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All Journal Jurnal Rekayasa Proses Reaktor IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Journal of Applied and Engineering Chemistry Jurnal Rekayasa Proses Jurnal Teknik Kimia Journal of Applied Engineering and Technological Science (JAETS) Journal of Integrated and Advanced Engineering (JIAE) SRIWIJAYA JOURNAL OF ENVIRONMENT International Journal of Science and Society (IJSOC) Jurnal Rekayasa Proses
Muhammad Djoni Bustan
Jurusan Teknik Kimia Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Upgrading vacuum residue by swelling of CO2 gas and catalytic cracking process by using Al2O3 catalyst. Aditya Retno Utami; Deby Ansyory; Sri Haryati; Muhammad Djoni Bustan
Sriwijaya Journal of Environment Vol 5, No 2 (2020): NEW ENVIRONMENTAL ISSUES
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.885 KB) | DOI: 10.22135/sje.2020.5.2.69-75

Abstract

Vacuum residue is a waste of the production process in the petroleum refining industry. Even though vacuum residue is waste, it still contains hydrocarbon compounds that can be reused as a petroleum derivatives products that have commercial value. Improving the quality of vacuum residue from waste to commercial products is carried out in several stage of the process. In this research, we applied the swelling process as an initial step to weaken and break the long chain carbon of vacuum residue in order to reduce energy consumption. Furthermore, the swelling products will be reprocessed in the catalytic cracking processes to improve the quality and quantity of the product yield. The application of the swelling process can reduce operating conditions temperatures up to 350ºC, and the use of Al2O3 catalyst in the cracking process can produces the product yield that have a good quality after performing the GC-MS analysis test. The content of hydrocarbons in this vacuum residue shows the dominance of aromatic compounds with high octane numbers. The optimum composition of 5%-wt catalyst showed chromatogram composition of 166 compounds with the highest peak at 3.26 retention time owned by toluene with an octane number of 91.
Synthesis and Characterization of CaO-Zeolite Catalyst by Sonochemical Engineering Method Widyarini Widyarini; Muhammad Djoni Bustan; Sri Haryati
IJFAC (Indonesian Journal of Fundamental and Applied Chemistry) Vol 7, No 3 (2022): October 2022
Publisher : IJFAC (Indonesian Journal of Fundamental and Applied Chemistry)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24845/ijfac.v7.i3.113

Abstract

Calcium Oxide (CaO) loaded on zeolite was categorized as a heterogeneous catalyst. The utilization of CaO catalyst could be implemented in catalytic pyrolysis enhance gaseous production. In this paper, CaSO4.2H2O is an active site embedded in natural zeolite, and the activity of the CaO-Zeolite catalyst is synthesized by a sonochemical impregnation-assisted drying process and calcination. The stirrer impregnation method was used as a control. CaO-Zeolite catalyst characterization and properties were identified via Scanning Electron Microscopy- Energy Dispersive X-Ray (SEM-EDX).The activation experiments were performed at an oven temperature of 120oC for 5 h and a calcination temperature of 300oC for 2 h. The synthesized catalysts of sonochemical were performed at 20 minutes, 20 kHz, and 1200 Watt, and the synthesized catalyst of stirrer were performed at 120 minutes, 1500 rpm, and 1000 watts. The experimental results revealed that the characterization of the catalysts prepared by the sonochemical method was better than that of the stirrer. Specifically, obtained CaO-Zeolite catalyst with Ca wt % increased from 0.86 wt% NZ (natural zeolite)  to (11.3 wt%, 14.15 wt% and 23.48 wt%) of sonochemical and (11.82wt%, 13.95 wt% and 20.64wt%) of stirrer. The results demonstrated that Ca wt%  by sonochemical in 20 minutes dispersed at support surface (zeolite)  more effective than stirrer in 120 minutes. These results were impacted by acoustic cavitation and shockwave of ultrasonic on solid-liquid transport and distribution. On the other side, sonochemical assisted the activation technique to minimize particle size and allowed metal oxide (CaSO4.2H2O) to be dispersed uniformly into the pores structure of the zeolite. The utilization of sonochemical in CaO-Zeolite synthesizing enhanced catalyst activity. Keywords: CaO/Zeolite catalyst, Calcination, Drying, Sonochemical Impregnation, Ca weight percentage, Characterization
Triglycerides of Crude Palm Oil to Biokerosene: Studies on Electrolysis and Electromagnetic Effect Sri Rizki Putri Primandari; Krismadinata Krismadinata; Dori Yuvenda; Remon Lapisa; Andre Kurniawan; Mulianti Mulianti; Muhammad Djoni Bustan; Sri Haryati; Gusni Sushanti; Tarig Elshaarani; Yus Donald Chaniago
Journal of Applied Engineering and Technological Science (JAETS) Vol. 5 No. 1 (2023): Journal of Applied Engineering and Technological Science (JAETS)
Publisher : Yayasan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/jaets.v5i1.3127

