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All Journal Jurnal Sains dan Teknologi Reaksi Jurnal Vokasi Proceedings of International Conference on Multidiciplinary Research Jurnal Teknologi JURNAL REKAYASA KIMIA & LINGKUNGAN
Teuku Rihayat
Jurusan Teknik Kimia Politeknik Negeri Lhokseumawe
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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CHARACTERIZATION OF BIODEGRADABLE POLYURETHANE POLYMER BASED ON BENTONITE-CHITOSAN HYBRID PALM SA, Sabiila Yasara; Syafruddin, S; Rihayat, Teuku
Jurnal Sains dan Teknologi Reaksi Vol 21, No 02 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i02.4942

Abstract

Corrosion problems that often occur cause various damages and losses. The coating process has the advantage of being able to protect the metal surface from environmental influences that result in corrosion of the metal. The innovation of combining Polyurethane with Bentonite-Chitosan filler is able to make the polymer have better corrosion resistance. This study aims to see the effect of mixing between Polyurethane and Bentonite-Chitosan filler. The sample formulation used is polyurethane with variations of bentonite and chitosan 1%, 3%, 5%, 7%, 9%. The addition of Bentonite-chitosan filler affects the mechanical properties of the material. Characterization with the addition of Bentonite and Chitosan produces a polymer that has good thermal stability and good corrosion resistance. Test result Fourier Transform Infrared(FT-IR) there are functional groups NH, CH, C=O. Based on test resultsThermogravimetric Analysis(TGA) samplePolyurethane with modified bentonite 9%/chitosan 9% w/w has the best thermal stability among other samples where the sample starts to degrade (on set) at 419.22(oC) and stops degrading (end set ) at 521.94 (oC) with a weight loss of -31.156%. Polyurethane samples with 1% bentonite/chitosan 9% w/w modification had lower thermal stability where the sample started to degrade (onset) 312.21 (oC) and stopped degrading (end set) at 391.09 (oC) with a weight loss of -55.729 %. The results of the morphological test using the SEM tool show that the chitosan chains dispersed well into the bentonite interlayer. The corrosion test showed that the addition of bentonite and chitosan affected the corrosion rate, the greater the composition of bentonite and chitosan, the lower the corrosion rates. the best sample with a ratio of Polyurethane/Bentonite/Chitosan 9:9% w/w experienced the smallest corrosion rate of 5.08mpy and a mass loss of 0.1 gram.Keywords: Biodegradable, Corrosion, Polyurethane, Bentonite, Chitosan
DISTILLATION OF ESSENTIAL OILS FROM PATCHOULI LEAVES USING SOLAR ENERGY (PHOTOVOLTAIC) AS A HEATING SOURCE Prayogi, Muhammad Akbar; Rihayat, Teuku; Zaini, Halim
Jurnal Sains dan Teknologi Reaksi Vol 21, No 02 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i02.4815

Abstract

Currently, the use of the sun as renewable energy is very effective. Solar Cells or commonly called Photovoltaic systems are components used to absorb heat from sunlight which is converted into electrical energy. This photovoltaic technology is very well implemented in Indonesia because of the tropical climate and long exposure to sunlight. Of the many types of essential oils, one of the most prominent in Indonesia is patchouli oil. Currently, essential oil refining still uses energy sources that can be scarce at any time and are less environmentally friendly. In this research, we tried to design a distillation device using solar cells to produce electricity which will later be used as a heating source. The highest yield obtained was 2.60% at a drying time of 32 hours and a distillation time of 420 minutes and the lowest yield obtained was 0.94% at a drying time of 0 hours and a distillation time of 300 minutes. From the results of analysis using GC-MS, it shows that the chemical compounds identified include 4,7-Methanoazulene, Seychellene, and several other compounds. Based on the GC-MS results, patchouli alcohol was 37.18% and 4,7-Methanoazulene was 2.78%. According to International Market Standards, the patcholi alcohol content must be higher than 30%, therefore this material meets the Indonesian National Standard (SNI).Keywords : Solar Cell, Patchouli Oil, Distillation Equipment, Indonesian National Standard
DEVELOPMENT OF CHITOSAN MODIFIED POLYURETHANE COMPOSITE AS A BASE MATERIAL FOR ANTIBACTERIAL COATING PAINT Wahyuni, Sri; Rihayat, Teuku; Syafruddin, S
Jurnal Sains dan Teknologi Reaksi Vol 21, No 02 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i02.5255

