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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains CHEMPUBLISH JOURNAL Unri Conference Series: Community Engagement Journal of Bioprocess Chemical and Environmental Engineering Science Bhakti Nagori (Jurnal Pengabdian kepada Masyarakat) JOURNAL OF COMMUNITY SERVICES PUBLIC AFFAIRS Jurnal Masyarakat Mengabdi Nusantara
Sri Helianty
Universitas Riau
Religion Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences

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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 Kinerja Kompor UB-03-1 Berbahan Bakar Limbah Industri Kayu Olahan, Tempurung Kelapa, Pelepah Sawit, Dan Ranting Kayu Akasia Eko Karmiza; Sri Helianty; Zulfansyah Zulfansyah
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
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The availability of biomass as a source of primary energy in Indonesia is very abundant, reaching 280 million barrels of oil equivalent (BOE) and approximately 84% of the biomass has been used for the household sector. The application of gasification stove especially in cooking purposes can  increase  the efficiency of fuel usage. This research used UB-03-1 semi-gasification with various of biomass, such as acacia of branches, palm frond,  tropical wood and coconut shell. The moisture content measurement of biomass fuels was determined using oven-dry method. The efficiency of the biomass fuels in UB-03-1 stove between 13,18 – 45,91%. Tropical wood had the highest energy efficiency of 45,91% and coconut shell had the lowhest energy efficiency of 13,18%. UB-03-1 stove works in the range of 3,5 to 11,5 kWth of fire power. The research obtained indicate that a variety of biomass fuels in Riau can perform well in UB-03-1 stove, such as acacia branches having 4,2 kWth  fire power, palm frond having 4,86 kWth fire power, tropical wood having 11,5 kWth fire power and coconut shell having 3,5 kWth  fire power, thus the need for adoption to combat crisis energy household sector problem Keywords : biomass, semi-gasification stove, water boiling test, UB-03-1
Penentuan Kesetimbangan Adsorpsi Regenerated Spent Bleaching Earth (RSBE) Terhadap Ion Fe(III) Mhd Taufik Kurniawan; Yusnimar Yusnimar; Sri Helianty
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
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Spent Bleaching Earth (SBE) is a waste of palm oil refinery industry. One of the efforts to control the SBE is to be processed into Regenerated Spent Bleaching Earth (RSBE). This study aims to determine the adsorption capability of RSBE and the corresponding adsorption model on ion Fe(III). SBE processing into RSBE by extraction of oil on SBE soxhletation manner using n-hexane at a temperature of 72°C for 8 hours. Then the rest of the SBE results soxhletation washed with 3% HCl and physically activated at a temperature of 470oC. A total of 1 g RSBE mixed with a solution of Fe(NO3)3 with a volume of 100 ml at various concentrations (10, 15, 20, 25 and 30 ppm). The results showed that the adsorption RSBE reach equilibrium after a contact time of 150 minutes and adsorption that occurs following the Langmuir isotherm models with correlation coefficient (R2) = 0.982 and the maximum value jerap capacity = 2.71 mg Fe (III) / g RSBE.Keywords: adsorption, adsorption isotherms, ion Fe (III), RSBE, SBE
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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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
Pengaruh Laju Aerasi Terhadap Produksi Kitinase Oleh Trichoderma Asperellum TNJ63 Riko Naldo Saputra; Sri Helianty; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Chitinase is enzyme that hydrolyze chitin compound in β-1,4-N-acetyl-glucosamine into monomer N-acetyl-glucosamine, which widely occurs in nature. This enzyme is potentially applicable in the field of pharmaceuticals for the treatment of cancer, tuberculosis, asthma, diabetes, allergies and infections. Chitinase can be produced by microorganisms chitinolytic are numerous in the biosphere, one of the local isolates Trichoderma asperellum TNJ63. In this research, scale up production of 25 mL to 1.5 L medium. Fermentation was carried out in a 2 L stirred tank bioreactor using methods submerged fermentation (SmF) with the substrate chitin from shrimp shells. Chitinase production conducted for 9 days with stirring speed of 40-60 rpm, and the effect of aeration rates (0 vvm; 0.5 vvm; 1 vvm and 1.5 vvm) studied the chitinase activity produced. The highest chitinase activity was obtained at 1 vvm aeration rate and fermentation time of 7 days with 0.0160 U / mL through analysis UV-Vis spectrophotometer with a sugar analysis method, Nelson-Somogyi.Keywords: aeration, chitinase, scale up, shrimp shells, Trichoderma asperellum TNJ63
