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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Komunikasi Fisika Indonesia Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Jurnal Spektra Journal of Aceh Physics Society JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Jurnal Litbang Industri Jurnal Edu Research BULETIN FISIKA JOURNAL ONLINE OF PHYSICS Turbo : Jurnal Program Studi Teknik Mesin Spektra: Jurnal Fisika dan Aplikasinya Communications in Science and Technology Indonesian Physical Review APTEK Jurnal Fisika Indonesia Teknomekanik Unri Conference Series: Community Engagement Journal of Applied Materials and Technology Journal of Technomaterial Physics Dinamika Lingkungan Indonesia Jurnal Litbang Industri PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Newton-Maxwell Journal of Physics National Multidisciplinary Sciences Science, Technology, and Communication Journal

Erman Taer

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Author-ID : 400021

Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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PENGARUH VARIASI PENAMBAHAN ASAM PADA LARUTAN PENUMBUH UNTUK MENGHASILKAN PARTIKEL MnO2 Taer, Erman; Sarah, D.N.; Farma, R.; Taslim, R.
Jurnal Spektra Vol 16, No 3 (2015): Spektra: Jurnal Fisika dan Aplikasinya
Publisher : Jurnal Spektra

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AbstrakPenumbuhan Mangan Oksida (MnO2) menggunakan penambahan asam sulfat (H2SO4) dan asam nitrat (HNO3) pada larutan penumbuh KMnO4 di atas substrat karbon kayu karet telah berhasil dilakukan. Perbedaan penambahan kedua jenis asam pada larutan penumbuh menyebabkan perbedaan waktu penumbuhan. Warna larutan asal KMnO4 yang berwarna ungu perlahan-lahan berubah menuju warna cokelat yang stabil. Waktu penumbuhan larutan H2SO4 adalah 30 menit sedangkan untuk penambahan larutan HNO3 dengan waktu 120 menit. Scanning electron microscope, energi dispersif sinar-X dan difraksi sinar-X merupakan metode yang digunakan untuk melihat morfologi dan bentuk partikel, kandungan unsur dan derajat kristalin dari partikelÂ MnO2 yang dihasilkan. Partikel MnO2 yang dihasilkan menggunakan H2SO4 berbentuk pipih datar sedangkan bentuk partikel MnO2 yang dihasilkan menggunakan HNO3 adalah berbentuk bulat. Kandungan MnO2 yang terkandung pada sampel HNO3 lebih banyak dibandingkan pada sampel H2SO4. Keberadaan MnO2 ditunjukkan dengan adanya tambahan puncak pada sudut 2Î¸ = 21,3770 dan 55,70.Kata Kunci : Subsrat Karbon Kayu Karet, Asam Sulfat, Asam Nitrat dan Mangan OxidaÂ AbstractÂ The growthing of Manganis Oxide (MnO2) using addition of sulfuric acid (H2SO4) and nitric acid (HNO3) in a solution of KMnO4 at surface of carbon substrate from rubber wood has been successfully carried out. Growth in the addition of two types of acid in the solution growth cause difference in growth time. Colored of origin KMnO4 was a violet and slowly changing towards a stable brown color. Time changes color from violet to brown is chosen as a time of growth. Growt time for addition of H2SO4 solution is 30 minutes while for the addition of HNO3 solution is 120 minutes. Scanning electron microscope, energy dispersive X-ray and X-ray diffraction method used to study the morphology and particle shape, element content and degree of crystalline of MnO2 particle wave produced. MnO2 particles produced using H2SO4 in shape of flattened while MnO2 particle from produced using HNO3 is spherical. The MnO2 content of the samples HNO3 contained more than the H2SO4 samples. The existence of MnO2 show by an additional peak at angle 2Î¸ = 21,3770 and 55,70.Keywords : carbon substrate rubber wood, sulfuric acid, nitric acid and manganis oxide

