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Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
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Articles 3,145 Documents
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Model Fisik Sub Surface Flow Constructed Wetland Untuk Pengolahan Air Limbah Musala Al-Jazari Fakultas Teknik Universitas Riau Hidayat, Taufiq; Darmayanti, Lita; Sujatmoko, Bambang
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Musala Al-Jazari is located in the Faculty of Engineering, University of Riau. Activity in musala every day produces a wastewater effluent. Wastewater directly discharged and allowed to seep in flooded soil without first processing that can affect groundwater quality. One of the appropriate technology is simple, inexpensive and easy in operation and maintenance system to reduce pollutants in wastewater was constructed wetland. The purpose of this study is to plan physical model of Sub Surface Flow Constructed Wetland (SSF-Wetland) field scale, determine the effectiveness of SSF-wetland in reducing water waste and calculate budget construction costs SSF-Wetland. Research using medium black soil and water jasmine plants (Alisma plantago). Water quality parameters tested were pH, Chemical Oxygen Demand (COD) and Total Suspended Solid (TSS). The results of the study resulted in the highest efficiency value of 78.07% reduction in COD, TSS of 78.72% and an increase in the pH value of 27.59%. From planning SSF-Wetland obtained the total planned budget of Rp. 6,574,527.16. Overall the results showed that the constructed wetland besides being able to improve the quality of waste water can also beautify the area musala.  Keywords: wastewater, constructed wetland, alisma plantago
Analisa Kelayakan Ekonomi Pembangunan Jalur Kereta Api Minang Kabau International Airport (MIA) Sumatera Barat Rizaldi, Nulvi; Taufik, Hendra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The province of West Sumatera has the presticigious international airport is known as Minangkabau International Airport (MIA). It provide positive impacts for additional traffic for aircraf. Due to that, the MIA  needs a special airport transportation to encourage this faciltiy, such as Railbus. Due toThe railway construction consumes a lot of cost, it necessary to anaiyse its benefits and disadvantages. The purpose of this research is to carry out the economic feasibility of railway construction the Minangkabau International Airport (MIA) in West Sumatera. This research focus on the cost of railway construction, cost revenues from the carriage of passengers and economic feasibility analysis by using method of Net Present Value (NPV), Benefit Cost Ratio (BCR), Internal Rate of Return (IRR) and Break Even Point (BEP), sensitivity analysis and based on three travelling scenarios . The result of this study may also useful  for recommendation to the stakeholders. As a result, the cost Railbus investment is Rp. 133.731.000.000,-, by using an  interest rate of 10,5%, is obtained for the first scenario NPV = – Rp. 175.175.021.608, BCR = 0,52, IRR = 8,11% , the second scenario NPV =  – Rp. 54.783.535.897, BCR = 0,83, IRR = 3,42%, and the third scenario NPV =  Rp. 86.922.386.390, BCR = 1,24, IRR = 9,23%. The results of the feasibility study analysis shown that investment  for the first and second scenarios,  all the parameters indicated the investment is inappropriate to be constructed. The third scenario indicated the investment is feasible to be constructed.  Key Words :  Railbus,  MIA, Feasibility Study, Sensitivity Analysis
Pengaruh Maleated Natural Rubber Terhadap Morfologi Dan Sifat Thermoset Rubber Dengan Filler Abu Sawit - Carbon Black Nanda, Hara Novarisa; Bahruddin, Bahruddin; Fadli, Ahmad
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

Oil palm ash is a solid waste that is generated from the burning of oil palm shell. It was assumed, this material can be a filler to improve the properties of thermoset rubber because it contains elements of silica. It is expected processing the filler to nano size, the filler can blend with (TR) thermoset Rubber for the improvement. This study aims to improve the properties and morphology of natural rubber-based thermoset rubber by using oil palm ash as filler. Nanofiller-making process begins with the conversion of oil palm ash size into nanometer sizes using ballmill.  Variable levels of research was nanofiller (30 and 50 phr), the ratio of palm ash / carbon black (0/100, 30/70 and 50/50), concentrations of coupling agent MNR (maleated natural rubber) 1.3 and 5 phr. Rubber compound made by mixing natural rubber and nanofiller into rollmill with MNR coupling agent, additives ZnO, Stearic Acid, TMQ (Trimethylquinone), MBTS (Mercaptodibenzothiazyldisulfide) and sulfur for ± 50 minutes. After the rubber mastication, molding was done using hot press at temperature of 200oC and pressure of 50 kgf / cm 2 for 10 minutes. Once formed, the thermoset rubber was exposed to some testing which were mechanical properties, namely tensile strength, elongation at break, tension set using the ISO 527-2 standard type 5A with UTM (Universal Testing Machine), Hardness Test, abrasion test, water absorption test. And analysis of SEM (Scanning Electron Microscopy) to depict TR morphology. The results showed the best properties and morphology of TR obtained at 30 phr filler content, 30/70 rasio of palm ash / carbon black and 3 phr MNR content which was 23.214 MPa tensile strenght, 832.641% elongation at break, 1, 77% Tension Set, 58± 5 Shore A Hardness and 0.22 mm3/Kg Abrasion Resistance.  Keyword : Filler Hybrid, Maleated Natural Rubber, Thermoset Rubber, vulcanization
Hidrolisis Mikroalga Tetraselmis chuii Dengan Variasi Konsentrasi Asam Sulfat Dan Temperatur Gilda Miranda; Amun Amri; Syelvia Putri Utami
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

