Adsorption characteristics of heavy metals ions on modified biopolymer

  • Ismaeel M Alwaan, Salah M S alhar
Keywords: No


Heavy metals, which are non-biodegradable and commonly accumulate in the environment, having both acute and long-term detrimental consequences, even at low concentrations, are among the many pollutants found in water. This thesis is an endeavor to read and give an answer for the adsorption of the heavy metals Cu+2 by using modified biopolymer from starch and treated wool by NaOH , using tetramethyl thiuram disulfide (TMTD) and ZnO as an catalyst. Studied on the adsorption of  Cu+2 by (atomic absorption spectroscopy) showed an increase in the adsorption capability  by increasing primary metal concentration, contact time, temperature, and pH. Also, the isotherm models of  Freundlich and Langmuir were studied. It is more acceptable to use the Langmuir isotherm model, and show the Dubinin-Radush kevich (D-R) model that indicates physical adsorption. Pseudo – first order, Pseudo-seconds order kinetics are also study. The pseudo – first - order was more suitable to describe the adsorption properties of Cu+2.The (starch-wool) was characterized by  Fourier Trans form Infrared Spectroscopy (FT-IR)and Scanning Electron Microscopy(SEM) . (starch wool) samples exhibit an absence of a sharp peak  By FT-IR (starch /wool) contained the major function a groups (N-H, C-H, and O-H).SEM was utilized to study the morphology of the surface that demonstrated the forming of new surface pores. It was concluded that there was a significant increase in the adsorption rate of copper ions in the wool starch samples compared to the single wool and starch samples.

How to Cite
Ismaeel M Alwaan, Salah M S alhar. (2022). Adsorption characteristics of heavy metals ions on modified biopolymer. Design Engineering, (1), 948-958. Retrieved from