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Journal of Aceh Physics Society
Published by Universitas Syiah Kuala
ISSN : -     EISSN : 23558229     DOI : -
Core Subject : Science,
Physics
Focus of Journal of Aceh Physics Society (JAcPS) provides a forum for original paper works that enhances understanding of physics and their application. Scope of Journal of Aceh Physics Society (JAcPS) paper related to the development of new experimental methods, visualization techniques, material physics, optic, laser and instrumentation in physics is an important part of this journal. Experience gained and lessons learned in building test facilities and in measuring and reducing test data are important aspect of any experimental work. Authors are encouraged to report this experience and to summarize the original data. Archival review paper, short communication, invited papers, discussion of previously published papers, and book reviews are regular feature of the journal, in addition to full-length article.
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Articles 6 Documents
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Search results for , issue "Volume 10, Number 3, July 2021" : 6 Documents clear
Analysis of the size and composition of natural sand particles in the Rokan River Riau Province as a function of ball milling time Salomo Sinuraya; Erwin Amiruddin; Linda Wahyuni; Nita Jesika
Journal of Aceh Physics Society Volume 10, Number 3, July 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i3.18658

Abstract

Abstrak. Pasir alam merupakan bahan alam yang berada ditepi pantai, sungai, maupun perbukitan. Pasir alam merupakan batuan sedimentasi yang mengandung berbagai unsur partikel magnetik dan partikel non-magnetik. Penelitian pasir alam sungai dilakukan dengan metode ball milling guna menghaluskan ukuran partikel. Sifat magnetik yang diuji dalam penelitian ini adalah nilai suseptibilitas magnetik, variasi ukuran dan komposisi partikel ditentukan terhadap sampel pasir alam sungai Rokan dan konsentrat hasil ball milling 60 jam dan 100 jam. Nilai suseptibilitas magnetik yang didapatkan berkisar (968,245-19471,568) ´10-5. Hasil pengujian Scanning Electron Microscope menunjukkan bahwa ukuran partikel yang disintesis oleh ball milling selama 60 jam dan 100 jam diperoleh masing-masing sebesar 107 nm dan 96 nm. Hasil identifikasi X-Ray Fluorescence menunjukkan bahwa komposisi Fe meningkat dari 1,669 menjadi 35,187%, sedangkan komposisi Si mengalami penurunan dari 84,391 menjadi 41,079% setelah di ball milling selama 100 jam. Abstract. Natural sand is a natural material that is on the edge of a beach, river or hills. Natural sand is a sedimentation rock containing various elements of magnetic particles and non-magnetic particles. Research of natural sand of the river is carried out by ball milling method to smooth particle size. The magnetic properties tested in the study were the magnetic susceptibility, size and composition of natural samples of Rokan river sand and concentrate 2 milled for 60 h and 100 h using ball milling were determined natural Magnetic susceptibility values are in the range of (968.245-19471.568)´10-5. Scanning Electron Microscope result showed that the size of magnetic particle synthesized by ball milling for 60 h and 100 h are 107 nm and 96 nm, respectively. X-Ray Fluorescence identification results showed that the composition of Fe increased from 1.669 to 35.187%, while the composition of Si decreased from 84.391 to 41.079% after being ball milling for 100 h.Keywords: Natural sand of Rokan river, ball milling, magnetic susceptibility, SEM, XRF 
The production of supercapacitor carbon electrodes based on sugar palm fronds using chemical and physical activation combination Awitdrus Awitdrus; Decha Apriliany Suwandi; Agustino Agustino; Erman Taer; Rakhmawati Farma
Journal of Aceh Physics Society Volume 10, Number 3, July 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i3.18517

