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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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Katalisis CPO Menjadi Biodiesel Dengan Katalis ZnO Sintesis Presipitan NaOH Mukhlisoh Arifah; Sri Helianty; Yusnimar Yusnimar
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

Biodiesel is an alternative renewable and biodegradable fuel with properties similar to petroleum diesel. It result of the conversion of vegetable oils derived from both non-foodand food ingredients which have economic value compared to fossil fuels. Heterogeneous catalysts such as ZnO in the manufacture of biodiesel can solve the problems of the use ofa homogeneous catalyst that can reduce the burden of separation, cheap, stable, and can be used repeatedly. This research aims to synthesize ZnO catalyst by precipitation method using NaOH. Then, the effect of variations in mole ratio of reactants and variations in the amount of catalyst on the yield of biodiesel produced will be studied. FFA content in thefeedstrock is 8,36%. Therefore, Biodiesel production process is carried out with a twostage reaction that is esterification and transesterification. The esterification reaction washeld at temperatures 65oC with H2SO4 catalyst as much as 1% w/w of oil. The transesterification reaction was held at temperatures 65oC; with H2SO4 catalyst as muchas 1% w/w of oil. The mole rato of oil : methanol are 1:6, 1:12, 1:18; ZnO catalyst amount are 0,3%, 0,4% and 0,5%; reacton time is 60 minnutes. The higest yield obtainedis 93,6% in process with 1:18 in oil : methanol mole ratio and 0,5% catalyst amount. The produced biodiesel has density 888 kg/m3, viscosity 5,63 mm2/s, flash point 175oC, acidvalue 0,53 mg-KOH/g-biodiesel and alkyl ester content 99,1%.Keywords : Biodiesel, CPO, esterification, transesterification, ZnO.
Evaluasi Sistem Distribusi Air Bersih Menggunakan Epanet 2.0 (Studi Kasus : Pdam Tirta Dharma Cabang Bengkalis) Prayoga Wiguna; Jecky Asmura; David Andrio
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

The Water Supply Company (PDAM) Tirta Dharma Bengkalis is a company engaged in the drinking water services, it is required to improve its service to the community in Bengkalis. The aim of this study were evaluating the existing condition of the distribution. The pressure condition of the distribution network still able to serve the needs of the service area with the residual pressure > 0.5 atm or 5 meters. From the Headloss condition, nothing criteria over the limit is above 10 m / km. Whereas for the speed condition of the distribution network, a lot of pipes do not meet the standard minimum criteria which is > 0.3 m / s, but not all the pipe need replacement especially for the main pipe with the consideration of the provision of sufficient pressure in case of the additional needs in the future. Based on the research finding, it needs preventive, so it can fulfill the future needs considering the increasing of the population that can not be avoided.Keywords: Evaluation, Water Distribution System, Modeling, EPANET 2.0
Pengaruh pH Terhadap Penyisihan COD Pada Pengolahan Campuran Limbah Cair Tahu Dan Kotoran Sapi Secara Anaerob Rahmi, Intan Sri; Andrio, David; Veronika, Nina
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

Tofu wastewater and cow dung are a waste containing high concentrations of organic compounds COD is 3305 mg/L and 10730 mg/L . To minimize the environmental pollution caused by tofu wastewater and cow dung , the waste should be processed . Processing the right to treat high concentrations of organic waste is anaerobic processing . This study aims to determine the effect of pH on the rate and efficiency of COD in tofu wastewater and cow dung . The study was conducted by varying the pH in the range 4-5 ; 6-7 ; 8-9 . The results showed the largest total COD removal occurred in the reactor acidic ( pH 4-5 ) with allowance rate of 3354.7 mg / L / day and 69.8 % removal efficiency.Keywords: Anaerobic processes, cow dung, tofu wastewater, COD
Pemilihan Teknologi Daur Ulang Effluent Limbah Cair Rumah Sakit Untuk Memenuhi Kebutuhan Air Bersih Pertamanan Dan Kegiatan Non-Potable Novalina Annisa Yudistira; Jecky Asmura; David Andrio
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Conservation of water resources need to be carried out by large-scale water users, such as hospitals. One of the conservation efforts is recycling wastewater. Recycled water can be used to fulfill the needs of landscape irrigation and non-potable activity in hospital. The one of methods for wastewater recycling design is selecting of alternative technology and processing. Several things which need to paid
Pemanfaatan Limbah Pabrik Kelapa Sawit Sebagai Kompos Dengan Variasi Penambahan Dosis Abu Boiler Serta Penggunaan Bioaktivator EM-4 Putra, Anggara; Yenie, Elvi; Elystia, Shinta
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

