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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 23 Documents
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Search results for , issue "2025: JCERP, Volume 2 Issue 2 Year 2025 (December)" : 23 Documents clear
Improving Glycerol Conversion by Implementing Recycle Streams and Reducing Distillation Steps in Glycerol Carbonate Production Wilujeng, Dinanti Putrisia; Kollelsy, Kezia; Prathista, Distaria Puja; Dwitasari, Sofiana
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.20415

Abstract

The rising surplus of glycerol from biodiesel production drives the need for its valorization into high-value compounds such as glycerol carbonate (GC). This study proposes a process intensification strategy to enhance glycerol conversion efficiency through transesterification with dimethyl carbonate (DMC). The modification involves incorporating a recycle stream for unreacted DMC and reducing one distillation column to minimize energy consumption and thermal degradation. Simulations were conducted using Aspen HYSYS® v11, modeling a CSTR operating at 95 °C and 1 atm with a DMC:glycerol molar ratio of 3:1. Process modification resulted in complete DMC utilization and a shift in separation strategy, with simulated glycerol conversion increasing from 91% to 99.98%. These findings demonstrate the trade-offs between energy efficiency and conversion performance in process redesign, offering valuable insights into more sustainable GC production. 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).
Optimization and Modification of the Hydrogen Peroxide to Propylene Oxide (HPPO) Process Pratama, Fikri Wisnu; Fadhlan, Zaidan; Purnamadjati, Thariq Abrar; Adjie, Wisnu Satrio
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.20419

Abstract

The production of Propylene Oxide (PO) through the Hydrogen Peroxide to Propylene Oxide (HPPO) process represents a cleaner and more efficient route compared to conventional methods. This project focuses on the design and feasibility of a chemical plant with an annual capacity of 10,000 tons of PO using propylene and hydrogen peroxide as feedstocks. The HPPO process, catalyzed by a titanium silicate (TS-1) catalyst, offers significant environmental and economic advantages, such as reduced by-products and lower energy consumption. The core reaction occurs in a convergent reactor under mild operating conditions, producing PO with water as the only by-product, thus minimizing environmental impact. This study focuses on process intensification and optimization of the Hydrogen Peroxide to Propylene Oxide (HPPO) process, with the goal of improving energy efficiency, enhancing mass utilization, optimizing reactor operating conditions, and minimizing waste generation through targeted process modifications. The results demonstrate that the HPPO process is a sustainable and economically viable option for small to medium-scale PO production, aligning with green chemistry principles and industrial scalability. 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 Energy Efficiency in Ammonia Production from Hydrogen and Nitrogen Through Optimizing Operating Condition Ramadhan, Daffa Pratama; Hutasoit, Fransiska Klarisa Teodora; Primaditya, Ghazy Arya; Aurielly, Muhammad Verrel; Muafi, Muhammad Yusuf Zachraey
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.20422

Abstract

As a key raw material in the fertilizer industry, global ammonia consumption showed a steady increase from 2010 to 2020, with an average annual growth rate of approximately 1.81%. The production of ammonia involves four primary stages: feed gas pre-treatment, syngas generation, syngas purification, and ammonia synthesis. The main feedstocks used in this process are natural gas, steam, and air. To accommodate the rising demand for ammonia, it is essential to implement a highly efficient production process that ensures a high conversion rate. One strategy to enhance efficiency involves reducing the operating pressure in the ammonia production process proves to be an effective strategy for enhancing overall energy efficiency. This adjustment lowers the compressor workload, which in turn reduces system temperatures and eases the demand on the cooling system. Importantly, the process maintains a gas-phase reaction environment and high conversion efficiency, indicating that energy savings are achieved without compromising reaction performance. The results confirm that pressure optimization lies within the thermodynamic and kinetic boundaries necessary for effective ammonia 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).
Process Intensification of Hydrodealkylation (HDA) for Benzene Production through Heat Integration and Gas Recycle Optimization Dani, Salsabilla; Atqiyani, Addila Arrofa’hiya Tri; Isna, Aline Arunnisa; Berliana, Yurieka; Maulana, Varel Rahmad
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.20416

