cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Dessy Ariyanti
Contact Email
dessy.ariyanti@che.undip.ac.id
Phone
+62247460058
Journal Mail Official
j.reaktor@che.undip.ac.id
Editorial Address
Department of Chemical Engineering, Diponegoro University Jl. Prof. Soedarto SH Tembalang Semarang 50275
Location
Kota semarang,
Jawa tengah
INDONESIA
Reaktor
Published by Universitas Diponegoro
ISSN : 08520798     EISSN : 24075973     DOI : https://doi.org/10.14710/reaktor.xx.x.xx-xx
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Materials Science & Nanotechnology
Reaktor invites contributions of original and novel fundamental research. Reaktor publishes scientific study/ research papers, industrial problem solving related to Chemical Engineering field as well as review papers. The journal presents paper dealing with the topic related to Chemical Engineering including: Transport Phenomena and Chemical Engineering Operating Unit Chemical Reaction Technique, Chemical Kinetics, and Catalysis Designing, Modeling, and Process Optimization Energy and Conversion Technology Thermodynamics Process System Engineering and products Particulate and emulsion technologies Membrane Technology Material Development Food Technology and Bioprocess Waste Treatment Technology
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "Volume 24 No.1 April 2024" : 5 Documents clear
Effect of CaO/Fe2O3 Ratio and Oil/Methanol Molar Ratio on Biodiesel Production from Waste Cooking Oil Buchori, Luqman; Setiadi, Iqfan Dwi; Nurushofa, Faustina Alda; Anggoro, Didi Dwi
Reaktor Volume 24 No.1 April 2024
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.24.1.1-6

Abstract

Biodiesel is a renewable liquid fuel that can be produced through the transesterification reaction of biomass. The objective of this research was to examine the effect of comparative composition of CaO and Fe2O3 on CaO/Fe2O3 catalysts from eggshells and Fe2O3 in the production of biodiesel from waste cooking oil. In addition, it was also studied the effect of the ratio of oil and methanol on the yield and characteristics of the biodiesel produced. Catalysts were prepared through impregnation. The esterification-transesterification process was carried out with the conditions WCO:methanol molar ratio of 1:3, 1:6, 1:9, 1:12 and 1:15, catalyst (3%wt oil), heated at 65°C for 3 hours with a stirring scale of 1200 rpm. The results showed biodiesel production using CaO: Fe2O3 catalyst with the ratio of CaO: Fe2O3 70:30 and WCO:methanol molar ratio of 1:9 obtained higher yield (84.5%) compared to others. The best biodiesel yield produced is the CaO:Fe2O3 catalyst ratio of 70:30 and the WCO:methanol molar ratio of 1:9 with a biodiesel yield of 84.50% with a methyl ester content of 99.63% and a FAME yield of 84.14%. The biodiesel produced has met the requirements of the Indonesian National Standard (SNI) in terms of density and viscosity.
Identification of Isocyanate Number on IPDI and TDI Due to Storage Period and Their Impact on Composite Solid Propellant Pinalia, Anita; Ratnawati, Ratnawati
Reaktor Volume 24 No.1 April 2024
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.24.1.7-14

Abstract

Isocyanate compounds serve as a curing agent in the production of composite propellants, playing a crucial role in determining their characteristics. Due to its high reactivity with moisture, it is essential to determine the isocyanate number of stored samples after a specific duration. The investigation identified the isocyanate number of IPDI and TDI that had been held for 84 and 90 months. The FTIR analysis identified the presence of the NCO group at 2240 cm-1 for TDI and 2243 cm-1 for IPDI samples held for 84 and 90 months. The isocyanate number identification decreased by 1-2% after being stored for six months. This reduction in isocyanate quantity undoubtedly impacts the development of propellant compositions. The reduction in isocyanate content will alter the propellant formulation, leading to propellants with different characteristics due to its impact on the curing ratio (NCO/OH). The curing ratio greatly impacts the mechanical properties of composite propellant.
Peat Water Treatment Using Modified Red mud Ivontianti, Wivina Diah; Shalindry, Riysan Octy; Maleiva, Lalak Tarbiyatun Nasyin
Reaktor Volume 24 No.1 April 2024
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.24.1.15-21

Abstract

Red mud is an alumina refinery waste residue that has been used to develop an effective adsorbent for wastewater treatment, one of which can be applied to peat water. Peat water treatment is carried out using the adsorption method. This study sought to ascertain the impact of the acid types of acid HCl and H2SO4 solution on dealumination process to the characteristics of the red mud adsorbent based on the analysis of XRF and BET instruments. In addition, this study was to determine the effect of the effect of mass variations of the red mud adsorbent on the effectiveness of peat water treatment. This research was conducted on a laboratory scale using variations in the adsorbent mass of 1 g; 3 g ; 5 g and 7 g and variation of contact time used was 15, 30, 60, and 90 minutes . The results showed an increase in the Si/Al ratio from 1.064% to 1.697% for HCl, while for H2SO41.565%.  Increasing of surface area with HCl was 179.574% while using H2SO4 was 162.891%. The results of research on the adsorption process with variations in the mass of the adsorbent 1, 3, 5, and 7 grams obtained the results of peat water pH respectively were 6.6; 7.0; 7.0; and 7,1. In the Fe metal there were removal of 73.39%; 37.09%; 24.19% and -141.93%. Then for the organic matter removal efficiency were 53.07%; 50%; 44.30% and -17.98% respectively. In variation of contact time for the parameter Fe, there were removals of 29,03%, 27,41%, and 24,19% respectively. Then for organic matter the removal efficiencies were 32,46%, 54,82%, 48,25%, and 44,29%. The optimum condition based on the result obtained are the 5 g for the mass adsorbent and 30 minute for contact time. Keywords: adsorbent; dealumination; H2SO4; HCl; peat water; red mud.
The Photocatalytic Activity of TiO2 Nanotube Doped Zn for Methylene Blue Degradation Nursanto, Eduardus Budi; Floresyona, Dita; Hadi, Abdul
Reaktor Volume 24 No.1 April 2024
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.24.1.22-27

