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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Core Subject : Engineering,
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Articles 3,145 Documents
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Studi Timbulan Sampah Domestik Di Kabupaten Rokan Hilir (Studi Kasus Di Wilayah Kecamatan Pasir Limau Kapas) Witami, Witami; Yenie, Elvi; Priyambada, Gunadi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Kecamatan Pasir Limau Kapas is an area located at the coast of Rokan Hilir Regency with an area of 1,206.72 km2. It consists of one Kelurahan and 7 Kepenghuluan with a total population of 40,140 people and the Head of Family (KK) 9,718. The types of house buildings in this area are categorized into three types, namely permanent type 414 units, semi-permanent 148 units and non-permanent 10912 units. The number of samples of domestic waste from the type of permanent housing is 5 units, semi-permanent 5 units and non-permanent 19 units. This research was conducted based on the SNI 19-3964-1994 method for eight consecutive days. The average waste generation obtained was from the permanent type (weight 0.276 kg/o/h and volume 2.817 l/o/h), semi-permanent (weight 0.256 kg/o/h and volume 4.040 l/o/h) and non-permanent (weight 0.126 kg/o/h and volume 1.482 l/o/h) with a total domestic waste generation of 7658.196 kg/h. Keywords: Waste pile
Potensi Biogas Dari Sampah Organik Kampus Dengan Biodigester Sistem Kering Lilya Irsianti Fadlilah; Aryo Sasmita; David Andrio
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The volume of waste generation is increasing along with the increasing consumption of the people of the University of Riau every day, where the organic waste material that is processed is 137.16 Kg/day which has an impact on the accumulation of waste, especially at the TPS of Riau University. Therefore, an alternative waste management is needed to reduce the volume of waste that will be transported to the landfill by processing organic waste into biogas through biodigester technology. This study aims to design an appropriate anaerobic digester reactor system to treat the organic waste produced. By using the method of collecting and processing secondary data, then analyzed economically using the NPV (Net Present Velue) method. From the results of the economic analysis carried out, it was found that the selected digester was a dry system digester with an NPV value of Rp. 27,384,143. The dimensions for the biocel reactor are obtained with the following description; length 3 m, width 3 m, height 1,266 m and the number of reactors as many as 15 units and the amount of biogas production per day is 5,706 m3/day. Keywords: Organic Waste, Biogas, Biocel Reactor, NPV (Net Present Velue)
Prarancangan Pabrik Etilen Glikol Dari Etilen Oksida Menggunakan Proses Dow METEOR Dengan Disain Alat Utama Evaporator Ev-101 Lestari Lestari; Sunarno Sunarno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Ethylene glycol is a colorless, odorless hygroscopic liquid with low volatility and viscosity. Ethylene glycol is used as an antifreeze in motor vehicle fluids, polyester fibers for clothing, filmmaking agents, cooling agents and heat exchangers, water-based formulas, and unsaturated polyesters. The purpose of establishing this ethylene glycol factory is to support efforts to save foreign exchange through import substitution of ethylene glycol, and increase employment, as well as assisting in ethylene glycol industry suppliers. Ethylene glycol factory with a capacity of 200,000 tons/year in Batam, Riau Islands. The ethylene glycol production process is carried out through Dow METEOR which consists of 4 stages, namely the preparation of raw materials, the formation of ethylene glycol, the concentration of ethylene glycol, and the stage of product separation. The main device design is evaporator 1 (EV-101), which is used to concentrate the crude glycol output from the reactor (R-101). Based on the economic analysis of the factory, the ethylene glycol plant is feasible to be established with a Payback Period (PBB) of 2 years, IRR 22.738%, Percent Return on Investment (ROI) of 30.59%, and Break Event Point (BEP) of 60%. Keywords: Dow METEOR, Ethylene glycol, Evaporator
Prarancangan Pabrik Fatty Alcohol Dari Cpo (Crude Palm Oil) Dengan Disain Alat Utama Menara Distilasi Methyl Ester Panjaitan, Angga Marusaha Tamba; Rionaldo, Hari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Abstract

