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Journal of Fundamentals and Applications of Chemical Engineering
Published by Institut Teknologi Sepuluh Nopember Surabaya
ISSN : -     EISSN : 2964710X     DOI : http://dx.doi.org/10.12962/j2964710X.v4i2
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering
Journal of Fundamentals and Applications of Chemical Engineering (JFAChE) (eISSN: 2964-710X) is managed by Department of Chemical Engineering, Faculty of Industrial Technology and Systems Engineering, Institut Teknologi Sepuluh Nopember (ITS), Surabaya. JFAChE is an international research journal which invites contributions of original and novel fundamental researches. The journal aims to capture new developments and initiatives in chemical engineering related and specialized areas. Papers which describe novel theory and its application to practice are welcome, as well as for those which illustrate the transfer of techniques from other disciplines. Featuring research articles and reviews, the journal covers all aspects related to chemical engineering, including chemical reaction engineering, environmental chemical engineering, and materials synthesis and processing. Published annually in August and December. It is open to all scientists, researchers, education practitioners, and other scholars, providing an opportunity for technology transfer and collaboration.
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 6 Documents
 1 
Search results for , issue "Vol 6, No 1 (2025)" : 6 Documents clear
Comparison of Polylactic Acid Polycondensation Using LASC Fe(DS)3 Catalyst and FeCl3 Metal Catalyst Saputra, Bayu Yusuf Eka; Aziz, Ahmad Musonnifin; Rohmah, Aisyah Alifatul Zahidah; Ni'mah, Hikmatun; Widjaja, Tri
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 1 (2025)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i1.22963

Abstract

Polylactic acid (PLA), also known as lactic acid, has become a promising candidate as a renewable resource for plastic production. The use of PLA as a plastic material can significantly reduce the problems caused by waste. In the production of Polylactic acid (PLA), there are byproducts such as water, while metal Lewis such as Fe (III) used in PLA production can rapidly decompose and be deactivated by water. This research aims to synthesize a water-resistant Lewis catalyst by Fe (III) Lewis metals with a surfactant called Sodium dodecyl sulfate (SDS), which will bond together to form Fe (III) dodecyl sulfate [Fe(DS)3]. This catalyst will then be compared to FeCl3 metal catalysts in terms of performance in PLA synthesize using the polycondensation method. The water-resistant Lewis catalyst is characterized using Fourier Transform Infrared (FTIR), X-Ray Diffraction (XRD), and Thermogravimetric Analysis (TGA). As for the PLA synthesized with Fe(DS)3 and FeCl3 catalysts under the same operating conditions, it is analyzed using viscometry to determine its molecular weight, Fourier Transform Infrared (FTIR), and X-Ray Diffraction (XRD). The results of the analysis of the LASC catalyst include: 1) FTIR spectra of Fe(DS)3 and SDS show similarity in stretching and bending vibration bands. 2) Crystallinity indices of 36.81% and 15.82% are obtained for SDS and Fe(DS)3, respectively. Results of the PLA analysis include: 1) The optimum temperature is 180 ℃, as it leads to an increase in molecular weight, while at 200 ℃, degradation occurs, resulting in a decrease in molecular weight. 2). FTIR result shows that lactic acid polymerization was achieved. 3) XRD analysis shows gentle diffraction from 10° to 26° which similar with literature. 4) The yields of PLA molecules synthesized by Fe(DS)3 gain with higher molecular weight compared to FeCl3 catalyst.
Vapor – Liquid Equilibrium of Linalool + β- Caryophyllene and α-Pinene + Linalool at Pressures of 30 and 60 kPa Faris, Satya Naufal; Fakhira, Amira; Wiguno, Annas; Tetrisyanda, Rizky; Kuswandi, Kuswandi
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 1 (2025)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i1.22156

