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La Ifa
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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 5 Documents
 1 
Search results for , issue "Vol. 10 No. 1 (2025): Journal of Chemical Process Engineering" : 5 Documents clear
Evaluation of Electrocoagulation Process Efficiency in Laboratory Wastewater Treatment with Various Current Densities Fatimura, Muhrinsyah; Tuty Emilia Agustina; Ian Kurniawan; Rully Masriatini; Nurlela; Reno Fitriyanti
Journal of Chemical Process Engineering Vol. 10 No. 1 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1533

Abstract

Laboratory wastewater contains harmful compounds such as COD, TSS, heavy metals, and toxic compounds that require treatment before being discharged into the environment. Laboratory wastewater contains various hazardous pollutants that can pollute the environment if not managed properly. This study aims to evaluate the efficiency of the electrocoagulation process in the treatment of laboratory wastewater of the Chemical Engineering Study Program of PGRI University Palembang with variations in current density and reaction time. The experimental method was used by designing an electrocoagulation reactor using aluminum electrodes. The independent variables tested include current density (76.92 A/m², 87.17 A/m², and 102.56 A/m²) and reaction time of 15, 30, 60 minutes. Parameters analyzed included COD, TSS, TDS, pH, electrode consumption, and energy consumption. The results showed that the electrocoagulation process effectively reduced pollutant parameters; at a current density of 102.56 A/m² for 60 minutes, COD decreased to 63.5 mg/L, TSS to 23.52 mg/L, pH increased to 8, and turbidity reduced to 20.48 NTU. The specific energy consumption reached 18.2 kWh/m³ with an operational cost of Rp27,300/m³. Based on the analysis, the optimal current density for laboratory wastewater treatment is 102.56 A/m² with a reaction time of 60 minutes. Electrocoagulation technology is recommended as an efficient, effective, and environmentally friendly treatment method for laboratory wastewater in higher education institutions.
Analysis of the Influence of Center tube on Cyclone Preheater Efficiency in Production Units in the Cement Industry Susmanto, Prahady; Viola Yuliantika; Sryatin Arya
Journal of Chemical Process Engineering Vol. 10 No. 1 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1586

Abstract

Cyclone Suspension preheater is an important part of the kiln unit which aims to separate materials and hot gases. The Suspension preheater consists of two strings, namely strings A and B and consists of 4 stages with stage 4 and stage 3 of string B not having a center tube. The efficiency calculation is carried out to determine the ability of the cyclone to separate material and gas and compare the efficiency of the cyclone which has a center tube with a cyclone without a center tube. The efficiency calculation is calculated using the Bohnet calculation. The efficiency calculation was obtained at stage 1 string A of 92.15%, stage 1 string B of 92.16%, stage 2 string A of 87.71%, stage 2 string B of 87.627%, stage 3 string A of 81.987%, stage 3 string B of 78.008%, stage 4 string A of 72.877%, and stage 4 string B of 73.459%. There was a decrease of 4% from stage 3 string A to stage 3 string B. A reduction in efficiency was observed in cyclones without a center tube. The gas flow in the cyclone is more regular with the presence of a center tube and has a longer residency time compared to a cyclone without a center tube. Acyclone without a center tube has a chaotic flow and turbulence can increase so that the separation between particles and gas is inefficient. The presence of a center tube effectively improves both separation efficiency and gas flow stability in the cyclone.
Effect of Sulfur Content in Wetar Pyrite Waste on the Formation Process of Sulfuric Acid Products at AIM Project Morowali Yulian Putra, Rizky Wira; Totok Eka Suharto; Erna Astuti
Journal of Chemical Process Engineering Vol. 10 No. 1 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1795

