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All Journal Natural Science: Journal of Science and Technology CHEMISTRY PROGRESS Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Kesehatan Masyarakat Andalas (Andalas Journal of Public Health) al-Kimiya Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Riset Kimia Konversi Akta Kimia Indonesia Unri Conference Series: Community Engagement Dinamika Lingkungan Indonesia Jurnal Rekayasa Kimia & Lingkungan
SYAIFUL BAHRI
Riau University
Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health

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Pirolisis Kulit Kayu Pinus (Pinus Merkussi) Menjadi Bio-Oil Menggunakan Katalis NiMo/NZA Sari, Ranum Anggun; Bahri, Syaiful; 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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Abstract

Availability of fosil fuel cell that is increasingly limited has already global issue in the world, especially Indonesia. This has an impact onrising extraction costs and selling prices to the public. In addition, the emissions produced by during fossil fuels had a devastating impact on the environment. One of the alternative energy to reduce fossil fuel is bio-oil produced from biomass through pyrolysis technology. Pine bark isa potensial biomass to be used as bio-oil material. Until now, this pine bark only regarded as wastes that pollute the environment. Thought pine bark can be used as a source of fuel, because the pine bark has a potential source of energy. The purpose of this study is to know the effect of the ratio impregnated metal of Ni and Mo on NZA catalyst and the ratio amount of catalyst on the yield of bio-oil produced, knowing the value of density, viscosity, acidity and a flash point of bio-oil as well as determine the chemical components in bio-oil by GC-MS method. Pyrolysis bio-oil begins to process the biomass size reduction (-60+80 mesh) and natural zeolite (-100+200 mesh). Metal Ni and Mo was impregnated into the zeolit to form a bimetallic catalyst NiMo/NZA. Then the catalyst was activated by calcination stage, oxidation and reduction pyrolysis using pine bark as much as 50 grams along with 500 ml silinap with variations developing of metal Ni and Mo to NZA without metal (0%), 1%, 2% and 3% b/b and weight variation of NiMo catalyst/NZA 3%, 6% and 9% of the biomass with a stirring speed of 300 rpm and temperature of 320 oC for 120 min. The highest yield of bio-oil obtained by the use of 3% catalyst NiMo/NZA with 6% of the amount of catalyst which is equal to 77,23%. From physic analysis conducted on bio-oil werw obtained: the density is 0,79 g/ml, the viscosity is 9,87 cSt, the acidity is 5,13 mg NaOH/g sample and the flash point 52 oC. Five (5) the dominant compound results of chemical analysis by GC-MS of the bio-oil from pine bark using 3% catalyst of NiMo/NZA with 6% the amount of catalyst: 2-Pentene (21,8%), Pentane (13,71%), 2-Hexene (8,98%), 1-Propene (7,08%) and 1-Pentene (5,03%).Keywords: bio-oil, catalyst NiMo/NZA and pyrolysis.
FAKTOR DETERMINAN INTENSI PERILAKU PENGELOLAAN SAMPAH BERKELANJUTAN PADA SISWA SEKOLAH DASAR Aria Gusti; Bernard Isyandi; Syaiful Bahri; Dedi Afandi
Jurnal Kesehatan Masyarakat Andalas Vol 9, No 2 (2015): Jurnal Kesehatan Masyarakat Andalas
Publisher : Faculty of Public Health, Andalas University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24893/jkma.v9i2.138

Abstract

Penelitian ini meneliti intensi perilaku pengelolaan sampah berkelanjutan pada siswa sekolah dasar menggunakan kerangka Teori Perilaku Berencana. Tujuan penelitian ini adalah untuk mengetahui faktor-faktor yang berhubungan dengan intensi perilaku pengelolaan sampah berkelanjutan. Populasi dan sampel dalam penelitian ini adalah siswa sekolah dasar di Kota Padang, Sumatera Barat. Data yang dikumpulkan untuk penelitian ini dianalisis menggunakan Structural Equation Modelling (SEM). Hasil penelitian ini menyatakan bahwa  pengetahuan tentang  pengelolaan  sampah  berkelanjutan memiliki hubungan yang signifikan dengan sikap terhadap pengelolaan sampah berkelanjutan. Sikap terhadap pengelolaan sampah berkelanjutan,  norma subjektif  dan perceived behavioral control (PBC)  juga  memiliki  hubungan yang signifikan dengan intensi perilaku pengelolaan sampah berkelanjutan. Studi ini telah membantu dalam memahami kekuatan relatif dari faktor determinan intensi perilaku pengelolaan sampah berkelanjutan. Kekuatan hubungan yang paling besar adalah antara PBC dengan intensi, diikuti oleh hubungan antara norma subjektif dengan intensi, dan yang paling lemah adalah hubungan antara sikap dengan intensi. Temuan ini memiliki implikasi penting bagi pihak sekolah serta bagi para pembuat kebijakan.
Penyiapan Arang Aktif Pelepah Kelapa Sawit sebagai Adsorben Asam Lemak Bebas dari CPO (Crude Palm Oil) Muhdarina Muhdarina; Nurhayati Nurhayati; Mhd. Reza Pahlepi; Zetria Pujiana; Syaiful Bahri
al Kimiya: Jurnal Ilmu Kimia dan Terapan Vol 7, No 1 (2020): al Kimiya: Jurnal Ilmu Kimia dan Terapan
Publisher : Department of Chemistry, Faculty of Science and Technology, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/ak.v7i1.6497