Abstract

This research aims to obtain equilibrium data from essential oils, namely lavender oil. Lavender flowers are composed of several ingredients, such as essential oils (1-3%), alpha-pinene (0.22%), camphene (0.06%), beta-myrcene (5.33%), cymene (0.30%), limonene (1.06%). %), cineol (0.51%), linalool (26.12%), borneol (1.21%), terpinine-4-ol (4.64%), linalyl acetate (26.32%), geranyl acetate (2.14%), and caryophyllene (7.55%). This research focuses on determining vapor-liquid equilibrium (VLE) data for the binary systems Linalool + β-Caryophyllene and α-Pinene + Linalool at vacuum pressure of 30 kPa and 60 kPa. Research was conducted to support the equilibrium data for distillation process in the essential oil industry, by exploring the characteristics of VLE which is an important parameter in distillation column design. Experiments used a modified Othmer type ebulliometer and composition measurements were carried out using Gas Chromatography-Mass Spectrometry (GC-MS). The equilibrium data were correlated using Wilson, NRTL, and UNIQUAC model equations. The thermodynamic consistency tests have been performed using Wisniak Method. The research results showed that the VLE values obtained are thermodynamically consistent and the model used can correlate equilibrium with satisfactory accuracy. It was obtained from experimental data that for the Linalool + β-Caryophyllene system had the largest Average Absolute Deviation in temperature (AAD T) value of 0.74% and for the Alpha Pinene + Linalool system had the largest AAD T with a value of 0.28% for both pressures.
Effect of Sidoarjo Mud Inoculant and Bacillus subtilis on The Degradation of Tofu Liquid Waste in Microbial Fuel Cell Continuous Series Reactors Juliastuti, Sri Rachmania; Pramoryza, Michellia; Darmawan, Raden
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 1 (2025)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i1.22839

Abstract

The tofu industry in Indonesia generates large amounts of liquid waste with high BOD and COD, causing significant environmental impact. Microbial Fuel Cells (MFC) offer a sustainable solution for treating organic waste while generating electricity. Effective treatment of tofu liquid waste is essential. This study explores the use of Sidoarjo mud and Bacillus subtilis as inoculants in MFC systems, integrated with an advanced reactor design for improved degradation of pollutants. A Continuous Series Reactor was employed, equipped with an auto dosing pump for precise substrate feeding, optimizing microbial activity. The system was monitored using an Arduino Mega data logger and an ESP01 module for remote data transmission. The effectiveness of Sidoarjo mud and Bacillus subtilis was tested by measuring BOD, COD, and protein removal, with different inoculant combinations compared to a control group. The control group achieved BOD and COD removal rates of 70.43% and 47.92%, respectively. Sidoarjo mud alone improved these to 94.30% and 91.84%, while combining Sidoarjo mud with Bacillus subtilis increased removal rates to 94.70% and 92.55%. Protein degradation also improved by 79.79% with Bacillus subtilis. Sidoarjo mud and Bacillus subtilis effectively enhance waste degradation in MFC systems, providing a sustainable solution for tofu waste treatment.
Membrane Area Sensitivity Analysis to Achieve Higher CO2 Outlet Concentration Reformadilaga, Mochammad Rizky; Handogo, Renanto; Anugraha, Rendra Panca
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 1 (2025)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i1.22843

Abstract

Separation using membrane technology offers several benefits such as low energy requirement, simple flow process, and no phase change. Moreover, its process only requires sufficient area suitable for remote and offshore facilities. This research will focus on how to improve CO2 concentration in the membrane-2 output or permeate-2. It will discuss techno-economic and modify 2-stage membrane technology to achieve higher carbon dioxide concentration by evaluating several membranes using ASPEN HYSYS. From the simulation results, it was found that reduced membrane area had the effect of increasing the carbon dioxide concentration in permeate-2 but decreasing the gas flow rate. Lowering the membrane area can increase the concentration of CO2 at permeate-2 from 82.47 to 84.7 - 96 % mol of CO2. Based on the evaluation of several membrane areas, a membrane area of 2.5 m2 was chosen because it can produce 91.78% mol CO2 in permeate-2. From the economic analysis, total annual cost could reduce up to USD 1,426,296.
The Effect of Electric Field on Antioxidant Extraction from Avocado (Persea Americana) Seed Faizah, Nurul; Widiyastuti, W.; Setyawan, Heru; Nurtono, Tantular
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 1 (2025)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i1.19075