Abstract

Abstrak. Pembuatan elektroda karbon superkapasitor berbasis limbah pelepah aren dengan kombinasi pengaktifan kimia dan fisika telah berhasil dilakukan. Aktivasi kimia dilakukan dengan menggunakan agen pengaktif 0,3 M KOH dan aktivasi fisika menggunakan gas CO2 pada suhu 900oC selama 2,5 jam. Karakterisasi sifat fisis elektroda meliputi susut massa, tebal, diameter, densitas dan derajat kristalinitas. Karakterisasi sifat elektrokimia elektroda dilakukan dengan menggunakan metode siklis voltametri. Setelah proses karbonisasi-aktivasi fisika, massa, tebal, diameter dan densitas elektroda mengalami penurunan persentase masing-masing adalah 60,87; 30,43; 24,08 dan 5,71%. Elektroda PA-0,3 memiliki struktur semi kristalin, yang ditandai dengan adanya dua puncak yang lebar pada sudut hamburan sekitar 25o dan 46o. kapasitansi spesifik elektroda PA-0,3 berdasarkan variasi laju pemindaian  adalah 90 F g-1 untuk 1 mV s-1, 82 F g-1 untuk 2 mV s-1, dan 71 F g-1 untuk 5 mV s-1. Abstract. The production of supercapacitor carbon electrodes based on sugar palm frond waste using chemical and physical activation combinations have been successfully carried out. The chemical activation was carried out using 0.3 M KOH activating agent and the physical activation using CO2 gas at a temperature of 900oC for 2.5 h. Characterization of the physical properties of the electrodes includes mass loss, thickness, diameter, density and degree of crystallinity. The electrochemical properties characterization of the electrodes was carried out using the cyclic voltammetry method. After the carbonization-physical activation process, the mass, thickness, diameter, and density of the electrodes decreased in the percentage of 60.87, 30.43, 24.08, and 5.71%, respectively. The PA-0.3 electrode has a semi crystalline structure, which characterized by the presence of two broadening peaks at a scattering angle around of 25o and 46o. The specific capacitance of the PA-0.3 electrode based on the scan rate variations is 90 F g-1 for 1 mV s-1, 82 F g-1 for 2 mV s-1, and 71 F g-1 for 5 mV s-1.Keywords: Sugar palm fronds, Chemical activation, Physical activation, Carbon electrode, Supercapacitor 
Identification of gold mineralization zones of low sulfidation epithermal systems using geoelectrical and magnetic methods in Ciparay area, Cibaliung Wahyu Eko Junian; Agus Laesanpura; Andri Yadi Paembonan; Muhammad Arief Wicaksono
Journal of Aceh Physics Society Volume 10, Number 3, July 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i3.18521

