Article Per Year (5 Year)
p-Index From 2021 - 2026
5.454
P-Index
This Author published in this journals
All Journal Reaktor Jurnal Sains dan Teknologi Jurnal Teknik Kimia USU Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Engineering and Technological Sciences JURNAL INTEGRASI PROSES Konversi KURVATEK Jurnal UNITEK Narra J Journal of Bioprocess Chemical and Environmental Engineering Science Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) Jurnal Teknik Kimia USU Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Jurnal Offshore: Oil, Production Facilities, and Renewable Energy LAVOISIER: Chemistry Education Journal Heca Journal of Applied Sciences Malacca Pharmaceutics Leuser Journal of Environmental Studies Infolitika Journal of Data Science LAVOISIER: Chemistry Education Journal JURNAL REKAYASA KIMIA & LINGKUNGAN
Zuchra Helwani
Universitas Riau
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Veterinary Other

Published : 143 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 143 Documents
Search

 8   9   10   11   12 
Proses Densifikasi Pelepah Sawit Menggunakan Gliserol Sebagai Filler Menjadi Bahan Bakar Padat Jimmy Anderson; Zuchra Helwani; Komalasari Komalasari
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

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

Abstract

Palm frond has been utilized only for raw source of animal feed, compost and organic fertilizer in plantation area. Oil palm fronds has calorific value of 15,184.05 kJ/kg with a density of 0.1383 g/cm3. Calorific value can be enhanced by densification. By biomass densification aims to increase density and decrease handling issue such as storage and transportation. The aims of this research is to produce solid fuel from palm fronds by densification process, to determine the characteristics of the product and to know the effect of gliserol as filler composition and pressing pressure in the processing by densification and also to know density, calorific value and proximate of product. The composition of gliserol filler used were 15%, 25% and 35%. Pressing pressure used were 50, 75 and 100 bar. The particle size used were < 850 μm. The highest density of the product is 1.07475 gr/cm3 was obtained at gliserol filler composition 35% and pressure 100 bar. The highest calorific value of the product is 16,928.12 kJ/kg was obtained at gliserol filler composition 35% filler and pressure 100 bar. The most affecting factor to caloric value and density are pressing pressure and filler composition.Keywords: calorific value, densification, density, filler, pressing pressure, palm fronds.
Karakterisasi Material Kemasan Pulp Cetak Tanpa Perekat Dari Pulp Batang Jagung Muhammad Rifki Aulia Rahman; Warman Fatra; Zuchra Helwani
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

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

Abstract

Molded pulp is an alternative packaging which has renewable and biodegradable properties. The use of molded pulp as packaging material still constrained due to the specific data that describes the characteristics of molded pulp has not widely publicized yet. This study was conducted to identify the characteristics of molded pulp as an alternative packaging material. Cornstalk was selected as raw materials which has abundant availabilty. Molded pulp packaging was manufactured by thermoformed methods. The thermoset nature of lignin in cornstalks would give possibilties in manufacture of molded pulp without using adhesive. The results showed the mechanical characteristics of binderless molded pulp from cornstalk pulp which have tensile index from 17.78 to 35.78 Nm/g, tear index from 9,25 to 26,09 mN.m2/g, and burst index from 0.901 to 1.5 kPa.m2/g. The effects of dependent variables on the mechanical properties of molded pulp were studied by statistical modelling using a polynomial second order. The empirical models were deduced to satisfactorily fit experimental data with the values of independent variables and allow to quantifiying the effects of each variables. The most influential factor on tensile and burst index of molded pulp was temperature of processing. Whereas, the processing pressure has greater influence on tear index of molded pulp.Keywords:material characterization; binderless, molded pulp; mechanical properties; statistical modelling.
Preparasi Pelepah Sawit Dengan Asam Oksalat Dan Pengaruhnya Terhadap Sifat Dan Morfologi Wood Plastic Composite Andreas Sahat Parsaulian; Bahruddin Bahruddin; Zuchra Helwani
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

