Experimental study of Pb (II) solution sorption behavior onto Coffee Husk Bioactivated Carbon

2nd International Conference on Oleo and Petrochemical Engineering

Fona, Z.^1 ; Habibah, U.^1

Department of Chemical Engineering, State Polytechnic of Lhokseumawe, Jl. B. Aceh-Medan, km.280.5, Buketrata, Lhokseumawe, Aceh, Indonesia^1

关键词: Adsorption constant;    Atomic adsorptions;    Equilibrium concentration;    Freundlich isotherm model;    Initial concentration;    Sorption behaviors;    Sorption characteristics;    Sorption mechanism;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/345/1/012006/pdf
DOI  :  10.1088/1757-899X/345/1/012006

来源: IOP

【 摘 要 】

Coffee husk which is abundantly produced in the coffee plantations is potential to be a challenging adsorbent. The fate of Pb (II) solution in the sorption mechanism onto the adsorbent has been investigated. This paper aimed to study the efficiency of Pb (II) aqueous solution removal using activated carbon from coffee husk (CAC). The sorption characteristics were using two isotherm models, Langmuir and Freundlich, were also reported. The coffee husk from local plantations in Middle Aceh was carbonized and sieved to 120/140 mesh. The charcoal was activated using hydrochloric acid before contacted with the different initial concentrations of Pb (II) solution. The remaining concentrations of the metal in the specified contact times were determined using Atomic Adsorption Spectrophotometer at 283.3 wavelength. The result showed that the equilibrium concentrations were obtained in about 30 minutes which depended on the initial concentration. The sorption mechanism followed Freundlich isotherm model where the adsorption constant and capacity were accordingly 1.353 and 1.195 mgg-1. The iodine sorption was up to 1,053 mgg-1. Based on the ash and moisture content, as well as iodine sorption, the activated carbon met the national standard.