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Riau
INDONESIA
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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Pengaruh Rasio Molar Umpan Terhadap Metanol Dan Waktu Reaksi Proses Pembuatan Biodiesel Menggunakan Membran Reaktor Devi Indra Nengsih; Syarfi Syarfi; Jecky Asmura
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Indonesia is faced with an energy crisis fuel . This condition makes the business opportunity of biodiesel production is still promising . One of the technologies in generating alternative energy is the conversion of Jatropha oil into biodiesel using membrane reactor . This research aims to study the effect of variations in the molar ratio of castor oil with methanol to biodiesel conversion and the effect of reaction time on conversion , as well as studying the characteristics of biodiesel produced . The process of making biodiesel using membrane reactor polypropilen pore size of 0.1 lm diameter with a maximum temperature of 55 º C and a maximum pressure of 1 bar . Variation is the molar ratio of 1:10, 1:15 and 1:20 and the time variation of 1 , 2 and 3 hours . The highest biodiesel yield at a ratio of 1:20 was 97.35 % at the reaction time of 1 hour . Results Characterization of physical properties of blends of biodiesel which meets the quality standards of the kinematic viscosity of biodiesel ranges between 4.01-4,24 cSt and biodiesel ranges 0874-0883 g/cm3 density and acidity rate ranged between 0.56-0.71 mg KOH / g sample . Molar variation affects the quality of the biodiesel produced is at a molar ratio of 1:20 .  Keywords : Biodiesel , Membrane Reactor , molar ratio , reaction time.
Evaluasi Kinerja Kompor Gasifikasi Forced Draft Berbahan Bakar Cangkang Sawit Nini Reflinda R; Sri Helianty
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Oil production in Riau until the year 2011 has reached 35 million tons and production is produced from palm shell of 2.8 million tonnes . Especially in the application of gasification stove for cooking can improve the efficiency of the use of palm shells . This study uses three units of gasification stove with stove dimension 1 ( H1 = 16 cm , D1 = 10cm ) , stove 2 ( H2 = 16 cm , D2 = 12 cm ) , and the stove 3 ( H3 = 20 cm , D3 = 12 cm ) . The fuel used is oil shell with moisture content of 8% , 9 % and 8 % . Method of boiling water test ( WBT ) is used to evaluate the performance of the stove . Additional parameters such as the operating time and temperature flame of the stove as well as evaluate the performance of the stove . The results were obtained an average start-up time of 4.48 minutes and the operation time of the forced draft gasification stoves reached 13.83 minutes . The thermal efficiency of the gasification burner forced draft is approximately 41.49 % to 60.34 % , with the highest efficiency is a stove with a diameter of 12 cm and height 16 cm . Although the resulting fire is still reddish yellow , but the forced draft gasification stoves capable of producing up to 4.42 kWth heat energy with the highest flame temperature reaches 900oC . These results indicate that the operating conditions of forced draft gasification stoves greatly affect the performance of the stove .  Keywords : Shell oil, gasification stove, Thermal Efficiency
Pembuatan Bioetanol Dari Kulit Nanas (ananas comosus l.) Menggunakan Enzim Selulase Dan Yeast Saccharomyces Cerevisiae Dengan Proses Simultaneous Sacharificatian and Fermentation (SSF) Sally Mandari; Elvi Yenie; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

One of energy source alternative that can be used as a substitute for fossil fuel-based energy, is bioethanol. Bioethanol is biochemistry fluid from fermentation process of sugars from carbohydrate sources by using microorganisms. The raw material of bioethanol production is very diverse, like pineapple peel. Pineapple peel can be used as raw material for bioethanol production because contain of fiber, carbohydrates and sugar. This study aims to make bioethanol from pineapple peel with Sacharificatian Simultaneous and Fermentation (SSF) process with cellulase enzyme variation are 1%, 3%, 5%, 7%, and 10% v / v substrate and fermentation time are 2, 3, and 4 days. From the research is obtained the highest bioethanol concentration is 8% on the addition of cellulase enzymes 10% v / v substrate with 3 days fermentation time. Keyword: Bioethanol; Pineapple Peel; Saccharomyces Cerevisiae; Cellulase; SSF