Abstract

Avocado seeds have gained attention as a promising natural ingredient for various applications. Utilizing avocado seeds reduces food waste and improves sustainability. Avocado seed contains a high concentration of bioactive chemicals as natural antioxidants that scavenge free radicals. This study investigates the impact of electric field (EF) treatment on avocado seed extraction enhancement. The effect of electric field strength ranging from 2.5 to 7.5 kV/cm with a treatment time of 5 minutes was investigated. Extraction yield, FTIR analysis, antioxidant activity (via the DPPH radical scavenging assay), and IC₅₀ values were obtained from the experimental data.  The data were analyzed to evaluate extraction performance and to determine free radical scavenging activity. The result indicates that the value of E influences the extraction result. The best extraction conditions was achieved at an electric field strength of 7.5 kV/cm. The highest performance was obtained using an electric field of 7.5 kV/cm with extraction yield 13.29%, antioxidant activity of 95%, and an IC50 concentration of 120 µg/mL. The FTIR spectrum shows several peaks at 3206, 2937, 1603, 1402, 1021, and 879 cm-1 representing OH, C-H stretch, C=C, -C-H stretch, C-O stretch, and in-plan deformation vibration CH, respectively, to indicate the presence of antioxidants. This study demonstrates that electric field-assisted extraction serves as an eco-friendly alternative to conventional methods for obtaining natural bioactive compounds from avocado seeds.
Characterization of Poly Lactic Acid (PLA) Based on PEG-200 Modification of Clay-CaCO3 as Subtitution to LDPE Coating Paper Rohmah, Aisyah Alifatul Zahidah; Widjaja, Tri; Sari, Citra Yulia; Fajrin, Alifah Nur Aini
Journal of Fundamentals and Applications of Chemical Engineering Vol 6, No 1 (2025)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j2964710X.v6i1.23018

Abstract

Plastics play a central role in daily life due to their lightweight nature, mechanical strength, low cost, and durability. Nevertheless, their environmental impact is significant, as they contribute to pollution and global warming. Polylactic Acid (PLA) has gained attention as a biodegradable alternative to conventional LDPE plastics. Although environmentally friendly, PLA exhibits inherent limitations such as brittleness and insufficient toughness, which restrict its broader application. To overcome these drawbacks, plasticizers like Polyethylene Glycol (PEG) 200 and reinforcing agents such as clay and calcium carbonate (CaCO₃) are added to enhance its mechanical performance. This research aims to investigate how these additives affect the resulting film properties. The bioplastic film was produced using a solvent casting method with chloroform as the solvent. The mixture was stirred at ambient temperature for six hours, then cast in a single step into a closed mold and allowed to rest overnight to form a film. The resulting film had a white appearance, slight transparency, and a smooth, slippery surface. Compared to films produced using a layered pouring approach, those formed via the one-pour technique exhibited superior thickness and mechanical strength. To characterize the effects of the additives, several analytical methods were employed: X-Ray Diffraction (XRD) to analyze crystallinity, Thermogravimetric Analysis (TGA) to assess thermal stability, Fourier Transform Infrared Spectroscopy (FTIR) to identify functional groups and chemical bonds, and Dynamic Mechanical Analysis (DMA) to determine mechanical properties such as tensile strength, Young’s modulus, and elongation at break. Surface morphology was further examined using Scanning Electron Microscopy (SEM). The most favorable results were observed in the composition containing 80% PLA, 10% PEG, 5% CaCO₃, and 5% clay. This formulation yielded a crystallinity of 96.71%, a decomposition temperature of 366.22 °C, elongation at break of 12.98%, Young’s modulus of 56.77 MPa, and a tensile strength of 1.25 MPa. These findings suggest that the film has strong potential as a coating material to replace LDPE.

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