Abstract

Limbah pelepah sawit (LPS) dihasilkan secara periodik dari perkebunan kelapa sawit. Keberadaan LPS ini berpeluang digunakan sebagai bahan baku adsorben. LPS telah diubah menjadi arang aktif pelepah sawit (APS) melalui langkah karbonisasi pada temperatur 600oC selama waktu bervariasi (30, 60, dan 120 menit). APS yang diperoleh dilakukan analisis kadar air, abu dan zat menguap. APS juga dikarakterisasi dengan FTIR untuk menentukan gugus fungsi, keasaman permukaan dengan tirasi Bhoem serta SEM untuk mendeteksi morfologi permukaan. Kemampuan APS untuk menjerap asam lemak bebas (ALB) dari CPO dipelajari pada waktu adsorpsi dan dosis adsorben yang bervariasi. Hasil penelitian menunjukkan bahwa semua APS memiliki kadar air, abu dan zat menguap yang sangat rendah, sehingga memenuhi SNI 06-3730-1995. Gugus fungsi yang dimiliki APS di antaranya C-O, O-H, C-O-C, C=O, C-C (aromatik) dan C-H. APS mengandung 14 mmolg-1 total asam dengan mayoritas asam fenolat sebanyak 12,3 mmolg-1, sisanya sebagai asam karboksilat dan laktonat. Morfologi permukaan arang aktif membentuk rongga-rongga dengan ukuran yang semakin besar dan tersusun rapat seiring dengan lamanya waktu karbonisasi. Hasil uji adsorpsi ALB yang paling baik ditunjukkan oleh APS60 yang mampu menjerap hingga 77,8% ALB pada waktu adsorpsi 60 menit dan 1 g  dosis adsorben. Dengan demikian, LPS layak dikembangkan menjadi arang aktif dan digunakan sebagai adsorben untuk mengurangi kadar asam lemak bebas dalam CPO.
PENGARUH TEMPERATUR DAN KONSENTRASI KATALIS PADA CRACKING CANGKANG SAWIT MENJADI CRUDE BIO-FUEL Sunarno -; Silvia R.Y; Syaiful Bahri
Jurnal Riset Kimia Vol. 5 No. 1 (2011): September
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v5i1.185

Abstract

 ABSTRACT One of solid waste that produced by palm industry is palm oil shell. This waste abundant in Riau about 700.5 ton/day. The shell compositions are cellulosa, hemicellulosa, and lignine. That compounds can be cracked into crude biofuel in slurry reactor with NiMo/ZSM-5 catalyst. The objective of research to study the influence of cracking temperature (300, 310, 320, 330 0C) and concentration of catalyst (0.5; 1.5; 2.5; 3.5%) to yield of crude biofuel and to determine physical and chemical properties. Cracking process used 50 gram palm oil shell size -40+60 mesh, 500 mL silinap and rotation speed of mixing 300 rpm. The maximum yield was obtained 68.6% at temperature 330 0C and catalyst concentration NiMo/ZSM-5 2.5%. The physical properties of crude biofuel were calorimetric value (43.84 MJ/kg), density (1.01 g/mL), viscocity (13.27cSt), acid number (76.11 g NaOH/g sample) and flash point (64 0C). The GC-MS analysis result indicated dominant compounds in crude biofuel were acetic acid (33.94%), phenol (31.71%), furancarboxaldehide (7.78%) and methanol (4.93%). Key words : Catalyst, crude biofuel, palm oil shell 
PYROLYSIS OF CASSAVA BAGASSE INTO BIO-OIL USING Ni/NZA CATALYSTS Jefriadi Jefriadi; Syaiful Bahri; Sunarno Sunarno; Rinny Jelita
Konversi Vol 8, No 2 (2019): Oktober 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v8i2.7194