Identifikasi Alternatif Sumber Air Baku Baru Pdam Tirta Dharma Duri YR, Habrio Ilva; Siswanto, Siswanto; Darmayanti, Lita
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

Nowadays, the pure water needs of PDAM Tirta dharma Duri is filled by PT CPI. In the dry season, the water supply is decrease cause about 8614 of costumers get lack of water. In content to fulfil the source of pure water so the company did the survey to investigate water resource around Duri to fill water into the company. This study aims to identify the technical proper of pure water from Jurong I, II, III, Petani and Sam-sam river. Quality of water is analyzed by taking the samples from the rivers then they subjected in physic and chemical parametric. Quantity of water is analyzed by Mock method to find the reliable debit with probability 90%.The finding showed that reliable debit of Jurong I, II, III, Petani and Sam-samriver is 0.743 m3/sec, 1.399 m3/sec, 12.824 m3/sec, 0.13m3/sec, and 1.032 m3/sec. water source quality for Jurong I, II, III, Sam- sam river including on class III, and Petani river on class II.  Key words: Mock Method, Quantity, Water Source,
Aplikasi Sistem Imformasi geografis (SIG) Untuk Pemetaan Pola Aliran Air Tanah Di Kawasan Sukajadi Pekanbaru M Fadhil Nur; Sigit Sutikno; Bambang Sujatmoko
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

Subdistrict of Sukajadi is one of populous subdistrict in Pekanbaru. Most of the resident use ground water as raw material to supporting necessaries of live everyday because water availability of PDAM is not yet good and less gratify . So that need an effort to taking care of availibility of resource irrigate with have monitoring system of ground water use which can be visualizinged in spasial data and its attribute. This research is intended to know the ground water flow model and availability potency of ground water in Sukajadi subdistrict area of Pekanbaru by using GIS (Geographic Information System). Measurement surveys were conducted twice with condition difference of rainfall, rain duration and sum up the dot measure. Its are measuring ground water surface elevastion of resident well therewith location co-ordinate. The results of data processing by computer base on GIS is contour mapping of ground water surface elevation by interpolation process using Spline method. Depiction of the ground water flow model in Sukajadi subdistrict area of Pekanbaru are conducted by drawing diametrical plump line with contour of ground water surface elevation. Generally stream lines of ground water are resulted moving to go to out of the system (Subdistrict of Sukajadi). Availability of ground water in this research location is depended to input from rainwater and recharge area remained.  Keyword : GIS, Spline, Stream lines of ground water, Availability of ground water
Pengaruh Suhu Dan Tekanan Vulkanisasi Terhadap Morfologi Dan Sifat Karet Alam Vulkanisat (Thermoset Rubber) Dengan Filler Abu Sawit / Carbon Black Muhammad Isra; Irdoni Irdoni; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The production of natural rubber increase sufficient good in indonesia, while the natural rubber to be a product with a high valuable price still less developed than other countries. Therefore,we have to eforts it to employing this natural rubber be a product with a high valuable price from the raw material (natural rubber) to be vulcanized natural rubber using vulcanization process. The purpose of this study is to obtain the best conditions of the vulcanization process in the manufacture of vulcanized natural rubber with fly ash/carbon black filler, which is the variation of temperature 140, 150 and 160 °C and preasure of 50,100,150 and 200 kgf/cm2. The results vulcanized natural rubber of will be tested, it’s mecanical properties and morphology. Based on average yield mecanical properties and morphology tested is obtained that the operating conditions vulcanization process is temperature 150 °C and a pressure of 200 kgf/cm2.     Keyword : Natural rubber, Vulcanization, Vulcanized Natural Rubber.
