Pb(II) Adsorption on Eastern Spruce Sawdust (Turkey) by Applying Taguchi Method and Adsorption Isotherms
2021
Bilgin, Ayla | Ateş, Esra
Modern industry advances through time with the change in living conditions as more chemicals are used and released into the environment. This causes severe pollution problems, especially of heavy metals including lead (Pb(II)). Pb(II) is continuously released by different industries into the environment, and it leads to certain diseases such as anemia and kidney malfunction. This study examines the adsorption of Pb(II) from aqueous solution regarding eastern spruce sawdust (Picea orientalis) in Turkey, and SEM/EDS and FTIR analyses were applied to determine the chemical structure of Picea orientalis. Moreover, the Taguchi method was utilized to investigate the effects of initial metal ion concentration and contact time on Pb(II) removal. It was found that initial metal concentration has more impact on Pb(II) removal than contact time. The condition of 626 mg/L and 60 min by using 0.3 g sawdust usage was found to be the optimum setting for Pb(II) adsorption. Furthermore, the behavior of Pb(II) adsorption was examined by using Langmuir and Freundlich isotherms. The adsorption occurred not only on the monolayer but also on heterogeneous surfaces due to the R² values close to 1.
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