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Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Core Subject : Engineering,
Engineering
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Articles 3,145 Documents
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Pengaruh Pemanfaatan Abu Kulit Kerang Sebagai Filler Terhadap Stabilitas Campuran AC-WC Febri Paramitha Ramadhani; Alfian Malik; Gunawan Wibisono
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

In the highway pavement, fillers have the smallest parts if be compared to coarse and fine aggregates. Fillers that commonly used are Portland cement, limestone, stone ash and fly ash which is relatively expensive. Therefore, there is a need for research by using other alternative materials such as shellfish ash (AKK) which is one of the waste materials that have similar characteristics to cement. The purpose of this study was to test the performance of clamshell ash fillers in AC-WC mixtures that eligible Marshall requirements based on Bina Marga Specification 2010 Revision 3 method using shellfish ash used as fillers in ACWC mixtures. The type of bitumen used in this study is asphalt with penetration of 60/70. In this study, the filler proportion used were 0%, 2%, 4%, and 6% of the total weight of the aggregate mixture. Tests were carried out by using the Marshall test with a variety of treatment periods of 1 day, 4 days, 7 days and 28 days of immersion at 600C temperature. The results showed that Marshall durability with variations in the addition of shellfish ash by 2% with optimum bitumen content 6.3%, has the lowest durability value of 12,95%. While the variation of the addition of shellfish ash by 2% with optimum bitumen content 6.3%, has the highest durability value of 25,28%. This mixture is more resistant to the effects of water on the immersion process. Keywords: Shell ash, AC-WC, Bina Marga Specification 2010 Revision 3, durability
Isoterm, Termodinamika Dan Kinetika Adsorpsi Logam Cu Menggunakan Adsorben Serbuk Kulit Udang Hadi Ikrima; Yelmida A; Syamsu Herman
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

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Abstract

Most of the shrimp shell waste consists of chitin compounds which can be converted into chitosan. The use of chitin and chitosan are mainly as chelating agents, emulsifiers and adsorbents. In this study, shrimp shell waste was used directly as an adsorbent on Cu metal, without changing the shrimp shells to chitin or chitosan. Shrimp shell waste at the initial stage was treated including washing, drying, refining, sieving and being activated using 0.5 M HCl solution. The activated shrimp shell powder was then used as an adsorbent against Cu metal, by varying the temperature (30, 40 and 50 oC) and mass of the adsorbent (2,5 ; 5,0 and 7,5 grams) . The maximum adsorption capacity occurs at a temperature of 50oC and an adsorbent mass of 7.5 grams with a capacity of 93.59%. The isotherm model of the adsorption process follows the Harkins Jura isotherm model with a R2 value of 0.9891. The kinetics of the adsorption process followed the pseudo second order kinetics with an adsorption rate constant of 0.019 and an R2 value of 0.9974. The adsorption heat capacity (ΔH) is 7.90 kJ / mol and is endothermic.Key words: adsorption, activation, shrimp shell waste, Cu metal.
Pembuatan Briket Dari Produk Torefaksi Pelepah Sawit Ramdhani Asywal; Zuchra Helwani; Warman Fatra
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

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Abstract

Palm frond is biomass that has not been widely used as a renewable energy source. Torrefaction is a pretreatment process to improve the quality of the biomass as solid fuel. The aims of this research was to made briquette from palm frond which appropriate with SNI, and then to determined the effects of particle size, pressure and filler composition on response toward calorific value and pressure using Responce Surface Methodology (RSM). Palm frond uses sieve 60, 80 and 100 mesh. Pressure 100, 110 and 120 kg/cm2, and tapioca adhesive composition 10, 20 and 30%-wt. The highest calorific value was 3989,05 cal/g which obtained at 100 mesh of particle size, pressure 120 kg/cm2, and filler compostion 10%-wt. The highest pressure was 8,92759 kg/cm2 which obtained at 100 mesh of particle size, pressure 120 kg/cm2 and filler composition 30%-wt. Process conditions is very influence significantly on the calorific value and compressive strength is the composition of the adhesive and the pressing pressure. Keywords : Briquette, Torrefaction, Responce Surface Methodology, Calorific Value, Renewable Energy
Perancangan Dan Aplikasi Pembangkit Plasma Tegangan Tinggi AC Menggunakan Dual Flyback Transformer Topologi Inverter Push-Pull Faisal Setiawan; Fri Murdiya
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

