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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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Analisis Kualitas Air Irigasi Persawahan Kampung Pasang Surut Kampung Sungai Tengah Kecamatan Sabak Auh Kabupaten Siak Sudirman, Sudirman; Siswanto, Siswanto; Handayani, Yohanna Lilis
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

Kampung Sungai Tengah rice fields have a functional land area of ± 450 ha of a total land area of ± 800 ha. To meet the needs of irrigation water, the government makes long storage and the people of Kampung Sungai Tengah use water from the Siak River flow. Making long storage serves to collect water at high tide and then at low tide the floodgates are closed so that water in long storage does not flow back into the river. This study aims to analyze the effect of salinity levels in long storage and to analyze whether the distance from the point of collection has an effect on water quality. The parameters of the water quality test are salinity, pH, and water temperature. Field testing was carried out for 3 days with test points at the Siak River, sluice gates, and long storage. The results of field testing showed that water from the Siak River that entered the long storage at high tide experienced an increase in salinity levels with the highest value of 0.03 ppt. This shows that there is an increase in salinity at high tide but the increase is not large and the water is still included in the fresh water category, so that water entering long storage at high tide can be directly used for irrigation purposes without first settling for 24 hours. The pH value obtained during the test was consistent at 6.8, which means the water is still suitable for use for irrigation of rice fields. The water temperature during the test has a value that varies during the test with the highest temperature of 330 degrees which is because the test was carried out during the day with hot sun conditions.Keywords: Water quality, irrigation, salinity, long storage, Anova method
Penyisihan Nh3 Pada Grey Water Dengan Menggunakan Sequencing Batch Biofilm Reactor Kiki Ramadanti; Shinta Elystia; 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

Domestic wastewater based on its characteristics is divided into two type which is black water and grey water. Grey water that directly flowed into the environment is one of the main causes of water pollution. The high content of organic matter causes grey water must be treated. Microorganisms can be use to treat this grey water one of them is microalgae Chlorella sp which consume organic matter as a source of nutrients for its growth. In this study, the addition of the Kaldness 1 (K1) biocarrier as a medium for attaching microorganisms were performed on the Sequencing Batch Biofilm Reactor (SBBR) process. Microalgae Chlorella sp. grown as suspended in grey water and attached to Kaldness 1 (K1). This study aims to examine ammonia parameters in grey water. Variations that use in this treatment are reaction times of 60, 90 and 120 minutes and media filling volumes of 0, 20, 40 and 60%. The best results for ammonia removal was 83% in a reactor filled with 20% Kaldness 1 as biocarrier and a reaction time of 120 minutes.Keywords: SBBR, Biocarrier Kaldness 1, Chlorella sp., Grey Water.
Pengaruh Kecepatan Pengadukan Dan Waktu Pengendapan Menggunakan Sequencing Batch Biofilm Reactor (SBBR) Untuk Pengolahan Limbah Cair Domestik Riri Shania; Shinta Elystia; David Andrio
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Abstract

Greywater is a waste from kitchen, bathroom, and laundry activities that contains high organic matter. The organic matter contained in the wastewater is utilized by the microalgae Chlorella sp. as a source of nutrient and its reduce the pollutant in wastewater. This study aims to count the number cells of Chlorella sp. which grew in suspension and attached to the Kaldness 1 (K1) biocarrier media and the removal of COD in domestic wastewater using Sequencing Batch Biofilm Reactor (SBBR). The SBBR was operated on 4 cycles consisting of 30 minutes of filling time, 120 minutes of reaction, 45 minutes of decanting, and 120 minutes of stabilization time. This research was carried out with a working volume of 5 liters, 30% K1 kaldness media, and 25% suspended microalgae concentration with variations in stirring speed (40 , 60, and 80 rpm) and variation of settling time (30, 45 and 60 minutes). The best results showed a decrease in COD variations in stirring speed of 60 rpm and settling time of 60 minutes, COD removal efficiency was 78% from the initial COD concentration of 288 mg/L to 64 mg/L.Key Word : Sequencing Batch Biofilm Reactor (SBBR), Domestic Wastewater, Chlorella sp., Biocarrier Kaldness 1.
Pengaruh Penempatan Blade Turbin Propeller Di Tengah Blade Turbin Venturi Terhadap Performa Turbin Hybrid Agustinus Agustinus; Iwan Kurniawan
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