PEMBUATAN DAN KARAKTERISASI SEL SUPERKAPASITOR MENGGUNAKAN KARBON AKTIF MONOLIT DARI KAYU KARET BERDASARKAN VARIASI KONSENTRASI HNO 3 Arif, Eko Nur; Taer, Erman; Farma, Rakhmawati
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Synthesis of carbon electrode from rubber wood was started by carbonizing process by adding N 2 gas at a temperature of 600 Â°C and continued by utilizing physical activation of CO 2 gas at 850 Â°C for 2 hours, and followed by a combination process of chemical activation using potassium hydroxide activator and nitric acid (HNO 3 ) with its concentration of 5%, 15% and 25%. Density of resulted electrodes was 0.407 g/cm3, 0.359 g /cm3 and 0.349 g/cm3 for each sample. X-ray diffraction analysis showed amorphous carbon electrodes in the presence of ramps at 2Î¸ of 25.25 o and 44.21 o . The results of cyclic voltametry obtained specific capacitance of 10.444 F/g, 70.1969 F/g and 81.8234 F/g, respectively for each HNO 3 concentration. It was concluted that the addition of HNO3 to the activation proces can improve the performance of supercapacitors cell. The highest specific capacitance obtained 81.823 F/g for the 25% HNO3.

EFEK MODIFIKASI PERMUKAAN KARBON AKTIF MONOLIT TERHADAP SIFAT FISIS DAN ELEKTROKIMIA SEL SUPERKAPASITOR Yanti, Sri; Taer, Erman; ', Sugianto
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Surface modification of activated carbon monolith electrode for a supercapacitor cell from rubber wood has successfully been made by two activation methods. Physical activation was perfomed using CO2 gas at a temperature of 800oC, and chemical activation used 3 M KOH and 3 M NaOH as activation agents. This study used two kinds of activated agents, namely COK for KOH activated agent and CON for NaOH activated agent. Both activation methods yielded different physical and electrochemical properties. The physical properties that were analyzed were density , surface morphology, and BET surface area, whereas the electrochemical properties were specific capacitance, specific energy, and specific power. N2 gas isothermal adsorption showed a BET surface area of 577.52 m2g-1 and 441.45 m2g-1. Meanwhile, the electrochemical properties obtained of sample were the specific capacitance values of 103.65 Fg-1 and 83.45 Fg-1for CON and COK, respectively . Based on all obtained data and their analysis, it was concluded that KOH activators resulted the electrochemical properties better compared tothose of NaOH activators.

PENGARUH AKTIVASI KARBON DIOKSIDA PADA PRODUKSI KARBON AKTIF MONOLIT DARI KAYU KARET Herniyanti, Septa; Taer, Erman; ', Sugianto
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Activated carbon monoliths from rubber wood have successfully been fabricated using combined physical-chemical activation and chemical activation. The process of combination of physical-chemical activation was started from physical activation process by flowing CO2gas for 2 hours at temperature of 800 oC, then applying chemical activation process by immersing the carbon in 3 M KOH solution and 2,5 M H3PO4 solution. The samples activated by the combination of physical-chemical activation were named as A1and those that were activated by chemical activation were named as sample A2. Both activation methods yielded different activated carbon. The physical properties analyzed were density, porosity, and BET surface area, whereas the electrochemical property obtained from measurements using cyclic voltammogram method was specific capacitance. N2adsorption-desorption gas treatment resulted BET surface area of 542.586 m2g-1 and 115.147 m2g -1 for each sample, respectively. The resulted specific capacitances of the measurement using the cyclic voltammogram method for each sample were 43.67 F g-1and 37.74 F g-1 , respectively. Based on all obtained data analysis, it can be concluded that the physical-chemical activation produced larger BET surface area and higher specific capacitance than those resulted from chemical activation for supercapacitor cells.

