Activated carbon paper-based materials were prepared from softwood pulp, activated powder, and polyester fiber through wet forming process. Then polyethyleneimine was loaded on the using physical impregnation method to fabricate green, low cost, degradable PEI/activated composite adsorbent (PPCA) for removal of Cr(VI) drinking water. The surface characteristics analyzed by SEM, EDX, BET, FT-IR,...