In this study, a laboratory-scale prototype of high-voltage plasma generator has been realized. This generator intends to have the capability to employ corona plasma which is used as an application medium for the decomposition of coconut shell waste carbon material into graphene. The design of the high voltage generator prototype is divided into three main parts, the first isa full wave rectifier with a 12 volt CT used as a unidirectional power supply in the inverter driver control circuit, and the design of a switch module power supply (SMPS) prototype with adjustable voltage 0-50 volts are used as the unidirectional input voltage in the push-pull inverter power circuit. Furthermore, the second is the inverter control circuit using the TL494IC as a MOSFET triggering frequency oscillator driver, and using a pulse transformer isolator as an electrical isolator as asafety between the control circuit and the power circuit in the push-pull inverter, and the third is the inverter power circuit design on the This research is designed with a push-pull inverter topology using a MOSFET as an alternating current switching electronic switch. This device operates when connected to a ferrite core TV Flyback Transformer which is able to work at high frequencies with a winding ratio 1 : 75 as a fast transformer to raise it to a high voltage with a plate-rod electrode configuration. The success of the corona plasma appearance depends on the voltage and electric currents, as wellas the distance between the electrodes. Meanwhile, the amount of plasma discharge stress on the carbon material is directlyproportional to the success of producing graphene. The higher the exposure of the plasma discharge stress to the carbon material, the greater the success of producing graphene. Tests carried out by varying the input voltage of the inverter from 9,0 volt, 13,9 volt and 19,5 Volts AC. Based on the results of the Transmission Electron Microscope (TEM) test, the best resultsfor the formation of graphene structures are the inverter voltage variation of 19,5 volts AC for 5 minutes and the electrodedistance of 10mm with the highest voltage of 2,77 kV at 54,82 kHz.Keyword : Push-Pull, Flyback TV Transformer, graphene
Pembuatan Dan Karakterisasi Membran Selulosa Asetat Dari Serat Daun Nanas Untuk Pengolahan Limbah Pulp And Paper Eka Putri Sriandriani; Jhon Armedi Pinem; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
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Abstract

The membrane is a selective and semipermeable thin layer between two phases, namely the feed phase and permeate phase. One of the ingredients for making membranes is cellulose acetate from pineapple leaf waste. The purpose of this research is to make cellulose acetate membrane using cellulose from pineapple leaf waste as the main raw material with composition variation and pressure variations. In this research uses variations in polymer cellulose acetate are 15% (w/w), 20% (w/w) and 25% (w/w) and pressure variations are 1 bar, 2 bar and 3 bar. The stages of making membranes are taking pineapple leaf fibers, making cellulose acetate, making cellulose acetate membrane and testing the mechanical properties of the membrane. At optimum condition, flux value was obtained 22.26 L/m2.h at 3 bar with cellulose acetate composition 25% w/w. While the highest rejection value was obtained at a membrane composition of 25% w / w with COD 81.12%, BOD 76.03% and TSS 77.91% at 3 bar pressure. If more cellulose acetate composition were used, the flux value will be decrease and the rejection will be increase. If pressure increase, rejection and flux value will get higher. Keywords : cellulose acetate, flux, membrane, rejection.
Penerapan Jaringan Syaraf Tiruan Metode Backpropagation Dalam Memprediksi Konsentrasi Program Studi Berbasis Web (Studi Kasus: Program Studi Teknik Informatika Universitas Riau) Chi-chi Salsa Amaza; Feri Candra
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

Determination of the majoring of the study is very affected in college student’s academic activities. The goal of a major concentration is to help students focus on the major or study that is of based on their potential. University of Riau, Informatics Engineering Study Program has three study concentrations, there are Computing and Vision Intelligence (KCV), Network Based Computing (KBJ), and Software Engineering (RPL). However, choosing a study concentration is not easy for some students. Some students choose the concentrate just to come along with their friends which is not chosen based on their potential. The technology has been used extensively in all aspects of human life, as well as the application of Artificial Neural Networks (ANN). One of the ANN model, backpropagation network is a method of learning that often used in some aspects, one of the aspect is for predicting. Backpropagation is an best method for solving the complex patterns. Therefore, this research will use the backpropagation method on a website basis to predict the majoring of the study programs for college students. This system is designed by using PHP language, HTML dan MySQL database. The obtained accuracy of this system is 95% on the training process and 86% on the testing process with 15 hidden layers combined parameters, 4000 epoch points and and 0.2 learning rate points. Keywords: Artificial Neural Network, Backpropagation, Forecasting, HTML, PHP, Website
Analisis Kedip Tegangan Pada Trafo Distribusi 20 KV Fakultas Teknik Universitas Riau Menggunakan Power Quality Analyzer (PQA) Riko Simalango; Firdaus Firdaus
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The voltage dip is a disturbance that often occurs in electrical power systems that reduce power quality. In general the voltage dip appear from the use of electrical equipment and electrical machines that consume a lot of power, and will be effect the performance of electronic and sensitive equipments caused by voltage dip. Voltage dip measurement in a 20kV distribution transformer of Engineering Faculty Riau University will be compared with IEEE 1159-1995 Standard. The method use in this research is a direct measurement using Power Quality Analyzer (PQA) KEW 6310 for each phase of the transformer. From the results of measurements from October 21 - October 28, 2019 phase R on Monday, October 21, 2019 At 15:05 WIB voltage dip occurred for 0,2 seconds, the voltage drop was 24,4 volts (10,16%), phase S on Thursday, October 24, 2019 at 15:48 WIB, there was a voltage dip of 25,1 volts (25,1%) for 0,2 second, voltage dip in measurements that have been made a long time the dip category momentary, and phase T are not experiencing a voltage dip, the voltage drop was 10,8 volts (4,50%). Keywords: voltage dip, distribution transformer, power quality analyzer (pqa)
Advanced Oxidation Process (AOP): Degradasi Zat Warna Rhodamin B Dengan Metode Fotokatalitik Menggunakan Katalis Covalent Triazine Framework (CTF) Andes Sagita; Edy Saputra; Panca Setia Utama
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