Pemanfaatan Abu Terbang Batu Bara (Fly Ash) Sebagai Bahan Batako Yang Ramah Lingkungan L, Arif Hamidi; Aman, Aman; Drastinawati, Drastinawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The use of coal as fuel in industry gives rise to waste such as fly ash and bottom ash. Fly ash has high content of silica and alumina thus can be potentially utilized as construction materials. Fly ash also contains heavy metals of 8.95 ppm Pb , 5.375 ppm Cu and 7.798 ppm Cr. Disposal of this waste in the ash lagoon or stacked inside the industrial area poses a problem for the environment. In this study, fly ash is utilized as raw material for making brick with cement composition to sand ratio 1:6 and replacement of sand by weight of fly ash with variation of 10 , 20 , 30 , 40 % . Compressive strength and leaching test were conducted after 28 days. The result of compressive strenght test showed that block with a variation of 0 % fly ash produces compressive strength of 115 kg/cm2 , 10 % of 155 kg/cm2 , 20 % of 120 kg/cm2 , 30 % of 120 kg/cm2 , 40 % at 95 kg/cm2. TCLP test results showed that most of the heavy metal content of Pb , Cu and Cr are immobilized so well that fly ash can be used as a mixture of brick that are safe for the environment.  Keyword  : fly ash, soldifikasi, batako
Pengaruh Gelombang Mikro Pada Pretreatment Tongkol Jagung Menjadi Bioetanol Imron Sutiono; Chairul Chairul; Yelmida Yelmida
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Oil production is predicted  decreasing until 20 billion barrels in  2050. The decreasing of oil production will cause efforts to find alternative renewable and   friendly source energy. The one of alternative energy is bioetanol that produced from biomass waste. The Micro wace radiation will give to corn cob as a pretreatment process in this research. Micro wave is expected to break lignin structure in order to get the optimum of etanol. The purpose of the research is to know the effect of micro wave in the pretreatment of corn cob. The corn cob will radiate  on 180 watt through micro wave  with time variation 2,4,6,8 dan 10 minutes, then continued with hidrolisis process using dilute H2SO4 and fermentation process using Saccharomyces cerevisiae. The result of fermentation will analyzed  with Guymon method by using alcoholmeter. The results indicate the highest concentration of bioetanol that  get  from this fermentation process up to 2,5% (25g/l) during 24 hours for the variation micro wave radiation in 6 minutes. The optimum Yield of bioetanol up to 23,67%. The longer time fermentation process and the longer radiation of microwave that is done in this research show that there is no increasing the concentration of bioetanol that we get.  Key word : bioetanol. Microwave, corn cob, Saccharomyces Cerevisiae
Pengendalian Korosi Pipa perminyakan Dengan Menggunakan Inhibitor Korosi Teuku Azhari Hassan; Komalasari Komalasari; Ida Zahrina
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Addition of corrosion inhibitor volume into mixing produce oil and water is the methode to protect the inner pipe that can support reliability of the system. The used inhibitor is a kind of organic inhibitor which is generally contain of amin and used to resist corrosion rate for carbon steel which is a pipe material to distribute mixing produce oil and water. The relationship of fluide flow rate and addition of inhibitor volume is very important to understand. One of its parameter is corrosion rate measurement using corrosion coupon. The purpose of this study is to understand the effect of fluide flow rate and addition of inhibitor volume and to find the best condition of corrosion rate in the system. From the experimental results can be concluded that the highest fluide flow rate can increase the corrosion rate. The addition of corrosion inhibitor volume can resist the corrosion rate. The 2,5 gal/day inhibitor was the best inhibitor volume to resist the corrosion rate at variant fluide floe rate, which is 0,3 MPY for 40.000 bbl/day, 0,44 MPY for 60.000 bbl/day, 0,7 MPY for 80.000 bbl/day. Keyword: fluide flow rate, corrosion inhibitor, corrosion rate
Pencucian Secara Kimia Membran Ultrafiltrasi Sistem Aliran Cross Flow Pada Proses Penyaringan Air Terproduksi Anggi Dwi Saputra; Syarfi Syarfi; Khairat Khairat
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Produced water is water that obtained from the process of oil mining. Based on the characteristic that the produced water is classified as to the wastewater, required treatment before being discharged into water bodies. One of the alternative technologies that can be used for produced water treatment is membrane technology. The main challenge in the use of membrane technology is fouling. This research aims to study the trans-membrane pressure on flux, study the effectiveness and efficiency of NaOH and detergent in the regeneration process of ultrafiltration membranes on operation filtration of produced water. The study was conducted using ultrafiltration membranes by feeding produced water. The method used is by varying the operating pressure of 0.5 bar and 1 bar, variations in the concentration of NaOH and Detergents 0.5%, 1% and 1,5%. Filtration process of produced water lasted for 120 minutes and  each leaching time is 30 minutes, the highest effectiveness rate of 30.55% obtained by using detergent 1.5%, the highest leaching efficiency based on flux recovery value is 69.66% and 30.55% for removal resistance, the highest flux value after chemical leaching obtained 0.8950 ml/menit.cm2 in trans-membrane pressure of 0.6 bar and the concentration of the detergent 1.5%.  Keywords: Cross flow; Detergen; NaOH; Produced water; Ultrafiltration.

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