Abstract

TiO2 nanotube (TiO2-NT) is one of the promising materials for photocatalytic water remediation. TiO2-NT doped Zn (Zn/TiO2-NT) is synthesized from P25 Degussa via one step hydrothermal method. From XRD and UV-DRS analysis, it showed that Zn as a doping material led to decrease band gap energy and decrease the crystallite size. The best results obtained was Zn/TiO2-NT with a crystallite size of 7.14 nm, and band gap energy value of 3.18 eV. Photocatalytic activity of Zn/TiO2-NT was also tested for photocatalytic activity of textile dye (methylene blue) degradation.  During the photocatalytic activity for methylene blue degradation, the Zn/TiO2-NT shows higher activity compared to non-doped sample. The non-doped sample shows degradation activity of 87.72%, meanwhile the Zn/TiO2-NT shows degradation activity of 95.88%.
Gravity-Based PVC/PVP/SiO2 Membrane for River Water Treatment Aryanti, Putu Teta Prihartini
Reaktor Volume 24 No.1 April 2024
Publisher : Department of Chemical Engineering, Faculty of Engineering, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/reaktor.24.1.28-35

Abstract

In this study, UF-GDM membranes are made from PVC (12-14% weight), which is mixed with PVP (0-5% weight) and SiO2 (1-3% weight) in a DMAc solvent. The results showed that the PVC/PVP/SiO2 membrane formulation 12/5/1 produced a membrane with the lowest water contact angle of 55° and a permeate flux of 34 L.m-².h-1. However, the membrane is more susceptible to fouling, characterized by a 21% decrease in flux during 5 hours of operation. This is due to the large porosity of the membrane (84%). PVC/PVP/SiO2 formulations 14/2,5/1 showed the highest decrease in contaminants (turbidity above 99.9%, TDS of 47-51%, conductivity of 96%, and organic matter of 97.5%), but low permeate flux (8 L.m-².h-1) due to tighter membrane pores and high flux decrease (20%) due to fouling. The best formulation was obtained in a 12/2,5/1 PVC/PVP/SiO2 composition, with a more stable flux (37 L.m-².h-1) and a decrease of 9% over 5 hours. This formulation also showed a decrease in TDS of 38%, turbidity of 99.9%, conductivity of 96%, and organic substances of 98%. With clear water results, this formulation has the potential to be further developed in the manufacture of membranes for environmentally friendly and energy-efficient clean water supply.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2024 2024


Reset
Filter By Issues
All Issue Volume 25 No.1 April 2025 2025: Just Accepted and Article in Press Volume 24 No.3 December 2024 Volume 24 No.2 August 2024 Volume 24 No.1 April 2024 Volume 23 No.3 December 2023 Volume 23 No.2 August 2023 Volume 23 No.1 April 2023 Volume 22 No. 3 December 2022 Volume 22 No.2 August 2022 Volume 22 No. 1 April 2022 Volume 21 No.4 December 2021 Volume 21 No. 3 September 2021 Volume 21 No. 2 June 2021 Volume 21 No. 1 March 2021 Volume 20 No.4 December 2020 Volume 20 No.3 September 2020 Volume 20 No.2 June 2020 Volume 20 No.1 March 2020 Volume 19 No. 4 December 2019 Volume 19 No. 3 September 2019 Volume 19 No. 2 June 2019 Volume 19 No. 1 March 2019 Volume 18 No. 4 December 2018 Volume 18 No. 3 September 2018 Volume 18 No. 2 June 2018 Volume 18 No. 1 March 2018 Volume 17 No. 4 Desember 2017 Volume 17 No. 3 September 2017 Volume 17 No. 2 Juni 2017 Volume 17 No.1 Maret 2017 Volume 16 No.4 Desember 2016 Volume 16 No.3 September 2016 Volume 16 No. 2 Juni 2016 Volume 16 No.1 Maret 2016 Volume 15 No.4 Oktober 2015 Volume 15 No.3 April 2015 Volume 15, No.2, OKTOBER 2014 Volume 15, No.1, APRIL 2014 Volume 14, No. 4, OKTOBER 2013 Volume 14, No. 3, APRIL 2013 Volume 14, Nomor 2, Oktober 2012 Volume 14, Nomor 1, April 2012 Volume 13, Nomor 4, Desember 2011 Volume 13, Nomor 3, Juni 2011 Volume 13, Nomor 2, Desember 2010 Volume 13, Nomor 1, Juni 2010 Volume 12, Nomor 4, Desember 2009 Volume 12, Nomor 3, Juni 2009 Volume 12, Nomor 2, Desember 2008 Volume 12, Nomor 1, Juni 2008 Volume 11, Nomor 2, Desember 2007 Volume 11, Nomor 1, Juni 2007 Volume 10, Nomor 2, Desember 2006 Volume 10 No. 1 Juni 2006 Volume 09 No. 02 Desember 2005 Volume 09 No.1 Juni 2005 Volume 08 No.2 Desember 2004 Volume 08 No.1 Juni 2004 Volume 07 No.2 Desember 2003 Volume 07 No. 1 Juni 2003 Volume 6 No. 2 Desember 2002 Volume 6 No. 1 Juni 2002 Volume 5 No.2 Desember 2001 Volume 5 No. 1 Juni 2001 Volume 3 No.1 Desember 1999 More Issue