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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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Produksi Bio - Oil Dari Biomassa Pelepah Sawit Menjadi Bio-Oil Menggunakan Katalis Co/Lempung Dengan Metode Pirolisis Edwidya Ocktaviani Armay; Syaiful Bahri; Yusnimar Yusnimar
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

Petroleum as source of fossil fuels that were not renewable energy and nearly exhausted while the consumption of energy always have been increase time by time. One of alternative energy that can solve this problem is bio-oil from biomass such as frond palm. Bio-oil can be produced through pirolysis process of frond palm using Co/Clays Cengar. The research purpose is knowing effect of the ratio of catalyst Co/Clays Cengar on yield of bio-oil that produced by pyrolisis process from frond palm. Pyrolysis used biomass 50 gram, silinap 500 ml and Co/Clays Cengar catalyst which variated by 0, 1, 3 and 5% wt on frond palm at 330oC and mixed rotation 300 rpm. The results showed that the maximum yield obtained at the level of developing of a metal catalyst Co 1% of the clay that is equal to 50 %. Thetest results obtained by the physical properties of density 1,0042 g/ml, 10,493 cSt viscosity, acid number of 0,42976 g NaOH/g sample and the flash point is 52º C. The results obtained have characteristics approaching the characteristics of standard fuel oil and bio-oil.Kata Kunci : Bio-oil, Co/Clays Cengar, Frond Palm, Pyrolysis
Penyelidikan Kekuatan Tekan Dan Laju Keausan Komposit Dengan Filler Palm Slag Sebagai Bahan Penyusun Kanvas Rem Sepeda Motor Jon Prisno Riduan; Muftil Badri; Yohanes Yohanes
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

Palm slag as waste burning of palm shells and bunches for boiler fuel is available in abundance. Availability of abundant is potential to be developed as a filler of brake composite. The using of palm slag as filler composite non-asbestos brake pads have been studied and potential to be used as a substitute for asbestos brake pads motorcycle. The purpose of this study was to determine the effect of variations in the initial compacting pressure and sintering temperature on the compressive strength and the wear rate of the composite. In this study the manufacture of composite brake using materials with a composition of 40% palm slag, 20% steel powder, 20% phenolic resin, 10% alumina, and 10% graphite. Manufacture of composites using powder metallurgy techniques by varying the compaction pressure at 254, 508, and 762 MPa, and sintering temperatures of 150, 160, and 170oC. Increasing compaction pressure and sintering temperature does not always affect the compressive strength and the wear rate of composite brake. Initial compaction pressure affecting the increase in compressive strength is 508 MPa at 150 and 160oC sintering temperature. Initial compaction pressure affecting decrease the wear rate is 254 and 508 MPa at sintering temperatures of 150 and 160oC.Keywords: palm slag, compacting pressure, sintering temperature, compressive strength, wear rate
Identifikasi Penyebab Kerusakan Valve Pada Mud Pump Type Triplex Pump Menggunakan Metode Fault Tree Analysis Di PT. X Ambri Ambri; Yohanes Yohanes; Yuhelson Yuhelson
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

Failure that occurs in mud pump one of which caused by the mud pump valve while the valve failure caused to three (3) components namely the valve complete, valve seat and valve spring. Such failure would cause mud pump unit can not be operated so as to interfere with the smooth operation of drilling. The research was focused on identifying the critical components of the valve and evaluate the cause of the valve failure with fault tree analysis method (FTA). Data that obtained from the company processed using calculations pareto chart and FTA method. Critical component is a valve 3 i.e valve complete. Valve failure caused corrosion, wear and failure rubber valve.Keywords: failure, valve, FTA
Pengaruh Beban Pendingin Terhadap Temperatur Sistem Pendingin Siklus Kompresi Uap Dengan Penambahan Kondensor Dummy Tipe Trombone Coil Sebagai Water Heater Arya Bhima Satria; Azridjal Aziz
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

