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All Journal Jurnal Sains dan Teknologi Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Riau Journal of Empowerment Unri Conference Series: Community Engagement
Syelvia Putri Utami
Department Of Chemical Engineering, Engineering Faculty, Universitas Riau
Agriculture, Biological Sciences & Forestry Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Mechanical Engineering Social Sciences

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Dehidrasi Bioetanol Hasil Fermentasi Nira Nipah Dengan Modifikasi Bentonit Dan Variasi Rasio Adsorben Hidayat, Wahyu; Chairul, Chairul; Utami, Syelvia Putri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Energy need is continously supplied by fossil fuels source The existence of environmental issues and facts about the limited resources of fossil fuels results in an energy crisis that will cause disruption of the world economy. The energy crisis has stimulated efforts to the use and development of renewable fuels and benign envinronmentally. Another method is by using bioethanol derived from nypa sap as an alternative energy source that is renewable. This study aimed to obtain data correlation ratio between the adsorbent and bioethanol against purity ethanol by distillation-adsorption process, and then obtain data on the effect of modification of bentonite activation without the addition of starch and with the addition of starch to bioethanol purity by distillation-adsorption process, and characterize the physical properties of ethanol. This research was conducted in three phases: bioethanol fermentation, modified bentonite and bentonite purification by distillation-adsorption process. For distillation-adsorption, they were conducted at 78oC by using 200 mesh bentonite .This study focused on ratio bentonite and starch addition. They were 1:2, 1:3, 1:4 and 0%, 35%,40%, 45% respectively. The most effective process in bioethanol purification was distillation-adsorption employed 45% starch addition by using 1:2 activated bentonite. It raised concentration bioethanol 95% to 99.7% v/v.Keywords : Bentonite, bioethanol, destillation-adsorption, fermentation, nypa sap, starch
Penentuan Persamaan Empiris Antara Debit Injeksi Air Dengan Produksi Minyak Bumi Di Eor Plant Balam Furqan, Muhammad; Chairul, Chairul; Utami, Syelvia Putri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Along with the decreasing availability of oil in the layers of the earth, it is necessary support from the technology or new effort to increase oil production. One of them is by way of water injection where the produced water is injected back into the earth to push oil to the surface. This research studied the relationship between the discharge of water injection and time of water injection against discharge of oil production. Processing of the data in this study performed using Microsoft Excel and Minitab software. This research was conducted in two stages. The first stage is the collection of field data which includes data discharge of water injection and discharge of oil production. For the second phase of data analysis using regression and correlation. The results showed that the best results of equations to predict the flow of water injection relationship with discharge of oil production is an empirical equation Y = -137 774 + 0,783 X with R2 value 0,987. While the influence of injection water flow to the discharge of the most significant of oil production is 6 days after water was injected.Keyword : Discharge of Water Injection, Discharge of Oil Production, Water Injection Time, Minitab, Regression and Correlation
Pembuatan Bioplastik Berbasis Pati Sagu Menggunakan Modifikator Asam Sitrat Dengan Microcrystalline Cellulose (Mcc) Sebagai Filler Dan Sorbitol Sebagai Plasticizer Novriyani, Vivi; Utami, Syelvia Putri; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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The use of synthetic plastic in daily life trigger environmental problems. Bioplastic or biodegradable plastic is one of alternative solution to change comercial plastic that can be dangerous to environment because it is difficult to be degraded. One of the potential materials to become the raw materials is sago because of its high starch component. The general purpose of this research is to determine the characteristics of sago-based bioplastic by modified the citric acid, microcrystalline cellulose filler, plasticizer sorbitol. The synthesis method is casting of starch, water, filler and plasticizer with composition of filler is (15-25 % b/b), composition of plasticizer (25–35 % b/b), and composition citric acid (3-9 % b/b). The analysis of bioplastic was tensile strength, elongation, biodegradation,. The most significant factor of all responses was composition of filler microcrystalline cellulose, followed by plastcizer sorbitol and citric acid. The best process condition was bioplastic with composition filler 20 %b/b, plasticizer 30 % b/b, and citric acid 0,95 % b/b with the value was tensile strenght 15.84 MPa, elongation 9,31% and biodegradation 51.65%. Keyword : bioplastic, casting, filler, plasticizer, water uptake
