Adsorption of Crystal Violet Dye Using Zeolite A Synthesized From Coal Fly Ash

11th Joint Conference on Chemistry in Conjunction with the 4th Regional Biomaterials Scientific Meeting

材料科学;化学;生物科学

Jumaeri^1 ; Kusumastuti, E.^1 ; Santosa, S.J.^2 ; Sutarno^2

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Semarang State University, Semarang, Indonesia^1

Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Gadjah Mada, Yogyakarta, Indonesia^2

关键词: Adsorption kinetics;    Crystal violet;    Dye adsorption;    Dye solutions;    Erlenmeyer flasks;    Freundlich adsorption isotherms;    Initial concentration;    Kinetic modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/172/1/012028/pdf
DOI  :  10.1088/1757-899X/172/1/012028

来源: IOP

【 摘 要 】

Adsorption of Crystal Violet (CV) dye using zeolite A synthesized from coal fly ash (ZA) has been done. Effect of pH, contact time, and the initial concentration of dye adsorption was studied in this adsorption. Model experimental of adsorption isotherms and adsorption kinetics were also studied. The adsorption is done in a batch reactor at room temperature. A total of 0.01 g of zeolite A was added to the Erlenmeyer flask 50 mL containing 20 mL of the dye solution of Crystal Violet in a variety of conditions of pH, contact time and initial concentration. Furthermore, Erlenmeyer flask and its contents were shaken using an orbital shaker at a speed of 200 rpm. After a specified period of adsorption, the solution was centrifuged for 2 minutes so that the solids separated from the solution. The concentration of the dye after adsorption determined using Genesis-20 Spectrophotometer. The results showed that the Zeolite A synthesized from coal fly ash could be used as an effective adsorbent for Crystal Violet dye. The optimum adsorption occurs at pH 6, and contact time 45 minutes. At the initial concentration of 2 to 6 mg/L, adsorption is reduced from 79 to 62.8%. Crystal Violet dye adsorption in zeolite A fulfilled kinetic model of pseudo-order 2 and model of Freundlich adsorption isotherm.