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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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Pekanbaru Convention Center Dengan Penekanan Bangunan Futuristik Syalam Haryadi; Ratna Amanati; Pedia Aldy
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

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Abstract

Pekanbaru city developed rapidly, becoming a place of activities that support all aspects of the emerging economies in Riau province. The existence of competition in the market to seize, resulting in the emergence of new discoveries. Competition occurs because the needs of the wider community publications. And so we need a container to hold meetings which aim to produce something that can improve a variety of sectors, whether economic, social, and political, even education and entertainment. Meeting the existing building does not stand alone, but part of the hotel buildings and large office buildings. In addition, buildings associated with the activities of the convention no one has the image of an attractive visual appearance. The problem basically is how the format of the building that can accommodate a variety of conventions, the circulatory system of the building, and application of the concept Futuristic at the convention building. The concept raised for the building of this convention is the development of futuristic elements, namely Dynamic Facades, Technological Innovation and Sustainable. The method used is modeling Futuristic forms using computer software and supported by modeling animation techniques to design a dynamic roof notching, the application of technology in the parking system, the formation of the facade that moves through the role of the sensor to the movement of the sun, and all aspects in accordance with the request Futuristic basic concepts and objectives. Designed so that the Convention Center can accommodate a variety of activities that are conventions with the circulatory system of the building are arranged for the convenience of visitors, and in accordance with the concept of futuristic buildings with elements developed, namely Dynamic Facades, Technological Innovation and Sustainable.Keywords: Convention Center, Futuristic Architecture
Kinetika Adsorpsi Pada Penjerapan Ion TImbal (Pb+2) Terlarut Dalam Air Menggunakan Partikel Tricalcium Phosphate Indah Fitriani; Ahmad Fadli; Zultiniar Zultiniar
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

One of the heavy metals can pollute the waters is metal ion of Pb2+. Concentration of ions Pb2+ can be removed by adsorption method. The purposes of this research are to observe the effect of stirring rate and concentration on the adsorption of metal ions Pb2+ using adsorbents tricalciumphsphate (TCP) and determine a suitable adsorption kinetics model. Pb2+ solution (2,736 mg / L, 8,546 mg / L and 14,619 mg / L) of 500 mL were added 1 g of TCP in a glass beaker while stirred with variation of rate (100 rpm, 200 rpm and 300 rpm) at a temperature of 30oC. Pb2+ solution was taken at a certain time, then the solution filtered and analyzed by atomic absorption spectrophotometer (AAS). The result showed that rate of adsorption increased with concentration of adsorbat and stirring rate. Minimum constant value of adsorption kinetic was 0,865 g/mg.min obtained at adsorbate concentration of 2,736 mg/L and stirring rate of 100 rpm. Whereas maximum value of adsorption kinetics constant 3.045 g / mg.min obtained at a concentration 14.619 mg / L stirring rate 300 rpm.Key words : Kinetic, Adsorption, Timbale, Tricalcium phosphate
Pengaruh Penambahan Hidroksiapatit Dan Waktu Pencelupan Terhadap Pelapisan Logam Stainless Steel 316L Dengan Metode Dip Coating Nisa Mulya; Ahmad Fadli; Amun Amri
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

Stainless Steel 316L is metal that can be used as a bone plate, but it has low biocompatibility. To improve the biocompatibility Stainless Steel 316L coating hydroxyapatite is used. Thepurpose of this research was to study the effect of hydroxyapatite addition and dipping time on characterization of Stainless Steel 316L coated with HAp using Dip Coating Method. Metal with a size of 2x1x0,1 cm was dipped into a suspension containing HAp, sago starch and water that mixed with a rate of 150 rpm for 20 hours. The coating was done by varying the addition HAp 8, 10, 12 gr and dipping time of 2, 6, 10 seconds. The dipped Stainless Steel 316L was dried in oven at temperature 110 °C for 10 minutes. Coating HAp were sintered at temperature 800 °C for 1 hour. The research showed with increased HAp addition and dipping time the thickness of the coating HAp increased. With maximum shear strength obtained in this research is 0,24433 MPa.Keywords : Coating, Dip Coating, Hydroxyapatite and Stainless Steel 316L
Pirolisis Kayu Pinus (Pine Merkusil) Menjadi Bio - Oil Menggunakan Katalis NiMo/NZA Irwan Irwan; Syaiful Bahri; Amun Amri
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