Pemodelan Dan Simulasi Kinerja Downdraft Gasifier Menggunakan Teknik Minimisasi Energi Bebas Gibbs Rio Nanda Novendra; Zuchra Helwani; Sri Helianty; Zulfansyah Zulfansyah
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
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Gibbs free energy minimization method has been used in modelling the performance of a downdraft gasifier. The performance is represented by the composition of resulting gas. Sixteen gases considered are H2, CO, CH4, H2O, CO2, N2, C2H2, C2H4, C2H6, NO, NO2, N2O, HCN, NH3, H2S and SO2. The simulation is carried out making used of EXCEL. The result showed that the predicted value of model fit reasonably well with experimental data. The model was also used to investigate the influence of biomass composition, oxidant ratio and composition of oxidizing agent to composition of the resulting gas. Three kinds of biomass considered are oil palm shell,oil palm frond and empty fruit bunch. The oxidant ratio simulated is varied from 0 to 1 while  composition of oxidizing agent is varied from 21% - 100% oxigen. The simulation result showed that those three parameters play an important role in gasification process which in combination can produce total H2 and CO up to more than 85%.Keyword : Gasification, modelling, downdraft gasifier, Gibbs free energy minimization
Pembuatan Biodiesel Dari Sawit Off Grade Dengan Menggunakan Katalis Zno Komersial Pada Proses Transesterifikasi Yulva Gemy; Sri Helianty; Yusnimar Yusnimar
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
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Abstract

Vegetable oil with high FFA derived from off grade palm oil can be used as raw material for making biodiesel. ZnO is currently developed as a heterogeneous catalyst in the reaction of biodiesel production. This research aimed to produce biodiesel from low-quality raw materials and determine the effectiveness of the process by looking at the effect of process conditions such as reaction temperature, mole ratio and catalyst concentration on the yield of biodiesel. The process of making biodiesel is done with two stages of the reaction of esterification and transesterification reactions. Esterification reaction carried out at a temperature of 65oC, the mole ratio of oil: methanol 1:12, and 1% catalyst concentration. Variations in operating conditions transesterification reaction include reaction temperature (45oC, 55oC, 65oC), the mole ratio of oil: methanol (1:10, 1:14, and 1:18), and catalyst concentration (0.5%, 1%, and 2% / w). The highest yield of biodiesel obtained as much as 94.26% under the conditions of reaction temperature of 65oC, the mole ratio of oil: methanol 1:18, and 2% of ZnO catalyst concentration. The characteristics of biodiesel produced in the form of density, kinematic viscosity, acid number and flash point are in according to the standards of Indonesian biodiesel.Keywords: biodiesel, esterification, off grade palm oil, transesterificationi, ZnO
Produksi Enzim Lakase Oleh jamur Trichoderma Asperellum Lbkurcci Dalam Bioreactor Tray Menggunakan Variasi Ukuran Substrat Jerami Padi Dan Induser CuSO4 Pada Fermentasi Kultur Padat Gustina Gustina; Sri Helianty; Andi Dahliaty
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Laccase is one of the ligninolityc enzymes that capable to degrade lignin. This ability can be used for the pretreatment of lignocellulosic materials in the bioethanol production and lignin degradation in pulp. There are diverse sources of laccase producing like fungi, plants and bacteria. In this research, the production of lacase enzyme using Trichoderma asperellum LBKURCC1 with bioreactor tray using solid state fermentation (SSF) method with rice straw substrate. The purpose of this study was to determine the effect of rice straw size and the addition of CuSO4 concentration to the highest production of lacase enzyme by Trichoderma asperellum LBKURCC1. Fermentation is carried out with variation of time 5, 6, 7, 8, 9 and 10 days with fermentation temperature ± 30ºC, substrate size ± 0.5 cm, 1.5 cm, and 3.0 cm with substrate thickness at tray ie 3 cm acetate buffer solution pH 5,5 and addition of CuSO4 0.5 g/l. Variations for the addition of CuSO4 concentration 0 g/l, 0.50 g/l and 1 g/l with substrate thickness on tray were 3 cm, size of rice straw 0.5 cm and acetate buffer solution pH 5.5. Small size can provide the highest value and the added concentration of CuSO4 given can increase the activity of the resulting lacase enzyme. However, too high CuSO4 concentrations result in decreased lacase enzyme activity. The results showed that the highest lacase enzyme activity was obtained on the size of rice straw ie 0.5 cm and 7 days of fermentation time with an average of 19.27 U/L and the highest lacase enzyme activity was obtained on CuSO4 0.50 g/l and fermentation time 7 day with an average of 19.27 U/L.Keywords: Inducer, Laccase, Rice straw, Solid state fermentation, Trichoderma asperellum.