Wind turbines are windmills that are used to generate electricity. The basic principle works, namely converting the mechanical energy from the wind into rotational energy, then the rotation of the mill is used to rotate the generator, which in turn will generate electricity. Over time, many turbine innovations have been used. Innovation can be done by fixing existing deficiencies or adding new things so that these products have additional functions. In this research, innovations were carried out in wind turbines. That is, two different types of turbines are combined into one, namely a combination of a conventional turbine (propeller) and a wind ball energy (venturi) turbine. This innovation is made so that the hybrid turbine can work and function at low wind speeds. This research is intended to determine the performance of this hybrid turbine by placing the propeller blade in the middle of the venturi turbine blade and varying the ratio of the length of the turbine propeller blade to the diameter of the venturi turbine. So that the right size and maximum results are obtained in the manufacture of this hybrid turbine. Key words: Hybrid Turbine, Propeller Turbine, Venturi Turbine.
Karakteristik Sifat Mekanis Dan Fisik Tanah Lunak Di Kabupaten Siak Berdasarkan Pengujian Dokenbo Dan Vane Shear Arifan Farhan; Muhamad Yusa; Ferry Fatnanta
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
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Abstract

Soft to very soil is widely encountered in Siak Regency. Physical and mechanical properties of soft soil is very important in the construction. This research was an attempt to characterize the soil properties using portable tools namely, Dokenbo and vane shear. Dokenbo is a in-situ soil testing tool which was recently developed by the Public Works Research Institute in Japan. The Parameterswhich were obtained from the Dokenbo test includes the value of penetration, torque (T0), and the shear angle in the soil (Ø). Vane Shear test was conducted to obtain undrained shear strength in the field. The purpose of this study is to obtain a simple relationship (correlation) between the mechanical properties of using Dokenbo and Vane Shear, and the correlation between mechanicalproperties and soil physical properties. Vane Shear and Dokenbo was used to obtain mechanical properties while physical properties were obtained from laboratory testing. The results then were analyzed using linear regression. The results of the Dokenbo test in this study includes the penetrationvalue in the range from 418 to 1373 kN/m2, the torque value (T0) in the range from 0,3 to 0,65 N.m, and the internal shear angle (Ø) was in the 24o to 60o range. Soil shear strength value from vane shear test results range from 6 to 64 kPa. From the test results obtained, the correlation betweenpenetration and shear strength (Su) has a very strong interpretation, likewise is the correlation between the correlation (T0) and Su. The internal shear angle (Ø) correlation and Su shows no correlation. Meanwhile, the correlation between mechanical properties and soil physical properties has a moderate correlation.Keywords: Dokenbo, Shear Strength, Penetration, Torque, Inner Shear Angle
Karakteristik Aspal Karet Dengan Penambahan Antioksidan Trimethyl Quinoline MS, Frasucia Aquaviva; Irdoni, Irdoni; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
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Abstract

Rubber asphalt modifications are used to produce asphalt roads that are more resistant to high traffic loads and extreme climate change. Natural rubber used can be latex, solid rubber or used rubber. This research aims to determine the characteristics of rubber asphalt with the addition of the antioxidant trimethyl quinoline. In this study the asphalt used is a type of asphalt pen 60/70 Pertamina. Rubber asphalt modifications are made with crepe rubber with asphalt at a mixing temperature of 160˚C for 30 minutes. Crepe Rubber ratios vary 8%, 10% and 12% and the addition of antioxidants TMQ 1%, 2% and 3%. Modification of Rubber Asphalt in accordance with the requirements of Bina Marga General Specification 2012. Rubber asphalt test results showed decreased weight loss and penetration, while mushy spots increased. Based on the results of the study the addition of 10% crepe rubber and 2% TMQ is the most optimal condition with penetration of 68.7 dmm, mushy point 55.45°C and weight loss of 0.059% which is the test result according to the standard. Keywords : asphalt rubber, crepe rubber, penetration, softening point, antioxidant
Perlakuan Dan Pengujian Pasir Sungai Rokan Hulu Bagian Hilir Untuk Memenuhi Standar Pasir Cetak Pengecoran Logam Alumunium Apri, Welli; Fatra, Warman
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Riau Province has a very large potential of river sand because there are many rivers, one of them is the Rokan Hulu river. The sand utilization at Rokan Hulu river has not been optimized yet because it is only used as a building material. One of the potential uses of sand of Rokan Hulu river is as a sand mold for metal casting. The purpose of this study is to obtain river sand that meets the sand casting standards on aluminum casting, by providing several treatments such as adding clay content and moisture content. The characteristics of river sand is by measuring the sand distribution, clay content, moisture content, permeability and compression testing. The test results show that the GFN value of the sand at the downstream Rokan Hulu river is 65.64, which means it has the potential to be used as a metal casting sand mold. The addition of 672 gr bentonite, 1172 gr, and 1672 gr produced clay content in the sand to be 10%, 15% and 20%, respectively. The addition of water of 100 gr, 600 gr, and 1100 gr produces water content in sand to 2%, 7%, and respectively. Permeability testing of 9 (nine) sand samples yields maximum and minimum values of 0.0792 cm / min and 0.04668 cm / min, respectively. Keyword: River sand, aluminium casting, clay content, water content, permeability
Pemanfaatan Tandan Kosong Sawit dan Lumpur IPAL Produksi Minyak Sawit Sebagai Bahan Baku Pembuatan Briket Dengan Crude Gliserol Sebagai Perekat Adi Putra Pratama; Elvi Yenie; Edward HS
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Empty fruit bunch and WWTP mud palm oil production is a source biomass energy which has not been utilized optimally yet. This study aims determine the effect of differences in the compotition of raw materials and the addition of crude glycerol adhesive to the quality of briquettes produced using the carbonization process. The proses of making briquettes in this study with variying variations in the composition of raw material for empty fruit bunch : WWTP mud palm oil production 90%:10%, 80%:20%, 70%:30%, 60%:40% and crude glycerol adhesive concentration 0%, 5%, 10%, 15% from the total weight of 10 gram briquettes. The fixed variatons used are empty fruit bunch temperature of 450oC for 90 minutes, sludge temperature 300oC for 60 minutes, particle size used were less than 100 mesh and pressing preasure 100 bar. Drying is carried out indoors for 24 hours and then oven for 1 hour with temperature 105oC. the result showed that the best briquettes were in the composition of 90%:10% empty fruit bunch and WWTP mud palm oil production with the addition of 10% crude glycerol adhesive in which caloric value of 5244,83 cal/gr and compressive strength of 4,82 kg/cm2. Keywords: Empty fruit bunch, WWTP mud palm oil production, briquettes, caloric value, compressive strength.
Perancangan Instalasi Air Limbah (IPAL) Domestik Di Laundri Dan Kantin Rumah Sakit X Pekanbaru Khatami Achmad; Aryo Sasmita; Muhammad Reza
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
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Abstract