Pengaruh Volume Inokulum Acetobacter Aceti Dan Waktu Fermentasi Terhadap Fermentasi Asam Asetat Dari Nira Aren (Arenga Pinnata) Yasminto, Habib Maulana; Chairul, Chairul; Utami, Syelvia Putri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Sugar palm sap produced by sugar palm tree (Arenga pinnata). The sap is important product due to its sugar content can be used to produce brown sugar or fermented to ethanol and acetic acid. The sugar palm which is obtained from not fruit bunches with high sugar concentrations so as to provide an opportunity in the utilization of sugar palm to be acetic acid. Acetic acid can be produced naturally from ingredients containing sugar through fermentation using bacteria. The purpose of this study was to determine the result of ethanol in fermentation alcoholization, determine the effect of variations in the time of fermentation, variations in the volume of acetobacter aceti inoculum, determine the best acetic acid fermentation time for the concentration acetic acid obtained and determine the remaining ethanol and sugar during the asetification fermentation process. The bioethanol fermentation time is 6 day with volume of inoculum is 10% while the volume inoculum asetification fermentation 15% and the time of acetic acid fermentation is 16 day. The results of the analysis using the Nelson-Somogyi reagent revealed that the initial sugar concentration was 143.33 g/L. The maximum concentration of acetic acid obtained was 3.74%. This maximum concentration was obtained on 8 days of acetic acid fermentation at 15% of acetobacter aceti.Keywords : acetobacter aceti, acetic acid, fermentation, inoculum, sugar palm
PEMBUATAN 5-HIDROKSILMETILFURFURAL DARI GLUKOSA MELALUI PROSES HOT COMPRESSED WATER DENGAN VARIASI WAKTU DAN SUHU Syelvia Putri Utami; Nor Aisha Saidina Amin
Jurnal Sains dan Teknologi Vol 16, No 2 (2017): Jurnal Sains dan Teknologi
Publisher : Fakultas Teknik Universitas Riau

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Abstract

Proses hidrolisis umum dilakukan untuk mendegradasi suatu senyawa dan mengubahnya menjadi senyawa lain, salah satunya adalah proses hot compressed water. Proses ini mempergunakan kondisi proses yang bersuhu dan tekanan tinggi untuk memutuskan rantai suatu senyawa dan merekomposisinya menjadi senyawa lainnya, contoh: dari glukosa menjadi furan. Penelitian ini mempergunakan glukosa sebagai reaktan untuk kemudian dihidrolisis menjadi 5-hidroksilmetilfurfural (HMF) dengan menggunakan proses hidrolisis. Variasi suhu dan waktu waktu hidrolisis bersama dengan jumlah katalis dipergunakan dalam proses. Dari hasil hidrolisis diperoleh bahwa suhu dan waktu memberikan peningkatan konversi glukosa menjadi HMF seiring dengan meningkatnya jumlah katalis yang terlibat dalam proses. Diperoleh yield terbesar sebanyak 6,14%  dan konversi sebesar 87,69% pada suhu 200 oC dan waktu hidrolisis selama 360 detik.
Hidrolisis Mikroalga Tetraselmis chuii Dengan Variasi Konsentrasi Asam Sulfat Dan Temperatur Gilda Miranda; Amun Amri; Syelvia Putri Utami
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Glucose is a monosaccharide which can be used as an energy source in bio-battery, to produce intermediate products (hydroxymethylfurfural, furfural, levulinic acid, and formic acid), and can be converted into bioethanol. Glucose is a sugar monomer produced after hydrolysis of cellulose and hemicellulose chains in land plants and water plants. Microalgae is a water plant that has a big potential to be converted into glucose. It has been known to use light and various carbon sources to produce carbohydrate. Tetraselmis chuii is a green microalgae, containing a large number of carbohydrate, fat, protein, vitamin, and mineral. As a green microalgae, Tetraselmis chuii has a cellulose and hemicellulose components in its cell wall without a lignin content. This research focused on the hydrolysis of microalgae using variation of sulphuric acid concentration and temperature as variables to produce glucose. Microalgae feedstock was mixed with different concentrations of sulphuric acid between 0.25-1.75% (v/v). Hydrolysis process was conducted under low temperatures at 60 and 70 oC for 30 minutes. The glucose was analyzed quantitatively using Spectrophotometer UV-Vis. The results showed that the highest glucose yield obtained was 48,40% and this was achieved when the hydrolysis occurred at 70 oC with 1.75% (v/v) sulphuric acid addition. This study revealed that the temperature and the sulphuric acid concentration are the important factors during acid hydrolysis of microalgae for glucose production.  Keywords : glucose, dilute sulphuric acid, hydrolysis, temperature, Tetraselmis chuii.
