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Jurnal Sains dan Teknologi Reaksi
Published by Politeknik Negeri Lhokseumawe
ISSN : 1693248X     EISSN : 25491202     DOI : http://dx.doi.org/10.30811/jstr
Core Subject : Science, Education, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Education Engineering Materials Science & Nanotechnology
Jurnal Sains dan Teknologi Reaksi atau boleh disingkat dengan nama JSTR, berfokus pada banyak Aspek Teknik Kimia, seperti: Teknik Reaksi Kimia, Teknik Kimia Lingkungan, Energi Fosil dan Terbarukan, serta Sintesis dan Pengolahan Material.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 11 Documents
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Search results for , issue "Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI" : 11 Documents clear
Perancangan dan Realisasi Sistem Pengering dengan Penambahan Blower Abdul Haris Salam; Teuku Rihayat; Awanis Ilmi; Rika Annisa
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4057

Abstract

Teknologi Drying Blower Oven dengan menguji syarat layak guna dilihat dengan pengujian yaitu seperti uji kandungan zat gizi, uji kadar abu, uji kadar air, uji organoleptik hingga uji untuk pemasaran. Pengujian alat Drying Blower Oven dilakukan dengan menguji bahan baku produk seperti cabai merah. Pengeringan menggunakan Drying Blower Oven pada suhu 32,2˚C sampai 54,2˚C dengan kecepatan angin 12 m/detik sampai kadar air di bawah 8% - 10%.  Penelitian ini bertujuan untuk menentukan karakteristik pengeringan cabai merah dengan Type Multioven Cabinet perubahan suhu, kelembaban relatif, penurunan berat bahan, laju aliran udara, laju aliran volume udara, kadar air bahan terhadap waktu, laju pengeringan terhadap waktu, dan laju pengeringan terhadap kadar air. Penelitian ini menggunakan metode deskriptif proses pengeringan dipakai suhu di bawah 65˚C diulang sebanyak 3 (tiga)  kali sampai mencapai kadar air 8 – 10 %bk. Hasil pengamatan menunjukan selama proses pengeringan tercatat Rh luar alat pengering antara 83,28%-89,50%. Juga Rh di dalam alat pengering diamati dan dicatat berkisar antara 86,58%-97,91%. Kadar cabai merah selama proses pengeringan mengalami penurunan dari 38,75% turun hingga rata – rata 18,05% dengan perincian pada ruang satu dan dua mencapai 17,4%, ruang tiga dan empat 16,95% dan ruang lima dan enam 16,6%. Dengan waktu pengamatan selama 4 jam.Keywords: Drying Blower Oven, Teknologi, Bumbu Instan
Utilization Of Banana Kepok As Active Charcoal For The Process Of Purification Of Used Cooking Oil Using The Adsorption Method S Sariadi; Z Zulkifli; A Adriana; M Yunus; R Ridwan; S Salmyah; Een Setiawati; Isra Adelya Izzati
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4195

Abstract

Used cooking oil or often referred to as used cooking oil is one of the needs for food processing for humans. Repeated processing of cooking oil in the frying process can reduce the quality of the cooking oil. Therefore, one of the efforts to process used cooking oil is adsorption using activated charcoal from kepok banana peels. The use of activated charcoal as an adsorbent can be beneficial because activated carbon can absorb some unwanted odors and reduce the amount of free fatty acids, thereby improving the quality of the oil. The purpose of this study was to study the addition of the amount of kepok banana skin size of activated charcoal (mesh) with adsorption time on the quality of used cooking oil. The variables used were varying the size of the activated carbon particles of 100 mesh, 120 mesh, 140 mesh and 160 mesh with adsorption times of 3 hours, 5 hours and 7 hours. The refined oil will be analyzed for oil density, fatty acid content in the oil, and water content. From the research results it is known that the best particle size is 160 mesh. The density value is 0.889 g/ml. The results obtained are that the density value still does not meet the SNI (2002) cooking oil quality standard requirements, namely 0.900 g/ml. FTIR analysis shows that there is an increase in wave number which is the peak of the OH (hydrogen bond) structure using purified chorcoal. The C=O (carboxylate) FFA molecule is shown around the wave number 1060 cm-1 increasing to 1070 cm-1. Keywords: Adsorption, activated charcoal, kepok banana, free fatty acid (FFA), water content, density
DESIGN AND REALIZATION OF A DRYER SYSTEM WITH THE ADDITION OF A BLOWER Abdul Haris Salam; Teuku Rihayat; S Sariadi; Awanis Ilmi; Rika Annisa; L Lianti; R Rusydi
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4265

