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Jurusan Teknik Kimia, Fakultas Teknologi Industri, Universitas Muslim Indonesia Jl. Urip Sumohardjo km. 05 Kampus 2 UMI Makassar, 90231
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INDONESIA
Journal Of Chemical Process Engineering
Published by Universitas Muslim Indonesia
ISSN : 25274457     EISSN : 26552957     DOI : https://doi.org/10.33536/jcpe.v8i2.644
Core Subject : Science, Agriculture, Engineering,
Aerospace Engineering Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering
The Scope and focus of the journal are : Chemical and Process Technology Energy, Water, Environment and Sustainability Coal, oil and Gas Technology Bioreseurce and Biomass Technology Particle Technology Separation and Purification Technology Food Technology Catalyst & Kinetics Technology Essensial Oil Technology Sugar Technology Material and Biomaterial Technology Biomedical Engineering Mineral Processing Powder Technology
Arjuna Subject : Energi (semua kategori) - Energi Terbarukan, Keberlanjutan dan Lingkungan
Articles 8 Documents
 1 
Search results for , issue "Vol. 9 No. 3 (2024): Special Issue" : 8 Documents clear
Optimization of Polypropylene-Based Polymer Composites Fabrication Using Manual Forming for Automotive and Energy Applications Ansyari, Muhammad Fadhillah; Utami, Yovi
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1453

Abstract

Polypropylene (PP)-based polymer composites are widely used in the automotive and energy industries due to their lightweight, strong, and corrosion-resistant properties. This study aims to optimize the fabrication process of polymer composites using the manual forming method, focusing on the effect of pressure and heating time on the material's mechanical properties. The materials used include polypropylene as the matrix and glass fibers as reinforcement. The process parameters varied include pressure (150–200 kgf/cm²) and heating time (10–20 minutes). Mechanical tests were conducted using a Universal Testing Machine (UTM) for tensile testing and an Izod Impact Tester for impact testing, following ASTM D638 and ASTM D256 standards. The results show that optimal pressure and heating time produced specimens with an average tensile strength of 35.3 MPa and impact energy absorption of 0.45 Joules. Although close to industry standards, uneven pressure distribution and air voids affected material homogeneity. In conclusion, the manual forming method can improve the quality of polymer composites for industrial applications, but further process parameter optimization is required to enhance material consistency.
The Influence of Carbonization Temperature Variations on the Quality of Durian Peel-Based Bio-briquettes Nury, Dennis; Luthfi, Muhammad Zulfikar; Saputra, Andri
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1486

Abstract

The increasing global energy demand and environmental concerns necessitate the development of alternative energy sources. Durian peel, an abundant agricultural waste in Indonesia, presents significant potential for bio-briquette production due to its high cellulose and lignin content. This study investigates the effect of carbonization temperature on the quality of durian peel-based bio-briquettes. Carbonization was conducted at 300°C, 400°C, 500°C, and 600°C, with proximate analysis and calorific value determination performed according to SNI 01-6235-2000 standards. The results demonstrate that higher carbonization temperatures reduce moisture and volatile matter while increasing fixed carbon and calorific value. At 500°C, the bio-briquettes exhibited optimal properties, including moisture content (7.47%), volatile matter (13.54%), and a calorific value exceeding 5000 cal/g, meeting the SNI standard. However, ash content at this temperature (9.33%) slightly exceeded the standard (≤8%), highlighting a trade-off between energy efficiency and residual minerals. This study concludes that 500°C is the optimal carbonization temperature for producing high-quality bio-briquettes from durian peel, balancing energy output and combustion efficiency. Further optimization of the process is recommended to enhance fixed carbon content and minimize ash. These findings contribute to sustainable energy practices by transforming agricultural waste into a renewable energy resource, addressing both waste management and energy challenges.
Analysis of the Effect of Adding Jatropha Seed Shell on the Physical and Thermal Properties of Recycled Polypropylene Composites Siti Masluhah, Via; Br Sembiring, Enjelika; Nasution, Chinta Radjeli Putri; Dwi Suyatmo, Reviana Inda; Santoso, Teguh Budi
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1487