Abstract

In the hydrodealkylation (HDA) process for benzene production, optimization was achieved through the integration of cryogenic distillation and hydrogen recycling techniques. Using Aspen HYSYS, the process was modeled and analyzed to improve energy efficiency by reusing heat from the waste heat boiler (WHB-01) and the partial condenser (PC-01). The energy recovered from these units was used to preheat both fresh and recycled toluene feeds, significantly reducing the consumption of fresh feed and operational costs. By implementing a hydrogen recycle loop, the process decreased the demand for fresh hydrogen, reducing hydrogen and toluene feed consumption from 125 kmol/h and 196 kmol/h to 111 kmol/h for both. This modification resulted in a conversion rate increase from 70% to 88.9% and achieved energy savings of 84%. The integration of cryogenic separation for methane valorization further enhanced the economic feasibility of the process, turning waste methane into a valuable product. These modifications demonstrated a significant improvement in energy efficiency and sustainability, making the modified HDA process more economically viable for large-scale benzene production. 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).
Conversion Improvement of Propylene to Acrylic Acid Process Farhan, Mohamad Syarif; Barus, Alfredo Daniel Alexander Tuhervan; Bahij, Alegi Hilmy; Nadeak, Kevin Benget Parulian
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.20433

Abstract

Acrylic acid (C3H4O2) is a chemical compound used widely in industry. This study aims to develop a modifed process for Arcylic Acid production through direct oxidation. The objective is to improve Acrylic Acid conversion over conventional methods. Process modeling and simulation were conducted using Aspen Plus, and the systems were optimized for operating conditions. In conclusion, both proposed methods offer viable and environmentally favorable alternatives for sustainable proyplene production, with the DC2M route offering superior economic performance. 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 Energy Efficiency by Using Liquid Benzene in Production of Ethylbenzene from Ethylene and Benzene Azrie, Claudya Purnama; Carmelita, Dea; Kusuma, Faiz Abhinaya; Azzahra, Nabila Putri
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.20420

Abstract

The production process of ethyl benzene through the alkylation reaction between ethylene and benzene is a crucial stage in the petrochemical industry, especially as the main raw material in the synthesis of styrene. The development and optimization of this process are important to increase reaction efficiency, reduce production costs, and minimize environmental impacts. This study aims to optimize the operating parameters of the alkylation reactor in order to obtain high ethylene conversion and maximum selectivity to ethyl benzene. The methods used include kinetic reaction modeling, process simulation, and sensitivity analysis to variables such as temperature, pressure, and mole ratio of ethylene to benzene. The simulation results show that the optimum conditions are achieved at a temperature of 650°F, a pressure of 300 psig, and a mole ratio of 10:1, with ethylene conversion reaching 97,3% and ethyl benzene selectivity of 99,6%. In conclusion, this optimization approach has succeeded in increasing the efficiency of the ethyl benzene production process and can be applied on an industrial scale to improve profitability and operational sustainability.
Quality Analysis of Biobriquettes Combination Ratio of Oil palm Frond and Water Hyacinth Waste with Durian Seed Flour Adhesive Sinaga, Mersi Suriani; Tambun, Rondang; Tjung, Melvan; Sitinjak, Dadi Oslar
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.20407

Abstract

This study investigates the production of biobriquettes from a mixture of oil palm frond waste and water hyacinth using durian seed flour as a sustainable adhesive. Biobriquettes were fabricated with varying mass ratios of oil palm frond to water hyacinth (25:75, 50:50, and 75:25) and adhesive concentrations (5%, 10%, 15%, and 20%). Durian seed flour was selected for its starch content, offering an eco-friendly alternative to conventional adhesive like tapioca flour without competing with food resources. Slow primary carbonization (pyrolysis) was employed as the fabrication method. The produced biobriquettes were analyzed for moisture content, ash content, volatile matter, fixed carbon, and calorific value. The optimal formulation was identified at a 75:25 ratio of oil palm frond to water hyacinth with 15% durian seed flour adhesive, yielding a moisture content of 5.91%, volatile matter of 13.97%, ash content of 3.05%, fixed carbon content of 77.07%, and a calorific value of 6,400.78 cal/g. These results demonstrate the potential of durian seed flour as an effective adhesive and highlight the feasibility of utilizing agricultural and invasive biomass wastes to produce high-quality, sustainable biobriquettes. 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).
Hybrid Approaches for Steam Demand Forecasting: Combining First Principles, Box and Jenkins, and Neural Network Models Agommuoh, Davies; Higginson, Antony; Brooks, Kevin; de Vaal, Philip
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.20485

