cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota pekanbaru,
Riau
INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
Arjuna Subject : -
Articles 3,145 Documents
 15   16   17   18   19 
Adsorption Isothermal Methane Gas With Mass Flow Rate of 10 SLPMand 20 SLPM For Adsorbed Natural Gas Storage Irfandi Pratama; Awaludin Martin; Nasruddin Nasruddin
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The increase energy needs along with the times resulted in the availability of energy derived from fossil fuels thinning. Utilization of natural gas as a potential replacement for fossil fuels because of national gas production shows increase.Natural gas as a  replacement for fossil fuels constrained in the storage process,  storageis oftenusediscompressed  natural  gas(CNG) andliquefied naturalgas(LNG). CNG storage constrained at high pressure (20 MPa) and LNG constrained in gas liquefaction process that requires  extremely low temperatures     (-161.5°C).Adsorbed natural gas (ANG) is a solution to reduce the pressure in the tube of about 3,5 to 4 MPa by utilizing the process of adsorption using activated carbon.Adsorptionmeasurement use volumetric method (isothermal) at temperatures  25oC with 10 bar pressureand variation of the mass flow rate (10 standard liter per minute and 20 standard liter per minute).The purpose of this study was to obtain data of methane (CH4)  stored and out (stuck) on the storage and also to  see temperature phenomena that occur in storage.From the test results,  the massof methane storedat10SLPMis33,19gram and20SLPMis43,63gram.As for themethanegasthat isstuckat10slpm is7,09gramand20slpmis16,54369gram. Keywords:Adsorbed Natural Gas, Volumetric methode , Adsorption Isothermal
Simulasi Cfd Ang Storage Dengan Metana Sebagai Adsorbat Dan Karbon Aktif Sebagai Adsorbennya
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Increased air pollution and fuel price volatility to the attention of the world that began to study alternative energy sources. Natural gas is an alternative that can replace fuel, natural gas used was methane. There are 3 natural gas  storage process LNG, CNG and ANG. LNG  requires extremely low temperatures  to  liquefy  the methane  gas whereas CNG  requires  a very  high pressure of 200 bar for storing methane, both of these processes require a very expensive cost, whereas ANG only requires a pressure of 4 bar for storing methane so that ANG is an excellent alternative possible. ANG process has been studied experimentally, while the simulation is still very  rare. This study uses  the simulation computational fluid dynamics (CFD) for  the ANG. This  modeling  using Fluent.  From this  simulation  can be obtained  the distribution of temperature, pressure, adsorption capacity and adsorption rate of capacity during the adsorption process occurs. The study was conducted at a pressure of 30 bar and a temperature of 300 K, in order to obtain the result of pressure and temperature distribution are influenced by the UDF equation  source  terms and methane gas adsorption capacity at the  time of 54000  seconds  is 0.069797 kg/kg, and the rate of adsorption at the time of 54000 seconds is 5.1x10-9kg/kg.s. Keywords: Simulasi, CFD, Fluent, Adsorpsi, ANG, Karbon aktif
Pengeringan Beku Vakum Bengkuang Dengan Memanfaatkan Panas Buang Kondensor Untuk Proses Sublimasi Brama, Jaka; Martin, Awaludin
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Vacuum Freeze Drying  is one of the best ways of drying products as  freeze drying vacuum drying or  preserving  materials  without  a change in  physical and chemical properties  of materials.  This study was  a continuation of  previous  studies  that  vacuum  freeze drying jicama.  The results  of  previous studies  which  can  eliminate  62% moisture content  for 24 hours. This current research  is  to optimize the vacuum freeze drying previous  to adding  the heater exhaust condenser to the sublimation process.Condenser waste heat with temperatures reaching 40 ° C flowed dryer chamber and propagated on the  jicama to speed up the process of sublimation.Keyword: freeze drying vacuum, waste heat recovery condenser, jicama
Estimasi Kapasitas Dan Titik Berat Pada Pembuatan Kapal Jaring Tradisional Di Galangan Kapal Bagan SiapiApi Kabupaten Rokan Hilir Menggunakan Software Autodesk Inventor 2010 Pindo Evans Manuel Damanik; Yohanes Yohanes; Muftil Badri
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Jaring ship building in Bagan Siapiapi Kabupaten Rokan Hilir Riau in general is traditionally. One example that still use the traditional way is how to determine the capacity and center of gravity. In estimating the capacity and gravity in Bagan Siapiapi Kabupaten Rokan Hilir Riau is not accurate so as to anticipate it, Bagan Siapiapi  community change the shape and size of the vessel at the time of testing The purpose of the study to estimate the capacity and center of gravity in Bagan Siapiapi. This research is a study case method that uses a single fishing vessel industry is in Bagan Siapiapi. Jaring’s ships  measured ship's main dimensions, construction Linggi, keel construction, joist construction, foundation construction machinery, building construction on the upper deck, and wood density testing, subsequent construction of ships drawn using Autodesk Inventor 2010 software. Capacity and center of gravity jaring ship calculations using Autodesk Inventor 2010 software. From the data processing capacity of jaring Bagan Siapiapi Chart for 7.093 kg and an emphasis on jaring ship Bagan Siapiapi is at position: (1) unloading condition (0,9  mm; 888,5 mm ;-162,5 mm) the front view with the tilt angle of the ship experienced a shaky  89,24o and  -84o side view (2) maximum load condition  ( 0,7 mm; 976,7 mm;  -600,4 mm) the front view with the tilt angle of the ship experienced a shaky -89,8o and side view 80,03o.Keywords: jaring ship, capacity, center of gravity, construction
Adsorption Kinetics Study of Cr (III) Metals Using Activated Natural Zeolite Retno Khimantoro; Sunarno Sunarno; Silvia Reni Yenti
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Several methods have been developed to reduce and minimize the presence of copper heavy metals that pollute waters, such as by adsorption method, is one of the natural  zeolite material is widely used as an adsorbent. Natural zeolites have potential as adsorption heavy metals in waste water treatment due to adsorption capacity and high selectivity, long-lived, and the numbers are abundant in Indonesia. Research studies of metal adsorption kinetics of Cr  (III) with activated natural zeolite aims to determine a suitable kinetic model for metal adsorption kinetics of Cr  (III) with activated zeolite  adsorption evaluate the metal Cr  (III) and the effect of temperature on the adsorption rate constant. This study begins with the activation of natural zeolite in physics and chemistry and to be continued to Cr  (III) metal adsorption by activated natural zeolite with a variety of contact time and temperature. Results spectrophotometer adsorption measured using atomic absorption (AAS). From the research that has been done shows that a suitable model for the kinetics of adsorption of metal Cr  (III) with zeolite activated following the model of first  order with a value of k= 0,011  min-1 for a temperature variation of 300C, 400C, 500C. From the results obtained conclude that the higher the temperature will be faster the rate of adsorption and the amount of activation energy values obtained in the amount of 296,73 J/mole, which means that  the adsorption process takes place in physics. Keyword: adsorption kinetics, Cr (III) metal, natural zeolites, adsorption .
Konversi Pelepah Nipah Menjadi Bio - Oil Dengan Variasi Katalis NiMo/Lempung Cengar Memalui Proses Pirolisis Surya Romadani; 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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Bio-oil is one of the alternative energy that can be used as a substitute for petroleum. Riau has huge potential in Nipah and clay which not be used widely. Bio-oil can be produced through pyrolysis process  of Nipah  with catalyst  NiMo/ Cengar Clay. Theaimings of this study is to determine the effect of variations in catalyst NiMo/ Cengar Clay and characterize the physical and chemical properties of the yield of bio-oil produced. In this study the pyrolysis  process carried out at 320 °C of temperature,300 rpm  stirrer speed, 500 ml  of silinap and50 grams of biomass  in +100-200 mesh size.Variation of the catalysts are0, 0.5, 1.5 and 2.5 % w/w. The results of this study indicated that the optimum yield was obtained in 0.5 % catalyst NiMo/ Cengar Clay, which is 63.64 %. The analysist  results of the physical properties of bio-oil are density of 0.884 g/ ml, 9.486 cSt of viscosity, 47.92 gr NaOH/100 gr sample of acid number, 45.47 MJ/Kg of the calor value, and 54°C of flash point. The results of chemical analysis by GC - MS , obtained some chemical components such as Acetic acid, Butyric Acid, 2,2-Dimethoxy-Ethanol, Furfural , 4-Hydroxy-Butyric Acid, Phenol, O-Cresol , 2-Methoxy-6-methyl-phenol and catechol. The  characteristic  results  have been  obtained  is approaching the characteristics of fuel oil and bio-oil standard. Keywords : Bio-oil, pyrolysis, Nipah and NiMo Catalyst/ Cengar Clay
Analisis Pengaruh Parameter Permeabilitas Smear Zone Terhadap Penurunan Konsolidasi (Studi Kasus Di PLTU -Pekanbaru, Riau) Ariza, Ariza; Satibi, Syawal; Fatnanta, Ferry
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Vertical drain is soil improvement method that aims to reduce the pore water pressure in soft ground so as to accelerate the consolidation process and time reduction in water-saturated soft soil. Tools vetikal precast drainage installation (Prefabricated Vertical Drain, PVD) is called a mandrel with a diameter of 60 to 70 cm2. Installation PVD candisturb the arrangement of soil around the walls of the mandrel, there by reducing the permeability of the soil that can slow down the process of consolidation. This study analyzes the disturb smear zone permebilityof consolidation settlement.This research showed the influence of smearzone permeability (kh/ks) very influence of consolidation settlement. Keys word :Vertical drain, Smear zonepermeability
Pengaruh Kadar Lempung Dan Kadar Air Pada Sisi basah Terhadap Nilai CBR Pada Tanah Lempung Kepasiran (Sandy Clay) Muhammad Iqbal; S A Nugroho; Ferry Fatnanta
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