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

Abstract

Reduced forest makes the availability of woods as the construction material on the wane. Oil palm frond has a potential to use to decrease utilization of woods directly. The main objective of this study was to evaluate the effect of oxalic acid and thermal pretreatment to morphology and properties of oil palm frond based wood plastic composite (WPC). The temperature of pretreatment were varied at 100oC, 120oC, and 140oC with submersion time 15 minutes. The mass ratio of oil palm frond sized 100 – 200 mesh as filler and polypropylene as a matrix is 30:70. 2% paraffin as plasticizer and 5% maleic anhydride polypropylene as compatibilizer were use as an additive. WPC samples were prepared using internal mixer Labo Plastomill at temperature 180oC and rotor speed 80 rpm. Testing experiments were prepared to mechanical testing consist of tensile and flexural strength and physical testing consist of density, water absorption, and swelling thickness. Scanning Electron Microscopy was used as a morphology testing. The result showed that oxalic acid pretreatment significantly gives an effect to mechanical and physical properties. The best WPC in this study was treated in the 120oC using oxalic acid based on tensile strength with 23.785 MPa, flexural strength 43.2 MPa, density 0.975 gr/cm3, water absorption 1.44%, and swelling thickness 0.17%.Keywords: pretreatment, oil palm frond, wood plastic composite
Sintesis Biodiesel Dari Minyak Nyamplung Menggunakan Katalis Geopolimer: Pengaruh Suhu Reaksi Transesterifikasi Dan Rasio Mol Minyak Terhadap Metanol Abdullah Syafi’i; Edy Saputra; Zuchra Helwani
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Petroleum reserves in Indonesia are increasingly depleted, requiring the use of alternative energy that is environmentally friendly and renewable like biodiesel. Biodiesel can be made by transesterification process of vegetable oils. Process of making biodiesel commonly use homogeneous catalyst which has the disadvantage the formation of by products such as complexity of the separation of catalyst. Therefore, in this study biodiesel was synthesized from calophyllum inophyllum oil by using geopolymer catalyst. Geopolymer catalyst is first synthesized by reacting sodium silicate, metakaolin, NaOH, and water. Several variations of the process variables were done to assess its influence on yield of biodiesel. The variables were used consist of a dependent variables and independent variables. The dependent variables were calophyllum inophyllum oil weight of 50 grams, 3%-wt of catalyst concentration, reaction time of 120 minutes, and stirring speed of 400 rpm, while the independent variables which variation molar ratio of oil:methanol 1:6 and 1:9 and variations of temperature 55 and 65 oC. Physical characterization were done including density 871 kg/m3, kinematic viscosity 4.38 mm2/s, acid number 0.41 mg-KOH/g biodiesel and flash point 140°C respectively accordance with the standards of Indonesian biodiesel (SNI 7182:2015).Keywords: biodiesel, catalyst, calophyllum inophyllum oil, geopolymer, yield
Pembuatan Bahan Bakar Padat Dari Pelepah Sawit Menggunakan Proses Torefaksi Pada Variasi Suhu Waktu Torefaksi Rina Maryenti; Komalasari Komalasari; Zuchra Helwani
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

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

Abstract

Oil Palm Fronds can be used as alternative energy source by using torrefaction process. Oil Palm Fronds has a calorific value of 15439.39 kJ/kg. The calorific value can be increased by torrefaction. Torrefaction is a pre-treatment process of biomass into solid fuel within temperature range of 200 - 300 oC in an inert condition. This research aims to produce solid fuel from oil palm fronds and study the effect of variation in temperature and time torrefaction towards characteristic of solid fuel resulted. Torrefaction of oil palm fronds was using fixed bed horizontal reactor at temperature of 250 - 300 oC and time of 20 - 40 minutes. Product quality resulted was calorific value, mass yield, energy yield and proximate. The result obtained for calorific value in range was 18152.26 - 24060.32 kJ/kg, mass yield was 45.22 - 75.04 %, and energy yield was 70.49 - 88.23 %. Proximate analysis resulted in the form of moisture content was 3.42 - 5.44 %, ash content was 4.67 - 6.89 %, volatile content was 38.63 - 65.34 %, and fixed carbon was 24.55 - 51.06 %.Keywords: calorific value, energy yield, mass yield, oil palm fronds,torrefaction.
Pembuatan Biodiesel Dari Sawit Off-Grade Dengan Proses Dua Tahap Rahmawati Rahmawati; Zuchra Helwani; Yelmida A
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