Glucose is a monosaccharide which can be used as an energy source in bio-battery, to produce intermediate products (hydroxymethylfurfural, furfural, levulinic acid, and formic acid), and can be converted into bioethanol. Glucose is a sugar monomer produced after hydrolysis of cellulose and hemicellulose chains in land plants and water plants. Microalgae is a water plant that has a big potential to be converted into glucose. It has been known to use light and various carbon sources to produce carbohydrate. Tetraselmis chuii is a green microalgae, containing a large number of carbohydrate, fat, protein, vitamin, and mineral. As a green microalgae, Tetraselmis chuii has a cellulose and hemicellulose components in its cell wall without a lignin content. This research focused on the hydrolysis of microalgae using variation of sulphuric acid concentration and temperature as variables to produce glucose. Microalgae feedstock was mixed with different concentrations of sulphuric acid between 0.25-1.75% (v/v). Hydrolysis process was conducted under low temperatures at 60 and 70 oC for 30 minutes. The glucose was analyzed quantitatively using Spectrophotometer UV-Vis. The results showed that the highest glucose yield obtained was 48,40% and this was achieved when the hydrolysis occurred at 70 oC with 1.75% (v/v) sulphuric acid addition. This study revealed that the temperature and the sulphuric acid concentration are the important factors during acid hydrolysis of microalgae for glucose production.  Keywords : glucose, dilute sulphuric acid, hydrolysis, temperature, Tetraselmis chuii.
Pengaruh Variasi pH Dan Waktu Pada Pembuatan Bioetanol Dari Sari Kulit Nanas Dengan Menggunakan Zymomonas Mobilis Cece R; Chairul Chairul; Yelmida Yelmida
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

Bioethanol is an alternative energy source that has enough potential to replace fossil fuels. Bioethanol can be produced by fermentation of carbohydrate crops . One of the raw materials that can be used is a pineapple peel. Because today is still a waste of pineapple peel untapped. In pineapple peel contained 13.6 % reducing sugar , so as to have good potential to be processed into bioethanol . One way of making bioethanol is by microbial fermentation using Zymomonas mobilis . The fermentation process is influenced by several factors, including pH and time . This study was conducted to determine the optimum pH and time at fermentation process for bioethanol production from pineapple peel juice. The study was conducted by varying the pH of 4.5, 5.0, 5.5 and 6.0 with fermentation time 14 , 23 , 39 , 47 , 65 , and 71 hours using Zymomonas mobilis microbes . Bioethanol yield analysis using a gas chromatograph (GC). The result is the highest ethanol yield was 3.01% at pH 4.5 and fermentation time of 65 hours. Keyword: Bioethanol, zymomonas mobilis, pineapple peel, yield, GC
Sintesis Zeolit 4a Dari Fly Ash Sawit Dengan Variasi Perbandingan Volume Reaktan Dan Kecepatan Pengadukan R, Yolanda.; Yelmida, Yelmida; Zahrina, Zahrina
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

Zeolit defines as Alumina Silika Crystal which have structure 3 dimension that formed by silica and alumina tetrahedral with three voids dimension content with balanced metal load ions of zeolit bone and water molecule that could move freely. Water content in zeolit’s cavity at least 10 – 50%. If it hidrated, cations that place in that cavity will be cover by water molecule and have unstabilize or release easly as it property. Zeolit 4A is shynthetic Zeolit which have load as cation exchange is Na. To produce zeolit 4A, we need ratio of Na2SiO3/ NaAlO2 = ½. Ratio of Si Oxide and Al Oxide in basic material and temperature reaction will be influence type of zeolit that produced. Shyntesys of zeolit 4A with waste material from a process as feed, which is include some procedure: preparation or pretreatment for feed, forming and gel saving, crystalization. Separation, washing and drying. Purpose of this research to get advantage from fly ash as source of silica as feed for zeolit 4A and learn the influnce of ratio of reactan volume (pottasium aluminat and pottasium sillicate) and rate of agitation. Shyntesys of zeolit 4A doing by mix pottasium silicate and poyttasium aluminat with variation of volume at 40:60 and 60:40 ml/ml and rate of agitation at 200, 250, 300, 350 and 400  rpm until it formed as gel. Then the gel will be heated in oven for 8 hours and washed until the pH netral. After washing process, gel will be heated at 120 oC for 3 hours. Synthesize product analyzed with IR Spectroscopy and Xray Difraction. The best result was got in variation volume at 60/40 and rate of agitation at 400 rpm   Keywords : Xray Difraction, Fly ash, Synthesize, IR Spectroscopy, Zeolit 4A
Optimisasi Penambahan Limbah Drilling Cutting Pada Proses Bioremediasi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