Palm Oil Mill Effluent treatment produces sludge as byproduct. Without being processed, the sludge will cause damage to environment and industry. The aim of this research is to convert the sludge, combined with boiler ash and palm oil fiber and litter of dry leaves into compost by using EM-4 as the activator. The instrument needed is a simple composter with height 40 cm and diameter 30 cm. The variations of the boiler ash dosage are 1 kg, 1,5 kg and 2 kg and the variations of composting time is 21 days in order to analyze the compost quality produced. The research showed that compost with 1 kg boiler ash dosage processed for 21 days resulted to a C/N ratio that meets SNI’s requirement 19-7030-2004 C/N ratio=11,72. The conversion of palm’s oil sludge into compost can be used as an alternative in utilization waste into valuable product.Keywords: boiler ash, EM-4 activator, compost, fiber, palm’s sludge
Penyisihan Konsentrasi Pb Menggunakan Typha Latifolia Dengan Metode Sub- Surface Flow Constructed Wetland Sanny Amir Arasy; Shinta Elystia; David Andrio
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

Lead (Pb) is a heavy metal that has a high toxicity and the presence in water or wastewater could be derived from industrial activities, agriculture and mining. Oneof technology could be applied to eliminate Pb in wastewater is constructed wetland using Typha latifolia. This research aims to study the ability of Typha latifolia to reducing Pb on variations are concentration of artificial wastewater by 10; 30 and60 mg/L and detention time 1; 2; 3; 4 and 5 days. Concentration of Pb in wastewater was analyzed using atomic absorption spectrophotometer (AAS). The results showedremoval efficiency of Pb increases with longer detention time. The highest removal of Pb occurs at a concentration of 10 mg/L; 5 days detention time amounted to 87,40%and at the final of the experiment concentration of Pb to 1,26 mg/L. While the lowest efficiency at 5 days detention time occurs at concentrations of Pb 60 mg/L with a removal efficiency of 54,46 %, with a final concentration of 27,32 mg/L.Keywords: constructed wetland, detention time, Pb, Typha latifolia
Prediksi Sebaran Partikulat Insinerator Rsud Arifin Achmad Menggunakan Screen View Hardyan, Rici; Sasmita, Aryo; Yenie, Elvi
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

Hospitals as health facilities that are curative and rehabilitative should be free of pollutants such as particulate matter. One cause of the particulate matter in the hospital is incineration. Hospital incinerators that burn trash in hazardous / infectious, so it is necessary to determine the level of distribution of the particulates produced by burning incinerator. This research is a descriptive study using dispersion method gauss with Screen View program. Parameters that are seen medical waste generation, particulate concentrations, wind direction and wind speed, and distance distribution of particulates. The data obtained are presented in the form of graphs and tables. The highest particulate distribution on the wind direction is north east with the concentration of 2.32 μg / m3 at a distance of 100 m from the incineratorat a distance of 100 m from the incinerator emissions rate 0.00957 g/s, 0.38 stack inside diameter and 9 m stack high.Key word: incinerator, particulate, screen view, wind direction, wind speed.
Pengaruh Waktu Tinggal Hidrolik Terhadap Efisiensi Penyisihan Padatan Dalam Limbah Cair Industri Sagu Dengan Menggunakan Bioreaktor Hibrid Anaerob Dua Tahap Riki Rahmadhan; Adrianto Ahmad; Ahmad Fadli
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