Hybrid air conditioning machine with condenser dummy used to solve the problem electrical energy waste and global warming, by utilizing condenser waste of heat that is normally wasted to the environment. The addition of condenser dummy in this research is conducted to see the effect of addition of condenser dummy to the cooling load and temperature. The method used in this research are design methods and experimental. Based on test results, during operation of 120 minutes obtained by hot water temperature 64,33 0C and refrigerant temperature 83,2 0C. When done giving more the cooling load in the room, the refrigerant temperature is also increase so that the temperature of the hot water produced is also increase.Keywords : Hybrid Air Conditioning Machine, Condenser Dummy, Cooling Load and Temperature.
Adsorpsi Isotermal Hidrogen Pada Karbon Aktif Granular Berbahan Dasar Batubara Untuk Aplikasi Penyimpanan Bahan Bakar Pada Teknologi Fuel Cell Jossy Kolata; Awaludin Martin; Nasruddin Nasruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

The limited fossil energy resources and high levels of air pollution led to increased exploration of new and renewable energy sources. Hydrogen has the potential to replace fossil fuels because there is abundant in natural and pollution-free air. The greatest problem in hydrogen is storage methods. Hydrogen storage by adsorption on activated carbon is the best method. Adsorption isotherms of hydrogen on granular activated carbon made from coal with a surface area of 885 m2/g has been implemented by using a volumetric method. Adsorption experiment has been tested at temperature of 45oC and the pressure up to 30 bar. Experiment data in the form of isotherms temperature and variations pressure were calculated to determine the adsorption capacity. Adsorption capacity data were correlated using adsorption isotherms equation of Langmuir and Toth. Adsorption isotherms equation that have result the smallest deviation is the best equation. From the experiment results, the maximum adsorption capacity is 100,91×10-5 kg/kg at isotherm temperature of 45,4°C and a pressure is 29,99 bar. The maximum adsorption capacity occurs at the maximum pressure. Correlation data of adsorption isotherms using the Toth equation has the smallest deviation of 11,73%.Keywords : Adsorption isotherms, volumetric method, adsorption capacity, adsorption isotherms equation.
Rancang Bangun Sistem Pendingin Adsorpsi Dengan Pasangan Karbon Aktif-Metanol Sebagai Adsorben -Adsorbat Hariyono, Hariyono; Martin, Awaludin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

The air conditioning system is used during nowdays is vapor compression system that uses high energy and refrigerant that can damage the ozone layer and global warming increasing. Adsorption cooling system with activated carbon as adsorbent and methanol as adsorbate is expected to replace the vapor compression system that utilizes a high energy, using refrigerants that could potentially damage the ozone layer and the increase of global warming. This study aims to determine the value of COP adsorption cooling system was designed and fabricated. The method used in this research is the design. Method engineering is done for the design, manufacture, and testing of adsorption refrigeration using activated carbon-methanol pair as adsorbent-adsorbate. Based on test data obtained, the lowest temperature of the water coming out of the evaporator is 21.8 °C with the highest temperature change was 2.9 °C and the average water temperature change is 2.31 oC. COP values of adsorption cooling system was designed and fabricated at 0.0439.Keywords : Adsorption, COP, Actiated Carbon, Methanol
Unjuk Kerja Sistem Pendingin Adsorpsi Dengan Pasangan Karbon Aktif-Metanol Sebagai Adsorben-Adsorbat Ivand Hintingo; Awaludin Martin
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 air conditioning system that we used now may contribute to the effects of global warming and high energy consumption. One solution is to use the adsorption cooling system. Adsorption refrigeration system using activated carbon as adsorbent and methanol as adsorbate aims to replace the existing cooling system today. Targets to be achieved in this research is to analyze the adsorption cooling system that can replace vapor compression system that uses a refrigerant that can damage the ozone layer, with vartiation of desorption time and the mass flow rate of water in the evaporator to see its effect on the value of the COP on the system. Adsorbate or refrigerant used in the cooling system is methanol and adsorbent used in adsorption cooling system is activated carbon. The method used in this study is experiment. Experiment method conducted to determine the effect of desorption time variations and variations in the mass flow rate of water in the evaporator to the value of the COP. The highest COP is the variation of water mass flow rate 0,016 kg / s that is 0,099.Key Word : Adsorption, COP, Activated Carbon, Methanol, Desorption Time
Pengaruh Jumlah Cascade Dan Input Daya Terhadap Temperatur Thermoelectric Cooling Box Portable M Akmal; Azridjal Aziz
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

