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SYAIFUL BAHRI
Riau University
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Konversi Nila Nipah (Nypa Fruticans Wurmb) Menjadi Bio Oil Dengan Teknologi Pirolisis Menggunakan Katalis Ni/Lempung Muhammad Ismet; Syaiful Bahri; Yusnimar Yusnimar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Fuel oil is a natural resource, due that needsare very important. Fuels are nonrenewable energy sources. Bio-oil is one of thealternative energy solutions that can be used as a subtitute for petroleum. Riau province has palm plantation area of 75459.26 Ha and is also rich in natural resources such as the potential of natural clay. Bio-oil can be produced from a palm frond by using pyrolisis process with catalyst Ni/clay. This study aimed to determine the effect of the catalyst Ni/clay variation toward the biomass, the influence of variations developing of metal toward clay and characterization of physical and chemical properties to the yield of bio-oil product. in this study the pyrolisis process carried out at a temperature of 320°C, 500 ml silinap, biomass 50 grams with the size of -100+200 mesh sieve and the variatio of catalyst Ni/clay by 0,4%, 0,5%, 0,6% w/w to the biomass and Ni metal carrier variation 0f 0%, 1%, 2%, 3% w/w of the clay. The research product bio-oil 72.072% of yields in 0,6% of catalyst and 1% of metal. The result of the analysis of physical properties of bio-oil obtained is the 0.924 gr/ml density, 2.351 cSt viscosity, acid number 70.218 mg NaOH/gr sample and 50°C flash point. Chemical properties analysis of bio-oil using GCMS (Gass Chromatography-Mass Spectroscopy) on the use of catalyst 0,6% and metal 1%obtained five dominant chemical compound that is 2-Methylpropene 2.84%, 2,4,4-Trimethyl-1-pentene 3.84%, 2,2,4,4-Tetramethylpentane 6.78%, cyclohexane,1bromo-4-methyl 8.13% and 2,4,4-Trimethyl-2-penten 5.11%.   Keyword: Bio-oil, pyrolysis, sheath Nipah, catalyst Ni / clay, Yield.
Fermentasi Larutan Glukosa Untuk Produksi Etanol Dengan Teknik Immobilisasi Sel Saccharomyces Cerevisiae Yeni Rizki; Syaiful Bahri; Chairul Chairul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Ethanol or ethyl alcohol (C2H5OH) is an organic compound that is very important in the chemical industry and has many benefits in human life. One way of making ethanol is fermentation. Arising problem in the fermentation process is the inhibition of the ethanol product that will damage the structur of the plasma membrane and cause protein denaturation will result in inhibited microbial growth and lower productivity. In this research, the fermentation process of glucose solution with cell immobilization technique to obtain ethanol at higher levels. This research is aimed to study the process of making ethanol with cell immobilization technique and determine the effect of the initial sugar concentration and fermentation time of the acquisition of ethanol. Fermentation takes place in batch reactor with a volume of 2 liters of fermentation medium, heavy beads of 20% (w/v), pH 5,0. The fermentation process of glucose solution was done at various variation of fermentation time i.e 24, 36, 48, 60, 72, 84 and 96 hours and also various variations of concentration of glucose as the intial sugar i.e 100 mg/ml, 125 mg/ml and 150 mg/ml. The process was stired at speed of 200 rpm and temperature of fermentation at room temperature (25 – 30oC). Ethanol concentrations were analyzed using Gas Chromatography. From the result was obtained that the maximum fermentation process is show at glucose concentration of 150 mg/ml and fermentation time of 60 hours with ethanol concentration of 5,149% (v/v) or 40,647 mg/ml.Keywords : Ethanol, Fermentation, Immobilized Cells, Saccharomyces cereviceae.