Abstract

Drying Blower Oven technology by testing the feasibility to be seen with tests such as nutrient content test, ash content test, water content test, organoleptic test to marketing test. Testing of the Drying Blower Oven is carried out by testing the raw material of the product, such as red chili. Drying using Drying Blower Oven at a temperature of 32.2ËšC to 54.2ËšC with a wind speed of 12 m/s until the water content is below 8% - 10%. This study aims to determine the drying characteristics of red chili with Multioven Cabinet Type changes in temperature, relative humidity, material weight loss, air flow rate, air volume rate, material moisture content against time, drying rate against time, and drying rate against moisture content. This study uses a descriptive method of drying temperature used below 65ËšC repeated 3 (three) times until it reaches a moisture content of 8-10 %wk. The results of the observations showed that the drying process recorded Rh outside the drying apparatus between 83.28%-89.50%. Also the Rh in the Drying apparatus was observed and was observed to be between 86.58%-97.91%. The red chili content during the drying process decreased from 38.75% down to an average of 18.05% with details in rooms one and two reaching 17.4%, rooms three and four 16.95% and spaces five and six 16, 6%. With an observation time of 4 hours.Keywords: Drying Blower Oven, Technology, Instant Seasoning
REFINERY OF CITRONELLA OIL USING VACUUM HYDRODISTILATION METHOD IN ACEH UTARA DISTRICT S Syafruddin; Reza Fauzan; Zulfan Khairil Simbolon; Rizal Syahyadi; Atiqah Aida; Rima Dhinta Dewi Astuti; Isra Adelya Izzati; Pocut Nurul Alam
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4146

Abstract

Citronella oil is a non-timber forest product (NTFP) and is commercially obtained from the distillation of citronella leaves (Cymbopogon nardus L). Fragrant citronella leaves are one of the raw materials for obtaining vegetable oils in the form of essential oils. Essential oil is the main component consisting of composition in the form of geraniol and citronellal. The process of extracting essential oils can be done using various methods, one of which is the Vacuum Hydrodistillation method. The Vacuum Hydrodistillation method is carried out using a vacuum pump as a pressure guard and the boiling point of the distillation process does not exceed the boiling point temperature of water, which is 1000 C, so that the oil produced is maintained its purity. The vacuum hydrodistillation process of citronella was carried out for 3, 5, and 7 hours with each treatment using random and whole pieces of raw material. The resulting essential oil products were analyzed in the form of yield, density, refractive index and oil composition analysis using GC-MS. The best essential oil yields from citronella were obtained under operating conditions with random samples and distillation time of 5 hours. Where the yield produced is 0.17% with a refractive index of 1.41570 and a density of 0.92735 gr/ml. Keywords: Essential Oil, Vacuum Hydrodistillation, Fragrant Lemongrass, Geraniol
PROCESS OF PURIFICATION OF WASTE COOKING OIL USING MONITORING (MORINDA CITRIFOLIA) AND KAOLIN AS ADSORBENT Alfian Putra; S Sariadi; Reza Fauzan; Yaumil Akmalia H; T Taufik
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4198

Abstract

The use of cooking oil repeatedly at high temperatures will cause the quality and nutritional value of fried foods to decrease, which can have a negative impact on consumer health. Repeated use will increase the levels of free fatty acids (ALB) in cooking oil so that it will have a negative impact on the health of people who consume it or use it as a heating medium (frying). The adsorption process is carried out by contacting used cooking oil and adsorbent in the composition Because of this, the idea arose to use noni as an adsorbent for refining used cooking oil by means of adsorption using a mixture of noni (M) and kaolin (K) by varying the composition and contact time. The function of this adsorbent is generally to absorb impurities, odors and chemical substances that are toxic in used cooking oil. Ascorbic acid contained in noni fruit also functions as an anti-oxidant, namely a substance that is able to neutralize the peroxide groups contained in used cooking oil. The function of this adsorbent is generally to absorb impurities, odors and chemical substances that are toxic in used cooking oil. Ascorbic acid contained in noni fruit also functions as an anti-oxidant, namely a substance that is able to neutralize the peroxide groups contained in used cooking oil. The adsorption process is carried out by contacting used cooking oil and adsorbent in the composition Ascorbic acid contained in noni fruit also functions as an anti-oxidant, namely a substance that is able to neutralize the peroxide groups contained in used cooking oil. The adsorption process is carried out by contacting used cooking oil and adsorbent in the composition (100:0 ; 75:25 ; 50:50 ; 25:75 ; 0:100) for 30, 60, 90 and 120 minutes respectively with activated and unactivated kaolin as the control variable. The oil after adsorption was then observed for changes in acid number, peroxide value, moisture content, impurities content and color intensity. In several studies, the quality of oil recovered from used cooking oil showed a slightly blackish color, making the oil look less attractive. The use of kaolin as a bleaching earth in refining used cooking oil is due to the high SiO2 content in kaolin, which is expected to improve the color of used cooking oil, especially to improve the color of the recovered oil, so that it approaches the quality of standard cooking oil used in the market.Keywords: adsorbent; free fatty acids; noni; used cooking oil; kaolin
INFLUENCE OF THE ADDITION OF PARAFFIN AND GRAPHITE ON ETHYLENE PROPHYLENE DIENE MONOMER (EPDM) FOR THERMAL ENERGY STORAGE Pocut Nurul Alam; Isra Adelya Izzati; Rima Dhinta Dewi Astuti; Umi Qhanita Putri Swya; Teuku Muhammad Daffa Rihayat
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4169

