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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Core Subject : Engineering,
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Articles 3,145 Documents
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Indoor Beach Di Pekanbaru Dengan Penerapan Prinsip Desain Zaha Hadid Inggit Duwi Saputra; Wahyu Hidayat; Mira Dharma Susilawati
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

Pekanbaru citizen have a quite high interest in beach tourism. However needs of this community are not supported due to none of beach tourism in Pekanbaru. To reach the beach tourism thecommunity have to out of the town and moreover the atmospheres are bothered by unarranged area, colored water and muddy sand. The presence of Indoor Beach will become a solution for the needsof Pekanbaru citizen in beach tourism, which will provide a sense of comfort, secure and control all of the beach tourism activities. Existence of an artificial beach in Pekanbaru is quite rare. Thedesign of Indoor Beach using Zaha Hadid's design principles. Zaha Hadid is an architect whose known as unique building design so it will be in tune with the uniqueness of Indoor Beach. Zaha Hadid's design principles will be applied in the abstract formations, dynamic shapes, context to thesurrounding site, breaking and resistance and taking concepts from nature. The concept of Bono Waves is considered by the function of the building and the application of Zaha Hadid's designprinciples, and the concept will also be applied in the form of the process of the occurrence and philosophy of the seven ghost waves.Keyword: Indoor Beach, Zaha Hadid, Bono Waves
Pengaruh Kadar Filler Kitosan Dan Plasticizer Gliserol Terhadap Sifat Dan Morfologi Bioplastik Berbasis Pati Sagu Ummy Aisyah Rochaeni; Irdoni HS; Bahruddin Bahruddin
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

Bioplastic can be made from renewable materials like starch. Properties of sago starch based bioplastic is to be improved by addition of filler and plasticizer. The aim of this research is to know the effect of addition of chitosan filler and glycerol plasticizer to the properties of tensile strength, elongation at break, water absorption and biodegradation from sago starch. In this research with casting method of making bioplastic with starch 10 gr. Furthermore, variations of chitosan filler (2, 3 and 4%w/w), glycerol (3, 4 and 5 ml) and varieties of starch heating temperature (75, 80 and 85C). The bioplastics were characterized by tensile strength, elongation, water uptake, biodegradation, SEM (Scanning Electron Microscopy) and analyzed by using Design Expert v10.0.1. The most significant factor for all responses was the composition of chitosan filler followed by glycerol and temperature. On the best process conditions (chitosan filler 4.68% w/w at 80°C with 4 ml glycerol) was obtained the best response value for tensile strength 9.96 MPa, elongation 17.89%, water absorption 10.95% and biodegradation 40.02%.Keywords : bioplastic, chitosan, glycerol, mechanical properties, sago starch.
Studi Potensi Likuifaksi Timbunan Pasir Dengan Gradasi Ukuran Butiran Di Atas Tanah Lunak Putra Hasibuan; Agus Ika Putra; S A Nugroho
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

The island of Sumatra is the region with the highest quake intensity. Earthquakes in Aceh, Nias, Mentawai, and Padang caused a wave of vibration in the surrounding area. In Pekanbaru many buildings are built on peat soil with sand as an embankment. Liquefaction potentially occur in the earthquake propagation zone. Liquefaction is the transformation of soil state from solid to liquid. Liquefaction potential can be analyzed based on field test and laboratory test. Laboratory test was conducted using a one-way shaking table. Vibrating table moves in a horizontal and opposite direction in a vertical direction. The acceleration variations used are 0.25g and 0.32g. Peat soil thickness used 10 cm. Sand embankment thickness used 15 cm with gradation variation and water level as high as embankment thickness. Distributed load used 40kg/m2. Evaluation of liquefaction potential by analyzing soil surface settlement observation, excess pore water pressure and effective vertical stress. The measurement of pore water pressure was measured using 0.5 mm diameter glass pipe. Soil settlement measured by using ruler. The results of the test show that along with increasing acceleration, the bigger soil settlement and pore water increment will be. Grain size is very influential on the occurrence of liquefaction potential. The test results shows that the fine graded sand had maximum settlement and excess pore water pressure so that itnhas the most extreme effective vertical stress. Well graded sand tends to stable but on 0,32g acceleration it has effective vertical stress value less than zero.Keywords : liquefaction, excess pore water pressure, shaking table, grain size
Estimasi Rugi Rugi Energi Pada Sistem Distribusi Radial 20 KV Dengan Metode Loss Factor Di Penyulang Lipat Kain Gi.Garuda Sakti Dedek S Lumban Gaol; Firdaus Firdaus
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Abstract