Fatty Alcohol (fat alcohol) is a product of CPO processing. Fatty Alcohol is a derivative of vegetable fats and animal oils and is a non-oil and gas export commodity that is needed in various industries such as the perfume, cosmetics, pharmaceutical, food and beverage industries. The need for fatty alcohol continues to increase every year. The import of fatty alcohol has been carried out but the demand for fatty alcohol has not been met. this led to the establishment of a fatty alcohol factory with the main raw material being crude palm oil to cover this need. This factory was built with a capacity of 130,000 tons/year which will be established in Pelintung, Dumai. The fatty alcohol production process is carried out with 3 processes such as pretreatment, transesterification and hydrogenation. The main equipment design in this factory is fatty alcohol distillation which works to separate fatty alcohol as the top product from methyl ester as the base product. The feed, distillate and bottom temperatures in this distillation tower are 170 oC, 160.969 oC and 330.336 oC with a pressure of 1 atm. The fatty alcohol distillation has 11.225 m (441.929 in) high, 1,859 m (73.191 in) outside diameter, and uses skirt support. Economic analysis on the design of this plant shows that this plant is feasible to build with a factory Payback Period (PBP) of 0.93 years and BEP at a capacity of 20 %. Keywords:Crude palm oil, economic analysis, fatty alcohol, hydrogenation, transesterification,
Vaccine Covid-19 Carrier Box Menggunakan Modul Thermoelectric Cooler Dan Heat Pipe Sebagai Alternatif Alat Distribusi Vaccine Covid-19 Stevan Graciano Boyana; Awaludin Martin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Secretary General of the Ministry of Health (Kemenkes) Oscar Primadi stated that the obstacle in distributing the covid-19 vaccine in Indonesia is that there are still many remote areas that are difficult to access by vehiclesthat have cooling rooms such as planes, ships or box cars equipped with refrigeration boxes. In this study discussed about the design of vaccine carrier box using thermoelectric cooler module and heat pipe as analternative distribution tool vaccine covid-19 where thermoelectric cooler used is type TEC2-25408 which is coupling with heat pipe made of copper with working fluid is water. Excellent heat absorption by heat pipe isthe reason for this study. When heat flux heat pipe evaporator operation is achieved and able to absorb heat disposed heat side TEC then the heat side temperature can be maintained constantly, so the workload of TECcan be reduced and the use of the number of peltier elements and power can be reduced. The result of this study is the design and manufacture of vaccine carrier box measuring 36.5 cm x 22 cm x 21 cm based on emptybunches of palm oil capable of carrying 100 vials of covid-19 vaccine in accordance with sop distribution of vaccine 2-8 °C by using peltier elements type TEC2-25408 which is coupling with heatsink heat pipe as acooling system. Based on the test obtained the highest experimental COP value of 0.314 and design COP of 0.364 with a difference of 0.0492 or 13.5 %Keywords: vaccine carrier box, 2-8°C, thermoelectric cooler, heat pipe, COP, saving power
Analisa Pemanfaatan Gas Buang Sterilizer Untuk Menghasilkan Energi Listrik Di PT. Tamora Agro Lestari Sulvan Hardiansyah; Suwitno Suwitno
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

To increase the production capability of palm oil mills, good technical knowledge is required in the operation of the equipment in the factory. With the aim of getting maximum results, do not ignore quality of the resulting production. The first equipment in a palm oil processing plant is a sterilizer. Sterilizer is a pressurized vessel used to boil palm oil. Sterilizer uses steam as a heating medium derived from a steam turbine. After the fruit stew process is complete, then the residual steam from the sterilizer can be used to produce electrical energy so that the remaining boiled steam is not wasted into the environment. The result of study obtained to energy value of high pressure turbine is work 1233.93 KW, the low pressure turbine is work 1389.36 KW. Thermal efficiency of high pressure turbine 48.64%, and thermal efficiency of low pressure turbine 54.84%. From the utilization of flue gas, thermal efficiency increases 6.2%. Keywords: Sterilizer, Steam Turbine, Rankine Cycle.
