Batch Lead and Cadmium Ions Binding and Exchange Properties of Polymer-Coated Hydrous Iron(III) Oxide

The possih ilit y o r Ph( II ) and Cd( ll ) rcmova l rrom the aqueous solu ti ons hy polymer-coated iron( lll ) ox ide. having COOl-! runcti on.1I group. is studied. The elTect or several operaling vari ahles such as du rati on or agitati on. pH. initia l conce nt ration or adsorh.lIe and temperatu re [)n mcta l remov.1I hy sorhcnt has hcen investi gatcd in hatch mode slUdies. The process or uptakc i> governed hy the first-order kinet ics. The adsorpt ion kin' IC data ohta incd rromthe ex periments show th.llthe process or Ph(ll ) .JIld Cd(ll ) rC1l1ova i i., m'li nly contro lled hy the internal dirrusion . Sorption data h.we heen correhlted with h(;th L' lIl gmui r .Ind Freundlich adsorpt ion modcls a III I indicate hlvourahle adsorpti on wi th thi s new adsorhcnt materi ' ll. T he util ity or Ihc 'Idsorhcnl h ed .