Abstract

Pyrite ore is a sulfide mineral commonly found in mining operations, and has the potential to be converted into valuable chemical products. The substantial quantity of high-quality pyrite ore waste generated by the Wetar Copper Mine is non-reusable, potentially causing environmental issues upon exposure to air.  To mitigate potential environmental contamination at the Wetar Copper Mine, the AIM Project was initiated to process high-quality pyrite ore waste into sulfuric acid. This study aims to determine the effect of sulfur content, measured as a percentage of sulfur recovery, on the conversion of SO2 gas to SO3. Concentrate and calcine samples with particle size variations of 100, 120, 160 and 200 mesh were analyzed on a Carbon Sulfur Analyzer (CSA) with combustion temperature variations of 1100, 1150, 1200 and 1250˚C to determine sulfur content as a reference for the potential amount of SO2 to SO3 conversion in sulfuric acid formation. The results showed that the conversion of SO₂ gas to SO₃ increased with increasing particle size, with a particle size of 200 mesh yielding an optimum sulfur gas conversion percentage of 4.12%. At the same conditions, a maximum sulfur recovery rate of 96.66% was obtained from an average particle size of 200 mesh.
Bioplastics from Avocado Seed Starch : Effects of Chitosan and PVA on Mechanical Properties, Water Resistance, and Biodegradability Wahyudi, Mohamad Nur; Hartanti, Adelia; Sari, Dessy Agustina; Hakim, Muhammad Fahmi; Aeni, Alfieta Rohmaful
Journal of Chemical Process Engineering Vol. 10 No. 1 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1641

Abstract

A sustainable alternative to traditional petroleum-based plastics, bioplastics produced from avocado seed starch can help alleviate some of the environmental challenges presented by plastic waste. However, these products still need to improve their mechanical properties and water resistance for industrial use. The purpose of this study is to find out how changes in the amounts of chitosan and polyvinyl alcohol (PVA) affect the mechanical strength, water resistance, and biodegradability of bioplastics made from avocado seed starch. The solution-casting method prepared starch-based bioplastics using chitosan (2.5–4.5 g), PVA (2.5–5%) as filler, and glycerol as a plasticizer. This study found that adding more chitosan increased the tensile strength, reaching a maximum value of 30.696±0.106 N/mm2 in the SNI 7188.7:2016, which was higher than the tensile strength value of the N3 sample. The samples N1 and M1 demonstrated the highest elongation at break of 35.700±4.776% and the lowest water uptake of 5.167%, indicating a 94.833% water resistance. The plastics underwent complete biodegradation under soil conditions after 60 days. This led to valuable results, confirming that avocado seed starch-based bioplastics, as engineering materials for food packaging, have enormous potential for application in the industry. This research needs to increase the water resistance or scale it up for industrial production
The Effect of Temperature and Storage Time on the Quality of Frozen Food Nuggets Lastri Wiyani; Gusnawati; Muhammad Fauzan; Nur Annisa
Journal of Chemical Process Engineering Vol. 10 No. 1 (2025): Journal of Chemical Process Engineering
Publisher : Fakultas Teknologi Industri - Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/jcpe.v10i1.1656

Abstract

This study aims to determine the effect of storage temperature on the quality of nuggets (frozen food) and the effect of storage time on their quality.The test results showed that the Total Plate Count at room temperature (28ºC-30ºC) on day 1 did not meet the standard. Similarly, at refrigerator temperature (10ºC), the values on days 12 and 16 did not meet the standard. Meanwhile, at freezer temperature (-16ºC), all samples met the standard of <105 cfu/g. For the Yeast and Mold test, the results did not meet the standard at room temperature (28ºC-30ºC) on day 1 and at refrigerator temperature (10ºC) on days 12 and 16. However, at freezer temperature, the nugget samples met the standard requirement of a maximum of 1 × 10⁴ cfu/g.The E. coli test results for all storage conditions (room temperature, refrigerator, and freezer) met the requirement of <3 cfu/g. For the Coliform test, the sample stored at room temperature on day 1 did not meet the requirement, whereas samples stored at refrigerator and freezer temperatures met the standard of 10 cfu/g. In the Proximate Analysis, nuggets stored at room temperature had a moisture content of 51.66%, protein content of 9.62%, and fat content of 10.05%. Meanwhile, those stored at freezer temperature had a moisture content of 61.48%, protein content of 10.23%, and fat content of 10.36%. However, some proximate components, such as moisture and fat content, increased during storage.

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