Abstract

ABSTRACTPolyurethanes are generally made from petroleum-based polyols, but the current state of petroleum is depleting. The availability of petroleum, which is currently decreasing, encourages other parties to look for new alternatives. One alternative that can be used is palm oil. Technological developments that continue to increase are now also a reference for the development of antibacterial polyurethane coating paints which are carried out by adding another filler, namely chitosan. This study aims to determine the effect of variations in the weight of chitosan as an antibacterial agent and to determine the effect of the ratio of polyol and TDI on the quality of the paint analyzed through functional group analysis with Fourier Transform Infra Red (FTIR), morphological analysis of Surface Scanning Electron Microscopy (SEM), Heat resistance test with Thermo Gravimetry Analyzer (TGA), and Bacterial activity test. The analysis process was carried out with variations in the weight of chitosan (0; 2; 3; 4; 5; 6) % w/w and variations in the ratio of polyol and TDI (50:50) %; (40:60)%; (45:55)%. The test results showed that the best polyurethane paint was the variation in the ratio of polyol and TDI 50:50% with 6%w/w chitosan filling. This is because the more chitosan added, the better it will be in inhibiting bacterial activity, and the more polyols, the better the paint quality. The test results showed that the best polyurethane paint was the variation in the ratio of polyol and TDI 50:50% with 6%w/w chitosan filling. This is because the more chitosan added, the better it will be in inhibiting bacterial activity, and the more polyols, the better the paint quality. The test results showed that the best polyurethane paint was the variation in the ratio of polyol and TDI 50:50% with 6%w/w chitosan filling. This is because the more chitosan added, the better it will be in inhibiting bacterial activity, and the more polyols, the better the paint quality.Keywords: Chitosan, Composites, Polyols, Polyurethanes, TDI
DISTILLATION OF ESSENTIAL OILS FROM THE LEAVES AND STEMS OF CITRONELLA (Cymbopogon Winterianus) USING A SOLAR ENERGY-BASED VAPOR DISTILLATION APPARATUS WITH PHOTOVOLTAIC METHOD Hafidh, Muhammad; Rihayat, Teuku; Elwina, E
Jurnal Sains dan Teknologi Reaksi Vol 21, No 02 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i02.4816

Abstract

The photovoltaic method with solar panel modules with a capacity of 100 Wp can absorb heat and convert it into electrical energy up to 100 watts / hour and is used for the citronella oil refining process which requires 57,550 Kj of energy.  By using 4 solar cell panels, within 4 hours the power generated is able to meet these energy needs. Based on the test results of the design of the distillation device using solar cells, the efficiency of energy absorption cannot be absorbed up to 100%, due to the occurrence of lost energy but this can be overcome with a longer absorption time. In testing citronella oil with variations in drying time and distillation time, it was found that the optimum time to produce the highest percentage of citronella oil yield was at a drying time of 18 hours with a distillation time of 6 hours, namely 1.20%. From the laboratory tests produced, citronella oil with variations in drying time and operating time has a density value ranging from 0.8751gr/ml to 0.8831gr/ml and the best GC-MS test results obtained the amount of citronellol in the sample as much as 15.73% and the amount of geraniol as much as 28.57% has met the Indonesian National Standard (SNI) 2385-2006.Keywords: Solar Cell, Photovoltaic, Citronella Oil, Solar Panel
THE EFFECT OF TEA DWAGES AND EM4 IN MANUFACTURING FERTILIZER FOR THE GROWTH OF CAYYEY CHILLI Jefri, Muhammad; Rihayat, Teuku; Fachraniah, F
Jurnal Sains dan Teknologi Reaksi Vol 21, No 02 (2023): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v21i02.4817

Abstract

Good quality organic fertilizer is useful for improving and maintaining soil fertility. In its application, this organic fertilizer is generally given through the soil but can also be given through the leaves. This research aims to determine the effect of tea dregs and the effect of the amount of EM4 on the growth of cayenne pepper, the results of stem height growth in cayenne pepper plants (Capsicum frutetences. L) by administration of EM4 and Tea Dregs with doses of 5;10;15;20;25 ml and Tea Dregs 50;100;150;200;250 and 250 grams have different characteristics, based on the statistical data it states the differences in dosages of the variables. 2, namely 10 ml/ 250 grams of tea dregs, dominates the growth of stem height in cayenne pepper plants.Keywords: Brown Sugar, Husk Charcoal,Cow Dung,The Dregs, EM4, Yellow Soil.
Perancangan dan Aplikasi Distilasi Minyak Serai Wangi Menggunakan Photovoltaic dengan System Tenaga Hybrid Mutia, Ulfa; Rihayat, Teuku; Syafruddin, Syafruddin
Jurnal Teknologi Vol 24, No 2 (2024): Oktober 2024
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/teknologi.v24i2.5639

