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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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Profil Muka Air Banjir 25 Tahun Di Sungai Siak Segmen Meranti Pandak Dengan HEC-RAS Rakhmad Ramadhan; Bambang Sujatmoko; Rinaldi Rinaldi
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 area located on the banks of the Siak river, especially the Meranti Pandak Village area, is an area that has the potential for flooding and inundation during high rainfall and the influence of high tides on the Siak river. Floods that occurred in this area inundated several infrastructures such as roads and residential areas. Based on Kompas (2018), floods with a height of 60 cm – 1 m hit residents of RW 02 and RW 12, Meranti Pandak Village. The stages of the research carried out are by analyzing the frequency of rainfall data first, then calculating the planned discharge with HSS Nakayasu, then hydraulic modeling using the HEC-RAS Program, after the flood water level is obtained, the gate and water pump planning are carried out. Based on the results of the analysis of the flood height of the Siak river at the 25-year return period, the flood level in the upstream river, cross section 17 (SC 17) is 19,30 m or -0.90 m from the left bank of the river (non-flooded condition) and 0.30 m from the right bank of the river (flood condition) and the flood face elevation at the downstream (flood condition), cross section 1 (SC 1) is 17,35 m or 1.94 m from the left bank (flood condition) and 1.45 m from the right bank (flood condition).Keyword: flood, rainfall, HEC-RAS
Analisis Neraca Air Lahan Gambut Pada Sub Khg 3 Pulau Rangsang Provinsi Riau Dengan Metode Thornthwaite Mather Untuk Memperkirakan Debit Limpasan Permukaan Gunandar, Arifa; Sutikno, Sigit; Hendri, Andy
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

Rangsang Island is described as a peat island located on the east coast of Riau Province. Due to the high conversion of peatlands, the peat of Rangsang Island is degraded and continuously emits emissions. Efforts to restore degraded peatlands are implementing good water management. In assessing the condition of the peatland water system, this study will analyze the water balance in the Peat Hydrological Unit (PHU) of Rangsang Island to determine the condition and quantity of water contained in the peatland. The model used in peatland water balance modeling is the Thornthwaite & Mather Water Balance (TMWB model). The analysis and discussion will examine the condition of the peatland water balance in the Rangsang Island PHU which is calculated using the land water balance method. From the results of this study, the condition of the water balance of the peatlands in Sub PHU 3, Rangsang Island, is dominantly experiencing deficit months. The deficit months occurred in January, February, March, May, July, August, October and December. The total water deficit is -104.20 M3. While the wet months occur in April, June, September and November. The total surplus of water is 26.15 million m3. The total water deficit for a year when compared to the total surplus of water for a year there is still a big enough difference so that a good and sustainable water-compliant system is needed on peatland Sub PHU 3 Rangsang Island, especially in the Rangsang Island KHG in general in the future.Keywords: Deficit, Peat Hydrological Unit, Peat land, Surplus, Thornthwaite & Mather Water Balance
Analisis Neraca Air Pada SUB-KHG 1 Pulau Padang, Kabupaten Kepulauan Meranti, Provinsi Riau Putri, Tasha Ramadhery; Sutikno, Sigit; Hendri, Andy
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

More than 40% of Padang Island area has been concessioned by the Ministry of Forestry to PT. RAPP. The construction of large-scale canalization of peatland utilization adopted by the company’s concessions causes disruption of the water balance. Research at Peat Hydrological Unit (PHU) Padang Island isnecessary so that peatland protection and restoration become more efficient and effective. The method used in this study is Thornthwaite Mather Water Balance (TMWB). Water balance depicted in a temporal graph showing the deficit/surplus status in every month and Geographic Information System (GIS) used for spatialdata analysis at PHU Padang Island. The results of land water balance analysis in PHU at 2020, shows that the highest drought (deficit) level was in the Sub-PHU 1 on February with the 26.83 million m3. For the highest wetness (surplus) level was in the Sub-PHU 1 on November with 31.34 million m3.Keywords : deficit, Peat Hydrological Unit, surplus, Thornthwaite Mather Water Balance, water balance.
Pengaruh Massa Terhadap Kapasitas Adsorpsi Komposit Berbahan Spent Bleaching Earth (SBE) – Spent Mushroom Substrate (SMS) Sebagai Adsorben Logam Cu2+ Ryan Renaldi; Elvi Yenie; Lita Darmayanti
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