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

Abstract

Off-grade palm oil is a source of untapped vegetable oil. Off-grade palm oil can be used as an alternative raw material for biodiesel production despite having high content Free Fatty Acid (> 5%). Plant with a capacity of 30 tones of FFB yield 7-10% off-grade palm oil or 2-3 tons per hour. The catalyst used is potassium hydroxide because it has smaller ionization energy, making it faster to form a product when used as a catalyst. This research aims to produce biodiesel from low-quality raw materials and determine the effectiveness of the process by looking at the effect of process conditions such as reaction temperature, molar ratio and catalyst concentration on the yield of biodiesel. The biodiesel making process was carried out with two stages of the reaction, esterification and transesterification reactions due to high content of free fatty acid in the raw material. Data processing in this study was analyzed by response surface methodology (RSM) using Design Expert 8.0 program. Experiment runs were determined by central composite design (CCD), which consists of three variables, namely temperature, catalyst concentration and molar ratio of methanol to oil. The highest biodiesel yield was 88.56% (%wt) obtained under the conditions of reaction temperature 60 °C, the molar ratio of methanol to oil 8:1 and the concentration of 1% KOH base catalyst. The characteristics of biodiesel produced in the form of density, kinematic viscosity, acid number and flash point are in accordance with the standards of Indonesian biodiesel. Catalyst concentration have a significant influence on the yield of biodiesel.Keyword : off-grade palm oil, biodiesel, base catalyst, esterification and transesterification
Penggunaan Na2O/Fly Ash Sebagai Katalis Pada Tahap Transesterifikasi Minyak Sawit Off-Grade Menjadi Biodiesel Jhon Fery Marihot Tua S; Zuchra Helwani; Edy Saputra
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