Availability of petroleum as a fuel that can not be updated further reduced by increasing the use of oil for human needs. For that we need to do a conversion innovation of energy that do not depend on fossil resources and can be renewable and have an output similar to that produced from fossil resources. One such innovation is the conversion of biomass derived from pine merkusii wood to bio-oil. Bio-oil can be produced by pyrolysis of pine merkusii wood with catalyst NiMo/NZA. Objective this research to produce bio-oil from pine merkusii wood as an alternative fuel, studying the effect of the weight ratio of the catalyst NiMo/NZA to the biomass, studying the effect of metal impregnation Nickel (Ni) and Molybdenum (Mo) on Natural Zeolite deAluminated (NZA) and characterization of physical properties and chemical properties of bio-oil. Process pyrolysis was carried out at 320 0C, silinap 500 ml, 50 grams of biomass with + 100-200 mesh sieve size, variations in the catalyst NiMo/NZA to the biomass of 3%; 5% and 7% by weight and Nickel-Molybdenum metal variation on NZA of 0%; 1%; 2% and 3%. The results of this study produce bio-oil yields the largest on the use of the catalyst NiMo/NZA 5% by weight of the metal content of 3% by 65,076%. Characterization of physical properties of bio-oil obtained in the form of density 0,986 g/ml, 15,816 cSt viscosity, acidity 36,879 mg NaOH/g sample, flash point 48 0C and calorific value 39,12 MJ/kg. While the characterization of the chemical properties of bio-oil using Gas Chromatography-Mass Spectroscopy (GCMS) obtained some dominant chemical components such as phenol (19,42%), toluene (13,48%), tetradecanoic acid (12,93%), phenol,2-methoxy (12,18%), acetone (11,72%), benzene,1,2-dimethoxy (9,30%), and 2-furancarboxaldehyde (3,76%).Keywords: bio-oil, catalyst NiMo/NZA, pine merkusii wood, pyrolysis
Pengolahan Limbah Cair Industri Karet Dengan Kombinasi Proses Pretreatment Dan Membran Ultrafiltrasi Windy Nila Hakim; Jhon Armedi Pinem; 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