Abstract

This study aims to determine the effect of the paraffin: graphite ratio on the thermal resistance of the Phase Change Material (PCM). PCM mixed with Ethylene Propylene Diene Monomer (EPDM) which has good compatibility with paraffins as a base polymer for preparing paraffin graphite composites. The samples was prepared by using heating method at 180oC for 20 minutes with a variation of the ratio 9:1 and 8:2 with mass ratios PCM70 : EPDM30, PCM80 : EPDM20, and PCM90 : EPDM10. Based on the results of tensile strength testing, thermal stability analysis and SEM. the maximum tensile strength is obtained at a mass ratio of 80% : 20% with a ratio of 9:1 which is 9.34 Mpa, has a thermal stability of 307.04oC at onset and Endset at a temperature of 399.50oC, However, there is an aggregate form that is agglomerate and has large pores, as well as a rough surface on the sample. While the results of the Morphology test using SEM, the best interaction between polymers with a mass ratio of 70%:30% at a ratio of 9:1, with a very well mixed surface, smooth, no lumps formed. Keywords: EPDM; Graphite;Paraffin;PCM;Polymers 
MODELING OF PHOTOVOLTAIC PANELS FOR GAHARU ESSENTIAL OIL DISTILLATION SYSTEM T Taufik; S Subhan; Arief Mardiyanto; A Azhar; Muhammad Kamal; Atiqah Aida
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4201

Abstract

Solar energy has now been converted into electrical energy by using alternative solar panels to absorb heat energy which is converted into electrical energy. Solar panels or often referred to as photovoltaic systems are an alternative that is being actively developed to deal with the global status of energy shortages because fossil energy sources, which have been the main energy source, will run out as population growth increases. In this study used a solar cell with a capacity of 100 Wp which required 27 units of solar cells. used solar. The absorption power of the solar cell energy used is 2,500 watts with varying operating times, namely 1.5 hours, 3 hours, 4.5 hours and 6 hours. The use of solar cell energy will later be used for agarwood oil distillation. Gaharu wood is pre-treated in the form of drying and soaking before the distillation process is carried out. Pretreatment is carried out with the aim that the resulting essential oil can increase in yield. The results obtained yield showed the best quality at the 20th day immersion time and 10 hours of distillation time (0.51%). The results of the GC-Ms gas chromatogram analysis were indicated by the presence of guaiol, selinene and panasinsen compounds, namely (55.90%), (19.56%) and (5.53%). Keywords: solar cell, renewable energy, agarwood, distillation
The Effect Of Concentration Ratio Of Sugarcane Bagasse And Starch Fiber On The Characteristics Of Natural Styrofoam For Environmentally Friendly Food Packaging Raw Materials Reza Fauzan; H Harunsyah; M Yunus; Halim Zaini; S Syafruddin
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4188

Abstract

Styrofoam is one type of food packaging that we often find. Styrofoam has excellent heat and cold resistance so it is used as an insulator. The ability to withstand good temperatures, lightweight and practical encourages the use of styrofoam as a food and beverage packaging material. However, Styrofoam contains many harmful substances and is not environmentally friendly. One solution is to replace the material for making styrofoam which is environmentally friendly called biodegradable foam. Sugarcane bagasse fiber has the potential as a basic material for making biodegradable foam. The purpose of this experiment is to determine the effect of the addition of bagasse fiber on the characteristics of biodegradable foam. This experiment uses a complete randomized design method with sugarcane bagasse fiber concentration treatment. The characteristic tests carried out include tensile strength test, water absorption test, biodegradation test, and thermogravimetric analysis. From the results of bagasse fiber decomposed 9,130 mg and still remaining 1,13 mg. The optimum concentration of biodegradable foam bagasse fiber on water absorption, biodegradation rate, and tensile strength in the 90:10 composition sample. The results of functional group analysis showed O-H and C-O groups which indicated that biodegradable foam is easily degraded by microorganisms in the soil. Keywords: Biodegradable foam, bagasse, cassava starch, packaging. 
INCREASING THE MECHANICAL PROPERTIES OF BIODEGRADABLE PLASTIC BASED ON POLY LACTIC ACID (PLA) WITH THE ADDITION OF COCONUT COIL (COIR) AND CHITOSAN Dewi Silvia; R Ridwan
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4231