Abstract

UUtilization of sunlight is currently very effective as a renewable energy. Photovoltaic systems are modules that are used to absorb heat exposed to sunlight which is converted into electrical energy. The amount of potential sunlight that can be absorbed depends on the size of the cell and the absorption capacity of solar cells against sunlight. This study uses 4 solar panels to produce heat which is used for the essential oil production process. The total power that can be generated within 6 hours is 8664 kJ. Based on the test results of the distillation tool design using solar cells, energy absorption efficiency is not 100% absorbed due to lost energy and the number of solar panels used has not reached the power requirement, but to overcome this, during the study a hybrid power system was also used, where power is also supplied from the mains National Electric Company (PLN). Test results on citronella oil (Chimbopogan Nardus L) are close to SNI standards. The optimum drying time to produce the highest % yield is 1 day of drying time with 6 hours of distillation time. The results of citronella produced met Indonesian quality standards, where the density test value was 0.8869, and Gas Chromatography-Mass Spectrometry (GC-MS), namely citronella content of 15.75% at a retention time of 15.875 minutes. Geraniol content in essential oil was obtained at 28.70% retention time of 18.050 minutes which are within the range of the Indonesian National Standard (SNI) 2385-2006.
PENGARUH SIFAT MATERIAL DAN TERMAL KOMPOSIT PLA (POLY LACTID ACID)/COCONUT FIBER (SABUT KELAPA) DENGAN MODIFIKSI PERENDAMAN NaOH Ridwan, Ridwan; Rihayat, Teuku; Ilmi, Awanis; Aidy, Nurhanifa
Jurnal Sains dan Teknologi Reaksi Vol 20, No 02 (2022): Jurnal Sains dan Teknologi Reaksi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v20i02.3390

Abstract

ABSTRAKPLA (Poly Lactid Acid) dengan penambahan serat sabut kelapa (Coir) sebagai pengisi dengan memvariasikan fraksi volume polimer: pengisi yaitu 80% : 20% (XcN1, XcN2) , 70% : 30% (XcN3, XcN4), 60% : 40% (XcN5, XcN6) dan 50% : 50% (XcN7, XcN8). Serat sabut kelapa yang digunakan sebagai bahan pengisi terlebih dahulu dimodifikasi menggunakan NaOH dengan variasi konsentrasi 30% dan 40%. Komposit PLA-sabut dibentuk dengan pencampuran melalui metode peleburan dengan ekstruder dan hot press. Berdasarkan hasil uji termal pada TGA pada sampel XcN8 di dapat kekuatan termal yang baik yaitu 399,17oC, menunjukkan peningkatan suhu degradasi termal pada komposit dengan meningkatnya konsentrasi NaOH. Nilai kuat tarik maksimum terdapat pada komposit PLA-Coir dengan variasi konsentrasi NaOH 40%, fraksi volume 50% : 50% dan waktu tahan selama 25 menit dengan nilai 22,63 MPa. Dari hasil pengujian lentur, kuat lentur komposit juga meningkat dengan bertambahnya konsentrasi NaOH dan jumlah filler yang digunakan. Hasil analisis (FT-IR) terhadap pada sampel XcN8 dapat dilihat bahwa terdapat gugus fungsi –OH. Hal ini dapat dilihat pita serapan 3192,33 cm-1 yang merupakan gugus –OH dari lignin. Kemudian dari pengujian SEM sampel dengan perendaman NaOH 40% memberikan  kemampuan homogenitas antara serat dan polimer pada pembuatan komposit memiliki seratnya cukup baik. Kata kunci : Polylactid Acid, Pengisi, Sabut, Komposit, NaOH
Utilization of Polyurethane with Bentonite-Chitosan Filler As an Anti-Corrosion Paint Izzati, Isra Adelya; Rihayat, Teuku; Putra, Alfian
Jurnal Sains dan Teknologi Reaksi Vol 22, No 02 (2024): JURNAL SAINS DAN TEKNOLOGI REAKSI
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v22i02.6148

Abstract

ABSTRACTIn this study, the manufacture of polyurethane uses bentonite-chitosan filler materials to improve the ability of heat resistance. The characteristics carried out were assessed in terms of functional group analysis, heat resistance analysis, morphological structure analysis, corrosion test and paint thickness test. The coating process has the advantage of being able to protect the iron surface from environmental influences that result in corrosion of the metal. This study aims to see the effect of mixing polyurethane with Bentonite-Chitosan filler. The sample formulation used was polyurethane with variations of bentonite and chitosan of 2%, 4%, 6%, 8%. The results of the Fourier Transform Infra Red (FT-IR) test showed that there were functional groups N-H, C-H, C=O. Based on the results of the Thermogravimetry Analysis (TGA) test, the Polyurethane sample with 8% bentonite modification : chitosan 8% b/b had the best thermal stability among other samples where the sample began to degrade (on set) at a temperature of 307.04 (oC) and stopped degrading (end set) at a temperature of 399.50 (oC). In the Polyurethane sample with 2% bentonite modification/8% chitosan b/b had lower thermal stability where the sample began to degrade (onset) 293.09(oC) and stopped degrading (end set) at 348.32(oC). The results of the morphological test using SEM tools showed that the chitosan chain was well dispersed into the bentonite interlayer. The corrosion test showed that the addition of bentonite and chitosan affected the corrosion rate, the greater the composition of bentonite and chitosan, which could reduce the corrosion rate. The best sample with a ratio of Polyurethane/Bentonite/Chitosan 8:8 % b/b experienced the smallest corrosion rate of 5.79 mpy and mass loss of 0.10 grams.Keywords : Biodegradable, Corrosion, Polyurethane, Bentonite, Chitosan
PURIFIKASI MINYAK NILAM HASIL DISTILASI INDUSTRI LOKAL DI DESA MEUNASAH MEE KECAMATAN MUARA DUA KOTA LHOKSEUMAWE Adriana, Adriana; Zulkifli, Zulkifli; Yunus, Muhammad; Pardi, Pardi; Rihayat, Teuku; Amalia, Zuhra; Zaini, Halim; Irwan, Irwan
Jurnal Vokasi Vol 7, No 2 (2023): Juli
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/vokasi.v7i2.4129