Pembuatan Biodiesel Dari Biji Kapuk (Ceiba Pentandra) Dengan Katalis Padat H-Zeolit Afrielyanda H; Syaiful Bahri; Khairat Khairat
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Biodiesel as alternative diesel fuel made from renewable biological resources, such as vegetable oils and animal fats. In Indonesia, the fuel consumption is increasing every year, so often there is a shortage of fuel. Therefore, the latest innovations necessary to produce alternative energy such as biodiesel. In this research, the conversion of cotton seed oil to biodiesel was performed by using catalyst "H-zeolite". First, cotton seed is dried whole day in order to reduce the water content and then extracted using a solvent n-hexane. Then separate the solvent with oil until the oil obtained pure. Afterwards, cotton seed oil is converted into biodiesel using transesterification reaction with methanol as reagent and H-zeolite catalyst. Transesterification reaction is carried out at 600C temperature operating conditions, the stirring speed of 200 rpm and reaction time of 200 minutes. To get the maximum biodiesel, using variation the molar ratio of cotton seed oil and methanol (1: 3; 1: 6; 1: 9), the variation of the catalyst (1%, 2%, 3% w/w) were performed in this research . The results showed maximum biodiesel conversion of about 79.35%, the molar ratio of cotton seed oil and methanol 1: 9 and catalyst 2% of the total amount of oil. Based on the analysis of physical properties of biodiesel has a density of 859 kg / m3, 5.60 cSt viscosity, acid number 0.561 mg-KOH / g sample. In addition, analysis of the chemical properties of biodiesel from cotton seed oil using GC - MS.Keywords : Cotton seed oils, Biodiessel, H-zeolit catalyst, Transesterification reaction.
Penggunaan NI/NZA Sebagai Katalis Pada Proses Hidrodeoksigenasi Pirolisis Kulit Pinus (Pinus Merkussi Menjadi Bio-Oil Anna Apryana; Syaiful Bahri; Zuchra Helwani
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Dependence on fossil fuels as an energy source brings us to the energy crisis. Therefore, it is necessary to reduce human dependence on non-renewable energy. One of them is to produce bio-oil from biomass are processed through hydrodeoxygenation pyrolysis technology. One type of biomass that can be used as raw material, namely energy sources pine bark which is a waste of the pine trees. This research aims to produce bio-oil from the bark of pine (pine merkussi) as an alternative fuel, studied the effect of the weight ratio of the catalyst Ni / NZA against biomass, studied the effect of impregnated metal Nickel (Ni) in Natural Zeolite deAluminated (NZA) and characterization of physical properties and the chemistry of the bio-oil is produced. Hydrodeoxygenation pyrolysis process is carried out at a temperature of 320 0C, silinap 500 ml, biomass 50 grams with a size of -100 + 200 mesh sieve, catalyst variation Ni / NZA of the biomass of 4%; 6% and 8% by weight and Ni metal impregnation variation of the Natural Zeolite deAluminated (NZA) of 0%; 1%; 2% and 3%. Results of this study produce bio-oil yields the largest on the use of the catalyst Ni / NZA 8% by weight of the metal content of 3% by 70.99%. Characterization of physical properties of bio-oil obtained in the form of density of 0.980 g / ml, 1,590 cSt viscosity, acidity 32.444 mg NaOH / gram sample, a flash point of 40 0C and calorific value of 44.509 MJ / kg. While the characterization of the chemical properties of bio-oil using Gas Chromatography-Mass Spectroscopy (GCMS) in the can several dominant chemical components such as acetic acid as much as 34.47%, 3-furaldehyde as much as 13.01%, 2-propanone as much as 12.46%, a 1.2-Ethanediol as much as 9:49% and 2-butanone as much as 6.26%.Keywords: Bio-Oil, Catalyst Ni/NZA, Hydrodeoxygenation Pyrolysis , Pine Bark
Pemanfaatan Limbah Medis Padat Infeksius RSUD Arifin Achmad Pekanbaru Dengan Teknik Solidifikasi Sebagai Campuran Batako Bunga Fitriani Gumadita; Syaiful Bahri; Elvi Yenie
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Hospital solid medical waste contain hazardous and toxic materials. One way to manage solid medical waste is a mixed hospital as one of the ingredients in the manufacture of concrete blocks. The purpose of this study was to test the initial testing and the final content of cadmium (Cd) and chromium (Cr) heavy metals through the test the concentration of heavy metals, and to test the compressive strength of concrete blocks. In this research, the B3 waste treatment method using solidification technology by varying the 0%, 10%, 20%, 30% and drying time 14, 21 and 28 days and the test concentrations of heavy metals. The results showed that in terms of compressive strength 28 days, brick with a variation of 10% of age 14 days 105 kg/ cm2, 10% aged 21 days 135 kg/cm2 and 10% u it 28 days to 200 kg/cm2 where it is strong pressure to rise. From the test results are known concentrations of heavy metals mostly heavy metal content is 30% at 0.00034 ppm Cd of 0.180 ppm after disolidifikasi. Likewise, 30% of heavy metals in Cr is 8.509 ppm 0,044 ppm of immobilized so well that solid infectious medical waste can be used as a mixture of brick that is safe for the environment.Keywords: Infectious Medical Waste Solid, brick, Compressive Strength, Solidification, Heavy Metal Concentration Test.