Evaluasi Kinerja Kompor Gasifikasi Forced Draft Berbahan Bakar Cangkang Sawit Nini Reflinda R; Sri Helianty
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
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Oil production in Riau until the year 2011 has reached 35 million tons and production is produced from palm shell of 2.8 million tonnes . Especially in the application of gasification stove for cooking can improve the efficiency of the use of palm shells . This study uses three units of gasification stove with stove dimension 1 ( H1 = 16 cm , D1 = 10cm ) , stove 2 ( H2 = 16 cm , D2 = 12 cm ) , and the stove 3 ( H3 = 20 cm , D3 = 12 cm ) . The fuel used is oil shell with moisture content of 8% , 9 % and 8 % . Method of boiling water test ( WBT ) is used to evaluate the performance of the stove . Additional parameters such as the operating time and temperature flame of the stove as well as evaluate the performance of the stove . The results were obtained an average start-up time of 4.48 minutes and the operation time of the forced draft gasification stoves reached 13.83 minutes . The thermal efficiency of the gasification burner forced draft is approximately 41.49 % to 60.34 % , with the highest efficiency is a stove with a diameter of 12 cm and height 16 cm . Although the resulting fire is still reddish yellow , but the forced draft gasification stoves capable of producing up to 4.42 kWth heat energy with the highest flame temperature reaches 900oC . These results indicate that the operating conditions of forced draft gasification stoves greatly affect the performance of the stove .  Keywords : Shell oil, gasification stove, Thermal Efficiency
Desain Mixer-Settler Pada Prarancangan Pabrik Acrylonitrile Butadiene Styrene (ABS) Dengan Proses Emulsi Revika Wulandari; Sri Helianty
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
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Acrylonitrile Butadiene Styrene (ABS) is a thermoplastic polymer. Lightness, rigidity, impact resistance, ease of processing, resistance to chemicals and applicable are ABS properties interesting. The base ABS is added methyl methacrylate to enhance the appearance and become a transparent material. The ABS consumption in 2018-2026 tends to increase due to its properties, especially in the lightweight engineering plastics region. Our final project is proposed to design a new ABS plant that meets 10% of domestic ABS needs. This project decreases the country's foreign exchange, and allocates jobs for local labour. Also, ABS domestic strengthens the upstream industries, such as a vehicle and textile. The ABS plant construction is going to hold for three years in 2022-2025, in the Tanjung Buton Industrial Estate. The ABS plant has 115,000 tons/year capacity for emulsion processing, per the average ABS capacity in Asia of 120,000 tons/year. This capacity is to meet domestic needs and the Asia market. The ABS Emulsion Process consists of 3 stages Polybutadiene Synthesis, the grafting polymerization reaction stage and the product separation stage. The main design is the mixer-settler used to separate the remaining CaCl2 which is still present in the ABS. Technically, the separation process using a mixer-settler consists of 2 stages, namely the extraction stage occurring in the stirred tank and the separation stage occurring in the settler. The mixer-settler equipment was purchased from the Haohua Zhongyi Hebei Advanced composite Co., Ltd manufacturer with a volume used of 133 m3, a tank diameter of 18 ft, a total tank height of 24 ft and a rectangular settler used as a settler. The types of heads used are torispherical flanged and dished heads. The material used is Fiberglass Reinforced Plastics ASTM D3299. The resulting ABS product is transparent in the form of pellets as intermediate goods. The pre-designed economic analysis of this factory obtained a Return On Investment (ROI) of 33.17%, a payback period (PBP) of 1.67 years, a BEP of 32% and an IRR of 22.74%. The feasibility analysis shows that the ABS plant project is feasible. With the increasing industrial development in Indonesia, it is estimated that the demand for ABS raw materials in the coming years will also increase. Keywords : emulsi, mixer-settler, polymer, thermoplastic
Co-Authors Adrianto Ahmad Ahmad Fadli Andi Dahliaty Andi Dahliaty Andi Muhammad s, Andi Muhammad Anisa Fitri Bahruddin Barus, Yohana Dwi Nita Desadria, Renny Eko Karmiza Fajril Akbar Halida Sophia Hari Rionaldo Hariz, Abdul Intan Fitra Martin, Intan Fitra Irwanda, Juni Iwara, Bangkit Swadi Khafid Ali Mahdi, Khafid Ali Khairat Lita Darmayanti Luthfi, Alif Maria Peratenta Mhd Taufik Kurniawan Muhamad Fajri Muhammad Rivai Mukhlisoh Arifah Nini Reflinda R Nirwana Nirwana Nurliati, Ivanna Nurul Khumaida Revika Wulandari Rifaldi, Muhammad Riko Naldo Saputra Rio Nanda Novendra Rispiandi, Fadli Saputra, Noris Selsa Idillah Silalahi, Yunita Magdalena Sri Rezeki Muria Syaktia Aryuda Titania Tjandrawati Nugroho Wijaya, Deni Yuana Nurulita Yuana Nurulita Yulva Gemy Yusnimar Sahan Z Zulfansyah Zuchra Helwani Zulfansyah Zulfansyah Zultiniar Zultiniar Zuqni Meldha