Abstract

The pulp and paper industry relies heavily on batch sulphite digesters for chemical cellulose production, where steam is a critical utility – lack of steam prediction results in venting losses, increased costs, and a negative environmental impact. Accurate prediction of steam demand is therefore essential for optimising digester cooking cycles and resource allocation. This study aims to develop and compare predictive models for steam demand in batch pulp digesters using magnesium bisulphite cooking liquor. Three years of production data were pre-processed to extract digester temperature profiles and batch steam demands. Seven modelling approaches were evaluated: a mechanistic first-principles energy balance model, Box–Jenkins ARIMA, two neural network models (LSTM and CNN), and three hybrid models combining first-principles with ARIMA, LSTM, and CNN. The hybrid frameworks employed dimensionless parameters from the mechanistic model as exogenous variables to compensate for unavailable process data. Model accuracy was assessed using RMSE and MAE metrics. The results show that hybrid models consistently outperformed their standalone counterparts. In particular, the hybrid first-principles–CNN model achieved the highest predictive accuracy, demonstrating the CNN’s ability to extract features and capture nonlinear temporal dependencies in steam demand. The hybrid first-principles–ARIMA model also surpassed both the standalone ARIMA and mechanistic models. Integrating mechanistic insights with data-driven methods significantly enhances prediction accuracy in complex batch processes. The findings highlight the value of hybrid modelling strategies for improving steam demand forecasting, with potential benefits for process optimisation, energy efficiency, and batch scheduling in the pulp and paper industry. 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).
Enhance Removal Pollutant from Batik Industrial Wastewater via Photo- Fenton Process: Efficiency and Kinetic Study Setiawan, Oki; Adriani, Siti; Manalu, Haposan Vincentius; Amalia, Aninditiya; Dewi, Ifti Luthviana; Kamil, Insan; Sari, Darti Purnama; Sasniati, Popi
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.20467

Abstract

The present research evaluates the efficiency of the Photo-Fenton-like process under UV irradiation by varying ratio of hydrogen peroxide (H₂O₂) to Chemical Oxygen Demand (COD) and H₂O₂ to ferrous ion (Fe²⁺) using wastewater from a batik manufacturer in Gresik. Initial experiments demonstrated that varying the ratio of H2O2/COD contributes to Chemical Oxygen Demand (COD) removal, while maintaining a constant H2O2/Fe2+ ratio. The result reveals a significant effect on Chemical Oxygen Demand (COD) removal achieving 64.58% efficiency which indicates that highly reactive OH* radicals successfully generated in photo-Fenton-like process. Further optimization by increasing the ratio H2O2/COD = 15 (g/g) and H2O2/Fe2+ = 20 (g/g) resulting on maximum percentage of Chemical Oxygen Demand (COD) removal of 92.47% proving the massive production of OH* radicals. The kinetics reaction model which describes the Chemical Oxygen Demand (COD) degradation rate showed the BMG kinetic model, with parameters of 1/m = 0.9352, 1/b = 0.7159, and a coefficient of determination (R²) of 0.9986, indicating an excellent fit and high predictive accuracy of the kinetic model for this process. 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).
Comparative Study on the Characteristics and Performance of Ni-Impregnated and Non-Impregnated Natural Zeolite Catalysts in the Hydrocracking of Palm Oil to Biofuels Istadi, Istadi; Riyanto, Teguh; Salsabilla, Alda; Qotrunnada, Novaya Aulia
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.20527

Abstract

A catalyst was synthesized from Bayah’s natural zeolite with low crystallinity and uneven pore distribution. To overcome these limitations, the Bayah natural zeolite was subjected to activation and modification processes aimed at increasing its surface area, improving pore structure, and enhancing overall catalytic activity by impregnating with nickel metal which is active catalyst for cracking reaction. Therefore, this study compares the Ni-impregnated Bayah Natural Zeolite (Ni/ZAA) and non-impregnated Bayah Natural Zeolite (Ni/ZAA) with respect to performance of the hydrocracking of palm oil to biofuels (gasoline, kerosene, and diesel). The natural zeolite was pretreated via desilication using NaOH, followed by calcination. Ni was introduced into the zeolite through ultrasonic-assisted impregnation, and the resulting catalysts were characterized using XRD and XRF techniques. Hydrocracking was conducted at 500 °C with a WHSV of 0.1 min⁻¹ using both Ni/ZAA and non-impregnated ZAA catalysts. The liquid products were analyzed by GC-MS to determine selectivity and yield, including coke and gas formation. The desilication process enhanced slightly the Si/Al ratio and catalytic properties of the Bayah zeolite. While Ni impregnation was achieved, suboptimal processing conditions affected the quality of the resulting catalysts. Increasing Ni content improved crystallinity and catalytic activity but also promoted coke formation, which reduced reaction efficiency and liquid product yield. The highest biofuel yield was obtained using the non-impregnated ZAA catalyst, while the 10% Ni/ZAA catalyst showed reduced yield due to excessive coking and pore blockage. These findings suggest that while Ni enhances catalytic activity, excessive loading can lead to overactivity and reduced performance in biofuel production. 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).

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