Pirolisis Biomassa Kayu Pinus (Wood Pine) Dengan Katalis Mo/Lempung Menjadi Bio-Oil M Arfi Adharyandy Firman; Syaiful Bahri; Khairat Khairat
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Indonesia high dependence on fossil fuels from year to year makes the conditions of dwindling fossil fuel reserves. This condition implies the need to optimize the use of renewable energy in order to maintain the availability of energy in the future. An alternative of renewable energy and eco friendly bio-oil. Bio-oil can be produced by pyrolysis process of the pine wood biomass with a Mo/Clay catalyst. This research examines the influence of variations containing Mo (0%, 1%, 2% and 3% w/w) and variations in the weight of the catalyst, Mo/clay (3%, 5% and 7% w/w) in the pyrolysis determine fir wood into bio-oil against the yield obtained and determine the physical and chemical properties of the bio-oil produced from pine wood pyrolysis process. In this research, pine wood biomass, as much as 50 grams with a size of 100 mesh, silinap 500 ml, and the catalyst Mo/clay incorporated in the pyrolysis reactor. Pyrolysis is carried out at 320oC and 300 rpm stirring speed for 120 minutes carried out by flowing nitrogen gas (N2) as an inert gas. The results showed that the optimum yield 61.89% was obtained on the catalyst, Mo/Clay 5% w/w with Mo metal content of 3% w/w. The result of the physical and chemical properties, obtained by the density (0.967 g / ml), viscosity (6.459 cSt), acidity (105.282 mg NaOH / g sample) and flash point (48oC). The results of chemical composition analysis by GC-MS, chemical components of the dominant acquired bio-oil m methylcyclohexyl bromide 9.42%, 3-butene-1,2-diol, 1- (2-furyl) - 6.95%, 2,2,3,3-tetramethyl butane 6.12%, cis-2,2-dimethyl-4-decene and 4.58% 1-propene, 2-methyl, tetramer 3.78%Keywords: Biomass, bio-oil, Mo/ clay catalyst, wood pine, pyrolysis
Produksi Biodiesel Dari Minyak Nyamplung (Callophyllum Inophyllum) Menggunakan Katalis Lantanum/Lempung : Studi Pemgaruh Suhu Reaksi Raja Valti Mhd Siregar; Syaiful Bahri; Khairat Khairat
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Biodiesel is an alternative energy to replace fossil fuels. It can be synthesized by transesterification process of palm oils. Commonly the process of producing biodiesel was used NaOH or KOH as homogeneous catalyst which has the disadvantage the formation of side products such as soaps and complexity of the separation of catalyst. Several research have developed that using heterogeneous catalys. Synthesis of biodiesel from callophyllum inophyllum oil using metal alloys lanthanum on clay as catalyst. This research studied the effect of temperature reaction with variations 55, 60, 65 oC to the yield of biodiesel produced, and to identifying the characteristics of biodiesel produced. This study begins activation of the catalyst in a way additions H2SO4, impregnation, calcination, oxidation and reduction. Furthermore, to remove impurities and gum contained in the oil was done the degumming process. After