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

Abstract

Biodiesel production from the vegetable oil using homogenous catalyst has disadvantage in the product separation and negative environmental impact. Biodiesel synthesis from off-grade palm oil using Na2O/Fly ash solid base catalyst is good to simplify the separation process and the utilization of fly ash as palm oil mill waste tp support the Na2O basic site. Biodiesel production aims in this study is to see the influence of reaction temperature, molar ratio of methanol and oil and concentration of Na2O/fly ash towards biodiesel yield. The process was conducted through reaction of esterification and followed by transesterification reaction. Processing of the data in this study was conducted by response surface methodology (RSM) using Design Expert 7.0 program which is experimental design determined by central composite design (CCD) which consists of three variables. The highest result of biodiesel yield was 77,33% at 60oC reaction temperature, molar ratio of methanol : oil 8 : 1 and catalyst concentration of Na2O/fly ash 4%-w. Biodiesel characteristics like as density, kinematic viscosity, acid value and flash point has been appropriate by Indonesian biodiesel standard. The most significant process condition affecting the yield of biodiesel was catalyst concentration.Keywords: biodiesel, fly ash, off-grade palm oil, solid base catalyst
Organosolv Pulping Batang Sawit Bebas Pati Febryanto Febryanto; Zulfansyah Zulfansyah; Zuchra Helwani
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Oil palm trunk are solid waste with considerable potential and have not been used optimally. Oil palm trunk can be used as raw materials for fiber-based industries such as the pulp and paper industry, starch industry, and other timber industries. The objectives of this research is to obtain the characteristics of pulp (yield, alpha cellulose and lignin of pulp) and studied the effect of cooking time, temperature, and solid to liquid ratio on the pulp produced. Pulping was performed on a rocking digester with 30 grams of oil palm trunk powder starch free, formic acid as a solvent with reaction temperature (110 °C, 130°C and 150 °C), reaction time (60 minutes, 120 minutes and 180 minute), liquid-solid ratio (10:1 b/b) catalyst H2SO4 0,1% wt. The result showed yield pulp of = 32,78-38,99%, lignin pulp of = 7,22-9,22% and alpha cellulose of 92,46-94,85%. The cooking time and temperature has the most influence the characteristics and response of the pulp. Keywords : formic acid, oil palm trunk, organosolv pulping
Pemanfaatan Na2O/Fe3O4 Sebagai Katalis Pada Tahap Tansesterfikasi Sawit Off Grade Menjadi Biodiesel Trisuciati Syahwardini; Zuchra Helwani; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Off-grade palm oil is a source of vegetable oils that utilization is not maximized yet. It has ALB > 2% so must be process with esterification and transesterification. In general, biodiesel is produced through transesterification reactions using homogeneous catalysts. Homogeneous catalysts can be replaced with heterogeneous catalysts with easily separated and environmentally friendly. Waste iron powder can be used as catalyst support and provide metallic properties for separate product easily. This study aims to create a catalyst that has metallic properties and to study the transesterification reaction process conditions at transesterification process. Esterification process were reacted at 60 °C with time reaction 1 hour, molar ratio of methanol : oil of 12:1 and 1% H2SO4-w catalyst. The esterification reaction can reduce levels of ALB from 11.95% to 1.44%. Transesterification conducted with the molar ratio of methanol : oil in a row are 6:1, 8:1, and 10:1, the amount of catalyst modification 1% -w, 2%-w, 3% -w, a reaction temperature of 50 °C, 60 °C , 70 °C, and the reaction time 3 hours. Processing data using Response Surface Methodology (RSM), while the number of experiment are determined by Central Composite Design (CCD). Yield was resulted in ranging from 22.34% to 59.92%. The highest yield obtained at 60 °C with molar ratio of methanol : oil is 8:1 and the amount of catalyst Na2O/Fe3O4 2%-w.Keywords : biodiesel, heterogeneous catalyst, off-grade palm, rsm, transesterification.
Ekstraksi Tahap Tunggal Kalium Hidroksida Dari Abu Tandan Kosong Sawit Shinta Anggraini; Zulfansyah Zulfansyah; Zuchra Helwani
