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Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
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Articles 3,145 Documents
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Pengaruh Steam Quality Terhadap Produksi Minyak Di PT CPI Fazly, Erwin; Fadli, Ahmad; Komalasari, Komalasari
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

Crude oil is one of Earth product that obtained with various process and lifting method up to surface. Crude oil at Duri field PT CPI within into heavy oil, viscous and contain a lot of sand based on it’s characteristic, so that steam injection into reservoir is needed for making oil mobilization to well production easier. The objective of research to learn about effect of steam quality to oil production in Duri area. Research was held by varying steam generator feed water flow rate of 104 gpm and 105 gpm, steam quality variation of 72%, 73% and 74%. Steam quality sample was taken in each steam generator to be counted, then adjustment of burner positioner was needed when steam quality did not achieve. Oil production data was taken after it’s trend shown steady. Result of research were show that steam quality increment from 72% to 73%, average oil production rose up to 68 bopd and from 73% to 74%, rose up to 18 bopd. The highest steam quality effectivity in 73% at steam generator feed water flow rate of 105 gpm and fuel rate of 8550.57 Mscfd, with oil production rate of 5234.34 bopd.Keyword : reservoir, steam generator, steam quality
Penelusuran Banjir (Stage Hydrograph) Menggunakan Jaringan Saraf Tiruan (Studi Kasus : DAS Siak) Ashral, Ashral; Fauzi, Manyuk; Suprayogi, Imam
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 purpose of this research is to predict the height of water level of Siak River Sub DAS Siak Hulu Pantai Cermin Station in 2012 by using water level data recorded by Sub DAS Tapung Kiri Tandun Station in the same year. This is to search for a more convenient and accurate method in flood routing from all methods that have been applied in the hope that this research can be considered as an alternative method.This research is conducted by using backpropagation algorithm artificial neural network approach with single input and single output as network model configuration. The approach itself uses Matlab 7.8.0.347 (R2009a) as supporting program.This research shows that the results of the training, test, and validation of artificial neural network model have a fairly good level of correlation with the value of R 0.58713, 0.64818 and 0.65933 though not yet provide maximum results. The level of correlation between prediction result with actual data is 0,518.Keywords: flood routing, water level, artificial neural network, backpropagation, tapung kiri, siak hulu
Pola Distribusi Hujan Jam-Jaman Pada Stasiun Hujan Pasar Kampar Adiyka Fasanovri Asfa; Yohanna Lilis Handayani; Andy Hendri
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

In the analysis of flood hydrograph to input of designed rainfall, usually rainfall parameters like as duration and rainfall distribution pattern were not available, but actually the case is very important for analysis. rainfall distribution pattern can be seen in two ways, the first is observation of rainfall events using automatic rainfall recorder and rainfall distribution model.The study using rainfall data from rainfall stations Pasar Kampar, Kampar Regency. The research was done by comparing the rainfall distribution pattern of hourly from observations method with distribution pattern of hourly using rainfall distribution model. Rainfall distribution model used is the Alternating Block Method (ABM), Modified Mononobe, and Tadashi Tanimoto.The analysis showed that rainfall in station Pasar Kampar was dominated by three hour rainfall events. Distribution of rainfall three to seven hours, rainfall distribution model ABM giving out largest deviation compared with distribution model Modified Mononobe, and for the distribution of rainfall eight hours the smallest deviation given by rainfall distribution model. Tadashi Tanimoto.Keywords: rainfall duration, rainfall distribution pattern, rainfall distribution model.
Analisa Besarnya Konstribusi Biaya Tak Langsung terhadap Harga Jual Rumah Pada Perumahan Jenis Cluster Tipe 45 Di Kota Pekanbaru (Studi Kasus : Perumahan Mini Cluster Nirwana Cipta) Sepri Nardi; Rian Trikomara Iriana
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 growth of property business in Pekanbaru creates a good economic growth. In 2011, this sector gives 27,72% income and improve the house demand indirectly. People ask for a good, healthy, safe, and well organized housing for midle people. Mini cluster is one of the choice for the housing, since this type of house combine a simple house with cluster concept, fully equipped with infrastructure facility and a full utility.There are two main fund in building a housing; direct and indirect costs. Direct costs is costs that we need for buiding the physic of the house, while the other costs is costs that we need for facility costs, legal permission costs, planning and economic costs. Indirect costs will be paid by buyers. So, the price paid by the buyers include facility building, legal permission, planning, and economic costs.In this research, writer has identified that the contribution of indirect costs give a big impact in house price and the profit. In percentage, the contribution of indirect costs is bigger than the profit. We can see that from 45/112 type house has 65, 75% for direct costs, 19% indirect costs, and 15, 25% for the profit. While for 45/143 type house, the percentage is 64, 13% for direct costs, 20, 19% for indirect costs, and 15, 68% for the profit. Facilities offered in mini cluster Nirwana Cipta housing are neighborhood street, closed drainage, small park in every unit, street lamp, and gate (one gate system).Key words : direct costs, indirect costs, selling price house, mini cluster.
Transesterifikasi Biodiesel Dari CPO FFA Tinggi Dengan Katalis ZnO Komersial (Pengaruh Variasi Jumlah Katalis Dan Rasio Mol Minyak : Metanol) Mahdi, Khafid Ali; Yusnimar, Yusnimar; Helianty, Sri
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