that, do the process of transesterification in the three neck flask reactor the mole ratio of methanol : oil 12: 1 and a reaction time 120 minutes. The result, highest biodiesel obtained amounted to 78.41% at the reaction temperature of 60 oC. Physical characterization of biodiesel were done such as density 857 kg/m3, kinematic viscosity 4.735 mm2/s, acid number 0.61 mg-KOH/g biodiesel and flash point 127.5 oC respectively which have accordance with the standards of Indonesian biodiesel (SNI 04-1782-2006).Keywords :La / clay, callophyllum inophyllum oil, degumming, transesterification, biodiesel
Pengolahan Air Gambut Untuk Menurunkan Kadar Besi Dan Mangan Dengan Proses Elektrokoagulasi Secara Kontiniu Adam Fadillah; Idral Amri; Syaiful Bahri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Peat water from surface water or groundwater has high organic content and there is a metal content inside such as ferrous metals and Mn. Therefore it is necessary to do the processing by using electrocoagulation. The purpose of this study is to discuss the performance test of the electrocoagulation process continuously on the decrease of Fe and Mn levels and determine the optimum condition. The electrocoagulation process uses electric power that flows in the direction of the electrode. Electrocoagulation reactors paired with cables that connected the power supply to an electric current with varying voltages (18, 20, 22, and 24 volts) and variations in flow rate (4 and 6 lpm) are employed. The results of this study obtained the optimum conditions obtained at 24 volt voltage and 4 lpm flow rate with decrease of Fe by 89% from 2,909 mg/L to 0,322 mg/L and Mn equal to 92% from 0,232 m /L to 0,019 mg/L. Keywords: peat water, electrocoagulation, flow rate, continuous, voltage
Pembuatan Bio Oil Dari Kayu Cemara Laut (Causarina Equisetifolia L) Dengan Teknologi Pirolisis Menggunakan Katalis Ni/NZA Rahmansyah Rahmansyah; Syaiful Bahri; Amun Amri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The fundamental problem of national energy today is the tendency of fossil energy consumption increasing, which is not offset by the availability of fossil energy itself. So that the necessary strategic steps to face the energy challenge in the future with the development of renewable energy. One of them by converting biomass into bio oil through pyrolysis technology with the aid of a catalyst. The aims of this research was to produce bio oil from casuarina wood (Causarina equisetifolia L), knowing the physical and chemical characteristics of the bio oil from casuarina wood, determine the effect of supported Ni metal on resulting yield bio oil. Pyrolysis process uses 50 grams of casuarina wood (-100+200 mesh), the catalyst Ni/NZA with metal variation (0%, 2%, 3% w/w) and the variation amount (2%, 3%, 4% w/w), silinap 500 ml, carried out at a temperature 320 0C, stirring speed of 300 rpm by flowing nitrogen gas. The highest yield obtained on 2% of uses catalyst and 3% of Ni metal of 58,058%. Characteristics of the resulting bio oil, in the form of density 1,001 gr/mL, 6,761 cSt viscosity, acid number 17,760 mg NaOH/gr, and the flash point 48 oC.Keywords: bio oil, Causarina equisetifolia wood, Ni/NZA catalyst, pyrolysis