Abstract

Cassava bagasse is a solid tapioca industry waste that can be used as an energy source. In this study, cassava bagasse was pyrolyzed to produce bio-oil and studied the effect of Ni/NZA catalysts on yield, heating value and distribution of bio-oil products. The making of Ni/NZA catalyst starts with the process of activating natural zeolite to produce natural zeolite activated (NZA). Furthermore, impregnation of Ni metals in NZA with Ni levels 1, 2 and 3% w/w (Ni/NZA). The next step is calcination, oxidation and reduction. Cassava is peeled, shredded, washed, filtered and dried and then mashed and screened with a 60 and 80 mesh sieve to obtain cassava bagasse biomass with a size of -60+80 mesh. 50 grams of cassava bagasse with 500 ml silinap and 1.5 gram Ni/NZA catalyst are pyrolyzed at 320oC with nitrogen gas flow of 80 mL/min. Bio-oil products are analyzed by the heating value and distribution of the products. The yield of bio-oil obtained on pyrolysis using 0% Ni/NZA was 54.27% and pyrolysis using 2% Ni/NZA obtained the highest yield of 61.87%. The highest bio-oil heating value was obtained in pyrolysis using 0% Ni/NZA which is 46.78 MJ/kg and lower with increasing Ni levels in NZA. The results of GC-MS analysis of the bio-oil products showed that the use of 1% Ni/NZA catalyst significantly increased the percent area of several components i.e. 2,4,4-trimethy-l-1-Pentene, 2,5-dimethyl-2,4-Hexadiene, and 2,4,4-trimethyl-2-Pentene and decreases the percent area of some other components i.e. 1-bromo-3-methyl-Cyclohexane, 2-methyl-1-Propene,tetramer, 1-(1,1-dimethylethoxy)-3-methyl-Cyclohexene and 3-(3,3-dimethylbutyl)-Cyclohexanone.
Fermentasi Nira Nipah Menjadi Bioetanol Menggunakan Teknik Immobilisasi Sel Saccharomyces Cerevisiae Ella Awaltanova; Syaiful Bahri; Chairul Chairul
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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Abstract

The high dependence of fuel resource such as oil, coal, and gas will influence depletion of fossil resources (oil, natural gas, and coal). Therefore, it is important to study conversion of biomass to bioethanol as renewable energy to overcome dependence on fossil fuels. Production of bioethanol using free cell in fermentation and it several disadvantages in separation of yeast cells and biethanol concentration. This research was conducted the fermentation of nypa sap with immobilization cell, using tween 80 and ergosterol as suplement to obtain high concentration of bioethanol as well as avoid osmosis in cells . This work is aimed to study of bioethanol production from nypa sap using immobilized cells, to determine effect of cell immobilization weight and fermentation time to bioethanol, and to obtain maximum conditions on the process. Fermentation was conducted in 2L fermentor having variations of fermentation time such as 24, 36, 48, 60, 72, 84, and 96 hours respectively and cell immobilization weight e.g. 5 %w/v, 10 %w/v, 15 %w/v, and 20 %w/v respectively, and also addition of tween 80 of 0,2% v/v and ergosterol of 0,5 g/l. The concentration of bioethanol was increased with increases of immobilized cells. Maximum conditions of bioethanol production from nypa sap using immobilized cells are shown having cell immobilization weight of 20% w/v and fermentation hours 96th about 17,574 % v/v equal with 138,708 mg/ml. Keywords : bioethanol, ergosterol, immobilized cells, nypa, sacharomyces cereviceae, tween 80
Pirolisis Kayu Ketapang (Terminalia Catappal) Menjadi Bio-Oil Menggunakan Katalis NiMo/Lempung Afria Anggreini; 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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Abstract