Abstract

Abstrak. Cibaliung merupakan daerah pertambangan mineral yang berada di Provinsi Banten. Hal ini, dibuktikan dengan adanya lubang tambang emas di daerah Cikoneng dan Cibitung. Penelitian tentang geofisika penting dilakukan guna menemukan cadangan emas baru di daerah Ciparay yang terletak di Sebelah Tenggara Cikoneng dan Cibitung. Metode geofisika yang digunakan di antaranya magnetik, resistivitas, dan induced polarization (IP). Metode magnetik digunakan sebagai survei pendahuluan untuk menggambarkan keberadaan struktur geologi pengontrol mineralisasi emas. Melalui peta reduce to pole dapat diketahui adanya tanda-tanda keberadaan struktur geologi yang ditunjukkan oleh anomali negatif (-220 hingga -135 nT) di Bagian Barat Daya daerah penelitian. Hasil teknik edge detectors menunjukkan adanya pola struktur dengan arah Northwest (NW) dan North-Northeast (NNE) yang dominan berada di Bagian Barat Daya sebelah Utara daerah penelitian. Metode resistivitas dan IP digunakan sebagai survei detail untuk menentukan keberadaan mineral yang terkandung dalam batuan. Hasilnya menunjukkan bahwa zona potensi mineralisasi ditunjukkan oleh anomali tinggi (resistivitas 50 ohm.m dan chargeability 40 msec). Resistivitas tinggi diduga sebagai respons batuan induk andesitic sedangkan, nilai chargeability tinggi merupakan respons dari hadirnya mineral-mineral bijih seperti emas dan perak. Zona potensi mineralisasi berada pada posisi patok 350-800 dengan arah persebaran mengikuti arah struktur geologi pengontrolnya yaitu NW dan NNE. Abstract. Cibaliung is a mineral mining area located in Banten Province. The area including gold mining in Cikoneng and Cibitung areas. Geophysical research is important to find new gold reserves at the Ciparay area, located in the Southeast of Cikoneng and Cibitung. Geophysical methods used include magnetic, resistivity, and IP. The magnetic method was applied as a preliminary survey to delineate the presence of the geological structure controlling the gold mineralization. Based on the RTP map, signs of the presence of geological structures are shown by anomalies -220 to -135 nT in the Southwestern part of the study area. The results of edge detector techniques show the existence of structural patterns in the direction of NW and NNE which are dominant in the Southwestern North of the study area. The resistivity and IP methods are employed for detailed investigation in order to obtain to determine the presence of minerals contained in rocks. The results show that the mineralized zones are indicated by high resistivity ( 50 ohm.m) and high chargeability ( 40 msec). High resistivity response is caused by andesitic source rock whereas, high chargeability response is related to the presence of ore minerals such as gold and silver. The mineralization prospect zone is indicated at the position of 350-800 and its direction corresponds to the direction of its geological structure namely NW and NNE.Keywords: New gold reserves, Negative magnetic anomalies, High resistivity, High chargeability. 
Instrumentation of realtime monitoring system towards level of C6H12O6, C2H5OH, CO2, temperature in tapai fermentation process Yuliani Yuliani; Khairi Suhud; Dedi Satria; Lelifajri Lelifajri; Binawati Ginting; Yuliani Aisyah; Fauzi Fauzi; Muhammad Syukri Surbakti
Journal of Aceh Physics Society Volume 10, Number 3, July 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i3.19161

Abstract

Abstrak. Tapai merupakan makanan yang dihasilkan dari hasil fermentasi, salah satunya berbahan dasar dari ubi kayu. Fermentasi oleh ragi (saccharomyces serevesiae) menjadikan perubahan kimia pada substrat karena aktivitas enzim yang dihasilkan mikroorganisme. Parameter-parameter yang ditinjau adalah perubahan kadar C6H12O6, gas C2H5OH, gas CO2, suhu dan kelembapan dalam proses fermentasi melalui sistem pengukuran elektronik berbasis mikrokontroller Arduino Uno. Rangkaian sensor mengandung modul input yaitu sensor FC-28, sensor MQ-3, sensor MG-811, sensor DHT-11 dan modul pemroses mikrokontroler ATMEGA238 dengan sistem Arduino Uno dan pada komponen output menggunakan layar LCD 2X16. Kadar karakterisasi berdasarkan keluaran ADC (Analog to Digital Converter) untuk C6H12O6 adalah 535 untuk tapai ubi kayu. Kadar C6H12O6 akan terus menurun dari hari pertama sampai hari keempat yang mencapai 175 pada tapai ubi kayu. Diperoleh nilai akhir kadar gas C2H5OH yaitu 582. Kadar gas CO2 406 untuk tapai ubi. Selanjutnya nilai suhu 31oC untuk tapai ubi dengan nilai kelembaban 95RH. Waktu panen tapai dapat dipersingkat yaitu dari 7 hari menjadi 4 hari. Penelitian ini diharapkan dapat memberikan informasi pemakaian yang dapat dipergunakan untuk tampilan komposisi tapai secara komersial atau untuk tujuan kesehatan. Abstract. Tapai is food produced from fermentation, one of which is made from cassava. Fermentation by yeast (Saccharomyces serevesiae) causes chemical changes in the substrate due to the activity of enzymes produced by microorganisms. The parameters reviewed are changes in levels of C6H12O6, C2H5OH gas, CO2 gas, temperature and humidity in the fermentation process through an electronic measurement system based on the Arduino Uno microcontroller. The sensor circuit contains an input module, namely FC-28 sensor, MQ-3 sensor, MG-811 sensor, DHT-11 sensor and ATMEGA238 microcontroller processing module with the Arduino Uno system and the output component uses a 2X16 LCD screen. The grade based on the ADC (Analog to Digital Converter) output for the C6H12O6 is 535 for cassava tapai. Levels of C6H12O6 will continue to decline from the first day to the fourth day reaching 175 in cassava tapai. Obtained the final value of C2H5OH gas content is 582. CO2 gas content of 406 for cassava tapai. Furthermore, the temperature value of 31oC for cassava tapai with a humidity value of 95RH. The harvest time for tapai can be shortened from 7 days to 4 days. This research is expected to provide usage information that can be used to display tapai composition commercially or for health purposes. Keywords: fermentation, tapai, cassava, FC-28, MQ-3, MG-811, DHT11, Microcontroller.
Synthesis of activated carbon electrodes from date seeds with a variety of separators for supercapacitor cell applications Desmagrini Desmagrini; Awitdrus Awitdrus; Erman Taer; Rakhmawati Farma
Journal of Aceh Physics Society Volume 10, Number 3, July 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i3.18512