KEBOLEHULANGAN (REPRODUCIBILITY) DALAM PEMBUATAN SEL SUPERKAPASITOR DARI KAYU KARET Rizki, Afdhal; Taer, Erman; ', Rika
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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A research has been conducted on reproducibility measurement of specific capacitance of supercapacitor cell. The purpose of this study was to measure reproducibility capacitive properties of supercapacitor cell based on rubber wood electrode. Synthesis of supercapacitor cell was started by producing electrode with carbonization process in vacuum flowing N2 gas at a temperature of 7000 C and through physical activation using CO2 gas with a temperature of 900° C for 2 hours. Specific capacitance of the cell was measured using cyclic voltammogram at scan rate of 1 mV/s – 100 mV/s for three different cells. The highest specific capacitance of 78.692 F/g with 3.274 % error percentage to be found at 1 mV/s of scan rate while the highest error percentage was observed at 16.785 % for 100 mV/s. Scanning Electron Microscope micrograph from the top and side view with magnification of 500 and 3000 X showed a pore in the form of a tunnel straight down on the samples. X-Ray Difraction measurement showed the peaks of carbon electrode occurred at 2θ of 24,442o - 44.101 o due to the presence of carbon with their crystal orientation of (002) and (100). The overall results showed the measurement of specific capacitance of supercapacitor cell was found to be accepted with low standard deviation (< 5 %) especially for measurement of 1 – 50 mV/s in scan rate.

PEMBUATAN DAN KARAKTERISASI ELEKTRODA KARBON AKTIF DENGAN KARBONISASI DAN AKTIVASI BERTINGKAT MENGGUNAKAN GAS CO2 DAN UAP AIR Rakhmawati Farma., Yusriwandi, Erman Taer,; Taer, Erman
Edu Research Vol. 6 No. 1 (2017): Edu Research
Publisher : Universitas Pasir Pengaraian

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Has been conducted a research to produce cell supercapacitor electrodes of activated carbon (AC) which were prepared using rubber wood sawdust (SGKK). KA electrode is made via carbonization and activation method integrated using CO2 and water vapor for 4 hours. N2 flow is maintained from room temperature to a temperature of 600 0C, followed by CO2 to a temperature of 900 0C for 2 hours, water vapor flow continued for 2 hours at a temperature of 900 0C. Crystallite structure is reviewed samples using X-Ray Diffraction (XRD). Methods Scanning Electron Microscopy (SEM) was used to analyze the surface morphology. While the composition of the content chemical elements the samples were analyzed using Energy Dispersive X-ray (EDX). Electrochemical properties of samples were tested using the method Cyclic Voltammetry (CV). Overall characterization of physical properties indicates that the sample is a carbon material with a carbon content of 90%. Electrochemical test proved that the integrated activation method can produce aÂ electrode with excellent performance with a specific capacitance value of 72 F/g.

Meso- and microporous carbon electrode and its effect on the capacitive, energy and power properties of supercapacitor Erman Taer; R. Taslim; Sugianto Sugianto; M. Paiszal; Mukhlis Mukhlis; W. S. Mustika; Agustino Agustino
International Journal of Power Electronics and Drive Systems (IJPEDS) Vol 9, No 3: September 2018
Publisher : Institute of Advanced Engineering and Science

Activated carbon monoliths (ACMs) with average pore diameters in the meso- and micropore regions were successfully produced from biomass material. ACM synthesis uses chemical activation with KOH and ZnCl2 activating agents. The carbon and activating agent mass ratios were 1:1, 1:3, 1:5 and 1:7. Both activating materials produced an ACM with an average pore diameter of 3.2 nm. The specific capacitance, specific surface area, energy and power were as high as 63 F/g, 650 m2/g, and 0.23 Wh/kg for KOH and 73 F/g, and 522 m2/g, and 19 W/kg for ZnCl2 activating agents, respectively. For comparison, we also studied the physical and electrochemical properties of ACM with an average pore size in the micropore range from the same raw material.

Characterization of Physical Properties for Activated Carbon from Garlic Skin Miftah Ainul Mardiah; Awitdrus Awitdrus; Rakhmawati Farma; Erman Taer
Journal of Aceh Physics Society Volume 10, Number 4, October 2021
Publisher : PSI-Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jacps.v10i4.19571

