Adsorption of Cu(II) Ions in Aqueous Solutions by HCl Activated Carbon of Oil Palm

29th Symposium of Malaysian Chemical Engineers 2016

Muslim, A.^1 ; Syamsuddin, Y.^1 ; Salamun, A.^1 ; Abubakar^1 ; Ramadhan, D.^1 ; Peiono, D.^1

Process Technology Laboratory, Department of Chemical Engineering, Faculty of Engineering, Syiah Kuala University, Banda Aceh

23111, Indonesia^1

关键词: Adsorption capacities;    Chemical functional groups;    Correlation coefficient;    Equilibrium adsorption capacity;    Initial concentration;    Oil palm empty fruit bunch (OPEFB);    Pseudo second order kinetics;    Surface area analysis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/206/1/012075/pdf
DOI  :  10.1088/1757-899X/206/1/012075

来源: IOP

【 摘 要 】

Activated carbon was prepared from oil palm empty fruit bunch (OPEFB) by pyrolysis at 873.15 K in a furnace and chemical activation using 0.01 M HCl. Fourier Transform Infrared Spectroscopy, Scanning Electron Microscopy and BET (Brunauer, Emmett and Teller) surface area analyses were taken into account to investigate the chemical functional group, to characterise the surface morphology and to determine total surface area the OPEFB AC, respectively. Experiments in batch mode were conducted to investigate Cu(II) adsorption capacity by the OPEFB AC whereas the system consisted of 1 g the OPEFB AC in 100 mL Cu(II) aqueous solution with initial concentration in the range of 10-70 mg/L, magnetic stirring at 75 rpm, room temperature of 300.15 K (± 2 K), at 1 atm and neutral pH over contact time in the range of 0-150 min. As the result, Cu(II) adsorption capacity increased exponentially over contact time and initial concentration. The Cu(II) adsorption kinetics followed the pseudo second order kinetics with the correlation coefficients (R2), kinetics rate constant and equilibrium adsorption capacity being 0.98, 4.81 mg/g and 0.15/min, respectively for initial Cu(II) concentration being 58.71 mg/L. In addition, Cu(II) adsorption isotherm followed the Langmuir equation with the R2value, the mono-layer and over-all adsorption capacity being 0.99, 5.92 mg/g and 0.17 L/mg, respectively.