Column Holdup Formula of Soil Solute Transport

摘要

The shortcomings of the present two formulae for describing column holdup are analyzed and deductions are made to find a new formula. The column holdup, H_W, described by the new formula is dimensional, and related to soil solute transport kinesis and column physical properties. Compared with the other two column holduops, H_W is feasible to describe dimensional column holdup during solute transport process. The relationships betwee H_W and retardation factor, R, in different solute transport boundary conditions are established.