Pirolisis Tandan Kosong Sawit Menjadi Bio-Oil Menggunakan Katalis Mo/NZA Firman Syah; Syaiful Bahri; Amun Amri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
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Fuel oil is a very important requirement in life. The fuel used for this comes from crude oil extracted from the ground, while fuel oil is non-renewable, so for the next few years is expected the public will experience a shortage of fuel. So, we need alternative energy instead of petroleum. Biomass can be used as bio-oil by pyrolysis. Biomass using such as empty fruit bunches oil. Empty Fruit Bunch Oil is organic waste that has the potential to be used as asubstitute fuel bioenergy, the largest waste generated by oil palm plantations. The purpose of this study is to produce bio-oil from empty fruit bunches of oil using catalysts Mo/NZA the pyrolysis process, as well as determine the effect of the ratio of the catalyst of biomass empty fruit bunches of oil to the yield of bio-oil produced from empty fruit bunches of oil and determine the characteristics of the chemical and physical properties of bio -oil produced from oil palm empty fruit bunches. In this research Empty Fruit Bunch Oil by the size of - 100+200 mesh, 50 grams, 500 ml silinap and catalyst Mo/NZA inserted into of pyrolysis reactor. This process conducted at a temperature 320oC and the stirring speed of 300 rpm operate for about 120 minutes by flowing nitrogen gas. For the optimum yields obtained at 1.5% catalyst Mo/NZA as much as 5% of biomass that is equal to 56.28%. The test results physical properties obtained density of 1.005 g/ml, 2,296 cSt viscosity, acidity 45,373 mg NaOH /g sample and the flash point 52oC. Respectively the characterization of the chemical properties of bio - oil using Gas Chromatography - Mass Spectroscopy (GC - MS) obtained some dominant chemical components such as:: (Pentane, 2,2,4,4-tetramethyl-), (1-Pentene, 2.4 , 4-trimethyl-), (Cyclohexane, 1-bromo-4-methyl), (Hexane, 2,2-dimethyl-), (Pentane, 2,4- dimethyl-).Keywords: bio-oil, biomass, catalyst mo / NZA, oil palm empty fruit bunches
Co-Authors ', B. Isyandi ' -, Sunarno Abd. Mukti, Abd. Abd. Rasyid Syamsuri Abid, Hussein Rasool Abu Bakar Adam Fadillah Ade Evi Fatimah Adelina Samosir Adita Sukma Ramadhania Afina, Zahira Afria Anggreini Afrielyanda H Agung Abadi Kiswandono Agus Faisal Asyha Ahmad Fadli Ahmad Fuad Ahmadi, Peni Ainol Yaqin, Ainol Ajmal, Muhammad Alhajj, Irfan Qowwiyul Aziz Alhamid, Ipa Fatma Almasdi Syahza Altarawneh, Mohammednoor Aman aman Ambarwati, Yuli Amilia Linggawati Amini Amini Amiruddin Amiruddin Amun Amri Andari , AA Andi Mulya Adha Andi Setiawan ANDI WIJAYA Anggreini, Winsa Septi Anisa, Lia Rizqi Nur Anna Apryana Annisa, Devi Nur Annisa, Eka Dini Antania, Livia Anwar Sumianto Aprilia, Tika Dwi Arai, Masayoshi Arbhy Indera