Kekuatan Awal Stabilisasi Gambut Menggunakan Geopolimer Dengan Variasi Modulus Silikat Ananda, Yazid Fahmi; Wibisono, Gunawan; Olivia, Monita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 9 (2022): Edisi 1 Januari s/d Juni 2022
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Peat is a source of quite a lot of organic matter. The fibrous texture of peat soil makes the soil has low shear strength. To overcome the low bearing capacity of the peat, it is necessary to stabilize the peat soil. Soil stabilization with a mixture of fly ash geopolymer which is rich in silica and alumina is a new innovative material that is more environmentally friendly and can be developed as an alternative to cement. The purpose of this study is to increase the bearing capacity of peat soil and minimize the use of cement in mixture below 250kg/m3 through UCS (Unconfined Compressive Strength) test. The variations of the silicate modulus used in this research were ms 1, ms 1.5, and ms 2 with a concentration of 10M NaOH and a curing time of 7 and 14 days.. The results of the study shows that the hybrid geopolymer mixture could increase the bearing capacity and shear strength of peat with the optimum compressive strength value of 23.96 kPa at 7 days of curing time and the lowest compressive strength of 17.30 kPa at 14 days of curing time.Keywords: peat soil, geopolymer, soil stablization, cement
Perilaku Daya Dukung Gabungan Fondasi Rakit Tiang Pada Tanah Lunak Yolanda Widyan; Ferry Fatnanta; Syawal Satibi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The development of construction engineering science in water and soft soil areas, to overcome the problem of construction on soft soil, a pile raft foundation solution is chosen. Pile raft foundation system is a blend of pile foundation (pile)with a foundation raft, which works in one unit and simultaneously. Analysis of the bearing capacity of the pile raft foundation is carried out by means of laboratory scale testing and then compared with calculations. In the pile raft foundation, variations in the number of piles were used. The method used to calculate the theoretical bearing data using the Terzaghi method, to obtain the carrying capacity of the test carried out an interpretation of the value of the bearing capacity of the foundation taken from the load value at 25mm settlement, in accordance with ASTM D1143-81. The calculation results and test results show that the combined pile raft foundation can increase the bearing capacity of the foundation. The addition of piles to the raft foundation can reduce settlement and increase the bearing capacity of the foundation. The carrying capacity value is calculated and tested based on a decrease of 25 mm, this is done in order to produce the right results. Keyword: bearing capacity, pile raft, settlement
Pemodelan Simulasi Antena Stretchable Untuk Aplikasi RADAR Syahputra, Muclas Habib; Rahayu, Yusnita; Wahyu, Yuyu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Abstract

Current technological advances and developments require the academic community to continue to innovate to build the country by improving science and technology. One area of concern for researchers is Electronics and Telecommunications. Part of the science that is currently quite indemand is the antenna. In this study discusses Stretchable Antenna Simulation Modeling for RADAR Applications, the antenna is designed using Polydimethysiloxane (PDMS) material so that theantenna can be bent and adjusted to its placement. The antenna is made with an Ultra Wideband (UWB) frequency in the frequency range of 3.1 – 10.6 Ghz with a minimum bandwidth of > 500 MHz and a return loss of < -10 dB with a VSWR of < 2, so that the antenna can detect according to radar capabilities because this frequency has wide bandwidth. When this antenna is simulated the antenna can work at a center frequency of 3.4 GHz with a bandwidth of > 500 MHz, then when the antenna is bent it does not experience a significant change in frequency, judging from the bandwidth obtained is the same but the return loss is getting lower to -43 dB but still at a frequency of 3.4 GHz.Keywords: Antena, Polydimethylsiloxane (PDMS), AgNw, Stretchable, Bending, RADAR, Ultra Wideband (UWB).
Perancangan Alat Desalinasi Air Laut Tenaga Surya Tipe Basin Double Slope Kemiringan 45º Dengan Skala Rumah Tangga Benny Wahyudi; Awaludin Martin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The problem of meeting the need for clean water has been a challenge in its own right in the last few decades, not only in Indonesia but also around the world. Fulfillment of clean water needs that are not optimal, especially drinking water, causes the community's need for drinking water not to be met. One solution to this problem is to utilize abundant sea water as a source of clean water for coastal communities by first purifying it. This seawater purification method is known as the desalination method, where the desalinated sea water will be separated from salt and other particles. One type of seawater desalination is the basin type, which is by using a reservoir as a container for storing seawater, then seawater. steam it with heat from sunlight so that the salt content and impurities contained in it will be separated completely because of the difference in each evaporation temperature. The design of a desalination device with a target of 8 liters per day of distilled yield, which will be used as consumption water for household needs, is expected to be a solution to this problem. Keywords: Sea Water, Freshwater, Desalination

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