Hidehiro Kaneko

Lecturer, Department of Civil and Environmental Engineering, Yamanashi University
(4-3-11, Takeda, Koufu, Yamanashi 400 Japan)

Abstract

Leaching tests are useful tools in hazardous waste management and varieties of leaching procedures have been developed and proposed. They were reviewed and classified according to the solid/liquid contact method. The effect of leaching condition variables were also summarized. There are different reasons for conducting leaching tests. The information requested from a leaching test also varies according to the objective of the test. Because of this, a leaching procedure must be developed with special care. The important factors in developing a leaching procedure were discussed. Further understanding about leaching mechanisms and a test method to evaluate availability of target constituents are required for adequate hazardous waste management. Several leaching procedures which would be helpful in solving these problems were introduced to discuss the future direction of leaching tests.

Key words: leaching test, hazardous wastes