Ikhwansyah Ari Aditia Sukma Ari Sandhyavitri Aria Gusti Ariasih, Rr. Arum Aries Saifudin Arinda, Shafira Aprilla Aritonang, Muhibbah Asad, Muhammad Mujtaba Asman, Pendi Aspita Laila Aulia Rahman Aura Dhayang Fiarizky Ayumi, Eksa Azhar, Muhammad Rizwan Aziz, Melly Pusvita Baharudin Baharudin Baryanto Berghuis, Nila Tanyela Bernard Isyandi Brilliant Asmit Bunga Fitriani Gumadita Bustamam, Nurbaity Chairul Chairul Chairul Chairul Chartady, Rachmad Damanik, Khairunnisa Dani Ali, Nurhalim Daud, Attaillah Dedi Afandi Dedy Hidayatullah Alarifin, Dedy Hidayatullah Desak Made Yoniartini Desi Heltina Dhani Nur Miftahudin Dian Agustin Djaimi Bakce Dzaljad, Rifma Ghulam Edwidya Ocktaviani Armay Edy Saputra Edy Saputra Effendi, Mardian Effendy, Sjahril Ekadian Lestari Simatupang Eko Prihandono Ella Awaltanova Elvi Yenie, Elvi Elvianto Dwi Daryono Emi Tipuk Lestari *, Emi Tipuk Lestari Erlisa Yanuari Putri Ermiyati Erniwati Erniwati Fabryza, Dhina Fadillah, Ryan Faizal, Doddy Fajar Restuhadi Fathiyah Zulfahni Febrian, Ramadhoni Feby Pratama Nugraha Feni Nopriza Figna, Harry Pratama Fikri, Muhammad Fathan Fiqna, Harry Pratama Firman syah Firmansyah, Muhammad Yusuf Fistiyanti, Davinta Fitra Marsela Fitriani Fitriani Fitriani, Nurdiana Friska Octavia Rosa, Friska Octavia Ganjar Andhulangi Genardus Oktavri Sijabat Habibie, R. Fikry Nanda Hade Karimata Hadyan Sartoni Hafidz Nifa, Muhamad Hajar, Muhammad Nurul Hambali, Ach Hamdali, Hamdali Hammad, Hammad Harahap, Ahmad Indra Harahap, Dosma Gabena Hardiansyah Hardiyanto, Candra Hari Setiono, Hari Hartono, Arif Haryo Satriya Oktaviano HASANAH, IDA FADIRATUL Hasnul Bustaman Hasrudy Tanjung, Hasrudy Hedri Yanti Hery Widijanto Hesty Rodlotu Yula Hetti Zuliani, Hetti Husna, Zakiyatul Hutahaean, Agung Mangalambok I KADEK ADHI DWIPAYANA . I Nengah Suandi I Wayan Suastra Ibnu Oktariza Ida Bagus Putu Arnyana Idi Warsah Idral Amri Ilim, Ilim Ilmi, Assyifa Aini Ilmiddaviq, M. Bahril Inget Yester Yunanda Irawan, Nopi Irdoni Irdoni Irlani, Intan Irnaliah, Irnaliah Irwan Fathurrochman, Irwan Irwan Irwan Isma Swadjaja Isnaini, Nurdiana Fitri Iswadi Idris James Becker Jefriadi Jefriadi Jiang, Zhong Tao John Hendri Julian, Risma Juliasih, Ni Luh G. R. Juliasih, Ni Luh Gede Ratna Jumira Warlizasusi Karim, Ahmad Fauzun Karina Octaria Putri Keisya, Nurul Khairat Khairat Khairat, Khairat Khairul, Anapuja Khairunnisa, Zhafira Amriyatti Kharismatunnisaa, Fiona Khoiriyah, Alfiatul Kholil, Moh. Kinanti Kinanti, Kinanti Kiswandono, Agung A. Laila Kusmiati Lailatul Qomariyah, Lailatul Lalu Erwan Husnan, Lalu Erwan Larasaty, Anisya Lestari, Miranti Tri Lianingsih, Firli Dwi Lisna Efiyanti Lubis, Afandi Husin Amin Syahrul Lutfiah, Rosyidatul M Arfi Adharyandy Firman M. Nasor, M. Makkah Ramadhan Putra Rizal Margrety, Betty Margunaji, Agus Maya Sista, Eliya Meliagustin, Adilla Mhd. Reza Pahlepi Miftahudin, Dhani Nur Miran, Hussein A. Miswaty, Miswaty Mita Rilyanti Mitri Irianti Mizna Sabilla Mohammad Muhibbin Muhammad Amin Muhammad Azlin , Dico Muhammad Disro Muhammad Imam Nugraha Muhammad Isa