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All Journal Jurnal Sains dan Teknologi Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Jurnal Teknik Jurnal Serunai Bahasa Indonesia Unri Conference Series: Community Engagement International Journal of Economic, Business, Accounting, Agriculture Management and Sharia Administration (IJEBAS) Jurnal Transformasi Administrasi Catimore: Jurnal Pengabdian Kepada Masyarakat International Conference on Health Science, Green Economics, Educational Review and Technology (IHERT) Jurnal Teknologi & Rekayasa Sipil Jurnal Infinity Cakrawala: Journal of Religious Studies and Global Society Jurnal Akuntansi, Ekonomi dan Manajemen Bisnis
Edy Saputra
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Religion Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Social Sciences Other

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Journal : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Produksi Biodiesel Dari Minyak Sawit Off Grade Menggunakan Katalis Na2O/Fe3O4 Pada Tahap Transesterifikasi Widya Yoesepha; 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

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Abstract

Palm oil off grade is one of feedstock biodiesel from preparation of over done and decomposed palm oil. This palm oil off grade have >5% free fatty acid composition, therefore need two process to produce biodiesel that is esterification dan transesterification. The purpose of this research is to produce heterogen basic catalyst from iron powder impregnation with Na2O and study the effect of condition process variation. The variation of transesterification process is temperature (50oC, 60oC and 70oC), mole ratio of oil : methanol (1:6, 1:8 and 1:10) and catalyst concentration (1%-wt, 2%-wt and 3%-wt) as long as 3 hours. The result of this research was processed with Response Surface Methodology (RSM) and the number of steps was determined by Central Composite Design (CCD). The highest yield of biodiesel is 79,52% at temperature60oC, mole ratio oil : methanol 1:8 and catalyst concentration 2%-wt. The result showed that the catalyst concentration influencing the yield of biodiesel.Keywords: biodiesel, heterogen catalyst, palm oil off grade, response surface methodology, transesterification
Pengaruh Laju Alir CO2 Dan Suhu Pada Proses Presipitasi Silika Dengan Menggunakan Dispersan Polietilen Glikol Novi Purnama; Edy Saputra; Panca Setia Utama
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Precipitated silica can be synthesised from Palm Mill Oil Fly Ash (POMFA) by alkali extraction combined with sol-gel precipitation. Sodium hydroxide were used to extract silica from POMFA to produce sodium silicate. Silica was precipitated using CO2, the effect of CO2 flow rate and temperature on the precipitation process were studied. The CO2 flow rate of 100, 200, 300 and 400 mL/min and temperature of 60.70, 80, 90oC were used at the precipitation process, to enhance the characteristic of precipitated silica obtained, dispersant PEG-400 5% (v/v) was added. The CO2 flow rate was stopped when the silica began to precipitate and the stirring speed increase up to 1000 RPM for 90 minutes. Silica obtained, was separated from the filtrate using filter paper, washed with hot distilled water and then dried. The maximum yield of 81.01% was obtained at temperature of 70oC and a flow rate of 200 mL/min. The precipitated silica was characterised using XRF to determine silica composition and XRD to determine wether the precipitated silica is in amorphous form. The Scherrer equation was applied to estimate the primary particle diameter.Keywords: CO2, Precipitated, Silica, Temperature, Yield
Sintesis Biopelumas Dari Minyak Biji Karet : Pengaruh Rasio Molar Antara Etilen Glikol Dan Asam Lemak Serta Waktu Reaksi Esterifikasi Terhadap Yield Biopelumas Fenny Lasma Hilde S; Irdoni Irdoni; Edy Saputra
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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Abstract

Lubricants used to protect engine components from worn-out. Rubber seed oil is an oil that can not be consumed cause toxicthus potentially used as raw material for biolubricants. This research purposes to study the synthesis of biolubricants from rubber seed oil to observe the effect of rasio mol between fatty acid and time of esterification reaction to the yield of the product. The research was begun with the extraction of rubber seed to get the oil. Then, the oil was degumming to purify the oil from the gum. Next, the oil was hydrolysis to make fatty acid and glycerol. Furthermore, fatty acids will be esterified with etylen glycol on a mole ratio of 3:1, 6:1 and 9:1, and time reaction for 2,3 and 4 hours, stirring speed 180 rpm, and the reaction temperature is 150 oC. The yield raised with the increase of fatty acid rasio mol and time of reaction. The highest yield is 79,772 % at 4 hours time of reaction with 9:1 rasio mol fatty acid and etylene glycol at stirring speed of 180 rpm. Flash point of the biolubricant is 387°C, pour point 7°C, density 0,9143 g/ml and viscosity index amounted 162,329.Keywords: biolubricants, esterification, etylen glycol, rubber seed oil, yield
Sintesis Biodiesel Dari Minyak Biji Nyamplung (Calophyllum Inophyllum) Menggunakan Katalis Geopolimer Berbasis Kaolin Al Qarni Putra; Edy Saputra; Komalasari Komalasari
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