Abstrak. Karbon aktif yang berasal dari biomassa telah menjadi bahan material dasar yang sudah digunakan secara luas untuk berbagai aplikasi eperti penyerapan, absorben, elektroda, penyimpan energi, dan aplikasi lainnya. Oleh karena itu perlu untuk pengoptimalkan sumber mentah karbon aktif berbiaya rendah dan memiliki porositas yang tinggi. Biomassa kulit bawang putih sebagai bahan dasar pembuatan karbon aktif melalui proses pra-karbonisasi, aktivasi kimia dengan aktivator KOH dan ZnCl2 dengan masing-masing kosentrasi sebesar 0,25 M, 0,5 M, dan 0,75 M dan tanpa aktivator kimia. Proses karbonisasi dengan suhu 600°C dialiri gas nitrogen dan diaktivasi fisika dengan suhu 850°C. Penyusutan massa karbon sebesar 29,4%. Nilai densitas dari elektroda karbon untuk aktivator KOH dengan kosentrasi 0,5M yaitu 0,64 g.cm-3dan untuk aktivator ZnCl2 dengan kosentrasi 0,5M yaitu 0,71 g.cm-3. Gugus fungsi yang dimiliki elektroda kulit bawang putih diidentifikasi sebagai C-C, C C (alkuna), C-H (alkana), dan (O-H) yaitu pada bilangan gelombang 1600 cm-1, 1500 cm-1, 2950 cm-1 dan 2900-3600 cm-1. Hasil penelitian menunjukkan bahwa pada aktivator KOH dan ZnCl2 dengan kosentrasi 0,5 M kondisi terbaik untuk variasi guna menunjang pengoptimalkan sumber mentah karbon aktif dan bisa digunakan dalam berbagai apliasi yang lebih luas. Abstract. Activated carbon derived from biomass has become a basic material that has been used widely for various applications such as absorption, absorbent, electrodes, energy storage, and other applications. Therefore, it is necessary to optimize the raw source of activated carbon which is low cost and has high porosity. Garlic skin biomass as a basic material for making activated carbon through a pre-carbonization process, chemical activation with KOH and ZnCl2 activators with concentrations of 0,25 M, 0,5 M, and 0,75 M respectively and without chemical activators. The carbonization process with a temperature of 600°C is flowed with nitrogen gas and is physically activated at a temperature of 850°C. Shrinkage of carbon by 29.4%. The density value of the carbon electrode for the KOH activator with a concentration of 0.5M is 0.64 g.cm-3 and for the ZnCl2 activator with a concentration of 0,5M is 0,71 g.cm-3. The functional groups possessed by the garlic skin electrode were identified as C-C, C = C (alkynes), C-H (alkanes), and (O-H), namely at the wave numbers 1600 cm-1, 1500 cm-1, 2950 cm-1 and 2900-3600 cm-1. The results showed that the KOH and ZnCl2 activators with a concentration of 0.5 M were the best conditions for variation in order to optimize the raw source of activated carbon and could be used in a wider variety of applications.

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

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

The Preliminary Study of Utilization of Water Chestnut as Supercapacitor Electrode Using Steam Activation Zulkifli Zulkifli; Awitdrus Awitdrus; Erman Taer
Journal of Aceh Physics Society Volume 7 Number 1, January 2018
Publisher : PSI-Aceh

