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Teguh Riyanto
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Editorial Office of Journal of Chemical Engineering Research Progress BCREC Publishing Group and PT Laboratorium Terpadu, Universitas Diponegoro Laboratory of Plasma-Catalysis (R3.5), UPT Laboratorium Terpadu, Universitas Diponegoro Jl. Prof. Soedarto, Semarang, Central Java, Indonesia 50275
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Journal of Chemical Engineering Research Progress
Published by Universitas Diponegoro
ISSN : -     EISSN : 30327059     DOI : https://doi.org/10.9767/jcerp
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Energy Engineering Materials Science & Nanotechnology
The Journal of Chemical Engineering Research Progress (e-ISSN: 3032-7059; Short Abbreviation Title: J. Chem. Eng. Res. Prog.) is an international research journal and invites contributions of original and novel fundamental research. The JCERP journal aims to provide an international forum for the presentation of original fundamental research, interpretative reviews and discussion of new developments in chemical engineering discipline. Papers which describe novel theory and its application to practice are welcome, as are those which illustrate the transfer of techniques from other disciplines, including: fundamentals of chemical engineering; advanced materials related to chemical engineering; applied/industrial chemistry; chemical reaction engineering kinetics; chemical reactor design and optimization; chemical engineering process design and computation; etc. related to chemical engineering discipline.
Arjuna Subject : Teknik Kimia (semua kategori) - Kimia Proses dan Teknologi
Articles 91 Documents
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Optimization of Operating Conditions for Enhanced Efficiency in Green Ammonia Production toward Sustainable Fertilizer Applications Azzahra, Balqis; Pala, Cornelley Kadja; Andaristi, Nayla Amira; Akmalia, Ruqoya; Hapsari, Yuliana Sinta Rizka
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20603

Abstract

This study investigates the enhancement of reaction efficiency in green ammonia production through the optimization of operating conditions using Aspen HYSYS simulation. Conventional ammonia synthesis is limited by its high energy demand, driven largely by extreme operating pressures and temperatures as well as the substantial load on compressors. To address these constraints, the process was modified by lowering the operating temperature in the main heating unit (Q‑101) and adjusting compressor pressure and recycle streams, thereby shifting the reaction equilibrium toward product formation while reducing overall energy requirements. Simulation results reveal that decreasing the temperature from 482.5 °C to 368.9 °C significantly increased the molar flow rates of nitrogen, hydrogen, and particularly ammonia, which reached 185.5 kmol/h. This outcome confirms that lower temperatures in an exothermic reaction enhance conversion in accordance with Le Chatelier’s principle. Furthermore, reducing the heat generated during compression lessens the demand on intercoolers and cooling units, improving overall thermal efficiency. The integration of multistage compressors and the recovery of waste heat provide additional gains in energy efficiency. Collectively, these findings demonstrate that relatively simple adjustments to operating parameters can substantially increase ammonia yield, lower energy consumption, and contribute meaningfully to process sustainability, reinforcing the potential of green ammonia as a more efficient and environmentally responsible pathway for low‑carbon fertilizer production. Copyright © 2026 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Enhancing Energy Efficiency of Maleic Anhydride Production via Heat Integration and Feed Preheating Nafisah, Vania Durrotun; Lieliani, Stefani; Huwaida, Khansa; Khairunnisa, Mira; Najma, Balqis Chaula
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20599

Abstract

This study explores strategies to enhance energy efficiency in maleic anhydride production through heat integration and feed preheating modifications within an existing process configuration. The process, based on benzene oxidation in a plug flow reactor followed by absorption and distillation, was modeled under steady state conditions to evaluate energy utilization across key unit operations. In the baseline setup, the reactor feed depended entirely on external heating, while significant thermal energy in the reactor effluent was lost through cooling utilities. To address this inefficiency, a modified configuration was introduced in which part of the effluent heat was redirected to the feed preheater, enabling internal energy recovery and reducing reliance on external utilities. Simulation results demonstrated a marked improvement in energy efficiency, with energy savings rising from 1.219×108 kJ/h (93.93%) to 1.625×108 kJ/h (96.04%) after modification. The redistribution of thermal load across the heat exchanger network confirmed that internal heat was effectively harnessed without incurring additional utility costs or capital investment. Overall, these findings highlight heat integration as a practical and economically advantageous approach to improving energy efficiency in maleic anhydride production while preserving operability and separation performance. Copyright © 2026 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Improving Heat-Exchange Network Efficiency Through Front-End Process Modification in the Drying Oil Production from Acetylated Castor Oil Soebiakto, Devieazy Poetri; Sabrina, Ilma; Alfinurazizah, Alfinurazizah; Ahmad, Aisha; Chrisnantoe, Valenciana; Ramadhani, Hawwa
Journal of Chemical Engineering Research Progress 2025: JCERP, Volume 2 Issue 2 Year 2025 (December)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20586