Abstract

Petroleum-based plastics that are difficult to decompose have been used for years to become the biggest environmental polluter.The solution is to replace conventional plastics such as bioplastics with the same quality as conventional plastics so that they can replace the existence of petroleum-based plastics.The innovation of combining natural polymers (poly lactic acid) with coir-chitosan fillers is able to make polymers have good mechanical properties. This study aims to see the effect of mixing the natural polymer poly lactic acid (PLA) with coir (coconut coir) and chitosan fillers. With variations in fiber mass fraction3.8 grams; 3.9 grams; 4 grams; 4.1 grams; 4.2 grand mass variation of chitosan 0.36 gr; 0.38 gr; 0.4 gr; 0.42 gr; 0.44 gr. The addition of coir and chitosan fillers affects the mechanical properties and thermal properties of the material.The synthesized composites were tested for their mechanical strength to determine material characteristics and morphological observations. In the tensile test, the highest tensile strength value was produced by a material with a mass fraction of coir 19% (w/w) and 1.8% (w/w) chitosan, which was 44.23 MPa and the lowest tensile strength value was produced by a material with a mass fraction coir 21% (w/w) and chitosan 2.2% (w/w) of 31.48 MPa. Based on test results Differential Thermal Analysis sample with coir modification 20% (w/w) chitosan 2% (w/w) has the best thermal stability among other samples where the sample begins to degrade (on set) at 461.77 (oC) and stops experiencing degradation (end set ) at a temperature of 531.48 (oC). The results of the morphological test using the SEM tool show that the surface structure of the PLA79.2% sample is more homogeneous due to coir (coconut coir) and chitosan chains are well dispersed into the poly lacti acid (PLA) interlayer. Keywords : Bioplastics, Coir, Chitosan, Biodegradation, Natural Polymers. 
DEVELOPMENT OF POLYURETHANE/CLAY NANOCOMPOSITES BASED ON PALM OIL POLYOL Ummi Habibah; A Adriana; S Sariadi; M Muhammad; Halim Zaini; Sabila Yasara SA; F Fachraniah
Jurnal Sains dan Teknologi Reaksi Vol 21, No 01 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i01.4189

Abstract

Polyurethanes (PURs) are highly adaptable polymeric substances with a variety of physical and chemical attributes. High abrasion resistance, tear strength, shock absorption, flexibility, and elasticity are just a few of the desirable qualities of PURs. Despite their generally low thermal stability, this can be enhanced by utilizing clay that has been treated. From renewable resources, polyurethane/clay nanocomposites have been created. By combining oleic acid from palm oil with glycerol, a polyol for the manufacture of polyurethane by reaction with an isocyanate was created. As a catalyst and emulsifier, dodecylbenzene sulfonic acid (DBSA) was employed. Octadodecylamine (ODA-mont) and cetyltrimethyl ammonium bromide (CTAB-mont) were used to treat the unaltered clay (kunipia-F).  The d-spacing in CTAB-mont and ODA-mont were bigger than that of the pure-mont (1.142 nm) at 1.571 nm and 1.798 nm, respectively. A pre-polymer technique was used to create polyurethane/clay nanocomposites, and the micro-domain structures of segmented PU, CTAB-mont-PU 1, 3, and 5 wt%, and ODA-mont-PU 1, 3, and 5 wt% were determined by FTIR spectra. X-ray diffraction (X-RD) was used to evaluate the nanocomposites' morphology, and the results revealed that all of the intercalated type's nanocomposites were created as a result of this effort. When the surfaces of the materials were examined using transmission electron microscopy (TEM) observation and scanning electron microscopy (SEM), these were further confirmed. Thermogravimetric analysis (TGA) was used to examine thermal stability.Pure PU begins to degrade around 200°C, which is lower than the degrading rates of CTAB-mont PU and ODA-mont PU, which occur at roughly 318°C and 330°C, respectively. Both pure polyurethane (PU) and PU/clay nanocomposites have their mechanical properties, including dynamic mechanical properties, tested. With only a 5 weight percent addition of the montmorillonite CTAB-mont PU or ODA-mont PU, respectively, the tensile strength of the nanocomposites increased by more than 214% and 267%, respectively, demonstrating the impressively positive impact of the modified organoclay on the strength and elongation at break of the nanocomposites.Keywords: Clay,Palm Oil, Polyurethane

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