Abstract

The increasing volume of plastic waste, particularly polypropylene (PP), poses a significant environmental challenge. Recycling is a crucial solution but often leads to degradation of PP's mechanical and thermal properties of PP. This study aims to enhance recycled PP quality by adding a natural filler in the form of Jatropha Seed Shell (JSS). JSS is a potential filler due to its good mechanical and thermal properties, low density, and recyclability. The research was conducted in two parts: first, without alkalization treatment, using recycled PP with varying JSS additions at 0%, 5%, 10%, 15%, and 20%. The Melt Flow Rate (MFR) test without JSS showed an average value of 20.620 g/10 minutes, decreasing to 15.380 g/10 minutes at 20% JSS. JSS addition also increased crystallinity from 30.92% to 36.14% and melting temperature from 163.9°C to 166.4°C with 20% JSS. The second part, with alkalization treatment using a 20% NaOH solution, aimed to improve JSS compatibility with the PP matrix.  The results showed that alkalization treatment improved the distribution of the filler within the matrix, leading to enhanced mechanical and thermal properties. The MFR value decreased more significantly in this treatment compared to without alkalization, with the lowest value at 14.55 g/10 minutes in the composite with 20% JSS. The degree of crystallinity increased to 33.9% with 15% JSS addition, while the melting temperature remained stable.
Optimisation of Biodegradable Plastic from Cassava Peel Starch with Additional Materials of Sugarcane Bagasse Cellulose Rahim, Herlina; Masda, Raehana Ramadhani; Al Adawiyah, Syardah Ugra; Lestari, Mega Fia
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1488

Abstract

The use of plastic in large quantities causes environmental pollution because it is not easily decomposed. One way to overcome this is to make bioplastics from natural materials that are easily decomposed such as cassava peel starch. However, the use of starch in making bioplastics still has low mechanical properties. Therefore, cellulose is added as an additive to improve the mechanical properties of bioplastics. This study investigated the potential of cassava peel starch modified with bagasse cellulose as a base material for bioplastics. The aim is to improve the mechanical performance and biodegradability of bioplastics to reduce the environmental impact of conventional plastics. The resulting bioplastics were evaluated based on water absorption, biodegradability, tensile strength, elongation, and elastic modulus tests. Variations in cellulose content showed a significant effect on the physical and mechanical properties of bioplastics. The addition of 18% cellulose provided the best water resistance, while 3% cellulose content resulted in the highest biodegradability. Optimal mechanical properties were achieved at 9% cellulose addition, with a tensile strength of 10.48 N/mm², elongation of 7.92%, and elastic modulus of 3.43 N/mm². However, these results are still below the standards for environmentally friendly plastics based on SNI 7188.7:2016 and SNI 7818:2014, which set higher parameters for water resistance, tensile strength, and elasticity. This bioplastic has the main advantage of being easily biodegradable, making it a potential alternative for certain applications.
Bias Testing of Mechanical Sampling System Based on Total Moisture and Ash Analysis Ichsan, A Muhammad Nur; Irviansyah, Alfian
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1489

Abstract

As one of the energy sources utilized in various industries, coal quality is determined by its maceral composition, mineral matter, and coalification rank. Generally, coal quality can be assessed through proximate and ultimate analyses conducted in laboratories. Coal samples can be collected from various locations, such as moving streams or stationary setups, using either manual or mechanical systems. In this study, a bias test was conducted on a mechanical sampling system. Bias is detected as the difference between test results and accepted reference values. The acceptability of reference values is established through simultaneous coal sampling using both the reference method and the system under testing. Bias testing is required for new installations, system relocations, system upgrades or modifications, and system maintenance. The procedure involves several stages, including pre-bias inspection, bias inspection, sample analysis, statistical analysis, and data interpretation. A total of 30 paired samples were analyzed, with the parameters measured being total moisture and ash content. These parameters were mathematically processed to calculate the Hotelling’s T² value, which was then compared to the T0² value to determine the presence or absence of bias. The results of the study indicated that the T² value was 4.425, while the T0² value for n = 30 and p = 2 was 6.885. This demonstrates that no bias was detected in the mechanical sampling system, as T² < T0².
Linear Regression Analysis on Fluid Flow Rate in Tank Level Control Rahayu, Puji; Ronald Sukwadi; Yahya, Agung Kurnia; Nurmalasari, Enny; Aini, Apsari Puspita
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1555