The development of new industries can increase prosperity for the people, but had a negative impact on the environment. Industries that produce waste one of them is the rubber industry. Rubber industries produce wastewater containing organic compounds are relatively high. Rubber industrial wastewater treatment needs to be done first in order to tackle pollution. This study was conducted to test the effectiveness and influence of pretreatment process and ultrafiltration membranes in wastewater treatment process of the rubber industry. Wastewater rubber which has been neutralized, in coagulation using coagulant aluminum sulfate (150 mg/l; 200 mg/l; 250 mg/l) with stirring speed of 200 rpm for 5 minutes and 60 rpm for 15 minutes, then allowed to stand for 30 minutes. Waste water sample is filtered then ultrafiltration with variations in pumping pressure (1 bar, 1,5 bar, 2 bar). The results showed the coagulation process is effective at a dose of coagulant Aluminum Sulfate 250 mg/l is 58,71% of BOD5, 59,04% of COD, 35,71% of TSS and 25% of ammonia. The percentage of waste generated rejection increases with increasing pumping pressure of 1 bar to 2 bar. The rejection percentage is 67,30% of BOD5, 67,19% of COD, 88,15% of TSS and 35,71% of ammonia at 2 bar.Key Words: Aluminium sulfate, coagulation, wastewater rubber, membranes, pressure, ultrafiltration
Fermentasi Larutan Glukosa Untuk Produksi Etanol Dengan Teknik Immobilisasi Sel Saccharomyces Cerevisiae Yeni Rizki; Syaiful Bahri; Chairul Chairul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Ethanol or ethyl alcohol (C2H5OH) is an organic compound that is very important in the chemical industry and has many benefits in human life. One way of making ethanol is fermentation. Arising problem in the fermentation process is the inhibition of the ethanol product that will damage the structur of the plasma membrane and cause protein denaturation will result in inhibited microbial growth and lower productivity. In this research, the fermentation process of glucose solution with cell immobilization technique to obtain ethanol at higher levels. This research is aimed to study the process of making ethanol with cell immobilization technique and determine the effect of the initial sugar concentration and fermentation time of the acquisition of ethanol. Fermentation takes place in batch reactor with a volume of 2 liters of fermentation medium, heavy beads of 20% (w/v), pH 5,0. The fermentation process of glucose solution was done at various variation of fermentation time i.e 24, 36, 48, 60, 72, 84 and 96 hours and also various variations of concentration of glucose as the intial sugar i.e 100 mg/ml, 125 mg/ml and 150 mg/ml. The process was stired at speed of 200 rpm and temperature of fermentation at room temperature (25 – 30oC). Ethanol concentrations were analyzed using Gas Chromatography. From the result was obtained that the maximum fermentation process is show at glucose concentration of 150 mg/ml and fermentation time of 60 hours with ethanol concentration of 5,149% (v/v) or 40,647 mg/ml.Keywords : Ethanol, Fermentation, Immobilized Cells, Saccharomyces cereviceae.
Pengaruh Kecepatan Pengadukan Dan Tekanan Pemompaan Pada Kombinasi Proses Koagulasi Dan Membran Ultrafiltrasi Dalam Pengolahan Limbah Cair Industri Karet Selvi ' Angraini; Jhon Armedi Pinem; 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

Laboratory scale studies have been conducted to assess the effect of stirring speed and pressure pumping on a combination of coagulation and ultrafiltration membranes in crumb rubber wastewater treatment. Prior to treatment, neutralization of wastewater in advance using 0.1 N NaOH to obtain a pH neutral in wastewater. The function of neutralization is to optimize the performance of the coagulation process. wastewater which has been neutralized then carried coagulation-flocculation process using a coagulant PAC with a concentration of 100 ppm. Coagulation process is done by varying the stirring speed of 100 rpm, 200 rpm and 300 rpm for 5 minutes and continued with the process of flocculation with a stirring speed of 60 rpm for 10 minutes. Wastewater then allowed to sedimentation for 30 minutes to precipitate the floc-floc had formed. Then the wastewater is separated from the sediment / floc using filter paper. The result showed that the maximum stirring speed in the coagulation process to reduce pollutant load in wastewater rubber is 200 rpm. Wastewater has been coagulated with stirring speed of 200 rpm and then fed into the ultrafiltration membranes with a variation of pressure of 1 bar, 2 bar and 3 bar. The maximum operating pressure ultrafiltration membranes to reduce the pollutant load in wastewater rubber is 3 bar. A combination of coagulation and ultrafiltration membrane able to reduce pollutant load in wastewater rubber with a value of BOD decline is 84.11%, COD is 84.17% , TSS is 95.40% and ammonia is 51.19%.Keywords: Ammonia, BOD, COD, coagulation, wastewater,ultrafiltration membranes, PAC, TSS.
Pemanfaatan Biji Kelor (Moringa Oleifera) Sebagai Koagulan Pada Pengolahan Air Payau Menjadi Air Minum Menggunakan Proses Koagulasi Ultrafiltrasi Riny Afrima Sari; Jhon Armedi Pinem; Syarfi Daud
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