Hospital X in pekanbaru is the hospital of the mother and child special private in pekanbaru. In the process of wastewater treatment, the laundry facilities and cafeteria of the hospital do not enter the treatment process at the wwtp so that still needs further processing in order not to pollute the surrounding environment. It is based on and Permen LH No. 5 2014 the attachment 44 about the Quality of the Raw Waste Water For Business and/or Activities of Health care Facilities. Given the problem, the development of waste treatment facilities that are appropriate and cheap in terms of technology, price and ease of operation is very important. In this paper described the design of the waste water treatment plant (WWTP) with biological treatment to appropriate hospital namely with the process of wastewater treatment biofilter anaerobic aerobic with a capacity of 6,615 m3/day. The results showed that based on the calculation and design that has been made, the WWTP that will be used as a waste water treatment system of Hospital X can be overcome or cope with the problem of environmental pollution. It is seen from the level of the decreased efficiency of processing is quite high, namely BOD 5.35 mg/L (99,4%), COD 33,9 mg/L (98,4%), TSS 1.6 mg/L (99.8% Of), Total Coliform 103,125 MPN/100 mL (99%), MBAS 5,625 mg/L (of 97.7%), and the content of Oil and Fat of 13.5 mg/L (to 97.5%). Budget the cost needed to build a WWTP in the amount of Rp,60.000.000.00,-. Keywords: Aerobic-Anaerobic Biofilter, Hospital Waste Water, Raw Quality
Peningkatan Kuat Tekan Bebas (UCS) Tanah Lempung (CH) Terhadap Penambahan Limbah Bafa (Bottom Ash &Fly Ash) Dan Semen Lala Monang Robert Christian Zega Zega; Syawal Satibi; Soewignjo Agus Nugroho
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
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Abstract

The research aims to increase the compressive strength of soils based on increasing the value of UCS testing. This study uses clay with high plasticity as research objects. Thisis done because the soil type is known to have problems in building construction. The method used is a UCS sample without a marinade which has been compiled accordingto calculations. The mixed samples that have been made are varied based on curing days which are 0 days, 7 days and 28 days with a variation of the cement mixture of 3%and 5% and a mixture of BAFA waste of 4%, 8%, 12% and 16%. a sample naming method is also provided so that it is easy to summarize the results of each test based onplanned variations. Based on the test results that the addition of cement and BAFA increase the free compressive strength (Cu) and compressive strength (qu) of high plasticity soft soil. This increase in value results in an increase in the value of E50 orincrease the stiffness of the UCS sample. The highest increase in UCS occurred in soil with 5% cement and BAFA 16% with 28 days Curing. The increase in qu in the UCS sample was greatest in the variation of sample A-S5-B16-C28 with a value of 94.79 kPa, this increase was 76.57% when compared with the value of qu A which was 22.04kPa. Based on microscopic testing of UCS samples, it can be seen that the higher the level of BAFA and Cement, changes in the structure of the sample look coarser and paler.Keywords : UCS, Microscopic, Cement, Bottom Ash, Fly Ash.

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