Sorption of iron from phosphoric acid solution using polyacrylamide grafted activated carbon

Abstract EN

Polyacrylamide grafted activated carbon (PAAm-Ac) was prepared from chemically activated carbon of rice husk and rice straw onto polyacrylamide.

The prepared composite adsorbent was used for removal of iron from wet-phosphoric acid solution through batch- and column experiments.

Different parameters affecting the adsorption process such as pH, contact time, metal ion concentration, adsorbent dose and anion concentration were investigated.

The adsorption isotherms were studied to evaluate the maximum sorption capacity of adsorbent.

The results showed that the adsorption is highly pH-dependent and reach 95% at initial concentration of 50mg/l at pH 4.8.

The equilibrium adsorption follows Langmuir isotherm well with maximum Fe(III) uptake capacity of 6.15mg/g.