]

Bostick, Shoemaker, Fellows, Spence, Gilliam, McDaniel, Evans-Brown, Blast Furnace Slag-Cement Blends to Immobilization of Technetium-Containing Wastes, (1988)

[9]

Gilliam, Loflin, Leachability Studies of Hydrofracture Grouts, (1988)

[10]

Measurement of the Leachability of Solidified Low-Level, Radioactive Wastes by a Short-Term Test Procedure, (1986)

← 1 2 →