Recently, the avaibility of petroleum fuels is became limited. It is because the petroleum fuels was not balanced with the community consumption to petroleum fuels is very high. To overcome these problems needed alternative energy sources is the use of renewable biomass into bio-oil. Biooil is produced from biomass through pyrolysis. The purpose of this reseacrh is to produce biooil from ketapang wood, determine the effect of the impregnation percentage of NiMo metal, determine the effect of the catalyst weight, the physical and chemical characteristics of bio-oil. Pyrolysis was using 50 grams ketapang wood, 500 ml silinap and NiMo/Lempung catalyst withvariations of the impregnation percentage of NiMo metal 0%, 1%, 2%, 3% and the variation weight of catalyst NiMo/Lempung 3%, 4% and 5% of the biomass with a stirring speed of 300 rpm and a temperature of 320ºC for 120 minutes. In this research, the highest yield on the variation of the impregnation percentage of metal 1% and weight of catalyst 5% of the biomass amounted to 77,616%. Characteristics of bio-oil obtained were density 0,924 gr/ml, viscosity 2,510 cSt, acid number 76,781 mg NaOH/gr sample, and the flash point 500C. The results of GC-MS analysis, thedominant chemical components in the bio-oil were cyclohexanone (5,53%); heptadecane (4,17%); 1-propene, 2-methyl-,trimer (3,18%); 1-tetradecene (CAS) n-tetradec-1-ene (2,43%) serta octadecane (CAS) n-octadecane (2,21%).Keywords : Bio-oil, catalyst NiMo/Lempung, ketapang wood
Pembuatan Biodiesel Dari Minyak Kelapa Dengan Katalis H-Zeolit Melalui Proses Metanolisis Feni Nopriza; Syaiful Bahri; Yusnimar Yusnimar
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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Abstract