Sagoo industries was produced wastewater with high concentration of solids that potentially causes environment problem’s. One way to got lower concentration of solids with making use two-stage hybrid anaerobic bioreactor’s with stone media. The purpose of this study was to remove and determine the highest solids removal efficiency in wastewater treatment sagoo. Twosatge hybrid anaerobic bioreactor in continuous process with working volumes 10 L was used instage I and 20 L was used in stage II. The output from stage I was used as the input for stage II. The two-stage reactor was operated at a hydraulic retention time that varied from 2 days in stage I and 3,5 and 7 days in stage II. The results showed that highest of solids removal efficiency was obtained in the operation of hydraulic retention time 7 days. The value of TS(81,03%), TVS (72,92%), TSS (71,13%) and VSS (68,63%). Two-stage hybrid anaerobic bioreactors system exactly effective and efficient within to got lower concentration of solids in wastewater of sagoo industry’s.Keywords: anaerobic, continuous, hybrid bioreactor, hydraulic retention time, solid concentrations, two-stage, wastewater of sagoo industry.
Kajian Kelayakan Rencana Lokasi Baru Tempat Pemrosesan Akhir (TPA) Sampah Di Kelurahan Muara Fajar Kota Pekanbaru Natalina, Riani; Asmura, Jecky; Andrio, David
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

Pekanbaru City has already had a location of operational final processing of waste in Muara Fajar Village. The operational condition and facilities of landfill in the final stages of capacities, and expansion of the area is difficult resulted in landfill no longer feasible, so it requires a new location as landfill replacement. The new location plans at village of Muara Fajar require a feasibility study with the technical standards prevailing in Indonesia. The volume of waste transported to landfill from 2016 to 2025 is estimated to reach 2,215,951 tons and service life at a new location be able to accommodate waste for 4 years and 5 months. The environmental conditions that need to be considered is slope of 15% to 25%, and existence of groundwater at the valleys at a depth of 0,2 meters to 1,5 meters. Based on Indonesian National Standard (SNI) 03-3241-1994 with scoring analysis landfill is medium worthy.Keywords: new location plans of landfill, Muara Fajar Village, volume of waste, SNI 03-3241-1994/
Pengolahan Limbah Cair Hotel Dengan Membran Ultrafiltrasi Aliran Cross Flow Dan Pencucian Kimia Membran Miki Randi; Syarfi Daud; Ivnaini Andesgur
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

The construction of hotels is so rapid today will bring a significant effect on the environment. Ultrafiltration membrane is one of wastewater treatment technologies, but membranes have limitations such as the occurrence of the phenomenon of concentration polarization and fouling. The research objective of this study the effect of variations in transmembrane pressure against the rejection percentage BOD5, COD, TSS, and the effect of variations in transmembrane pressure, concentration of washing of the efficiency and effectiveness of washing the membrane. the concentration of the washing of the efficiency and effectiveness of washing the membrane. The process of ultrafiltration membranes and membrane chemical washing wastewater at the hotel do with variations in pressure of 0.5 bar , 1.5 bar , and 2.5 bar. Variation of chemical cleaning agent concentration of 1%, 1.5% and 2%, rinsing with distilled water for 30 minutes, for filtering wastewater hotel for 120 minutes, and washing using chemical cleaning agent (NaOH and Detergent) for 30 minutes. Results highest percentage of rejection was 83.1% for BOD5, COD parameter 69.6%, 66.7% TSS parameters in transmembrane pressure of 2.5 bar. The highest washing efficiency of the value of Flux Recovery (FR) gained 88.59%, and the value of resistance of Removal (RR) gained 95.00% in the washing detergent ingredients with a concentration of 2% in the transmembrane pressure of 2.5 bar. The highest leaching effectiveness obtained at 51.27% in the washing detergent ingredients with a concentration of 2% and a transmembrane pressure of 2.5 bar. Ultrafiltration membrane performance seen from the flux and rejection fit for use.Keywords: Ultrafiltration membrane, Fouling, Transmembrane Pressure, Efficiency of Washing, Effectiveness of Washing

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