Biodiesel is one of alternative energy which replace the fossil fuel as the product of transesterification of vegetable plants. Whole this time, the process of making biodiesel using homogeous catalyst NaOH or KOH which produce soap and hard to separate biodiesel product using catalyst as its disadvantages. Therefore, by using heterogen catalyst, researcher start to develop it using catalyst geopolymer in the oil of calophylluminophyllum seed. The objective of this research is making biodiesel from the oil of calophylluminophyllum seed, knowing the influence of geopolimer ctalyst toward the number of biodiesel that has been produced, knowing the best condition of making biodiesel and also identifying the charateristics of calophylluminophyllum seed oil. This research starts from raw material preparation which include mixing, heating, and refinement. Furthermore, degumming the calophylluminophyllum seed oil to remove impurities contained in the oil. The transesterification process of oil has done in different level of speed i.e 200, 300, 400 rpm respectively and various catalyst concentration i.e 1%, 2%, 3% respectively at methanol of oil mole ratio 9: 1 and the reaction temperature of 60 °C and a reaction time of 120 minutes. From the result was obtained that the highest biodiesel of 92,14% at the stiring speed 400 rpm with 2% concentration geopolymercatalyst. Physical characterization have done such as density 878 kg/m3, kinematic viscosity3,67 mm2/s, acid number 0,46mg-KOH/g biodiesel and flash point 137°C respectively according to the standard of Indonesian biodiesel (SNI 7182:2015).Keywords :Biodiesel, calohyllum inophyllum seed oil, geopolymer
Pirolisis Kulit Kayu Pinus (Merkusii) Menjadi Bio-Oil Dengan Katalis Mo/NZA Yuliati Eka Putri; Syaiful Bahri; Edy Saputra
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

Global issues becoming a serious discussion in the depletion of oil reserves and coal. Dependence at fuel on nonrenewable energy sources should be avoided, sooner or later energy sources will run out. We have to look for other sources of energy that can be updated to cope of with these problems. One of the alternative energy that can be developed bio-oil. Bio-oil is produced with the use of biomass by pyrolysis process. The purpose of this research is to determine the effect of Mo metal on the catalyst Mo / NZA as well as influence of the catalyst on the bio-oil produced. Physical properties such as density, viscosity, acidity and a flash point of bio-oil were measured. And the chemical components of the bio-oil measured by GC-MS method. Pyrolysis using pine bark as much as 50 grams along with 500 ml silinap with variations Mo metal to NZA 0%; 0,5%; 1% and 1,5% w / w and the weight variation of the catalyst Mo/NZA 3%, 6% and 9% of the biomass. The process having stirring speed of 300 rpm and temperature of 320ºC for 120 min. The Highest yield of bio-oil obtained of 1,5% catalyst Mo/NZA with 9% of the amount of catalyst was 67,16%. From physical analysis conducted on bio-oil were obtained: density 0,781 g/ml, viscosity 2,094 cSt, acidity 20,906 mg NaOH/g sample, and the flash point 52 oC respectively. From the GC-MS analysis, the dominant chemical components at bio-oil is a 1-Propene (12,19%), 2-Pentene (8,2%), Pentane (10,54%), Cyclohexane (13,78%) and Heptane (3,52%) respectively.Keywords : Bio-oil, Mo/NZA, Pine bark, Pyrolysis
Kuat Tekan Dan Sifat Fisik Beton OPC, OPC POFA, Dan PCC Menggunakan Air Gambut Sebagai Air Pencampur Beton Redol Sianturi; Monita Olivia; Edy Saputra
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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The use of peat water is often used as concrete mixing water in areas difficult to obtain clean water. Peat water containing a low pH is not recommended as concrete mixing water because it can reduce the quality of concrete. Mineral materials such as Palm Oil Fuel Ash (POFA) used in the concrete mix to increase the density and strength of the resulting. This study aims to assess the compressive strength and physical properties such as porosity and water sorptivity concrete using peat as concrete mixing water. Type of cement used in the concrete mixture is OPC, PCC, and OPC POFA 10%. Peat water for the research came from Rimbo Panjang, Kampar and POFA derived from PKS GAS, Kandis. Research results show that the peat water can still be used to mix concrete is still above the minimum strength of 90% of the normal compressive strength.Keywords: OPC, PCC, palm oil fuel ash(POFA), peat water
Kinetika Sintesis Hidroksiapatit Menggunakan Metode Hidrotermal Suhu Rendah Dengan Pendekatan Shrinking Core Model Nurul Afifah; Ahmad Fadli; 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