Thermoelectric cooling is heat pump based on peltier effect. The peltier effect occurs when two metals or semi-conductors of different materials are connected and energized that there will be a difference in temperature. This research is to know distribution of temperature on coldsink, heatsink and box. The experiment measuring temperature on 4 point with variation number of active cascade and input power on thermoelectric cooling box portable. It begin with 1 cascade, 2 cascade, and 3 cascade active, then variation input power with 50,5W, 72,72W and 113,64W. The results shows more and more number of active cascade actived, and increasing input power, temperature will colder.Keywords : Thermoelectric, Cascade, Input Power, Temperature
Pirolisis Biomassa Pelepah Sawit Menjadi Bio - Oil Dengan Katalis Natural Zeolit Dealuminated (NZA) Rajib Azri; Syaiful Bahri; Aman Aman
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

Petroleum as a primary energy source at this time, increasingly limited supply. Beside the population growth will lead to the increasing need for petroleum. To overcome these problems needed alternative energy sources that can be updated is one of the bio-oil. Bio-oil produced by pyrolysis process using biomass with warming, in the absence of oxygen. The purpose of this study was to determine the effect of variations in the catalyst on the yield of bio-oil produced, knowing the value of density, viscosity, acid number and flash point of bio-oil as well as knowing the chemical components of the bio-oil by GC-MS method. Pyrolysis uses palm frond as much as 50 grams along with 500 ml silinap with NZA catalysts variation of 0%, 1%, 2%, 3%, and 4% w / w with a stirring speed of 300 rpm and a temperature of 320 º C for 120 minutes. In this penelitiam largest yield obtained on the catalyst NZA 3% variation of 44.4%. Characteristics of physical properties obtained are: density of 0.996 g / ml, 11.733 cSt viscosity, acid number 79.34 g NaOH / g sample, as well as the flash point 58 º C. The results of GC-MS analysis, the dominant chemical components in bio-oil are acetic acid (40.90%); methanol (9.60%); methyl ester (2.30%); phenol (32.88%); 2-furancarboxaldehyde (8.98%).Keywords : Bio-oil, Pyrolysis, NZA, Palm Frond
Penyisihan Logam Pb Air Lindi Tpa Muara Fajar Menggunakan Tanah Lempung Dengan Metode Pertukaran Ion Resty Maiyola; Shinta Elystia; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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Abstract

Landfill leachate treatment at Muara Fajar there are still many obstacles. At the pool fourth treatment, Metal Pb and Cu and hardness concentration is high, so it needs further treatment before being discharged into the environment. The purpose of this research is an alternative water treatment technologies for Muara Fajar landfill leachate, in order that the leachate does not pollute the environment. This research uses ion-exchange column with a clay medium for lower concentrations of Pb, Cu and hardness with high of colom 1.2 m and 2 inches diameter with clay -15 + 20 mesh size, the variation used is the bed height 40, 60, and 80 cm and the discharge flow 80,100, and 120 ml / min. The results of analysis of effluent concentration of Pb metal is 0.41 mg / L, Cu, 0.51 mg / L, and 283 mg / L for hardness. This concentration has reached the quality standard limits the Minister of Environment Decree No. 51 Year 1995 for bed height and discharge flow is 80 cm and 80 ml / min with a CEC of 80 meq / 100g.Keyword : Bed height, Clay, Discharge flow, Ion Exchange, Landfill Leachate.

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