Removal of zinc (II) ion from aqueous solution by adsorption onto activated palm midrib bio-sorbent

3rd International Conference on Chemical Engineering Sciences and Applications 2017

Mulana, F.^1,2 ; Mariana, M.^1 ; Muslim, A.^1 ; Mohibah, M.^2 ; Halim, K. H. Ku^2

Department of Chemical Engineering, Faculty of Engineering, Syiah Kuala University, Darussalam, Banda Aceh, Indonesia^1

Faculty of Chemical Engineering, Universiti Teknologi MARA, Shah Alam, Malaysia^2

关键词: Activator concentration;    Adsorption capacities;    Adsorption of metal ions;    Adsorption process;    Atomic absorption spectroscopy methods;    Equilibrium data;    Ion concentrations;    Langmuir isotherm;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/334/1/012027/pdf
DOI  :  10.1088/1757-899X/334/1/012027

来源: IOP

【 摘 要 】

In this paper, palm midrib that was activated with mixed citric acid and tartaric acid as biosorbent was used to remove Zn (II) ion from aqueous solution. The aim of this research is to activate palm midrib by using a mixed citric acid and tartaric acid and to determine adsorption capacity of activated palm midrib biosorbent on Zn (II) ion uptake from aqueous solution. The effect of several parameters such as contact time, initial Zn (II) ion concentration and activator concentration on the degree of Zn (II) ion removal was examined. Atomic Absorption Spectroscopy method was performed to determine adsorbed amount of Zn (II) ion into activated biosorbent. The result showed that the adsorption process was relatively not so fast and equilibrium was reached after contact time of 120 min. The adsorption capacity of biosorbent reached a maximum when the concentration of mixed citric acid and tartaric acid was 1.6 M. The optimum adsorption capacity was 5.72 mg/g. The result was obtained on initial Zn (II) ion concentration of 80 ppm for 120-min contact time. Langmuir isotherm was found as the best fit for the equilibrium data indicating homogeneous adsorption of metal ions onto the biosorbent surface.