... ndng hdp thu cdc ion kim logi ndng nUdc ciui khodng bentonite Viet Nam Ten tieng Anh: Research of treatment method to improve the ability of absorption for heavy metal ions on Vietnamese bentonite ... iiuo ddi ion: H" (bentonite) +Mn-"(Fe""),^j < > H",^+Mn-" = (Fe*^^) (bentonite) Sir triio d6i ion niiy plui thugc viio bim chfit bentonite, nhiet do, sir khuech tiin ion kim loiii, vii kfch thudc lo ... vii lugng cation bii trir miing ludi Bentonite cd the ~e hap phu tdt cac ion kim loiii nang, khii nang hfip phu ddi vdi Ciic ion la khac No phu thuoc vao dicn tfch va biin kfnh ion Ion cd hoii...