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All Journal BERKALA FISIKA Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Bulletin of Chemical Reaction Engineering & Catalysis JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI JITEK (Jurnal Ilmiah Teknosains) Jurnal Penelitian Pembelajaran Fisika International Journal of Science and Applied Science: Conference Series Sainstek : Jurnal Sains dan Teknologi Physics Education Research Journal Automotive Experiences Pelita: Jurnal Pengabdian kepada Masyarakat Bulletin of Chemical Reaction Engineering & Catalysis
Ummi Kaltsum
Universitas PGRI Semarang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Veterinary Other

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Journal : Bulletin of Chemical Reaction Engineering

 1 
The Role of Concentration Ratio of TTiP:AcAc on the Photocatalytic Activity of TiO2 Thin Film in Reducing Degradation Products of Used Frying Oil Ummi Kaltsum; Affandi Faisal Kurniawan; Iis Nurhasanah; Priyono Priyono
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 3 Year 2017 (December 2017)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (480.54 KB) | DOI: 10.9767/bcrec.12.3.951.430-436

Abstract

The TiO2 thin film has been applied to reduce degradation products (free fatty acid/FFA and peroxide value/PV) in used frying oil under ultraviolet (UV) light irradiation. FFA and PV are degradation products in used frying oil that can cause various diseases in human. In this study, the TiO2 thin films were made from precursor solution with concentration ratio of titanium tetraisopropoxide (TTiP) and acetylacetone (AcAc) of 1:1, 1:2, 2:1, 2:3, and 3:2. The aim of this study is to investigate the effect of concentration ratio of TTiP and AcAc on the photocatalytic activity of TiO2 thin film in reducing FFA and PV of used frying oil. The spray coating method was used to deposit precursor solution of TiO2 onto glass substrate at 450 oC. All TiO2 thin films consist of spherical-like grain with dominant structure of TiO2 rutile. The band gap energy of TiO2 thin films was in the range 3.11-3.16 eV. Concentration ratio of TTiP and AcAc of 2:3 results in TiO2 thin film with highest photocatalytic activity in reducing FFA and PV of used frying oil. 
Reduction of Peroxide Value and Free Fatty Acid Value of Used Frying Oil Using TiO2 Thin Film Photocatalyst Ummi Kaltsum; Affandi Faisal Kurniawan; Iis Nurhasanah; Priyono Priyono
Bulletin of Chemical Reaction Engineering & Catalysis 2016: BCREC Volume 11 Issue 3 Year 2016 (December 2016)
Publisher : Department of Chemical Engineering - Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (492.641 KB) | DOI: 10.9767/bcrec.11.3.577.369-375

Abstract

The quality of used frying oil degraded due to the presence of products degradation, such as; PV and FFA which formed during the frying process. PV and FFA are harmful to human health. The photocatalytic activity of TiO2 thin film has been applied in various fields, especially in the environment. The aim of this study is to evaluate photocatalytic activity of TiO2 thin film for reducing PV and FFA in used frying oil. The TiO2 thin films were deposited on glass substrate by spray coating method at a temperature of 450 oC. The TiO2 precursor solution was prepared by mixing TTiP, AcAc, and ethanol. The thin films were varied into two conditions; as-deposited and annealed at a temperature of 500 oC. The morphology, crystalline structure, and optical properties of the thin films were characterized by scanning electron microscope (SEM), X-ray Diffraction (XRD), and UV-VIS spectrophotometer, respectively. The photocatalytic process was carried out by putting TiO2 thin film in used frying oil and irradiated by sunlight. The result showed that both of TiO2 thin films were still amorphous in nature. However, there was a peak with low intensity for annealed TiO2 thin film which corresponding to the TiO2 anatase crystals plane of (101). Annealing process improved crystallinity and changed the shape morphology of TiO2 thin films. The band gap was found to be 3.59 eV for as-deposited TiO2 thin film and 3.49 eV for the annealed-TiO2 thin film. The photocatalytic process shows that TiO2 thin films reduced FFA and PV of used frying oil up to 67.10% and 79.15%, respectively. Photocatalytic activity of annealed TiO2 thin film was higher than as-deposited TiO2 thin film. The results indicated that TiO2 thin film photocatalyst potential as the new alternative method to purify used frying oil. 
Co-Authors Aan Burhanudin Affandi Faisal Kurniawan Afwania Lutfa Ma’ani Ani Rusilawati Bella Mirdza Mutia Dewi Choirul Huda Ema Chintya Permatasari Endang Dian Rokhmawati Ernawati Saptaningrum Hadiyati Idrus Harto Nuroso Iis Nurhasanah Irfan Abd Rahim Irna Farikhah Joko Saefan Joko Siswanto K. Sofjan Firdausi M. Syaipul Hayat Muhammad Amiruddin Muhammad Amiruddin Nathan Hindarto Ngurah Ayu Nyoman Murniati Nur Khoiri Nuroso, Harto P Priyono, P Priyono Priyono Rahim, Irfan Abd Rokhmawati, Endang Dian Slamet Riyadi Wawan Kurniawan Yuris Setyoadi Yuris Setyoadi