Heavy Metal Biosorption Characteristics of the Submerged Aquatic Plant (Nasturtium officinale)

Abstract

In the present investigation an aquatic plant, Nasturtium officinale

was examined for its biosorption ability of heavy metal ions. The results

obtained from biosorption experiments were used to understand the

driving forces that govern the interaction between metal ions and

biosorbent. The experimental biosorption data were fitted to the

Scatchard plot, Langmiur and Freundlich isotherms. According to the

parameters of the Langmiur isotherm, the maximum biosorption capacities

of Cd²⁺ and Co²⁺ were 0.56 and 0.49 mg/g, respectively. In view

of Freundlich isotherms, the maximum biosorption capacities of Cd²⁺

and Co²⁺ were 2.23 mg/g for both of metal ions.