Heavy metal pollution is found a lot in the environment, One of the alternative to reducing heavy metals from industrial waste by using adsorbent composite made from Spent Bleaching Earth (SBE) and Spent Mushroom Substrate (SMS). This study aims to determine adsorption capacity of the SBE-SMS composite against Cu2+ metal ion. This study used variation mass adsorbent 1, 3, 5, 7 dan 9 (gram), and contact time adsorption 60 minute. With adsorbent composition 25% SBE and 75% SMS, concentration artificial solvent Cu 20 mg/L, pH 5 and stirring speed 60 rpm obtained highest adsorption capacity was obtained at a mass of 1 grams with a capacity value of 2,9948 mg/g and the lowest adsorption capacity at a mass of 9 grams with a capacity value of 0,6568 mg/g.Key words: Adsorption, Composite, Spent Bleaching Earth, Spent Mushroom Substrate, Cu2+
Pengelolaan Emisi Karbon Akibat Perubahan Tutupan Lahan Kota Pekanbaru Arsy Dian Puspita Sari; Aryo Sasmita; Gunadi Priyambada
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Abstract

Changes in land cover are the most important factors causing global environmental change. This land cover change causes an increase in gases, especially CO2 gas in the atmosphere, thus becoming one of the causes of carbon gas emissions. The study site is located in Pekanbaru City which is the capital city of Riau Province with a relatively rapid rate of regional development because it is a strategic area. The purpose of this study was to analyze the land cover change of Pekanbaru City in the period 2011–2020 and analyze the value of carbon emissions resulting from changes in land cover. The method used to analyze the value of carbon emissions is the IPCC method. In 2011, the largest land cover was dry land agriculture with an area of 27,31%, plantations covering an area of 24,76%, and settlements covering an area of 24,54% of the entire Pekanbaru City. In 2020, the area of dry land agriculture decreased drastically to 0%, while plantations experienced a fairly high increase in area to 36,07%, and settlements also experienced an increase in area to 51,32%. As a result of land cover changes in Pekanbaru City, for 10 years the estimated value of carbon sequestration is higher than the value of carbon emissions. The carbon absorption value of Pekanbaru City in the 2011–2020 period is 4,879,901,455 tons CO2-eq, while the carbon emission value of Pekanbaru City in the 2011–2020 period is 710,370,804 tons CO2-eq. The highest carbon stock value for each land cover class in Pekanbaru City for the 2011–2020 period, was in 2020 with a carbon stock value of 2,413,271 tons/year.Keywords: carbon absorption, carbon dioxide, carbon emissions, land cover change, Pekanbaru city.
Analisis Wireless Access Point Pada Wifi Dengan Menggunakan Metode Wardriving Di Kecamatan Tampan Kota Pekanbaru (Studi Kasus: Kecamatan Tampan) Wijayanto, M. Rido; Sari, Linna Oktaviana
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Abstract

The development of information technology is currently growing with the growth of human needs, wihich require simplicity, speed and security of access to information wireless tetchnolgoyn network rhas now become an important requiretment ofr the general public, userts who are usuallyfacilitated in public places such as: malls, offices, cafes, hotels, airports, hospitals, educational institutions and places of business and business. wireless network make it easy for users to get internet, wifi network are transmitted via radiio wave frequencies, for communication needs, information or data transfer and other purposess. The wirless network is divided into two frequensces two, 2.4 Ghz which consistes of 14 channels, and a frequenscy of 5 Ghz. The emission tha uses the same channel of frequenscy will experience overlapping interference from the emission of the same channel around it. From a number of overlalpping test point using InSSIDer and Vistumbler, the average signal quality can be produced -64,75 dBm, in good signal quality, and decreased by an average of -25, 25 dBm, so that network performance becomes -90 dBm in quality poor signal, and on adjacent channels the resulting average is -56 dBm, idn good signal quality, and decreased by -23,33 dBm average, so that the signal quality performance becomes -80 dBm, inlow signal quality. This has mild overlapping of many adjacent channel beams, the 5 Ghzfrequensicy test has absolutely no effect on many surrounding channels, the performance is inn good condition without any interference from the surrounding WiFi channel, channel usage in the Tampan District area still uses Frequency 2.4 Ghz with 91 % data results compared to 5 Ghz frequency with 9% result fro 1015 WiFi beam point in Tampan District, it is still fairly largeoverlapping interference in hansome sub-disctrict, from the result s of the comparison of the frequencies used. In terms of security used in the TAmpan District area, a lot of WPA2 securty type are used with 87% and the unknown security side is unknown or WEP 12%, and the WPA securityused is only 1%. The security side of the WiFi used in the TAmpan District is still safe. In terms of security used of the WiFi used in the Tampan Distrcit is still safe.Keywords : Wardriving, Sinyal Strength, Interferency, Mapping, Wirless WiFi
Prarancangan Pabrik Melamin Dari Urea Dengan Proses Low-Pressure Dengan Desain Alat Utama Packed Bed Scrubber (V-101) Syaktia Aryuda; Sri Helianty
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Abstract