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Purun tikus (eleocharis dulcis) merupakan tumbuhan gulma yang bersifat polutan di perairan tawar. Efek pertumbuhan purun tikus yang cepat menyebabkan pendangkalan perairan, gangguan sistem irigasi dan pengurangan oksigen bawah air. Salah satu upaya pemanfaatan purun tikus yang bernilai tambah tinggi adalah purun tikus sebagai elektroda karbon superkapasitor. Karbon aktif berasaskan purun tikus dibuat dengan metode dua langkah secara simultan yaitu karbonisasi pada suhu 600°C dalam lingkungan nitrogen dan aktivasi fisika menggunakan uap air pada suhu 900°C selama 1 jam. Densitas karbon aktif menurun dari 0,85 menjadi 0,78 gr/cm3 setelah diaktivasi. Sifat elektrokimia elektroda karbon diukur dengan metode siklik voltammetri. Kapasitansi spesifik elektroda karbon masing-masing 58, 33 dan 23 F/g pada laju imbasan 1, 2 dan 5 mV/s. Hasil penelitian ini menunjukkan bahwa purun tikus dapat dijadikan elektroda superkapasitor dan menjadi solusi untuk mengurangi kerusakan ekosistem perairan tawar. Water chestnut are polluted weed plant in fresh water. The effect of rapid growth of water chestnut causes siltation of water, irigation system disturbance and reduction of oxygen underwater. One of the effort of the value added utilization of water chestnut is as carbon electrode for supercapacitor application. Water chestnut based activated carbon is prepared by a two-step method simultaneously i.e. carbonization at 600°C in a nitrogen atmospheric and physical activation using steam at 900 °C for a hour. The density of activated carbon after activation is decreased from 0,85 to 0,78 gr/cm3. The electrochemical properties of the carbon electrode are measured using cyclic voltammetry method. The specific capacitance of carbon electrode are 59, 33 and 23 F/g at the scan rate of 1, 2 and 5 mV/s, respectively. The result of this study are indicated that water chestnut suitable for supercapacitor electrode and become a solution to reduce the freshwater ecosystem damage. Keywords: Purun tikus, superkapasitor, siklis voltammetri, kapasitansi spesifik, perairanREFERENCEAsikin, S. dan Thamrin, M. 2012. Manfaat Purun Tikus (Eleocharis Dulcis) Pada Ekosistem Sawah Rawa. Jurnal Litbang Pertanian, 31(1): 35-42Arepalli, S., Fireman, H., Huffman, C., Moloney, P., Nikolaev, P., Yowell, L., Higgins, C. D., Kim, K., Kohl, P. A., Turano, S. P. and Ready W. J. 2005. Carbon-nanotube-based electrochemical double-layer capacitor technologies for spaceflight applications. Journal of The Minerals, Metals and Materials Society, 57:26-31.Erari, S.S., Mangimbulude, J., Lewerissa, K. 2012. Pencemaran Organik di Perairan Pesisir Pantai Teluk Youtefa Kota Jayapura, Papua. Prosiding Seminar Nasional Kimia Unesa. ISBN 978-979-028-550-7. (C): 327-340.Farma, R., Deraman, M., Awitdrus, A., Talib, I.A. Taer, E., Basri, N.H., Manjunatha, J.G., Ishak, M.M., Dollah, B.N.M., Hashmi, S.A. 2013. Preparation of highly porous binderless activated carbon electrodes from fibres of oil palm empty fruit bunches for application in supercapacitors. Bioresource Technology. 132:254–261Feng, C.W., R.L. Tseng., C.C. Hu., C.C Wang., 2015, Effects of pore structure and electrolyte on the capasitive characteristics of steam and KOH activated carbons for supercapasitors, Journal of power sources. 144:302-309.Ionnidou, A and Zabaniotu. 2007. Agricultural residues of precursors for activated carbon production–a review, Renewable and sustainable energy reviews. 11:1705-1966.Kurniawan, F., Wongso, M., Ayucitra, A., Soetaredjo F.E., Angkawijaya A. E., Ju,Y. H., Ismadji, S. 2014. Carbon microsphere from water hyacinth for supercapacitor electrode. Journal of the Taiwan Institute of Chemical Engineers. 47: 197-201.Liu, B., Zhou, X., Chen, H., Liu, Y., Li, H. 2016. Promising porous carbons derived from lotus seedpods with outstanding supercapacitance performance. Electrochimica Acta. 208 :55–63.Taer, E., Mustika, W.S., Zulkifli, Syam, I.D.M., Taslim, R. Pengaruh Suhu Pengaktivan CO2 Terhadap Luas Permukaan Elektroda Karbon dan Sifat Kapasitan Sel Superkapasitor dari Kayu Karet. 2015. Prosiding Seminar Nasional Fisika Universitas Andalas (SNFUA). 96-100Taer, E., Taslim, R., Aini, Z., Hartati, S.D., Mustika, W.S. 2017. Activated carbon electrode from banana-peel waste for supercapacitor applications. AIP Conference Proceedings. 1801:040004-1-040004-4.Taer, E., Zulkifli., Arif, E.N., Taslim, R. Analisa Kapasitansi Spesifik Elektroda Karbon Superkapasitor dari Kayu Karet Terhadap Laju Scan Berdasarkan Variasi Aktivasi HNO3. 2016. Spektra Jurnal Fisika dan Aplikasinya. 1(1): 35-40.Yu, M., Han, Y., Li, J., Wang, L., 2016. CO2-activated porous carbon derived from cattail biomass for removal of malachite green dye and application as supercapacitors. Chemical Engineering Journal. 17:1-41.

