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
 34   35   36   37   38 
Pengolahan Sampah Plastik Polypropylene (PP) Menjadi Bahan Bakar Minyak Dengan Metode Perengkahan Katalitik Menggunakan Katalis Zeolit X Ekky Wahyudi; Zultiniar Zultiniar; Edy Saputra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The objective of this research was to convert a waste plastic into liquid fuel using zeolite X catalyst which it was synthesized from coal fly ash. In this study, 100 grams of polypropylene-type plastic were cracked in a batch reactor at 350 400 and 450o C for 60 minutes with various catalyst/plastic ratios was 0.5; 1.0;1.5 (wt%). Highest yield (%) was 76.09% that obtained at 450o C and catalyst/plastic ratio was 1.5%.Keywords : Cracking, Liquid fuel, Polypropylene, Waste plastic, Zeolite X 
Sintesis Hidroksiapatit melalui Precipitated Calcium Carbonate (PCC) dari Cangkang Kerang Darah dengan Metode Hidrotermal Pada Variasi pH Dan Suhu Operasi Wahyu Syafrima; Zuchra Helwani; Zultiniar Zultiniar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Hydroxyapatite Ca10(PO4)6(OH)2 is a calcium phosphate compound which is a bioactive ceramic material with high bioafinitas. Hydroxyapatite (HAp) materials used as bone implants, adsorbents and catalysts. Synthesis of hydroxyapatite can be made by using material which is rich of CaCO3 like PCC blood calm shell with a composition of 95.5% CaCO3. In this research, PCC blood calm shell which has calcium source was synthesized to HAp by hydrothermal process. pH of the reaction (10, 11, 12) and reaction temperature (140oC, 160oC, 180oC) was be varied. The outcome of synthesis was characterized by using FTIR, XRD, SEM. The results of FTIR analysis, synthesis of HAp with hydrothermal method showed the formation of hydroxyapatite in the presence of peaks PO43- dan OH-. The highest peak is obtained at pH 10 at reaction temperature of 140oC, 160oC and 180oC. XRD diffraction results in hydroxyapatite get the highest crystallinity obtained at pH 10 at temperature of 180oC with a hexagonal crystal structure and produce a more pure hydroxyapatite. SEM results showed morphology with clots and irregular round shape.Keywords : PCC blood calm shell, pH, temperature, hydroxyapatite, hydrothermal method.
Pengaruh konsentrasi Chemical Cleaning Agen (HCI Dan Detergen) Serta Tekanan Trans-Membran Dalam Meregenerasi Kinerja Membran Ultrafiltrasi Pada Penyaringan air Gambut
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The main challenge in the use of membrane technology is fouling. This research aims to study the trans-membrane pressure on the flux, studied the effectiveness and efficiency of HCl as chemical cleaning agent and detergents in the regeneration of ultrafiltration membranes in water filtration surgery peat. The study was conducted using ultrafiltration membranes with water bait peat. The method used is by varying the operating pressure of 1 bar and 1.5 bar, variations in the concentration of HCl and detergents 1%, 1.5% and 2%. Peat water filtration process lasted 120 minutes and wash each time is 30 minutes, the highest level of effectiveness of washing detergent obtained 20.77% using 2% and trans-membrane pressure of 1 bar, the highest leaching efficiency based on the value of the flux recovery 82.89 % and based on the resistance value of 22.73% removal. Value highest average flux after chemical leaching obtained 0.48 ml / menit.cm2 using detergent.Keywords: peat water, chemical cleaning agent, fouling, ultrafiltration membranes.
Pembuatan Biodiesel Dari Minyak Goreng Bekas (Jelantah) Menggunakan Reaktor Menbran (Variasi Rasio Molar Umpan Dan Konsentrasi Katalis)
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Membrane reactor is an alternative technology that is used in the manufacture of biodiesel, one of the advantages that the reaction and separation process takes place in a single stage simultaneous. This research aims to study the effect of the variation of the catalyst and mole ratio feed waste cooking oil- methanol in biodiesel production, transesterification process which was held in a membrane reactor with a variation of the mole ratio of waste cooking oil - methanol 1:12, 1:16, and 1:20, the concentration of the base catalyst 1% -wt, 1.5% -wt and 2% -wt, pressure transmembrane 2 bar and a temperature of 60 oC process. The results showed biodiesel production using membrane reactor reached 94.81% yield on the condition of the mole ratio of 1:16 with a concentration of 2 %-wt, characteristics of biodiesel produced meets the quality standards of biodiesel in Indonesia including biodiesel, densityis 850-873 kg/m3, viscosity cinematic of biodiesel 5.12-5.97 mm2/s, Flash Point 150-160 °C, Acid Number 0.55 to 0.64 mg-KOH/g.Keywords: biodiesel, waste cooking oil, membrane reactor, mol ratio, catalyst concentration.