Abstract

Enhancing the energy efficiency of drying oil production is critical for reducing utility consumption and advancing process sustainability. This study explores front end heat integration modifications by replacing the fired heater with a process to process heat exchanger and employing the high-temperature bottom stream of the distillation column as an internal heat source. Comparative simulations using Aspen HYSYS V11 were performed for both the baseline and modified flowsheets. The redesigned system enables internal preheating through mixing and heat recovery, thereby eliminating the fired heater and lowering the cooling demand in downstream units. Consequently, the total net energy requirement decreases from 8.895×10⁶ kJ/h to 7.363×10⁶ kJ/h, corresponding to an efficiency gain of approximately 17.2%, while maintaining product purity at 99.97%. These results highlight the effectiveness of early stage heat integration strategies in reducing external utility demand, improving energy efficiency, and supporting more sustainable drying oil production. Future research may extend to comprehensive heat exchanger network (HEN) optimization and renewable-assisted heat recovery schemes. Copyright © 2025 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Design and Simulation of High-Yield Dimethyl Ether Synthesis Using Series Reactors and Intercooler Nurfiana, Saffanah Azka; Shofa, Fairuz Zahirah; Larasati, Larasati; Dayita, Yuri; Cahyaningsih, Salsabila
Journal of Chemical Engineering Research Progress 2025: JCERP, Volume 2 Issue 2 Year 2025 (December)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20568

Abstract

Dimethyl ether (DME, CH₃OCH₃), the simplest alkyl ether and a structural isomer of ethanol, has attracted considerable attention as a clean fuel and chemical intermediate. To enhance its production efficiency, process modifications were introduced and rigorously evaluated through simulation modeling. The methodology involved systematic optimization of operating parameters to achieve targeted performance criteria. A key innovation was the adoption of a series-reactor configuration integrated with an intercooler between reactors, designed to improve conversion and yield. The modified process demonstrated a substantial improvement in DME production, with yield increasing from 40.87% to 62.29%. These results confirm that the proposed process modification significantly augments both yield and conversion, thereby offering a more efficient and sustainable route for DME synthesis. Copyright © 2025 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Enhancing Ethyl Acetate Conversion from Acetic Acid Esterification by Optimizing Reactant Mole Ratio and Reaction Temperature Azizi, Fadhila Kusriana; Arumi, Mustika Sukma; Hidayat, Pangeran; Nurahman, Raihan Dwiki; Anggawijaya, Stela Nathalie
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20565

Abstract

Ethyl acetate is among the most widely utilized and produced compounds in the chemical industry, serving as a key solvent in coatings, adhesives, pharmaceuticals, and various synthesis processes. Its production typically occurs through the esterification of acetic acid with ethanol, a reaction that is both exothermic and reversible. These characteristics make the control of operating conditions critically important for achieving high conversion rates and minimizing energy consumption. In this study, the optimization of two primary operating parameters, reactant ratio and temperature, was undertaken to enhance the conversion of ethyl acetate. Simulation results revealed that the optimal conditions were achieved with a reactant mole ratio of 3:1 at a temperature of 135.7 °C, resulting in an ethyl acetate conversion of 97.21%. These findings underscore the significance of systematic parameter optimization in improving process efficiency, reducing costs, and supporting sustainable production practices within the chemical industry. Copyright © 2026 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Purity Enhancement of Vinyl Chloride Monomer from Ethylene Dichloride Using Distillation Column Optimization and Recycle Integration Putri, Abdiela Oktafina Alea; Dewi, Maharani Putri Tungga; Sofyar, Najwa Af Ida; Candraningtyas, Riani Estu; Zulfa, Syafa Nisrina
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20595

Abstract

Vinyl Chloride Monomer (VCM) is a key precursor in the manufacture of polyvinyl chloride (PVC), a polymer of considerable industrial significance. A major synthetic route to VCM involves the reaction of ethylene dichloride (EDC), producing VCM and hydrogen chloride as the principal products. This study aims to enhance the purity of VCM by implementing process improvements through the integration of distillation columns and recycling systems. The optimized configuration achieved an outstanding VCM purity of 99.97%, while simultaneously increasing energy efficiency and minimizing the formation of undesirable by-products. These results underscore the critical importance of advanced reactor design and purification technologies in elevating VCM quality, thereby contributing to more sustainable PVC production within the chemical industry. Copyright © 2026 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Process Optimization for Enhanced Dimethyl Ether Yield through Methanol Synthesis and Dehydration of Syngas-Derived Methanol Nugraha, Gayuh Tahta Aditama; Maulana, Fardan Akbar; Pratama, Muhammad Erlangga; Safrudin, Muhammad Hamim; Afdika, Fauzan Aqil
Journal of Chemical Engineering Research Progress 2025: JCERP, Volume 2 Issue 2 Year 2025 (December)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20584