CBR (California Bearing Ratio) is one method for determining the bearing capacity of the subgrade . In highway planning , subgrade bearing capacity will affect the pavement thickness, the higher bearing capacity of subgrade makes the pavement thickness which needed to withstand the traffic load is getting thinner. Research conducted at the Laboratory of the CBR value is generally only done on the condition of the water content in a state of OMC and saturated, this study investigated the changes of CBR value with moisture content in the range of OMC to saturated of the sandy clay soils, and with clay in different contents. The results of this study indicate that, when the soil is compacted at OMC conditions, increasing contents of clay reduce CBR values, and submersion decreases CBR values of 14,294% at the top of sample and of 13,167 % at the bottom of sample. When soil is compacted with moisture content above OMC, increasing contents of water reduce CBR values.  Key Words: CBR, clay, water content
Pengaruh Kadar Lempung Dengan Kadar Air Di Atas OMC Terhadap Nilai CBR Dengan Dan Tanpa Rendaman Pada Tanah Lempung Organik Khairatu Zaro; Soewignjo Agus Nugroho; Ferry Fatnanta
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Strength and durability of road pavement depend on engineering properties of subgrade. However, soils used as subgrade may not satisfy the required quality. Peat or organic soils is not to advantage of construction because bearing capacity or value of peat soil’s CBR is low. This paper intends to find out more about CBR value of organic soils on OMC and saturated condition . This research investigated the changes of CBR value with moisture content in the range of OMC to saturated. And influenced percentage varied of peat in mixture organic soils (clay and peat). The result of this study showed that for increasing of peat content reduce  CBR values at OMC condition. CBR value  in addition 10% of peat decreased CBR significantly  to 2,88 %  as compared  to original soil (clay) is about 23,88%.  And when compaction of soils with water content above OMC,  incresing content of water reduce  value of CBR.  Key Words: CBR, water content, peat
Korelasi Antara Nilai CBR Dan Nilai Kuat Geser Sebagai Tanah Timbun Albajili, Farian; Fatnanta, Ferry; Nugroho, Soewignyo Agus
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In constructing the roadway, subgrade is the important part to supporting the whole traffic load/construction load above. The bearing capacity of subgrade influences the flexible pavement, if bearing capacity is higher, then the application of flexible pavement is fewer to support the traffic load. Subgrade is affected by type of soil, density of soil, water content and others (Hendarsin, 2000). Generally, design of parking area uses the geometric design of road method. This case is inappropriate with actual condition, because the load support to parking area is static load. Nowdays, parking area planning uses CBR's data, while CBR is used to dynamic load estimation. Therefore, this research will be doing study about correlation between CBR value and UCS. Keyword : CBR, UCS, correlation