In this final project proposes the power loss estimation on 20 kV radial distribution feeders. Base on previous empirical approaches have been found by M.W. Gustafson by changing the coefficients and constants in a formula providing loss factor. In this research ,the calculation of power loss estimation is compared with power loss measurement. Power loss calculation uses ETAP software v.12.6.0 and loss factor method is applied as estimation method. Measurement result shows 2.969.834 kWh on 7,53% power loss in Lipat Kain feeder , Garuda Sakti substation , whereas the value obtained using the estimation method loss shows 2.919.236,491 kWh on 7,04 % . There is 50.597 kWh or 1,71 % different in power loss between measurement result and estimation. Key words: loss factor, daily load curve, , ETAP.
Pengaruh Bioaktivator Mol Tapai Pada Proses Pengomposan Limbah Lumpur Kelapa Sawit Yang Disterilkan Putri, Novia Eka; Yenie, Elvi; Daud, Syarfi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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Abstract

Natural composting process takes a long time so many products developed bio-activator such as Mol. This study aims to determine the effect of concentration of activators Mol Tapai on the quality of the compost produced. Composting methods do facultative. Composting is done in the reactor to the size of the reactor used with d1 = 28 cm; d2 = 28 cm; t = 40 cm; air exchange hole diameter of 1 cm to 5 cm distance between holes. Variables used are sterile compost raw material variation and non-sterile as well as variations in the number of Mol Tapai is 200 ml, 250 ml, and 300 ml each treatment. Composting research results with a variety of raw materials by variation Mol fermented sterile 250 ml obtain C / N ratio and a high of 11.35% in non-sterile raw material variation with 250 ml Mol variation of 10.67%, which is in accordance with SNI 19-7030 -2004 about the specifics of mature compost.Keywords: Mol Tapai, palm oil sludge, compost
Produksi Bioetanol Dari Mahkota Nanas Menggunakan Bakteri Zymomonas Mobilis Dengan Variasi Konsentrasi Inokulum Dan Penambahan Nutrisi Suci Rahmadani; Sri Rezeki Muria; Syelvia Putri Utami
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Abstract

