Results of interlaboratory comparisons of column percolation tests

Comparison of percolation to batch and sequential leaching tests: Theory and data

“…Column leaching tests approximate natural conditions closer than any other laboratory test and at the same time yield more robust results than batch tests (Kalbe et al, 2007). Columns contain the sample in a packed bed which is percolated continuously with clean water usually from the bottom to the top (to avoid entrapped air).…”

“…Findings of the German joint research project ''Sickerwasserprognose" of the last 8 years show, that the column test is suitable for leaching of both inorganic and organic contaminants (e.g. Kalbe et al, 2007Kalbe et al, , 2008Grathwohl and Susset, 2001). These findings are reflected in a standardisation and validation project of the German Institute for Standardisation (lately published as DIN 19528, 2009).…”

“…batch and column tests) and tests of different scales (columns of different dimensions including lysimeters). Kalbe et al (2007), for example, report a remarkable agreement of leaching of organic and inorganic compounds including dissolved organic carbon (DOC) in a multiple laboratory comparison of column tests if concentrations are plotted versus LS. Furthermore, different physical column dimensions did not show any substantial influence on the percolation test results.…”

Dynamic flow-through sequential extraction for assessment of fractional transformation and inter-element associations of arsenic in stabilized soil and sludge

“…Also different patterns of leaching as function of pH were realized by the so-called pH stat test. To these tests overviews were presented in several papers [16][17][18][19][20][21]. Column leaching test had been also employed to study the mobility of arsenic in contaminated soils [8,20,22].…”

Reduction of phosphorus release from high phosphorus soil by red mud

“…The use of column leaching experiments, usually performed to better approximate field conditions, may provide information that is not available from batch leaching experiments and test approximate natural conditions closer than any other laboratory tested (Miretzky et al 2006;Kalbe et al 2007). The phosphorus concentrations in the leachate of un-amended and amended soil columns were shown in Fig.…”