Adsorption Effectivity Test of Andisols Clay-Zeolite (ACZ) Composite as Chromium Hexavalent (Cr(VI)) Ion Adsorbent

International Conference on Advanced Materials for Better Future 2017

Pranoto^1 ; Masykur, A.^1 ; Nugroho, Y.A.^1

Research Group of Analytical and Environmental Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sebelas Maret, Ir. Sutami street No. 36 A, Central Java, Surakarta

57126, Indonesia^1

关键词: Activation temperatures;    Adsorption capacities;    Calcination temperature;    Composition variation;    Concentration variation;    Initial concentration;    Surface area analyzers;    Temperature variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/333/1/012057/pdf
DOI  :  10.1088/1757-899X/333/1/012057

来源: IOP

【 摘 要 】

Adsorption of chromium hexavalent (Cr(VI)) ion in aqueous solution was investigated. This research was purposed to study the influence of the composition of ACZ, temperature activation, and contact time against adsorption capacity of Cr(VI) ion in aqueous solution. Determination of adsorption effectivity using several parameter such as composition variation of ACZ, contact time, pH, activation temperature, and concentration. In this research, andisol clay and zeolite has been activated with NaOH 3 M and 1 M, respectively. Temperature variation used 100, 200, and 400°C. While composition variation ACZ used 0:100, 25:75, 50:50, 75:25, 100:0. The pH variation was used 2 - 6 and concentration variation using 2, 4, 6, 8, 10, and 12 ppm. Characterization in this research used such as UV-Vis, Surface Area Analyzer (SAA) and Acidity Analysis. Result of this research is known that optimum composition of ACZ was 50:50 with calcination temperature 100°C. Optimum adsorption of Cr(VI) at pH 4 with removal percentage 76.10 % with initial concentration 2 ppm and adsorption capacity is 0.16 mg/g. Adsorption isotherm following freundlich isotherm with value Kf= 0.17 mg/g and value n is 0.963. Based on results, ACZ composite can be used as Cr(VI) ion adsorbents in aqueous solutions.