Pembuatan Biodiesel Dari Limbah Minyak Ikan Patin Menggunakan Reaktor Membran Silvia Rahmi; Syarfi Syarfi; Irdoni Irdoni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Membrane reactor is an alternative technology is used to produce of biodiesel, one of the advantages of the reaction and separation process takes place in a single stage simultaneous. This research aims to study the effect of the variation of the catalyst and mole ratio feed catfish oil - methanol in biodiesel production, transesterification process in a membrane reactor with a variation of the mole ratio of catfish oil - methanol 1:10, 1:14, and 1:18, the concentration of the base catalyst 0,5% -wt, 1% -wt and 1,5% -wt, pressure transmembrane 1 and 2 bar and a temperature of 60 oC process. The results showed biodiesel production using membrane reactor reached 93,89 % yield on the condition of the mole ratio of 1:14 with a concentration of 1,5 %-wt, characteristics of biodiesel produced meets the quality standards of biodiesel in Indonesia including biodiesel, density 857,3 kg/m3, kinematic viscosity of biodiesel is 5.6 mm2/s, Flash Point 145 °C, Acid Number 0.549 mg-KOH/g, Cetane Number 53,72.Keywords : biodiesel, catfish oil, transesterification
Pengaruh Konsentrasi Chemical Agent (Detergen, NaOH) Dan Tekanan Trans-Membran Pada Pencucian Membran Dari Proses Pengolahan Air Gambut Secara Cross Flow Rahmi Ayuni Fuadi; Syarfi Daud; Maria Peratenta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Peat water is the kind of surface water that which widely available in the swampy area and lowlands that require more treatment so that can beclassified as a clean water and can be drunk. One of the alternative technology that can be used for peat water treating is membrane technology. The first challenge of the membrane technology is fouling. The purpose of this research is to learn the affectivity and efficiency of the cleaner materials likeNaOH and detergent in the regeneration process of ultrafiltration membrane at the peat water filtering operation. This research was done by using ultrafiltration membrane that the peat water as the feed. The used methodwas cross flow system with variations were pressing operation 1 bar and 1,5 bar and concentration of NaOH and detergent 1%, 1,5%, and 2%. The filtering process of peat water carried on for 120 minutes and the each cleaning time was 20 minutes. The highest of cleaning affectivity was reached 21,14% using detergent 2%. The highest of cleaning efficiency based on recovery flux was 84,88% and based on resistance removal was 21,09%.Key words : Cleaning affectivity, cleaning efficiency, peat water, ultrafiltration membrane
Sawit Off Grade Sebagai Bahan Baku Alternatif Pembuatan Biodiesel Melalui Proses Dua Tahap Menggunakan Katalis Zeolit Alam Yang Dimodifikasi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Palm off grade is a sort of CPO mill utilization wich is not maximized. Palm off grade produced approximately 7-10% of the processing capacity of the plant CPO. Oil-palm off grade has a high free fatty acid contents, so it needs two stage process to produce biodiesel. The purpose of this research is to produce biodiesel with a maximum yield above 90%, determine the effectiveness of biodiesel production using a two-stage process with natural zeolite catalysts and determine the effect of temperature, mole ratio of oil : methanol and the concentration of catalyst to biodiesel yield. In this research, natural zeolite modified using 75% KOH solution. Then, biodiesel production have done in two stage, that was esterification and transesterification with variation of temperature (50°C, 60°C,70°C), mole ratio of oil : methanol (1: 6, 1: 8, 1:10) and concentration of catalyst (2%-w, 4%-w, 6%-w) in transesterification. The result of this research was processed with Response Surface Methodology (RSM) and the number of stepswas determined by Central Composite Design (CCD). The highest yield of biodiesel is 96.99% at temperature 60°C, mole ratio of oil : methanol 1: 8 and concentration catalyst 4%-w. The result showed that the process conditions which influencing the yield of biodiesel is the reaction temperature and catalystconcentration.Keywords: biodiesel, natural zeolite, off grade palm oil, response surface methodology.