Abstract

This research was conducted to study the effect of pump speed on changes in fluid levels in the tank and linear regression analysis of fluid flow. The variation used is a 4 mm solenoid and a variable pump speed range of 30-50%. The results of increasing the level at a pump speed of 32% obtained a level of 82 mm and a pump speed of 50% obtained a level of 149.9 mm, with fluid flow rotation occurring in the first minute. In addition, the determination calculation uses actual fluid level data at time 0 seconds (n=1), time 60.27 seconds (n=30), and time 180 seconds (n=61), with a fluid level value of 1 mm, 118 mm, and 141 mm. So the determination evaluation (R2) obtained is 0.863, which indicates that the model is included in the high tolerance category.  So this indicates that the PID controller in this series of piping system equipment is still suitable for use because in the recording of the fluid flow data obtained no significant gaps were found. Apart from that, it can also be seen that the pump speed affects the fluid flow rate due to the change in mechanical energy into kinetic energy which pushes the fluid towards the tank. Process time also influences changes in fluid levels in the tank as a result.
Water Level and NPK Test of Bokashi Compost Fertilizer Results of Industrial Waste Processing Practical Work at the Mineral and Environmental Testing Laboratory Fitri Junianti; Katrina Yanti Tumanan; Andi Ariatmasanti Aksan; Zaidatul Mabruroh; Iksan Adiasa
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1536

Abstract

Compost is one of the products resulting from the Industrial Waste Processing practicum in the form of solid waste. This compost goes through a composting process and becomes one of the organic fertilizers containing macro and micronutrients. Compost is produced through the biological decomposition process of organic material, which is controlled and results in humus. Moisture content is one of the key factors in the composting process, and it is essential for determining the maturity and quality of compost. Moisture content refers to the amount of water in a material or object, such as soil (also known as soil moisture), agricultural materials and products, rocks, etc. Additionally, compost fertilizer contains nutrients such as nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and other elements. Based on testing, the sample rice husk: TSP 3:2:2 moisture content was 40.74%, and for another rice hull: TSP 3:2:2 sample, it was 43.14%. rice hull: TSP 3:2:2 had 0.74% for nitrogen content testing, and the second sample had 0.76%. Phosphorus content testing for rice husk: TSP 3:2:2 was 0.28%, while the second sample had 0.18%. rice husk: TSP 3:2:2 had 0.53% for potassium content testing, and the second sample had 0.509%. From these test results, it can be concluded that both samples meet the standards of SNI 19-7030-2004 for compost specifications from domestic organic waste. This research is expected to provide information on the quality of the bokashi fertilizer and be a reference in developing more optimal waste processing methods.
The The Effect of Seawater Use and Solution Composition on the Quality of Blackening Results Purnama Sari, Dewi; Razzaq, Khazainnur; Ikhwan, Ris Muhammad Noval; Rahmayanti; Kamaludin; Pradana Putra, Eriek Aristya; Larasati, Tantra Diwa
Journal of Chemical Process Engineering Vol. 9 No. 3 (2024): Special Issue
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v9i3.1566

Abstract

The study of the use of seawater and the composition of blackening solutions on the quality of blackening results is essential in increasing the efficiency of raw materials and finding an adequate formulation in the blackening process. Blackening is a black oxide coating process that aims to increase metal resistance to corrosion and wear. This study uses seawater as a solvent with blackening solution raw materials consisting of NaOH and oxidizers with varying compositions. The parameters for testing the quality of blackening results include color testing using the visual matching method, image color picker application, and corrosion resistance testing using the weight loss method. The study results showed that seawater can be used as a solvent in making blackening solutions by providing a somewhat contrasting black color and slower corrosion rate compared to solutions without seawater. NaOH with a percentage of 50%, 70%, and 80% in the corrosion test showed an increase in corrosion resistance of 10%, 30%, and 40%, respectively, after immersion for 30 minutes at a temperature of 150°C. The resulting blackening process not only provides aesthetic value through black coating but also increases protection against material surface degradation. This research is expected to provide an alternative formulation of a blackening solution that is more environmentally friendly and economically efficient, mainly by utilizing seawater as a solvent. In addition, these results are expected to be the basis for further development in blackening applications on various materials for industrial needs.

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