Abstract
It is essential to remove lead ions from solution. In this research, wheat straw was modified by diethylenetriamine and adsorption property of modified wheat straw (MWS) toward lead ions was evaluated at 303 K. Several experimental factors like initial pH, adsorbent dose, contact time were presented to study the effect of adsorption quantity. Solution pH near 5 was in favor of adsorption. The adsorption capacity from experiment was up to 69.4 mg/g. Pseudo-second order equation was best to describe the kinetic process while Langmuir model was best available to fit the adsorption equilibrium data. It was concluded that MWS may be good adsorbent to remove Pb(II) from solution.
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