Leaching Processes and Evaluation Tests for Inorganic Constituent Release from Cement-Based Matrices - Stabilization and Solidification of Hazardous, Radioactive, and Mixed Wastes - page 253

ASTM D 4874 208
- Column
Extraction
Method

U.S. Standard
Field Mimicking
Flow-Through
Column Test (4 void
volumes collected)

DI water
Continuous

1, 2, 4, 8
void
vol

Granular 8 days total

(24 hr/vol)

Cumulative release
[mg/kg] with L/S.
Incremental conc.
[mg/L] with L/S.

L/S ratios - short-, medium-,
and long-term leaching.
Channeling, variable
residence time.

NEN 7343 209 -
Column Leach
Test

Dutch Regulatory
Standard
Field Mimicking
Flow-Through
Column Test (7
fractions collected)

DI water or
dilute HNO 3
(pH 4)
Continuous

0.1:1 -
10:1
(v/m)

Granular
< 4
(max)

21 days total Cumulative release

[mg/kg] with L/S.
Incremental conc.
[mg/L] with L/S.

L/S ratios - short-, medium-,
and long-term leaching.
Up-Flow minimizes
channeling and plugging.

PrEN 14405 227 -
Up-flow
Percolation Test

Proposed CEN
Standard
Field Mimicking
Flow-Through
Column Test

DI water or
dilute HNO 3
Continuous

0.1:1 -
10:1
(v/m)

Granular
< 4
(max)

21 days total Cumulative release

[mg/kg] with L/S.
Incremental conc.
[mg/L] with L/S.

L/S ratios - short-, medium-,
and long-term leaching.
Up-flow minimizes
channeling and plugging.

a Provisions for extended leaching intervals.
b Leachate collected in terms of void volumes rather than L/S ratio.