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Abstract

Hydroxyapatite (HA) is a ceramic that can be used as bone implants and teeth. Hydroxyapatite can be synthesized from Calcium Oxyde (CaO) commercial reacted by ammonium dihydrogen phosphate (NH4H2PO4). The purpose of this research are to determine the effect of time and temperature on characteristic of HA synthesis by low temperature hydrothermal method as well as to determine the kinetics model of HA synthesis by using the approach of shrinking core models. There are 3 models are used, the diffusion through liquid film, diffusion through HA layer, and chemical reactions. The procedure was started with synthesized 36.9 gr NH4H2PO4 was dissolved in 600 mL of water and then added 30 gr CaO with temperature of 70°C, 80°C, 90°C and reaction time of 10 minutes - 480 minutes. The mixture was stirred rate of 300 rpm until paste formed. Then the paste was dried in the oven at temperature 120°C for 12 hours and calcined at a temperature of 900oC for 1 hour. The results of this research showed that obtained products were containing 97% HA. The best of kinetic model that described HA synthesis was model of diffusion through HA layer , with formula:Keywords: hydroxyapatite, hydrothermal, CaO, kinetics model, shrinking core.
Prarancangan Pabrik Metanol Dengan Proses Lurgi-Low Pressure Methanol Dengan Disain Alat Utama Reaktor Pre-Reforming Denny Elisabet Situmeang; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Methanol is the simplest form of alcohol with the chemical formula CH3OH. Methanol is commonly used for solvents, anti-freezing refrigerants, and fuels. Methanol is also an intermediate compound that is used as raw material for various industries including acetic acid, formaldehyde, MTBE, polyvinyl, polyester, and DME industries. The need for methanol in Indonesia continues to increase. The raw material used in this methanol plant design is natural gas. This methanol plant will operate for 330 days per year with a continuous work of 24 hours/day and a capacity of 200,000 tons/year which will be established in Dumai, Riau. The main equipment design in this plant is the Reactor Pre-Reforming which functions to form synthesis gas in the form of carbon monoxide (CO), carbon dioxide (CO2) and hydrogen (H2) with the help of H2O. The Pre-Reforming Reactor is operated at a pressure of 29.5 bar and a temperature of 550 ° C. The economic analysis on the design of this plant shows that the Methanol plant with the Lurgi Low Pressure process is feasible to be built with the profit after tax of Rp8,190,624,006,578 and the factory Payback Period (PBP) of 3.1 years. Keywords: Economic Analysis, Lurgi Low Pressure Process, Methanol, Pre-Reforming Reactor
Durabilitas Mortar Bubuk Kulit Kerang Di Air Gambut Ismi Siska Rahmayani; Monita Olivia; Edy Saputra
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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In this study, blood clam used as filler in mortar. The specimens were cured in distilled water until 28 days. Then specimens were immersed in peat water until 91 days. The parameters studied include compressive strength and porosity. These properties were compared with those of a control mortar that was made of Ordinary Portland Cement (OPC). The main parameter of this study was the proportion of waste blood clam (4% by cement weight). The results showed that the compressive strength of mortar with blood clam are increase more than mortar OPC. Mortar becomes more resistant because it was filled by the blood clam.Keywords: blood clam, durability, filler in mortar, peat water, compressive strength, porosity
Pengaruh Konsentrasi Naoh Terhadap Kuat Tekan Mortar Geopolimer Abu Terbang Dengan Perawatan Suhu Ruang Niko Rizaldi; Edy Saputra; Monita Olivia
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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Abstract

