Jute Stick Powder: A new approach to efficient biosorbent for the simultaneous removal of Pb, Cr and Cd from waste water
This research was aimed to evaluate the potential of biosorption technique in more realistic conditions that appeal to the industry by exploiting locally available biosorbents such as jute stick powder (JSP), an agricultural product, for the removal of toxic Pb(II), Cr(III) and Cd(II) ions from wastewater. Fourier transform infrared spectroscopy (FTIR) and Scanning electron micrographs (SEM) analysis proved that the surface of biosorbent was porous, with heterogeneous structures that contained high internal spaces. The removal efficiencies of the mixture of the target metals by JSP were optimized with respect to pH, initial metal concentration, shaking time and biomass dose. Biosorption performance of JSP in multiple metal systems was above 90 percent adsorption for tested metal ions. Biomass regeneration efficiencies up to 98% were achieved using acid as eluent. Sorption performance of the JSP as biosorbent was examined by classical adsorption equilibrium isotherms, kinetics in batch systems, and dynamic continuous flow studies. Batch sorption studies revealed that pseudo-first, pseudo-second-order, and Langmuir isotherm models were suitable to describe the metals sorption kinetics and equilibrium, respectively.
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