Abstract
It has been done separation isopropyl alcohol (IPA) in water using activated bentonite as adsorbent. Preparation of activated bentonite is done using H 2 SO 4 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 (R 2 ) 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 -1 respectively.
| Original language | English |
|---|---|
| Article number | 012013 |
| Journal | IOP Conference Series: Earth and Environmental Science |
| Volume | 217 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 9 Jan 2019 |
| Event | 2nd International Conference on Collaboration Seminar of Chemistry and Industry, CoSCI 2018, in conjunction with 23rd Indonesian Society for Biochemistry and Molecular Biology, ISBMB 2018 - Surabaya, Indonesia Duration: 11 Oct 2018 → 12 Oct 2018 |
Keywords
- Bentonite
- isopropyl alcohol
- separation