Adsorption of Isopropyl Alcohol (IPA) in Water Using Activated Bentonite

12th Congress of Indonesian Soc. for Biochemistry and Molecular Biology in Conjunction With The 2nd Int. Conf. "Collaboration Seminar of Chemistry and Industry

生物科学;化学

Abdulloh, A.^1 ; Supriyanto, G.^1 ; Ningsih, O.W.^1

Department of Chemistry, Faculty of Science and Technology, Universitas Airlangga, Indonesia^1

关键词: Adsorption capacities;    Adsorption tests;    Co-relation coefficients;    Isopropyl alcohols;    Isotherm adsorption;    Langmuir models;    Optimum conditions;    Thermodynamic parameter;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/217/1/012013/pdf
DOI  :  10.1088/1755-1315/217/1/012013

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

It has been done separation isopropyl alcohol (IPA) in water using activated bentonite as adsorbent. Preparation of activated bentonite is done using H2SO4 1 M. Characterization of adsorbent includes structural analysis with XRD, surface area and pore size using the BET method. The adsorption test is carried out in a batch system with variations in stirring time, adsorbent mass, pH and temperature. Analysis of the amount of IPA adsorbed is determined by a picnometer. The results of the adsorption test showed that the adsorption capacity optimum of IPA by activated bentonite was 116.62 mg/g at optimum conditions, i.e. 40 minutes stirring time, 1 g of active bentonite mass, at 30 °C and acidity level 7. Model of isotherm adsorption of IPA in activated bentonite are isotherm Langmuir model with corelation coefficient (R2) of 0,9283. The thermodynamic parameters (ΔH°, ΔS° and ΔG°) are 189.37 J•mol-1,-1.08 J•mol-1•K-1 and 132.63 J•mol-1respectively.