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The utilization from oil palm empty fruit bunches is still limited. One alternative to the utilization of oil palm empty fruit bunches is by extracting potassium hydroxide from the ashes of oil palm empty fruit bunches. This study aims to determine the effect of temperature and extraction time using the single-stage method on the yield of potassium hydroxide. The dry ash from oil palm empty fruit bunches is reashing in the furnace and sieved with a 200 mesh sieve then extracted using water as a solvent at a temperature of 70oC, 80oC, 9 oC and extraction time of 4, 5, 6 hours. Ash extraction of oil palm empty fruit bunches at 90oC and 6 hours resulted in a potassium hydroxide yield of 51.37%. The results showed that the yield of potassium hydroxide increased with increasing temperature and extraction time. Keywords: extraction, oil palm empty fruit bunch, potassium hydroxide, single-stage
Co-Authors Abd , Ammar Ali Abd Rahman, Sunarti Abdullah Syafi’i Adi Maulana Putra Adrianto Ahmad Afriyenti, Mia Agustiyanti, Rini Dwi Agustiyanti, Rini Dwi Ahmad Fadli Ahmad Fadli Ahmad, Khairunnas Ahmudi, Ali Al Qohyum Fernando Amir Awaluddin Amun Amri Andi Mulya Adha Andreas Sahat Parsaulian Andry Sutanto Anggraini, Diva Putri Anggriani, Rara Dewi Anna Apryana Anuar, Kaspul Ari Wibowo Harahap Arief Maulana Ilham Arini Puspita Ramadhanti Arya Wiranata Asal Felix Mandrofa Asep Rusyana Aswie, Viqha Ayu Naluri Bahruddin Bahruddin Bettry Rifani Boy M Bachtiar Boy M. Bachtiar Damayanti, Elok David Andrio Dedi Meier Silaban Delvi Yolanda Desi Ivo Andri Ari Desly Fadilla Simbolon Dhani Nur Miftahudin Diana S. Ningsih Dizikri, Dizikri Drastinawati Drastinawati Drastinawati Drastinawati, Drastinawati Dwi Septiana Dwi Yuni Ernawati Edi Susanto Edy Saputra Eferius Mendrofa Eko Suhartono Emran, Talha Bin Evionitra, Azzahra Uthami Fachry Abda El Rahman Febrian Adhitya Febrina Dwi Putri Febrina Dwi Putri, Febrina Dwi Febrina, Wetri Febryanto Febryanto Fernando, Rivo Firman Tampubolon Fitra Annisa Ganis Kharisma Wiranti Ghazi M. Idroes Ghazi Mauer Idroes Gusti Ayu Nurjanah Hafiz, Fadlillahi Hamsar Hamsar Hanafi, Muhammad Rifter Hari Rionaldo Hari Rionaldo Hari Rionaldo Hasrul Hasrul Hawa, Karfika Ainil Hawa, Karfika Ainil Heni Sugesti Heriza Saputri Heru Kristianto Holyness Nurdin Singadimedja Hutagaol, Martiandes I. K. Shamsudin I. K. Shamsudin Ida Zahrina Idral Amri Idroes, Ghazi M. Idroes, Ghifari Maulana Indarty, Rozanna Sri Irfan Sarhadi Akbar Jecky Asmura Jhon Fery Marihot Tua S Jimmy Anderson Julhijah, Noni Karfika Ainil Hawa Karina Octaria Putri Kemala, Pati Kesni savitri Kesni Savitri Khairan Khairan Khairan Khairan Khairat Khairat Khairat Komalasari Komalasari Komalasari Komalasari Komang, Hendri Kusumo, Fitranto Lala, Andi Lita Darmayanti Lubis, Vanizra F. Lukman Arifin M. R. Othman M. R. Othman M. Wahyu Nugraha Martunus Martunus Martunus Martunus Maulana, Aga Maulydia, Nur B. Mery Christina Mia Afriyenti Miftahudin, Dhani Nur Miftahudin, Dhani Nur Mohd Fajri Amrullah Monika Shecilia Muh. Fadlan Alfuadi Muhammad Dian Rizky Muhammad Gus Iqbal Al-Pakningi Muhammad Mardhiansyah Muhammad Rahman Muhammad Rifki Aulia Rahman Muhammad Zen, Muhammad Muliadi Ramli Mulya, Dynna Ardilla Putri Muslim Abdurrahman, Muslim Mustapa Ardi N. Aziz N. Aziz Nabela, Tasya Nasution, Muhammad Hatta Nazaris, Nazsha Nayyazsha Neonufa, Godlief Frederick Ni putu Vidya Primarista Ningsih, Diana S. Nirmala Sari Nur B. Maulydia Nur Khairiati Nurfatihayati Nurwijayanti Oktriyono, Febri Dwi Olsy, Fradilla Othman, Mohd. Roslee Pati Kemala Peliciamanuela, Samantha Prasetyo Arva S, Prasetyo Arva Pratama, Teddy Pratama, Yudistira Putra Zelly Nugraha, Putra Zelly Putra, Bayu Eldino Putra, Yogi Lesmana Putri Anjani Putri, Karina Octaria Putri, Karina Octaria Qalbi, Tiffani Qurotullaili Qurotullaili Rafi, M Khaidiz Rahayu, Ricky Puji Rahman, Sunarti Abd Raja Heru Nur Alam Ichsan, Raja Heru Nur Alam Ramdhani Asywal Randi Sanjaya Randi Sanjaya, Randi Rendy Putra Perdana Reno Susanto Reski, M. Ricfan Anggriawan Rina Maryenti Rinaldi Idroes Rio Nanda Novendra Rivo Fernando Rizki, Juliana Romie Jhonnerie Romy Romy Romy Romy Rozanna Sri Irianty Saparullah, Zulkarnaen Sari &#039; Ulfayana Saryono Saryono Setiadi, Fydel Sherly Oktarizona, Shinta Anggraini Silvia Reni Yenti Simbolon, Kristin Madelin Siregar, Thasya Nurfadillah Sitorus, Mesakh Fridolin Sri Helianty Sri Helianty Sri Rezeki Muria Sugesti, Heni Suhendrayatna Suhendrayatna Sukatin, Sukatin Sunarno Sunarno Surya, Andry Pratama Susanty, Wenny Susilowati Susilowati Syafi’i, Abdullah Syafrima Wahyu Syahputra, Dede Syaiful &#039; Bahri SYAIFUL BAHRI Syamsiar, Syamsiar Tengku Mukhlis Teuku Rizky Noviandy Topan Herianto Trina E. Tallei Trina E. Tallei, Trina E. TRINA EKAWATI TALLEI Trisuciati Syahwardini Trisuciati Syahwardini Triwahyuni, Vanny Efia Triyana Defi Ulfaa, Suci Mas’ama Ulima, Riris Vandhe Melsa Sembiring Viqrie Wahyudi Vito Oktariandi Walter Valentino Sinaga Warman Fatra, Warman Wenny Susanty Wenny Susanty Widya Yoesepha Yelmida Azis Yemita, Sylvia Yogi Chandra Yudha, Ricky Satria Z Zulfansyah Zahriah, Zahriah Zohera Zohera Zul Amraini, Said Zulfansyah Zulfansyah Zultiniar Zultiniar Zultiniar, Zultiniar