Abstract

Abstrak. Karbon aktif yang berasal dari biomassa telah menjadi bahan elektroda paling kompetitif untuk superkapasitor karena sifatnya yang terbarukan dan berkelanjutan. Upaya optimalisasi dilakukan untuk proses pembuatan sel superkapasitor dengan memvariasikan separator agar dapat memperoleh kapasitansi spesifik yang tinggi. Biomassa biji kurma sebagai bahan dasar pembuatan elektroda karbon melalui proses prakarbonisasi, aktivasi kimia dengan aktivator KOH 0,3M, proses karbonisasi dengan suhu 650oC dialiri gas nitrogen. Penyusutan massa karbon sebesar 24,59%. Nilai densitas dari elektroda karbon setelah dilakukan proses karbonisasi adalah 0,852 g cm-3. Analisis struktur mikro menunjukkan bahwa elektroda karbon bersifat amorf ditunjukkan dengan adanya puncak pada sudut 2θ sekitar 24o dan 44o. Kapasitansi spesifik ditentukan dengan metode Cyclic Voltametry dan didapati sebesar 217,22; 176,18; dan 82,8 F/g masing-masing untuk variasi separator kertas whatman, kertas saring, dan membran telur ayam. Hasil penelitian menunjukkan bahwa pada kertas whatman merupakan separator terbaik untuk elektroda karbon dari biji kurma. Oleh karena itu karbon aktif yang dibuat dari biji kurma dengan biaya rendah, ketersedian mudah, dan berkelanjutan dapat diaplikasikan sebagai bahan elektroda untuk superkapasitor.Abstract. Activated carbon derived from biomass has become the most competitive electrode material for supercapacitors due to its renewable and sustainable nature. Optimization efforts are made for the process of making supercapacitor cells by varying the separator in order to obtain a high specific capacitance. Date seed biomass as the basic material for making carbon electrodes through a pre-carbonization process, chemical activation with a KOH activator of 0.3M, the carbonization process at a temperature of 650oC flowed with nitrogen gas. Shrinkage of carbon by 24.59%. The density value of the carbon electrode that was carried out by the carbonization process was 0.852 g.cm-3. The microstructure analysis showed that the carbon electrode was amorphous indicated by the presence of a peak at an angle of 2θ around 24o and 44o. Specific capacitance was determined by the Cyclic Voltametry method and was found to be 217.22, 176.18, and 82.8 F/g respectively for the Whatman paper, filter paper, and chicken egg membrane separator variations. The results showed that whatman paper was the best separator for carbon electrodes from date palm seeds. Therefore, activated carbon made from date seeds with low cost, easy availability, and sustainability can be applied as an electrode material for supercapacitors.Keywords: Date seed, Activated Carbon, Supercapacitor, Carbon Electrode, Separator
Cover Volume 10(3) July 2021 Editorial JAcPS
Journal of Aceh Physics Society Volume 10, Number 3, July 2021
Publisher : PSI-Aceh

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