Angelica Naka, Tetsuo Yasutaka
Column percolation tests may be suitable for prediction of chemical leaching from soil and soil materials. However, compared with batch leaching tests, they are time-consuming. It is therefore important to investigate ways to shorten the tests without affecting the quality of results. In this study, we evaluate the feasibility of decreasing testing time by increasing flow rate and decreasing equilibration time compared to the conditions specified in ISO/TS 21268-3, with equilibration periods of 48 h and flow rate of 12 mL/h. We tested three equilibration periods (0, 12, and 16 h) and increased the flow rate to 36 mL/h, three times the original specification. The results showed that optimization of the initial equilibrium period and flow rate could shorten the duration of column percolation tests from 20-30 days to just 7-9 days, significantly enhancing efficiency. These findings provide a foundation for future standardization efforts and practical applications in environmental assessments.
@article{eea49bc0-70bf-40b1-afa6-008fc0fa69c3,
title={Column percolation test for contaminated},
author={Angelica Naka and Tetsuo Yasutaka},
year={2026},
language={en}
}TY - JOUR TI - Column percolation test for contaminated AU - Angelica Naka AU - Tetsuo Yasutaka PY - 2026 LA - en ER -
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