Co-Authors ', Rika ', Sugianto A. Ira Afdhal Rizki Afrinal, Afrinal Agustino Agustino Agustino Agustino Agustino Agustino Agustino Agustino Agustino Agustino Agustino, Agustino Ahmad Fudholi Akrajas Ali Umar Andika Afrianda Anisa Indriawati Anita, Sofia Antonius Surbakti Antonius Surbakti Antonius Surbakti Apriwandi Apriwandi . Apriyani, Irma Awaludin Martin Awitdrus Awitdrus, Awitdrus Bidayatul Armynah Budi Astuti Chitraningrum, Nidya D.N. Sarah D.N. Sarah, D.N. Debi Yana Decha Apriliany Suwandi Delovita Ginting, Delovita Deniza, Rindhu Nabila Desmagrini Desmagrini Desmawati Desmawati Dewi Marina Dewi Ramayani Edy Saputra Eko Nur Arif Erwin Amiruddin Erwin Erwin Eva Wahyuni Harahap Fairuzy, Zeeva Khalilah Fitria Puspita Sari Gina Sania H. Yusra Harahap Eva Wahyuni Hardanto, Lilik Tri Hasanah, Fainida Hefniati Hermansyah Aziz Indah Tamara Sitorus Indriawati, Anisa Inrizky Domy Muchammadsam Intan Kusmawati Iwantono Iwan Barnawi Jasril Jasril Juandi Juandi Julnaidi Julnaidi Julnaidi, Julnaidi Juwita Ade Putri Khairul Ihsan Khotimah, Nur Khumairah, Zahra Kresna, Pharada Kristin Natalia Lazuardi Umar Lilik Tri Hardanto Lutfi Rindang Lestari M. Paiszal Marina, Dewi Meisya, Meisya Melda Riyani Butet Melinda Vivi Miftah Ainul Mardiah Minarni Shiddiq Mozaffari, Nastaran Mozaffari, Niloofar Muhammad Nasir Muhammad Nasir Mukhlis Mukhlis Mustika, Widya Sinta Nasruddin Nasruddin Novi Yanti Novi Yanti Novi Yanti Novi Yanti Nur Akmal Nursyafni, Nursyafni Nursyaputri, Wan Mery Pandi Kurniawan Pharada Kresna Pratiwi, Lini Purba, Cenora Evelynza Putri, Rahma Lia R. Farma R. Farma R. Farma, R. R. Syech R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim R. Taslim, R. Rahmi Dewi Rahmondia Nanda Setiadi Rakhmawati Farma Rati, Yolanda Retno Handayani Riad Syech Riduan Alvinsen Sirait Rika ' Rika Taslim Rika Taslim Rika Taslim Rika Taslim Rika Utari Rikaryalita Novitra Rini, Ari Sulistyo Romi Fadli Syahputra Ropiqotul Husna S. Aiman S. D. Hartati S. Nurjanah Saktioto Saktioto Salomo Salomo Septa Herniyanti Sitorus, Afrida Helena Sri Yanti Sugianto ' Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugianto Sugiyanto Sugiyanto Sukendi Sukendi Sulistyo Rini, Ari Supian, Faridah Lisa Syahrul Syahrul Syamsudhuha Syamsudhuha T. Oktaviani Taslim Rika Usman Malik W. S. Mustika W.S. Mustika Wetya Fatma Kumala Sari Widodo Budi Kurniawan Yan Soerbakti Yan Soerbakti Yanuar Hamzah Yolanda Rati Zikri Alrifani Zulkarnain Usman Zulkifli ' Zulkifli Zulkifli Zulkifli Zulkifli Zurya Hanifa

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