Figure 5From: Dynamics in leachate chemistry of Cu-Au tailings in response to biochar and woodchip amendments: a column leaching studyDynamic of Fe in the first 50-ml leachate over six cycles of leaching. EHM, pure tailings; EHM + 20% woodchips, tailings with woodchip; and EHM + 10% biochar, tailings with biochar amendment.Back to article page