Page 17 of 315 | Total Record : 3145

 15   16   17   18   19 

Filter by Year

2014 2022


Reset
Filter By Issues
All Issue Vol 9 (2022): Edisi 1 Januari s/d Juni 2022 Vol 8 (2021): Edisi 2 Juli s/d Desember 2021 Vol 8 (2021): Edisi 1 Januari s/d Juni 2021 Vol 7 (2020): Edisi 2 Juli s/d Desember 2020 Vol 7 (2020): Edisi 1 Januari s/d Juni 2020 Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 Vol 6 (2019): Edisi 1 Januari s/d Juni 2019 Vol 6 (2019): Edisi 1 Januari s/d Juni 2019 Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 Vol 5 (2018): Edisi 1 Januari s/d Juni 2018 Vol 5 (2018): Edisi 1 Januari s/d Juni 2018 Vol 5, No 1 (2018): Wisuda April Tahun 2018 Vol 5, No 1 (2018): Wisuda April Tahun 2018 Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017 Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017 Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016 Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016 Vol 3, No 1 (2016): Wisuda Februari Tahun 2016 Vol 3, No 1 (2016): Wisuda Februari Tahun 2016 Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015 Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015 Vol 2, No 1 (2015): Wisuda Februari Tahun 2015 Vol 2, No 1 (2015): Wisuda Februari Tahun 2015 Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014 Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014 Vol 1, No 1 (2014): Wisuda Februari Tahun 2014 Vol 1, No 1 (2014): Wisuda Februari Tahun 2014 More Issue