Crude palm oil (CPO) has a high free fatty acid concentration can be used as a raw material in the production of crude biodiesel. Recently, ZnO compounds are used as heterogeneous catalysts in the biodiesel production. This research was conducted to produce crude biodiesel from CPO with the effect of variations in the mole ratio of reactants and amount of ZnO catalyst. The process of producing crude biodiesel conducted with two stages, esterification and transesterification reactions. Esterification reaction conditions at a temperature of 65°C, mole ratio of oil : methanol (1: 6, 1:12, and 1:18), and amount of catalyst 1%. Transesterification reaction conditions at a temperature of 65°C were used variation of a mole ratio of oil : methanol (1: 6, 1:12, and 1:18), and amount of catalyst (0.3%, 0.4%, and 0.5%). The highest yield of crude biodiesel obtained 96.18% under the conditions of a temperature of 65 °C, the mole ratio of reactants 1:18 and amount of ZnO catalyst 0.5%. Based on results, the crude biodiesel has a density (40°C) 868 kg/m3, kinematic viscosity (40°C) 5.71 mm2/s, a flash point of 164°C, the acid number of 0.72 mg-KOH/g-biodiesel, saponification numbers 20.83 mg-KOH/g-biodiesel and alkyl ester content of 96.56%. These characteristics of biodiesel are suitable to SNI 04 - 7182- 2006 standard.Key words : crude biodiesel, crude palm oil, esterification, transesterification, ZnO
Pembuatan Trikalsium Fosfat Berpori Menggunakan Metode Protein Foaming -Starch Consolidation Dengan Variasi Rasio Bahan Baku Dalam Slurry Dan Temperatur Pengeringan Wan Elsa Novtari Adiani; Ahmad Fadli; Irdoni Irdoni
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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Porous tricalcium phospate has been widely used in the implantation of bone tissue. Protein foaming-consolidation method is a technique for production of porous tricalcium phosphate using egg white as pore creating agent. The purpose of this research was to investigate variation of the ratio of egg white in slurry and drying temperature effects on physical, and chemical of porous TCP by using protein foaming-consolidation method. This research was started by mixing 7 grams of TCP powder, 2 grams of starch, 1,5 grams Darvan 821A, with 5 grams of egg white, 7 grams of egg white and 9 grams of egg white. The slurries were stirred at 150 rpm for 3 hours. Then, the slurries were cast in a cylindrical stainless steel mold and heated at 180°C, 200°C, and 220°C for 1 hour. Subsequently, dried samples were demolded. Next, samples were burned at 600°C for an hour. For the final steps, samples were sintered at 1100°C for 2 hours. Number of egg white and drying temperature increased result in porosity increased and compressive strength of porous tricalcium phospate decreased. This research resulted in porous TCP with 67,6%-78,13% porosity and the compressive strength was 0,14-1,4 MPa.Keyword : compressive strength, egg white, porosity, tricalcium phosphate
Pengaruh Penambahan Wheat Particles Dan Waktu Sintering Pada Fabrikasi Tricalcium Phospate Dengan Metode Starch Consolidation Rathesa Najela; 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

Tricalcium phosphate (TCP) is a porous material that can be used as a bone substitute. One method of making the porous TCP is starch consolidation using wheat particles. This researchaims to determine the effect of composition of wheat particles and sintering time on physical, chemical and mechanical TCP porous prepared by starch consolidation method. Wheat particles with variation of 4 g, 6 g and 8 g mixed with TCP suspension and then stirred for 3 hours. Slurry was dried in an oven at 80oC for 24 hours and 120oC for 8 hours. The dried green bodies inserted into the furnace where the combustion process occured at a temperature of 600oC for 1hour, followed by sintering at a temperature of 1100oC with variation of 1 hour, 2 hours and 3 hours. The results show that more addition of starch cause high shrinkage and porosity with low density and compressive strength. While for long sintering time lead to decline porosity with high shrinkage, density, and compressive strength. Produced sintered body in the addition of starch 4 g with sintering time of 3 hours showed 48.32 % shrinkage with 45.56 % porosity and 5.002 MPa compressive strength.Keyword : compressive strength, porosity, tricalcium phosphate, wheat particles
Kinetika Reaksi Sintesis Hidroksiapatit Menggunakan Metode Presipitasi Dengan Pencampuran Langsung Fadhil Mubarak; Ahmad Fadli; Fajril Akbar
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