Abstract

The global energy crisis and continued reliance on fossil fuels highlight the urgent need for sustainable alternatives. Dimethyl ether (DME) has emerged as a promising low carbon fuel owing to its clean combustion properties and versatility as an LPG substitute, diesel replacement, and chemical feedstock. This study focuses on optimizing the design of DME production from syngas derived methanol, with particular emphasis on conversion efficiency and thermal management. Base case simulations revealed that higher methanol dehydration conversion elevated reactor temperatures by nearly 100 °C, thereby disrupting equilibrium and hindering effective separation. To address these challenges, a modified process integrating cooling, heating, and distillation units was developed, achieving an 80% conversion and a DME yield of 97.6%, while simultaneously reducing excessive cooling requirements. These findings demonstrate that improved thermal control and separation strategies can significantly enhance both energy efficiency and environmental performance, reinforcing DME’s potential role in the transition toward cleaner energy systems. Copyright © 2025 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Improving Operational Energy Efficiency in the Acetaldehyde Production Process Through the Addition of a Heat Exchanger and Optimization of Heat from Reactors' Outlet Nazlia, Balqist; Fahira, Fitri Muthiah; Hapsari, Helena Novita; Putri, Pricellia Alexandra Natasya; Adyawita, Kanya Gading
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20561

Abstract

Enhancing the energy efficiency of acetaldehyde production is essential for advancing operational performance and supporting sustainable chemical manufacturing. This study investigates the effect of integrating an additional heat exchanger into the ethanol dehydrogenation flowsheet, positioned before the feed stream enters the process unit, on overall thermal efficiency. Thermodynamic simulations were conducted to compare the baseline configuration with the modified design. The added heat exchanger recovers energy from existing process streams, thereby reducing dependence on external heating utilities and minimizing unnecessary heat losses. Simulation results reveal a significant reduction in total energy demand, with overall heat consumption lowered by 507,602.4 kJ/h relative to the original system. These findings highlight the potential of strategic heat integration to markedly enhance the energy performance of acetaldehyde production. In conclusion, incorporating a heat exchanger prior to downstream heating units offers a practical and effective means of optimizing energy use while promoting more efficient and environmentally responsible process designs. Copyright © 2026 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Enhancing Green Methanol Production via CO2 Hydrogenation: Process Intensification using Plug Flow Reactor and Vanden Bussche-Froment Zaki, Faiz Fairuz; Alifio, Alifio; Irfan, Muhammad Nur; Boas, Job; Amrullah, Maulana Nizar; Ardan, Hanif Farrel
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20601

Abstract

The transition to renewable energy in Indonesia requires strategic solutions for carbon capture and utilization (CCU). Methanol synthesis from captured CO2 and green hydrogen offers a promising pathway but is hindered by thermodynamic equilibrium limitations and high energy consumption in the purification section. This study aims to develop an intensified process design for green methanol production integrated with a Direct Methanol Fuel Cell (DMFC) using Aspen HYSYS V11, specifically focusing on optimizing yield via a Plug Flow Reactor (PFR) and the Vanden Bussche-Froment (VBF) kinetic equation. The simulation results demonstrated that the Plug Flow Reactor (PFR) configuration achieved a single-pass CO2 conversion of 21.4% at 250 °C and 50 bar, highlighting the baseline challenge of equilibrium limitations in a conventional setup. Furthermore, the implementation of Heat Integration via a Plug Flow Reactor (PFR) and the Vanden Bussche-Froment (VBF) kinetic equation significantly reduced the total external heating utility requirement by utilizing the sensible heat of the hot reactor effluent. This strategy effectively lowered the energy load on external heaters, replacing high-cost utility usage with efficient internal heat recovery. The integrated DMFC system showed a potential electrical efficiency of 42%. Conclusion: The proposed process intensification significantly enhances the techno-economic feasibility of green methanol plants in Indonesia, offering a sustainable solution for industrial decarbonization. Copyright © 2026 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Improving Product Purity of Ethylene Glycol Production from Ethylene Oxide by Modify Process Using Multi-stage Distillation Nailendra, Mirza Aufaa; Wijaya, Maulana Reand; Panggabean, Rafael Christofer; Rifansyah, Thariq; Halimah, Yessa Liza
Journal of Chemical Engineering Research Progress 2026: JCERP, Volume 3 Issue 1 Year 2026 (June) (Issue in Progress)
Publisher : UPT Laboratorium Terpadu, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/jcerp.20572

Abstract

Ethylene glycol (EG) is an important industrial chemical widely used in the manufacture of polyester fibers, antifreeze formulations, and heat-transfer fluids. Industrially, EG is produced through the hydration of ethylene oxide; however, achieving high product purity remains a significant challenge due to the presence of water and higher glycols in the reaction mixture. This study proposes a process modification aimed at improving ethylene glycol purity through the implementation of a multi-stage distillation system. The conventional single-stage distillation configuration was evaluated and compared with a modified two-stage distillation scheme. Simulation results indicate that the proposed modification significantly enhances separation performance, increasing ethylene glycol mole fraction from 0.8991 in the unmodified process to 0.9990 in the modified configuration. The improvement is attributed to better distribution of separation duties and enhanced control of vapor–liquid equilibrium across multiple distillation stages. These findings demonstrate that multi-stage distillation, supported by rigorous process simulation, is an effective strategy for producing high-purity ethylene glycol and offers valuable insights for industrial process optimization and design. Copyright © 2026 by Authors, Published by Universitas Diponegoro and BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Page 8 of 10 | Total Record : 91

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