Geopolymers are environmental friendly construction materials derived from industrial wastes such as fly ash. The use of geopolymers can reduce the use of cement, therefore reducing world carbon emissions. Polymeric bonding in geopolymer fly ash can be activated using alkaline solutions namely Sodium silicate and Sodium hydroxide (NaOH). This study used fly ash from Padang, West Sumatra. The purpose of this study was to examine the effect of the use of fly ash and Sodium hydroxide on the compressive strength of geopolymer mortar. The research method began with the test of the characteristics of fly ash and fine aggregate. Then the fly ash was added to the cement paste with the various concentrations of 8M, 10M, 12M, 14M and 16M NaOH. The size of mold used was the cube of 5 cm x 5 cm x 5 cm. The compressive strength test of mortar was carried out on 7, 14, 28 days of mortar age. The results of this study indicated that the fly ash reacted with NaOH and the compressive strength of mortar geopolymer was influenced by NaOH concentration. The compressive strength of mortar geopolymer showed an increase on specimens that contained 8M, 10M and 12M NaOH. For example, for the use of specimen with 12M NaOH, there was an increased of compressive strength of 16,7% compared to that of specimen with 8M NaOH. On other hand, the compressive strength of specimen containing 14M NaOH and 16M NaOH decreased by 19,6% and 73,21% respectively, compared to that of specimen containing 12M NaOH. The conclusion of this study was the optimum compressive strength occurred on specimens that contained 12M NaOH by 11,2 MPa.Keywords: compressive strength, fly ash, geopolymer, mortar, NaOH concentration
Co-Authors Abdullah Syafi’i Ade Anggriawan Affananda Taufik Agustinus Lamhot Viraro Ahmad Fadli Ahmad Zaki Al Qarni Putra Aldi Okta Priyatna Amin Fitra Amir Awaluddin Andes Sagita Arbhy Indera Ikhwansyah Arif Kurnia Arosyidin Arosyidin Bagus Pria Alwadipa Bahruddin Chairul Chairul Charismayani Charismayani David Andrio Delvi Yolanda Denny Elisabet Situmeang Desly Fadilla Simbolon Diana Farid Eka Putri Sriandriani Eka Trisnawati Ekadian Lestari Simatupang Ekky Wahyudi Enang Vovilya Eri Kaiyul Erlisa Yanuari Putri Evelyn Evelyn Farhiz Lagan Febrian Adhitya Fenny Lasma Hilde S Fitriani Fitriani Fitry Rahmah Ganis Kharisma Wiranti Genardus Oktavri Sijabat Gusti Ayu Nurjanah Hade Karimata Hafizah Hamdanil Hamdanil Hebby Rahmatul Utamy Heru Kristianto Hery Fiza Simarmata Ilok Dianggoni Imelda Dewi Agusti Inget Yester Yunanda Irdoni Irdoni Ismeddyanto, Ismeddiyanto Ismi Siska Rahmayani Jhon Armedi Pinem Jhon Fery Marihot Tua S Kartika Pratama Syafitri Khairat Khairat Kiki Farida Ferine Komalasari Komalasari Lita Darmayanti Lora Mona Tambunan M Arief Riandy M. Isa Indrawan M. Wahyu Nugraha Magfirah Marihot Danield Vyendri Simatupang Miguel Felix Wijaya Mohd Fajri Amrullah Monita Olivia Moses O. Tadé Mufti Fahrizal Harahap Muhammad Rahman Muhammad Sulaiman Mustapa Ardi Nani Agustina Nazily Haryati Niko Rizaldi Nissa Aqhilla Nova Dwi Safitir Novi Purnama Nuraina Siregar Nurhasanah Nurhasanah Nurlis Nurlis Nurul Afifah Peji Nopeles Rahman Fikri Redol Sianturi Reno Susanto Rianti Ratna Dewi Rio Akbar Rio Saputra Rizaldi Riski Irawan Rozanna Sri Irianty Shaobin Wang Shaobin Wang Sitanggang, Ronal Rius Solly Aryza Sri Meilani Sri Ulina Beru Ginting Subangkit Julio Jaya SYAIFUL BAHRI Syaifullah Muhammad Syaifullah Muhammad Syarfi Daud Syarfi Syarfi Syelvia Putri Utami Tajul Arifin Tarsensius Wabady Happy Limbong Tejo Yulandi Tresia Monika Natalia Sinaga Trisuciati Syahwardini Utama, Panca Setia Viqrie Wahyudi Wahyu Muhammad Firdaus Wahyuni Zumara Wali Ara Widya Yoesepha Windy Nila Hakim Yelmida Azis Yudhi Salman Dwi Satya Yuliati Eka Putri Yunita Selonika Zuchra Helwani Zultiniar Zultiniar