Melamine is a chemical compound derived from urea as white crystals that raw material for making glue, household appliances. The estimation of melamine market in 2020 is 1,5.106 tons, and keep growth by 3% until 2026. A melamine plant is a necessity for Indonesia's domestic demand and for decreasing melamine import. We decided to conduct the preliminary plant design for melamine from urea. Our melamine plant has a capacity of 43,000 tons/year in JIIPE industrial park Gresik, East Java. This article is a summary report for Packed Bed Scrubber (V-101), design, one of principle equipment. Based on economic feasibility analysis, the Break-Even Point (BEP) of is 38%; Return On Investment (ROI) is 49%; Internal Rate of Return (IRR) is 26% and payback period (PBP) is 1.6 years. We recommend continuing to detail design this preliminary plant design.Keywords: economic analysis, melamine, urea, factory design
Rancang Bangun Data Logger Kecepatan Angin Untuk 4 Level Ketinggian Berbasis Arduino Awang Bagaskoro; Antonius Rajagukguk
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Abstract

Wind energy is one of the renewable energy sources that can be used as a power plant to meet the needs of electrical energy in an area. The potential for wind energy in an area can be determined based on the wind speed. Each area has a wind speed that varies, depending on the shape of the wind trajectory and the obstacles in the area. Therefore, information about wind speed is needed to see the potential for wind energy in an area. This study tries to design a tool that can record wind speed (data logger) with 4 variations in altitude based on the Arduino microcontroller, where the measurement results from the tool will be stored on the SD Card. Measurement of wind speed with altitude variations aims to see at what altitude level wind energy can be utilized. This research was conducted in the Riau University area starting on March 30 - April 5, 2021. The average percentage error of Final Project anemometer readings is 3% compared to standard anemometer readings. The results of measurements in the Riau University area found that the highest average wind speed was 1.80 m/s. While the maximum wind speed during the study was 6.51 m/s. The highest wind potential occurs on Friday with a power of 11.02 W and wind energy of 140.25 Wattday.Keyword : Energy, Wind Speed, Anemometer, Data logger
Kelimpahan Mikroplastik Pada Sedimen Sungai Air Hitam, Pekanbaru, Riau Rilian Gerry Sitompul; Lita Darmayanti; Gunadi Priyambada
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

Microplastics are plastic sinks measuring <5 mm. Process analysis along on the sediment carried through several stages, namely drying, filtering, sorting visually, the separation of the density (flotation), analysis using a microscope. The most dominate type of microplastic is fragment with a percentage of 49.58%, then film about 27,73%, and fiber about 22,69%. Microplastics in the sediments of the Air Hitam River are thought to come from household waste, disposable plastics waste (plastic bags, plastic bottles, food and beverage packaging), and waste from the tofu industry.Keywords : Microplastics, Abundance, Sediment, Air Hitam River
Analisis Kapasitas Pompa Untuk Penyediaan Air Irigasi Di Kampung Sungai Tengah Kecamatan Sabak Auh Kabupaten Siak Fuad Riyadhi; Siswanto Siswanto; Yohanna Lilis Handayani
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Abstract

Kampung Sungai Tengah has a productive rice field area of about 450 ha. The extent of rice fields is a potential that can support food availability to meet local and regional needs. The government provides long storage to meet agricultural irrigation water needs, but the quality of crop yields is not maximized and land conversion still occurs. This is caused by difficulties in providing irrigation water due to the absence of pumping development from the government and the lack of understanding of farmers about the function of long storage. In addition, the elevation of the water table during the dry season is lower than the elevation of the rice fields. This research was conducted by using various secondary data and analyzing the feasibility of constructing irrigation pumps in the rice fields of Kampung Sungai Tengah. Based on the data analysis, it was found that the availability of reliable discharge (Q80) of the Siak River using the F.J Mock methods was 147.48 m3/s with the largest irrigation water requirement in April period I of 0.88 m3/s. With a very high level of water availability compared to the irrigation water needs of the area, technically the construction of irrigation pump is feasible.Keywords: Irrigation, Irrigation pump, Feasibility, F.J Mock methods

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