Alamsyahbana Muhammad Ismet muhammad rizky, muhammad Muhammad Sulthon Siregar Muhammad Zulfikar Adha Muhdarina Muhdarina . Muhdarina Muhdarina Muhtadi Muhtadi MUIS FAUZI RAMBE Mukti, Lailatul Latifa Mulyadi Mulyadi Mulyono Mulyono MURNI YANTO Musbar, Al Swendo Nabila, Abelia Najmuddin MA, Najmuddin nasir, muh Nasution, Jamilah Aini Nia Meisa Wulandari Nifa Abdillah, Muhamad Hafidz Norlena Notiragayu, Notiragayu Nova Dwi Safitir Nur Ainiyah Nurbaity, Nurbaity Nurfaradina, Zaskia Ayu Nurfatihayati Nurhaeni Nurhaeni Nurhasanah Nurhasanah Nurhasanah Nurhasanah Nurhayati Nurhayati Nurhayati, Nurhayati Nurkholimah, Siti Nurlis Nurlis Nurmarita, Nurmarita Oci Khairani Oktarina, Rasmi Zakiah Oktaviyana, Amiliya Pambudi, Naufal Prawiranegara, Barata Aditya Prayoga, Mohammad Dicky Puji Prasetyo, Angga Puji, Lela Kania Rahsa Purba, Doni El Rezen Purwadi, Ofik Taupik Putri Azizah Putri, Karina Octaria Putri, Nazla Syafrina Qudus, Hardoko Insan R. Supriyanto R.Y, Silvia Rachma, N. Rahmadani, Natasya Suci Rahmah, Yulia Rahman, M. Mahbubur Rahman, Waqi’ Rahmansyah Rahmansyah Rahmiyati, Evi Rais , Wendi Raja Valti Mhd Siregar Rajib Azri Ramin, Moh. Ranum Anggun Sari, Ranum Anggun Ratna Dian Armalita Raudhatul Jannah Raudloh, St. Regina Gita Riani Dio Renia Navivin Revita Sari Riady, Yasir Riansyah, Muhammad Ridho Fahrozi Ridwan Siskandar Rifa’I , Ahmad Rinawati Rinawati Rinawati Rinawati Rinny Jelita Rino Hasanatul Isra Risca Dwiaryanti, Risca Rizal, Makkah Ramadhan Putra Rizka Aulia Hardi, Rizka Aulia RM Riadi Rofiqi, Ahmad Romie Jhonnerie Rosalina, Fira Rosita, Dara Ryan Dhika Priyatna S Siswanto Sabrina, R Salim Aktar Salim, Sulaiman Samawi, Oscar Raihan Saputra, Adika Saputra, Yourdan SAPUTRI, KENI APRILIA Saputri, Rafhita Ika Sari Rahma Yanti Sari, Linda Nevia Sari, Silvya Reza Novita Sarma, Deki Savitri Larasati Setiadi, Fydel Setianingsih, Ayu Setiawan, Fendi Shabira, Qonita Shahib, Abdul Sheiscatamya, Vezhia Shubhi, Muhammad Silvi Puteri Anggraini Silvia R.Y Siti Nurbaya Siti Nurul Khotimah siti rahmah Sofi Dwi Octavia Ningtiyas Sri Waluyo Subangkit Julio Jaya Sucipto Sufi, Sutan Badarudin Sugeng, Santoso Sugiyanto - Sukiman Hernanda Sukitman, Tri Sulistyawati Sulistyawati Sulton Sholehuddin, Sulton Sunarno Sunarno - Sunarno Sunarno Sunarno Sunarno Suratman Suratman Surya Romadani Sutopo Hadi Sutrisno, Sutrisno Suwanto Suwanto Syaddad, VirzqiZulviqar Syafrial Nur Syamsu Herman Syamsuri T. Ariful Amri Tahir, Tahir Tanjung, Muhammad Hafiz Taufik Kharnofa Tirsya, Riana Tresia Monika Natalia Sinaga Tri Okta Ratnaningtyas Utama, Panca Setia WAWAN ABDULLAH SETIAWAN, WAWAN ABDULLAH Wega Trisunaryanti Widiarto, Sonny Widiarto, Sony Wisrayetti Wisrayetti Wisrayetti, Wisrayetti Wulandari, Ika Rizki Wulandari, Revika Yanto, Murni Yatim Lailun Ni’mah Yelmida Azis Yeni Puji Astuti Yeni Rizki Yenni Octavia Yopalim Zanstra Yuli Ambarwati Yulianti Yulianti Yuliati Eka Putri Yuliatmi Yuliatmi Yumna, Nada Ibtihal Yusnimar Sahan Yusuf Yusuf Zainuddin, Zainuddin Zetria Pujiana Zipora Sembiring Zuchra Helwani Zuchra Helwani, Zuchra