The availability of drinking water which complies the standard requirements of drinking water quality is getting hard to find, it makes the handling of brackish water is needed, so the kelor seed which an be used as natural coagulation is needed. Besides, the development of membrane technology nowadays grows rapidly. It can be used to process the brackish water more effective compared with conventional way. One of the used membrane technology is ultrafiltration membrane (UF). This research is done to find out of the kelor seed’s performance as coagulation and ultrafiltration membrane in processing brackish water to be good drinking water in separatig color parameter, chloride, hardness, organic essence, TDS, pH, iron, mangan, nitrate, chopper, zinc, and sulphate. This research procedure is divided into three stages which are; the first stage is bio coagulation making, the second stage is coagulation-floculation, and the third is filtration using ultrafiltration membrane. The research’s result shows the color isolation, chloride, kesadahan, organic essence, TDS, pH, iron, mangan, nitrate, chopper, zinc, and sulphate of brackish water which has been added with kelor seed’s powder effectively occurs in 350ppm and 2bar pressure can isolate 98,763%, chloride 84,303%, kesadahan 48,989%, organic essence 89,862%, TDS 44,204% pH sebesar 16,867%, iron 91,64%, mangan 89,77%, nitrate 36,58%, chopper 55, 833%, zinc 54,518% and sulphate decreasing to 82,616%, where this result has fulfilled the drinking water’s standard quality based on the rules of health ministry 2010.Keywords: Kelor seed (moringa oleifera), Brackish water, Ultrafiltration membrane.
Analisis Pola Aliran Dan Pola Sedimentasi Pada Waduk Sei Paku Kecamatan Kampar Kiri Kabupaten Kampar Freester, Joy; Mudjiatko, Mudjiatko; Sujatmoko, Bambang
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

The non-uniformity topography of Sei Paku Reservoir caused non-uniform flow in the reservoir, forming unique flow pattern. This flow pattern caused the uneven of flow velocity distribution and sediment distribution in the reservoir. The uneven of flow velocity distribution and sediment distribution can affect the trend of bed configuration changes of the reservoir. It takes a form of a simulation study to determine the pattern and flow velocity distribution, and sediment distribution in the reservoir. In the simulation, topography data, flood discharge, and the water level are processed by RMA-2 that produces flow patterns and the flow velocity. Parameters such as sediment grain size and sediment concentrations are processed by SED2D that produces sediment distribution. The simulation results showed that the flow patterns affect the flow velocity distribution and the sediment distribution in the reservoir so that happen bed configuration changes of the reservoir. The bed configuration of Sei Paku reservoir classified by simulation results in “Anti Dunes” phase where upstream side suffered deposition while downstream side suffered erosion.Keyword: Simulation, flow pattern, sedimentation
Perbandingan Harga Plat Lantai Ruko Antara Plat Lantai Konvensional Dan Plat Lantai Steel Decking (Case Studi : Area Pekanbaru) Andika Leneldo; Hendra Taufik
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

Many flats house in the city of Pekanbaru was increased rapidly, however process is still using conventional methods. Conventional method by using formwork systemdisassembly, such as wood and plywood, so make the costs are relatively larger. In research have plan to eliminate of wood or plywood thein and the cost of implementation. composite steel decking methods used with smartdek type.The analysis was focused on the structure of plate (floor) with dimensions 4x20 meters, 5x20 meters and 6x20 meters. As a resuld, there are differances implementing cost between the conventional method and composites method. The plate withdimensions 4x20 meters consume Rp. 46,241,787 by using conventional method, - and result by composite method consume Rp. 35,873,777.for plate with dimensions 5x20meter, result analysis by conventional method consume Rp. 57,958,191 and the composite method consume Rp. 46,820,138 while the dimensions of 6x20 meters consume Rp. 69,781,416 by conventional method and Rp. 61,361,015 by composite method. The conclusion : (1). Comparison Price of structure plate between method and composites method conventional for the dimensions of 4x20 =1:1.289, the dimensions of 5x20 = 1:1,238, while for the 6x20 = 1:1,137. (2) Effectiveness comparisons price of composites and conventional floor plate (steel decking) the dimensions of 4x20 = 22.42%, plate with dimensions 5x20 = 19.22%, and for the dimensions of 6x20 = 12.07%.so result the paper more effective using composite plates.Keywords: the conventional method, the cost of implementation, composite methods, steel decking, smartdek, floor plate.

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