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Abstract

BPS recorded the export value of national textile products reached US$ 13.22 billion in 2018 and increased to US$ 15.73 in 2019. The problem that later arises was the textile waste generated by those industries. One of the methods for treating textile dye waste is the photocatalytic. The catalyst used in this study is the Covalent Triazine Framework (CTF), while the radiation comes from a 250 watt mercury lamp. The dye waste used is rhodamine B. The CTF catalyst synthesis was carried out by the ionothermal method at a temperature of 450oC and argon atmosphere for 18 hours. 1,4-dicyanobenzene used as monomer and ZnCl2 as molten salt, the two ingredients are mixed in a furnace cup with a weight ratio of 1: 8 (monomer: molten salt). The best photocatalytic results were shown by variations in the concentration of 1 g/l catalyst and 10 ppm of rhodamine B with a degradation efficiency of 94.790%.   Keywords: covalent triazine framework, ionothermal, textile, photocatalytic
Automotive Center Di Pekanbaru Dengan Pendekatan Arsitektur High Tech Prabowo, Jevri; Faisal, Gun; Aldy, Pedia
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Automotive center is a central that can accommodate all activities consumer, manufacturer or seller related to automotive of the car. Pekanbaru as the capital of Riau Province has a number of four-wheeled vehicles that continue to increase annually, so that the automotive market is potentially growing. Pekanbaru City does not have a special automotive center building, the current condition of companies related to automotive is still scattered. Pekanbaru Automotive Center planning becomes the solution of the problem that serves as an educational, commercial and social facilities and there are supporting facilities for user activities. This method uses High Tech Architecture because being able to present building functions as a place with automotive image representing a technology, manufacturing, sophisticated, flexible and functional. The concept used is “Piston” that take the characteristic of the piston motion system, to make it more flexible in the construction process or to give the engine resemble quality. Keyword : Automotive Center, Pekanbaru, High Tech Architecture, Piston
Penerapan Prinsip Rancangan Tadao Ando Pada Fasilitas Kegiatan Rohani Kristen Di Pulau Bintan Yuda Dodianju Munthe; Mira Dharma. S; Yohanes Firzal
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
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Abstract

Christian spiritual activities are public activities for Christians / congregants, such as worship, prayer and spiritual performances as well as public activities, whether sports, arts, organization / community, place of formation, training, performances and social activitiesand various activities which are shared (Pasla & et al, 2015). The needs of Christians for spiritual facilities are very basic and important needs. So far the facilities provided by the parent organization of the congregation to the congregation have only been completed by theconstruction of a church building and manse and often forget the considerations of other facilities that can support various other spiritual activities besides worshiping. The Christian Spiritual Activity Facility is also expected to become a place that can accommodate variousspiritual activities with adequate facilities, become a training ground for anyone who has the desire to develop talents to serve God and even is expected to become a new religious tourism site on Bintan Island . Christian Spiritual Activity Facility will be located in Tanjungpinang Timur sub-district. This location was chosen based on data from the Central Statistics Agency in 2018 which states that the largest distribution of Christians is in the District of East Tanjungpinang. In the design of the Spiritual Activity Facility on Bintan Island, the Tadao Ando principle will be used. Tadao Ando introduced a theory of modernism which he called "Zen Minimalism". Zen minimalism is a design concept that is basically acombination of the concept of simplicity of form, naturalness, and the concept of emptiness in human beings themselves. Simplicity and emptiness transformed into a concept where thesimplicity of everything can lead a person to achieve a void of self in order to realize that he is a part of nature (Ando in Kapugu, 2017).keywords: Christian Spiritual Activity Facility, Tadao Ando, Bintan, Tanjungpinang

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