Hydroxyapatite is a ceramic material that has chemical composition and crystal structure similar to the human bone, then it iscompatible to use as bone implant. The most one of method that used production of hydroxiapatite is precipitation method. The aim of this research is to determine the kinetics reaction of the synthesis of hydroxyapatite using one drop precipitation method. The research was started with stirred 8.27 grams of CaO in 200 ml of aquadest.Then added with 1,8 M phosphoric acid in to while heated with a temperature variation of 40°C, 50°C and 60°C and stirring rate of 300 rpm. The solution in reactor were taken every 10 minutes by 20 ml volume. Further samples were filtered with filter paper, and then the filtrate was analyzed by complexometric titration. The results showed that the reaction followed pseudo second order equation. Constans of reaction increases with increasing temperature following Arrhenius equation, at stirring rate of 300 rpm obtained k = 1,97e- (13194,4 / RT).Key words : ceramic, hydroxyapatite, reaction kinetic, precipitation
Model Kesetimbangan Pada Adsorpsi Ion Kadmium (Cd2+) Menggunakan Hidroksiapatit Dengan Variasi Suhu Adsorpsi Dan Kecepatan Pengadukan Nissa, Aidina Fahrun
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

Metal pollution of cadmium (Cd+2) waters in causes a huge negative impact to people life. One of the ways to eliminate and minimize the metal content of cadmium is by the process of adsorption. The objective of this research is to study the effect of temperature and string rate as well as determination of equilibrium model in the cadmium ion adsorption using hydroxyapatite (HAp) as the adsorbent. Cadmium (Cd+2) solution with 3 mg/l was added with 0.5 g of HAp in a glass beaker with stirring rate of 100 rpm, 200 rpm, and 300 rpm at temperature 30°C, 40°C and 50°C. Cadmium concentration in the liquid was analyzed using AAS. The adsorption capacity of HAp adsorbent adsorption (Qe) decreased when the adsorption temperature increased. The calculation result of absorption capacity (Qe) at stirring rate of adsorption 100 rpm at temperature of adsorption 50°C, 40°C and 30°C were 0.687 mg/g, Qe 0.690 mg/g and 0.691 mg/g respectively. The adsorption capacity (Qe) of adsorbent HAp increased as stirring rate adsorption increased. The adsorption capacity (Qe) of cadmium at temperature adsorption 30°C for stirring rate of 300 rpm, 200 rpm, and 100 rpm were 1,132 mg/g, 1,023 mg/g, and 1,023 mg/g respectively. Adsorption mechanism of cadmium (Cd2+) with HAp is suitable with Freundlich isotherm model that represent the physical adsorption capacity of the heat of adsorption (ΔH) of -1.665304 kcal/mol.K and entropy change (ΔS°) of 15.76 J/mol. K.Keywords: adsorption, cadmium (Cd2+), equilibrium model, hydroxyapatite
Pembuatan Biodiesel dari CPO ALB Tinggi dengan Katalis ZnO Sintesis dari Presipitan ZnCO3
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

Curently, various types of catalysts have been investigated for the production of biodiesel from high FFA feedstock. Crude palm oil (CPO) has a high free fatty acid (FFA) can be usedfor biodiesel production. This research aims to synthesize ZnO catalyst from ZnCO3 presipitation, then it was used for transesterification of CPO has a high FFA to biodiesel. Theeffect of variations in mole ratio of reactants and the amount of catalyst have been studied in order to get yield of biodiesel maximally. FFA content in CPO was 8.36%. Therefore,Biodiesel production was carried out with a two-stage reaction, esterification and transesterification. The esterification reaction was held at temperatures 65oC with H2SO4 catalyst 1% w/w of oil. The transesterification reaction was held at temperatures 65oC with ZnO catalyst. The mole ratio of reactants were 1:6, 1:12, 1:18, ZnO catalyst amount 0.3%, 0.4%, 0.5% and reacton time 60 minutes. The higest yield of biodiesel obtained was 96.03% under condition ratio mole of reactant 1:18 and amount of ZnO catalyst 0.5%. The biodieselhas density 888 kg/m3, viscosity 5.63 mm2/s, flash point 175oC, acid value 0.64 mg-KOH/gbiodiesel and alkyl ester content 98.51%.Keywords: crude biodiesel, crude palm oil, esterification, transesterification, ZnO

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