adsorbent synthesized from natural condensed tannin has been investigated using a series
of batch adsorption experiments. The study on the adsorption mechanism indicates that the
adsorbent performed in aqueous solutions as an ionic exchanger whose end group was
sodium ion (Na+). One lead (II) ion (Pb2+) was adsorbed onto the adsorbent by taking the
place of two Na+ ions. The maximum exchangeable Na+ present on the adsorbent was …