The company ways to maintain its production of crude oil, by drilling new wells and wells that have done some existing treatments. These activities will generate waste, and called with sludge drilling cutting. Characteristics of drilling cutting waste is similar to petroleum-contaminated soil. Based on the Decree of the Minister of the Environment No. 128 of 2003 on Procedures for the Technical Requirements for Waste Oil and Soil Contaminated by Petroleum Biological, waste oil is classified as hazardous and toxic waste ( B3 ) . One way to improve the quality of petroleum-contaminated soil is bioremediation techniques . In the process of bioremediation, microbes in the soil to degrade hydrocarbons that contaminate the soil. In this study drilling cutting waste is added to the oil- contaminated soil samples, which will be processed in bioremediation using naturally existing microorganisms. The results of the most effective and efficient comparison of the addition of contaminated soil and drilling cutting waste is 3:2 and its supported by the pH value of the sample in neutral pH range ( 6,5 - 7,5 ), because the hydrocarbon degrading bacteria can grow well on the pH.  Key word: drilling cutting, TPH, bioremediasi, hidrokarbon.
Identifikasi Parameter Dalam Penentuan Prioritas Penangaan Masalah Sistem drainase Di Wilayah Kota Pekanbaru Menggunakan Metode Analytical Hirearcy Process (AHP) Helfira, Nany; Fauzi, Manyuk; Sandhyavitri, Ari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Pekanbaru city drainage systems generally use a gravity system that depends on the topography area. The topography that relatively flat causes the rainwater drainage system cannot occur properly. Parameter of drainage system problem handling is planned based on the decision-making system method of Analytical Hierarchy Process (AHP) which are: Technical, Economical, Environmental, and Social/Cultural. The results of the AHP analysis with using Expert Choice program 2000 found that the most influential criteria in drainage system problem handling is technical criteria, with 47.9% level of technical criteria, economical criteria 30.8%, environmental criteria 11.2%, and the social/cultural criteria 10.2%. Priority areas in the handling of the drainage system is: Purwodadi Ujung Perumahan Teratai Indah with the percentage level of 53,3%, Jalan Soekarno Hatta (Pasar Pagi Arengka intersection) 31%, and Jalan Riau Ujung (Jalan Riau Ujung – Jalan Soekarno Hatta intersection) 15,7%. The most influence sub- criteria in determining the priority handling of the drainage system are: the capacity of the drainage system network, the availability of budget to funding the annual O & M of drainage systems, coverage of area services, and management and maintenance of drainage infrastructure.Keywords : analytical hierarchy process, expert choice, priority
Simulasi Kolam Retensi Untuk Mengatasi Banjir Genangan Di Kota Bangkinang Bagian Barat Bangun Aldilla Rachman; Mudjiatko Mudjiatko; Trimaijon Trimaijon
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Most of the surface run off water in rainy season in Bangkinang flow to Petai I river, and this condition makes the Petai I river unable to deliver it anymore to Kampar river, it will flood some region in Bangkinang. A concept has been developed according to this condition it devides the raining region into two parts for the Jendral Ahmad Yani street, the east region to Petai I river and the west to Polsek Bangkinang channel. Soil permeability is determined to get a rate of infiltration in the retention pond. Soil samples were taken in the location of research using hand auger and then taken to the laboratory for testing permeability values with permeameter. From the test results obtained by the value of the infiltration is 7.44 x10-7 cm/sec. The retention pond is simulated to reduce debit of surface run off, and at the end it will reduce planned channel dimension, also the lands for drainage channel can be reduced. Retention pond are planned about six retention ponds then simulated by reducing the surface run off water approximately20%, but the retention pond size needed is too big ie between 28,7-5000 hectare, that’s why the retention pond size must be suited with the size of the land. After the making of this retention pond, the debit surface run off so small, and it makes the channel dimension stable. So the making of retention pond in west Bangkinang cant be made as alternetive to reduce the surface run off water. Key words :channel dimension, retention pond, surface run off.
Pengolahan Air Gambut Dengan Teknologi Biosand Filter Dual Media Usman, Ratika; Darmayanti, Lita; Fauzi, Manyuk
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

Clean water fulfillment become a common problem and yet to be solved  especially for isolated countryside area. Clean water can be defined as daily needs water and its quality should fulfill the requirement of healthy water based on laws and can be drinked when it is cooked.  High demand of clean water for peat area community  made this research to be important.   The utilization of simple water treatment system is expected to solve the problem of clean water for the comunity. Treatment method used in this research is biosand filter with dual media of pumice and quartz sand. Water quality parameter tested are pH, color, solution degree, and organic contain (KmnO4). Statistical analysis used in this research is two ways varian analysis (Anova). The result of the research shows that the best arrangement of filtering media layers are pumice at the top and quartz sand underneath it and for the thickness of the filtering media, the best thickness to used is 40 cm of pumice thickness and 20 cm of quartz sand thickness. Dual media biosand filter can generate maximum efficiency in raising pH value of 36,54%, lowering peat water solution level of 88,41 %, lowering peat water color value of 92 ,33 % and also lowering organic content of 93,24 %. Keywords : dual media biosand, peat water, pumice , sand.

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