Biodiesel is an alternative fuel from renewable raw materials. One of the raw material can be used to make biodiesel is coconut oil. This research aims is determine the maximum biodiesel yield by using varying amounts of H-zeolite catalyst and methanol mole ratios of coconut oil through a process methanolysis. The independent variables used in this study is the mole ratio of methanol-oil 3: 1; 6: 1; 8: 1 9: 1 and catalyst concentration of 1%, 2%, 3% respectively. Temperature of 60°C, 1.5 hours and stirrer speed is keep constant. The yield of biodiesel produced in this study reached 84.78% at a concentration of 2% catalyst mole ratio of methanol-oil 6: 1. The density of biodieselproduced at the maximum yield was 880.90 kg / m3, kinematic viscosity of 4.59 mm2 / s, the flashpoint of 110oC, the water content of 0.048% v, and the acid number of 0.65 mg KOH / g, respectively in addition, analysis of the chemical compositions of biodiesel is used GC - MS. All the characteristics of the physical properties of biodiesel produced have met the standard range contained in the SNI 04-7182-2006.Keywords: biodiesel, homogeneous catalysts, methanolyisis, coconut oil.
Pengaruh Berat Katalis Dan Perlakuan Aktivasi Katalis Lempung Terhadap Pembuatan Biodiesel Dari Minyak Nyamplung Fathiyah Zulfahni; Syaiful Bahri; Wisrayetti Wisrayetti
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study aims to produce biodiesel from callophylum oil by using heterogeneous clay catalyst from Palas village. Characteristic of clay catalyst for biodiesel synthesis that will be analyzed in this research such as Si/Al ratio, surface area and pore size. Clay catalyst is made by grinding the clay until its size -100 +200 mesh. Clay was activated using H2SO4 solution with variation of the concentration 0,5 N, 1 N and 2 N. The mixture is filtered using a vacuum pump and calcined at 300 ºC for 3 hours. The producing of biodiesel through two stages: esterification and transesterification. In transesterification, clay catalyst is used having variation of catalyst weight was 0,1%, 0,5% and 1%, sample of oil 50 gram and ratio oil and methanol 1:9. The reaction lasted for 60 minutes at 60 ºC. The largest biodiesel yield on the use of 1% clay catalyst with variation of acid 1 N i.e. 89,50%. Characteristics of catalyst has a high Si/Al and a surface area ratio respectively 25,74 and 37,641 m2/gr, and pores are scattered on the surface. Biodiesel produced in accordance with predefined standards (SNI 7128:2015).Keywords: biodiesel, callophylum oil, Palas clay, transesterification.
Pembuatan Biodiesel Dari Minyak Kapuk Menggunakan Katalis Lempung : Studi Regenerasi Katalis Dalam Proses Produksi Genardus Oktavri Sijabat; Syaiful Bahri; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Petroleum oil still serves as a primary source of energy and national fuel. Oil reserves in Indonesia are depleting so substitution of fuel that derived from petroleum have to be sought. Recent years, a lot of research has done, whose purpose to find a fuel that can be an alternative source one of that is biodiesel. Raw material for making biodiesel can be from animal fat or vegetable oil. One type of vegetable oil that can be used as a raw material source of energy is kapok wood. This research is aimed to make biodiesel from cotton oil, to study factors which influences production, such as acid-based activated catalyst, the regeneration catalyst, and to determine the physical and chemical properties of biodiesel. The transesterification process was done on a mole ratio of oil: methanol 1: 9, oil mass 50 grams, the weight of the catalyst 1%-wt, temperature of 60°C during 90 minutes, the activation of clay catalysts are in acids and bases, and then recycle and regeneration of catalyst. This study given the biodiesel result having the largest yield of alkaline activation of the catalyst as much as 93.1%. Characterization of physical properties of biodiesel have a density 871 kg/m3, kinematic viscosity 3.5 mm2/s, acid number 0.37 mg KOH/g sample, and the flash point 210oC respectively. The catalyst regeneration cannot restore 100% reactivity of catalyst.Keywords: biodiesel, clay, recycle, regeneration, transesterification
Co-Authors ', B. Isyandi ' -, Sunarno Abd. Rasyid Syamsuri Adam Fadillah Adelina Samosir Adita Sukma Ramadhania Afria Anggreini Afrielyanda H Agung Abadi Kiswandono Almasdi Syahza Aman aman Amilia Linggawati Amun Amri Andi Mulya Adha Anna Apryana Anwar Sumianto Arbhy Indera Ikhwansyah Ari Aditia Sukma Aria Gusti Aulia Rahman Aura Dhayang Fiarizky Bernard Isyandi Brilliant Asmit Bunga Fitriani Gumadita Chairul Chairul Chairul Chairul Dedi Afandi Dedi Afandi Dhani Nur Miftahudin Dian Agustin Djaimi Bakce Edwidya Ocktaviani Armay Edy Saputra Ekadian Lestari Simatupang Ella Awaltanova Elvi Yenie, Elvi Erlisa Yanuari Putri Fathiyah Zulfahni Febrian, Ramadhoni Feby Pratama Nugraha Feni Nopriza Firman syah Fistiyanti, Davinta Fitriani Fitriani Ganjar Andhulangi Genardus Oktavri Sijabat Hade Karimata Hadyan Sartoni Haryo Satriya Oktaviano Hasnul Bustaman Hedri Yanti Hesty Rodlotu Yula Husna, Zakiyatul Ibnu Oktariza Idral Amri Inget Yester Yunanda Irdoni Irdoni Irnaliah, Irnaliah Irwan Irwan Iswadi Idris James Becker Jefriadi Jefriadi Karina Octaria Putri Khairat Khairat Khairat, Khairat Khairul, Anapuja Laila Kusmiati Lisna Efiyanti M Arfi Adharyandy Firman Meliagustin, Adilla Mhd. Reza Pahlepi Miftahudin, Dhani Nur Mita Rilyanti Mitri Irianti Muhammad Disro Muhammad Ismet muhammad rizky, muhammad Muhammad Sulthon Siregar Muhdarina . Muhdarina Muhdarina Musbar, Al Swendo Nia Meisa Wulandari Nova Dwi Safitir Nurhaeni Nurhaeni Nurhasanah Nurhasanah Nurhayati Nurhayati Nurhayati, Nurhayati Nurlis Nurlis Oci Khairani Putri Azizah Putri, Karina Octaria R. Supriyanto R.Y, Silvia Rahmah, Yulia Rahmansyah Rahmansyah Raja Valti Mhd Siregar Rajib Azri Ranum Anggun Sari, Ranum Anggun Ratna Dian Armalita Regina Gita Riani Dio Renia Navivin Ridho Fahrozi Rinawati Rinawati Rinny Jelita Rino Hasanatul Isra Rizka Aulia Hardi, Rizka Aulia RM Riadi Romie Zulfadli Saputra, Adika Sari Rahma Yanti Savitri Larasati Setiadi, Fydel Setianingsih, Ayu Silvi Puteri Anggraini Silvia R.Y siti rahmah Subangkit Julio Jaya Sukiman Hernanda Sunarno - Sunarno Sunarno Sunaro Sunarno Surya Romadani Syamsu Herman T. Ariful Amri Taufik Kharnofa Tresia Monika Natalia Sinaga Utama, Panca Setia Wega Trisunaryanti Wisrayetti Wisrayetti Wisrayetti, Wisrayetti Yatim Lailun Ni’mah Yelmida Azis Yeni Rizki Yenni Octavia Yopalim Zanstra Yuli Ambarwati Yulianti Yulianti Yuliati Eka Putri Yuliatmi Yuliatmi Yumna, Nada Ibtihal Yusnimar Sahan Yusnimar Yusnimar Yusnimar Yusnimar, Yusnimar Zetria Pujiana Zipora Sembiring Zuchra Helwani Zuchra Helwani, Zuchra