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Iis Nurhasanah
Department Of Physics, Faculty Of Science And Mathematics, Diponegoro University, Jl. Prof. Soedarto SH, Tembalang, Semarang 50275, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Veterinary

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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 : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | 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. 
Evaluation of Novel Integrated Dielectric Barrier Discharge Plasma as Ozone Generator Muhammad Nur; Ade Ika Susan; Zaenul Muhlisin; Fajar Arianto; Andi Wibowo Kinandana; Iis Nurhasanah; Sumariyah Sumariyah; Pratama Jujur Wibawa; Gunawan Gunawan; Anwar Usman
Bulletin of Chemical Reaction Engineering & Catalysis 2017: BCREC Volume 12 Issue 1 Year 2017 (April 2017)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.12.1.605.24-31

Abstract

This paper presents a characterization of an integrated ozone generator constructed by seven of reactors of Dielectric Barrier Discharge Plasma (DBDP). DBDP a has spiral-cylindrical configuration. Silence plasma produced ozone inside the DBDP reactor was generated by AC-HV with voltage up to 25 kV and maximum frequency of 23 kHz. As a source of ozone, dry air was pumped into the generator and controlled by valves system and a flowmeter. We found ozone concentration increased with the applied voltage, but in contrary, the concentration decreased with the flow rate of dry air. It was also found that a maximum concentration was 20 mg/L and ozone capacity of 48 g/h with an input power of 1.4 kW. Moreover, in this generator, IP efficiency of 8.13 g/kWh was obtained at input power 0.45 kW and air flow rate of 9 L/min. Therefore, be the higher ozone capacity can be produced with higher input power; however, it provided lower IP efficiency. The effect of dry air flow rate and applied voltage on ozone concentrations have been studied. At last, spiral wire copper was very corrosive done to the interaction with ozone, and it is necessary to do a research for finding the best metals as an active electrode inside of the quartz dielectric. 
French Fries-Like Bismuth Oxide: Physicochemical Properties, Electrical Conductivity and Photocatalytic Activity Yayuk Astuti; Fauzan Musthafa; Arnelli Arnelli; Iis Nurhasanah
Bulletin of Chemical Reaction Engineering & Catalysis 2022: BCREC Volume 17 Issue 1 Year 2022 (March 2022)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.17.1.12554.146-156

Abstract

Bismuth oxide synthesis using hydrothermal method has been conducted. This study aims to examine the effect of the hydrothermal reaction time on product characteristics and photocatalytic activity in degrading methyl orange dye. Bismuth oxide synthesis was initiated by dissolving bismuth nitrate pentahydrate (Bi(NO3)3.5H2O) and Na2SO4 in a distilled water and added NaOH gradually. The solution formed was transferred into a Teflon-lined autoclave and heated at 120 °C with time variations of 8–16 h. The formation of bismuth oxide was indicated by the vibrations of the Bi−O−Bi and Bi−O groups and the crystal structure consisting of a-Bi2O3, β-Bi2O3, and g-Bi2O3. In addition, the highest photocatalytic activity can be examined through several factors, such as: content of Bi−O−Bi and Bi−OH groups, crystal structure, band gap values, morphology, and surface area, acquired as a result of the effect of hydrothermal reaction time. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Co-Authors . Istadi Abidin, Nur Ade Ika Susan Affandi Faisal Kurniawan Agus Bashori Agus Subagio Aldilla Lutfia Ali Khumaeni Andi Wibowo Kinandana Andi Wibowo Kinandana Anwar Usman Arkadea Pringgodani, Andra Arnelli Arnelli Bambang Ariwahjoedi Eko Hidayanto Eko Hidayanto Fajar Arianto Fajar Arianto Fatikasari, Tanty Fauzan Musthafa Gunawan Gunawan H Hadiyanto Hella Arofah Heri Sutanto Hernowo, Alfian Holyness Nurdin Singadimedja I. Istadi Isrina Nur Laili Kadarisman Kadarisman Karnaji Karnaji Karnaji, Karnaji Khairurrijal Khairurrijal Kinasih, Diah Ayu Suci Maman Budiman MARIA BINTANG Maryanto - Mikrajudin Abdullah Mubarokah, Nafaul Muhammad Nur Muhammad Nur Mukti, Nursanti Ajune Nasrullah, Faiz Ndaru Adyono Nofi Marlini Nursidi Yunanto Nurul Wahyu Puspaningrum P Priyono, P Pandji Triadyaksa Paramita, Safira Arta Pratama Jujur Wibawa Pratiwi, Salsa Dila Nisa Priyono Priyono Ririn Futikhaningtyas Rukmono, Dito Andi Rulhendri Rulhendri Sari Pratiwi Singgih Wibowo Sukirno Sukirno Sulistia Nurdianik Sumariyah Sumariyah Susanto Haryadi, Eri Syamsul Arifin Syifa Avicenna Tri Windarti Triadiyaksa, Pandji Ummi Kaltsum Very Richardina Very Richardina Wahyu Ambikawati Weni Safitri Widiyanto Widiyanto Yayuk Astuti Yunita Indriyani Zaenal Arifin Zaenul Muhlisin Zaenul Muhlisin