Durabilitas Mortar Geopolimer Di Air Gambut Chrisfela Wulandari; Monita Olivia; Iskandar Romey Sitompul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

This research studies the durability of OPC mortar, geopolymer mortar based fly ash and geopolymer mortar based palm oil fuel ash in acidic environment like peat water and netral environment like aquadest. This mortars will testing by mechanics and physical behaviour likes visual inspection and compressive strength after submerged in that water at age 7, 28, 91 and 120 days. The range of pH by peat water are 4,0-4,5. Geopolymer mortar based fly ash and geopolymer mortar based palm oil fuel ash use modulus activator (Ms)= SiO2/Na2O= 1 and %Na2O = 19%. This research show that the compressive strength of geopolymer mortar based fly ash (FA) increase in peat water and aquadest immersion, whereas the compressive strength of geopolymer mortar based palm oil fuel ash (POFA) decrease because the two type of this water immersion. The compressive strength of OPC mortar increase in aquadest immersion, but decrease in peat water immersion. Visual inspection of OPC mortar and geopoymer mortar based POFA changes become brown colored in peat water immersion.Keywords: durability, OPC, fly ash, palm oil fuel ash, geopolymer, peat water, aquadest, compressive strength, pH, alkali activator, and acidic environment
Analisis Kinerja Pdam Tirta Siak Provinsi Riau Kota Pekanbaru Shifa, Indah Kamelya; Sandhyavitri, Ari; Fauzi, Manyuk
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The objectives of this research study were to asses Pekanbaru water supply company (PDAM Tirta Siak) performances during period of 2010 to 2014 based on BPPSPAM Dirtjen Cipta Karya regulation year 2010 and Kepmendagri No. 47 year 1999. Statistical analysis were than dipployed in this study. Four major indicators of water supply company indicators performances were investigated as the following aspecs; financial, services, operationals and human resources. It was identified that based on the BPPSPM regulation an average of this company performances was 2,05 (ill categories <2,2). Mean while based on the Kepmendagri regulation an average of this company performances was 36,01 (not healthy categories <4,5).The reason of these low performances because of the following issues: low human resources skills, high rate of non revenue water(NRW>50%), and low water quality.Keyword :performances analysis, quality, recommendation, water, Pekanbaru City
Keandalan Waduk Tenayan Dalam Memenuhi Kebutuhan Air Bersih Areal Perkantoran Tenayan Raya Aprian Harza; Siswanto Siswanto; Trimaijon Trimaijon
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Tenayan reservoir is a reservoir that built to supply demands of clean water to office areas of Tenayan Raya. Office areas of Tenayan Raya is an area that is planned to be the center of Pekanbaru city government. The central government which had previously been at the center of the city is already too crowded and this displacement can encourage equitable development to the suburbs. It required the analysis of the reliability of reservoir Tenayan. Reliability is known with simulating the availability of water for 20 years with the water demands of the office. The data what used to calculate the availability of water using Pekanbaru station rainfall data for the period 1994 - 2013. The availability of water is calculated by the method of Mock period of 10 daily. Demands of clean water for office simulated for 10 liter/second, 20 liter/second, 40 liter/second, 80 liter/second and 100 liter/second. With the effective capacity of the reservoir Tenayan is ± 840.528 m3, so the results from this analysis is known that the reservoir that able to supply 100 % the water’s demands of office are in simulated extraction of waters for 10 liter/second and 20 liter/second. Reservoir reliability at simulated extraction for 40 liter/second is 95,56%, reservoir reliability at simulated extraction for 80 liter/second is 92,22% and reservoir reliability at simulated extraction for 100 liter/second is 90,97%.Keywords: Tenayan reservoir, storage capacity, water balance

Page 36 of 315 | Total Record : 3145

 34   35   36   37   38 

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