Abstract

Crude Palm Oil (CPO) is a potential feedstock for biokerosene. However, it is problematic when used directly because it is gummy, has a high viscosity and is degradable. Various conversion processes have been conducted that directly convert CPO into biokerosene, but it requires high temperature and pressure. Therefore, as a novelty, this study aims to develop the technology for converting triglycerides into biokerosene under relatively low operating conditions and producing similar petroleum kerosene by electrolysis-assisted and electromagnetic induction. In this study, the conversion technology process was conducted in three steps (i) converting triglycerides to Free Fatty Acids (FFA), (ii) converting FFA to alkanes, and (iii) converting alkanes to biokerosene. Step (ii) is assisted by the electrolysis process, meanwhile, step (iii) is assisted by electromagnetic irradiation. The finding showed that electrolysis obtained 73.47% yield of alkanes and electromagnetic irradiation obtained 78.02% yield of biokerosene.  Biokerosene is almost close to kerosene-based petroleum in terms of colour Saybolt, flash point and Net Heating Value. The findings of this study may provide an alternate technology approach for biokerosene synthesis and solution kerosene scarcity.
Exergy analysis and Exergetic sustainability index of package boiler Bustan, Muhammad Djoni; Haryati, Sri; Serigianto, Serigianto
Journal of Integrated and Advanced Engineering (JIAE) Vol 4, No 1 (2024)
Publisher : Akademisi dan Saintis Indonesia (ASASI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51662/jiae.v4i1.124

Abstract

Energy is one of the basic human needs. Economic growth and population growth in a country which continues to increase is directly proportional to the growth in energy needs required by society. Indonesia is the largest energy user in Southeast Asia, namely more than 36% of Southeast Asia's primary energy use. Utilization of the energy used will reduce the increase in production costs for an industry. The use of energy is better known as energy conservation. Energy and exergy analysis based on the first and second laws of thermodynamics is used to analyze the thermal system of industrial units. This can be applied to equipment units in the fertilizer industry to identify sources of inefficiency, determine their location and the amount of exergy destruction that occur. To reduce exergy destruction, this can be done by modifying the operating conditions of the package boiler. The results show that 94.3% of the total exergy destruction from the boiler package is obtained from the evaporator component with a value of 2.7 x 108 kJ/hr Modification of the operating conditions of the evaporator is carried out by reducing Boiler Feed Water (BFW) inlet temperature with T 100C (196 – 116 oC). The decrease BFW temperature will increase the amount of required latent heat and reduce the convection heat that will be carried by the flue gas to generate superheated steam. Optimization of the BFW temperature is performed be calculating the flue gas temperature and exergoeconomic analysis. Exergoeconomic analysis is performed by calculating the cost rate of exergy destruction (ĊD,k) and exergoeconomic factor (fk). The results obtained were that the temperature was optimum of BFW is at 161°C which resulted the reduction of exergy destruction of 6,2x106 kJ/hr and resulting difference cost losses based on actual data (196 oC) of Rp 1,370,354,743/hr. Exergetic Sustainability Index (ESI) used to demonstrate how reducing a system's environmental impact can be achieved by reducing its exergy consumption (destruction and losses) or increasing its exergetic efficiency. In this research, ESI Value was achieved at 0.918.
Disosiasi H2S dalam gas alam pada temperatur ruang menggunakan katalisator MgO: pengaruh jumlah katalis dan laju alir massa Devie Herdiansyah; Sri Haryati; Muhammad Djoni Bustan
Jurnal Rekayasa Proses Vol 13 No 2 (2019): Volume 13, Number 2, 2019
Publisher : Jurnal Rekayasa Proses

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.43154

Abstract

The presence of H2S in natural gas is very detrimental to ammonia industry because it can poison and deactivate steam reforming catalysts. In the ammonia plant Pusri-IB PT. Pusri Palembang, H2S was separated in the Desulfurizer Unit (201-D) by adsorption using ZnO adsorbent at low temperature (28 ° C). Unfortunately, in this process the ZnO adsorbent cannot be regenerated so that within one year the ZnO adsorbent will be saturated with sulfur. The alternative process of H2S separation is to dissociate H2S into its constituent elements (hydrogen and sulfur) with catalytic process. The magnesium oxide catalyst was chosen because magnesium oxide is a metal oxide compound widely known in the catalysis process and has two active sites. The highest H2S conversion that can be achieved by MgO catalyst is 92.29%. Unlike ZnO, MgO does not absorb H2S, but catalyzes the dissociation of H2S into hydrogen and solid sulfur without being changed consumed by the reaction itself so that the MgO catalyst has a longer life time than the ZnO adsorbent.
THE Copper Catalyst in Sulfur Reduction Process with Visible Light Ismail; Bustan, Muhammad Djoni; Haryati, Sri
International Journal of Science and Society Vol 7 No 1 (2025): International Journal of Science and Society (IJSOC)
Publisher : GoAcademica Research & Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/ijsoc.v7i1.1353

Abstract

Sulfur gas such as SOx is one of the harmful residual gases resulting from combustion in vehicle engines due to the high sulfur content in fuel oil, especially diesel. Conventional processes in sulfur reduction still use technology with high process operating conditions and are expensive, thus charging the selling price of low sulfur diesel oil. Light energy is a promising alternative in sulfur reduction process with low production cost. This research will examine the sulfur reduction process with red light assisted by tin catalyst. The results showed that tin catalyst increased the photon energy in red light with sulfur reduction up to 800 ppm in 10 hours. The removal of C-S and O-H groups indicates the formation reaction of DBTO2 after DBT can be cracked from diesel oil hydrocarbon.
Co-Authors Aditya Retno Utami Aditya Retno Utami Akbar Ismi Azis Pramito Andre Kurniawan Ansyory, Deby Deby Ansyory Devie Herdiansyah Devie Herdiansyah Dori Yuvenda Gusni Sushanti Ismail Isnandar Yunanto Krismadinata Krismadinata, Krismadinata Mardwita, Mardwita Mulianti Remon Lapisa Serigianto, Serigianto Sri Haryati Sri Haryati Sri Haryati Sri Haryati Sri Rizki Putri Primandari Tarig Elshaarani Utami, Aditya Retno Widyarini Widyarini Wijayanti, Metta Yus Donald Chaniago