Abstract

Minyak nilam merupakan salah satu minyak yang paling populer di industri minyak aromatic. Nilai ekonomis minyak nilam sangat ditentukan oleh kualitas dan konsentrasi komponen utama dalam minyak. Usaha penyulingan minyak nilam di daerah Lhokseumawe masih dilakukan menggunakan alat tradisional, sehingga kualitas minyak yang dihasilkan tidak memenuhi standar mutu yang ditetapkan. Kualitas minyak nilam ditentukan oleh karakteristik alami masing-masing minyak dan komponen asing yang tercampur di dalamnya. Adanya komponen asing tersebut tentunya akan menurunkan kualitas minyak nilam yang dihasilkan. Proses purifikasi secara kimia atau fisika sangat dibutuhkan untuk meningkatkan mutu dan nilai jual minyak nilam. Proses purifikasi yang dilakukan adalah untuk pemurnian minyak nilam hasil produksi industri lokal. Proses pemurnian ini bisa menghasilkan minyak yang lebih cerah dan karakteriknya memenuhi persyaratan mutu standar. Artikel ini merupakan hasil uji laboratorium terhadap minyak nilam produksi lokal Desa Meunasah Mee Kecamatan Muara Dua Kota Lhokseumawe
Sintesa dan Karakteristik Sifat Mekanik Karet Nanokomposit Alam, Pocut Nurul; Rihayat, Teuku
Jurnal Rekayasa Kimia & Lingkungan Vol 6, No 1 (2007): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Peningkatan sifat mekanik karet alam dengan penambahan tanah liat nanokomposit pada kosentrasi berbeda yaitu 1, 3 dan 5 % berat sudah berhasil diteliti. Pada percobaan ini pengujian dilakukan dengan X-Ray Difraction (X-RD) untuk analisa morphologi dan Instron untuk analisa uji tarik. Penambahan tanah liat nanokomposit kedalam matrik polimer adalah untuk meningkatkan sifat mekanik dari material asli dan juga untuk menghasilkan suatu produk polimer yang lebih murah. Hasil yang diperoleh adalah terjadinya peningkatan yang drastis terhadap basal spacing dari matrik polimer dan menunjukkan intercalasi diantara polimer dengan pengisinya. Uji tarik juga menununjukkan peningkatan yang sangat signifikan yaitu 14.983 MPa pada karet alam menjadi 40.178 MPa pada karet alam-tanah liat nanokomposit 5% berat.Kata kunci: karet alam, sifat mekanik, tanah liat nanokomposit
Co-Authors Adriana Adriana Alfian Putra Amalia, Zuhra E. Elwina Elwina, E Fachraniah, F Hafidh, Muhammad Halim Zaini, Halim Helvina, Puteri Heni Pujiastuti Hj. Mohd. Dahlan, Hj. Mohd. Dahlan Hj. Mohd. Dahlan, Khairul Zaman B. Ilmi, Awanis Imaruzi, Nashru Irwan Irwan Izzati, Isra Adelya Mahmood, Mohd Hilmi B Mahmood, Mohd Hilmi B Muhammad Jefri Muhammad Yunus Mustafa, Noor Mustapa, Saari B Mustapha, Saari Mustapha, Saari B. Nurhanifa Nurhanifa Pardi Pardi, Pardi Pocut Nurul Alam Prayogi, Muhammad Akbar Rashid, Suraya Abdul Rashid, Suraya Abdul Ridwan, Ridwan Rusna, Rusna SA, Sabiila Yasara Sami, Muhammad Sri Wahyuni Syafruddin Syafruddin Syafruddin, S Tezara, C Ulfa Mutia, Ulfa Wan Yunus, Wan MD Zin Yunus, Wan MD Zin Wan Zaman B, Khairul Zulkifli Zulkifli