Removal of metals by lime sludge (spent lime) used for water softening. Source: Baker et al. (2005).
Link to this table

Chemical Percent removal
pH=9 pH=10
Lead >95 >95
Cadmium >95 >95
Silver 80 85
Chromium III 70 85
Beryllium 75 >95
Arsenic V 40 75
Arsenic III 15 18
Mercury 20 55
Selenium IV 20 20
Selenium VI; Chromium VI negligible

This page was last edited on 2 August 2022, at 17:13.