Depletion of fuel oil encourage to find alternative energy that can be renewable to support requirement energy. Therefore, looked for alternative sources of raw materials and the potential is lignocellulosic biomass. This study uses the crown of the pineapple as the main raw material. This pineapple crown containing cellulose that can be utilized as bioethanol. This study was conducted to produce ethanol by fermentation of cellulose pineapple crown with treatment concentration inoculum at 12%, 14% and 16% with the addition nutrition of urea 0,6 g/l and fermentation time of 24, 48, 72, 96 and 120 hours. The fermentation was conducted in batch process. The result showed that inoculum volume and substrate fermentation also ethanol increased since the population of cells improved. The highest yield of bioethanol is 6% (v/v) at inoculum concentred 14% and the fermentation time 96 hours.keywords : delignification, hydrolysis, fermentation, urea.
Bentuk Distribusi Hujan Jam - Jaman Kabupaten Kampar Berdasarkan Data Satelit Thessalonika Thessalonika; Yohanna Lilis Handayani; Manyuk Fauzi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
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Rainfall distribution is one of the parameters required for calculations of the design flood. The pattern of rainfall distribution is the mean of rainfall expressed in a graph that describe time function to variation in depth of rainfall. The pattern of rainfall distribution is obtained in two method, empirical method and averaging hourly rainfall data. The rainfall data used is obtained from TRMM JAXA in eight years (2009-2016) for Kampar Regency. In this research, the approach of distribution form between empirical methods with the hourly rainfall data average of TRMM to simplify the acquisition pattern of rainfall distribution. The empirical method used is Alternating Block Method (ABM), Modified Mononobe, and Tadashi Tanimoto. Based on TRMM rainfall data, that rainfall duration was dominated by one hours rainfall events. The analysis results for pattern of rainfall distribution approach of TRMM JAXA with empirical method shows that designed rainfall duration (3 to 8 hours) tends to approach Alternating Block Method (ABM) pattern.Keywords: Rainfall distribution, satellite rainfall data, Alternating Block Method, Modified Mononobe, Tadashi Tanimoto
Kaji Eksperimental Perambatan Pembakaran Pada Gambut (Smoldering Combustion Propagation Of Peat) Dari Gambut Tropis Kabupaten Pelalawan Pada Skala Laboratorium Harun Orion; Awaludin Martin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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A peat combustion in Indonesia is one of the biggest problems that support the increasing of the earth surface temperature by spreading of the CO2 gas in the air that significantly increased. Smoldering fire of peat has some of characteristics, which are slow burning, long-lasting combustion, and relatively low combustion temperatures. This method is done by examine the phenomenal that happens when the peat is burning down. In this matter, the peat from Pelalawan province of Riau that is going to be analyzed. The examination is going to use the peat that has been dried for 24 hours, and the moisture level after it has interacted with the air was 7.09%. The sample treatment prior to the combustion testing with the sample treatment without load and with loading, maximum temperature of peat burning 508.72 ° C and 500 ° C respectively, the rate of peat propagation of 5.17 cm/hour and 1.11 cm/hour. After testing the burning of smoldering peat, there was burned peat mass of 217 gram and 158 gram respectively.Kata Kunci : smoldering combustion, peat, combustion phenomenal
Sintesis Biodiesel Dari Minyak Nyamplung (Calophyllum Inophyllum L.) Menggunakan Katalis Lantanum/Lempung; Pengaruh Variasi Logam Lantanum Dan Rasio Mol Minyak : Metanol Ibnu Oktariza; Syaiful Bahri; Irdoni Irdoni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Biodiesel can be made from Alexandrian laurel oil as one of alternative energy replacement for fossil fuels. This aims of this research were determine the effect of lanthanum metal variation and variation in the ratio of oil : methanol against product results biodiesel, to produce biodiesel from Alexandrian laurel oil as alternative fuels renewable energies that can be renewed and identify the characteristics of the physical and chemical properties of biodiesel produced. Catalyst is made by grinding the clay to a size of -100 +200 mesh, then clay was activated using H2SO4 solution 1.2 M. The variation of lanthanum metal impregnation on clay are 0%-b, 1%-b, 3%-b, 5%-b, then calcined, oxidation and reduction. Production of biodiesel is carried out through two stage: esterification and trans-esterification with variation in the mole ratio of oil : methanol is 1 : 6, 1 : 9 and 1 : 12. Alexandrian laurel oil sample weight 50 gram and 3% by weight of catalyst added to the to trans-esterification reactor. The reaction lasted at 60 0C with agitation speed 400 rpm for 120 minutes. This research resulted in the largest biodiesel yield on the use of La(1%)/clay catalyst with variation mole ratio of oil : methanol 1 : 9 is 86.90%. The characteristics of the catalyst that has a surface area ratio respectively 2.95, 40.22, 27.59, and 18.48 (m2/g). The Biodiesel produced in accordance with established standards (SNI 04-7128-2016).Keywords : biodiesel, Alexandrian laurel oil, lanthanum/clay catalyst
Perencanaan Instalasi Pengolahan Air Limbah Domestik Di Kampus Universitas Riau Mutiara Zikron; Jecky Asmura; Aryo Sasmita
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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The increase number of students at Riau University is 37,18% in 2017 which increased consumption of clean water that had an impact on increasing domestic wastewater in campus area. The technology use for wastewater treatment plants consists of equalization tanks and Anaerobic Baffle Reactor (ABR) tanks. The dimensions for the equalization building are 7 m long, 4 m wide, and 2,2 m high, while the dimensions for Anaerobic Baffle Reactor (ABR) is 19 m long, 9,5 m wide, and 1,5 m high.Keywords: Domestic Wastewater, Anaerobic Baffle Reactor

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