Sintesis Dan Karakterisasi Membran Silika (SiO2) Priscilla Vidya Merarin; Syelvia Putri Utami; Jhon Armedi Pinem
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Silica-based membrane are an attractive choice for the purification process because of the size of the pores and morphology which provides higher selectivity. In this study, the synthesis and characterization of silica membranes was carried out with a mass variation of Poly Vinyl Alcohol (PVA) for waste water treatment hotel. The purpose of this study was to determine the characterization of silica membranes obtained by SEM, FTIR and tensile strength, and to determine the performance of membrane against the Flux and Rejection test with the effect of a mixture of PVA mass using raw materials in the form of pure silica. Making silica membranes with mass variations of PVA are 3, 6 and 9 grams and variations in pressure 1, 3 and 5 bars. The process of making silica membranes is the manufacture of PVA solution where the composition consistedof PVA, HNO3, and aquades. Then PEG solution where the composition consisted of PEG 400, Na2SiO3 and aquades. Then mixing PVA and PEG solutions in pure silica. The results showed Silica membrane with a mass of 3 grams of poly vinyl alcohol has the highest permeability of 24,758 L/m2.H.Keywords: membrane, waste, poly vinyl alcohol and ultrafiltration.
Pengaruh Ekstrak Daun Nanas (Ananas comousus) Sebagai Green Inhibitor Terhadap Laju Korosi Baja Karbon Dalam Media Asam Klorida Fauzia Mulyana; Komalasari Komalasari; Syelvia Putri Utami
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Corrosion is the deterioration of metals by chemical attack or interaction with its environment. The corrosion process is a natural phenomenon that cannot be stopped but can be prevented in many ways. The use of inhibitor is the best way to prevent metal from corrosion. Pineapple leaves are a green inhibitor that can be used to reduce the corrosion rate. This research aims to determine the concentration of tannin in pineapple leaves extract, the effect of variations in the concentration of corrosive media, the concentration of the inhibitor, the duration immersion against corrosion rate and inhibition efficiency of pineapple leaves extract. The soxhletation method was used to pineapple leaves extract with a ratio of solvent volume ethanol:aquadest 1:4. The test method carried out in this research is the weight loss method by using a variation of the concentration of the pineapple leaves extract (0, 0.5, 1.0 and 1.5 g/L) and the duration immersion (8, 16, 24, and 32 hours) in the concentrated hydrochloric acid solution 0.5M. The lowest corrosion rate in HCl solution 0.5M using inhibitor 1.5 g/L with duration of immersion 32 hours resulted 60.639 mpy and highest corrosion rate in HCl solution 1.0M without the addition of inhibitors with duration of immersion 24 hours resulted 530,659 mpy. It can be concluded that specimen with added higher the concentration of inhibitor in the lower concentration corrosive media yielded the corrosion rate to become lower in long immersion time.   Keywords: corrosion rate, inhibitor, pineapple leaves
Inaktivasi Termal Spora Bacillus Licheniformis Dalam Jus Nanas Dewi Sunarti; Evelyn Evelyn; Syelvia Putri Utami
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Bacillus licheniformis is a bacteria that has high heat resistance. The purpose of this study was to determine the effect of temperature (T: 85 ° C, 90 ° C, 95 ° C) at soluble solid SS: 12 ° Brix on the thermal inactivation of B. licheniformis. Then determine the value of D andZ. This study uses the thermal method of pasteurization process and spore calculation using the spread plate method. The D-values obtained at SS 12 ° Brix for temperatures 85, 90 and 95 ° C were 16.56; 7.63; and 3.52 minutes and the Z-value obtained is in the at 14,88 ° C. Itwas shown that haiger temperature resulted in the decreasing of the time needed to inactivate the spores. The results of this study emphasize the importance of temperature to the D and Z value for pineapple juice pasteurization.Keywords: bacillus licheniformis, endospore, inactivation, pasteurization, pineapple juice.
Produksi Bioetanol Dari Mahkota Nanas Menggunakan Bakteri Zymomonas Mobilis Dengan Variasi Konsentrasi Inokulum Dan Penambahan Nutrisi Suci Rahmadani; Sri Rezeki Muria; Syelvia Putri Utami
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Depletion of fuel oil encourage to find alternative energy that can be renewable to support requirement energy. Therefore, looked for alternative sources of raw materials and the potential is lignocellulosic biomass. This study uses the crown of the pineapple as the main raw material. This pineapple crown containing cellulose that can be utilized as bioethanol. This study was conducted to produce ethanol by fermentation of cellulose pineapple crown with treatment concentration inoculum at 12%, 14% and 16% with the addition nutrition of urea 0,6 g/l and fermentation time of 24, 48, 72, 96 and 120 hours. The fermentation was conducted in batch process. The result showed that inoculum volume and substrate fermentation also ethanol increased since the population of cells improved. The highest yield of bioethanol is 6% (v/v) at inoculum concentred 14% and the fermentation time 96 hours.keywords : delignification, hydrolysis, fermentation, urea.
Co-Authors Amun Amri Azhari Harahap Bahruddin Bahruddin Bahruddin Chairul Chairul Chairul Chairul Deasy Rahmayuni Deni Afrika Dewi Maya Sari Dewi Sunarti Edy Saputra Evelyn Evelyn Evelyn Evelyn Fajrina Qaishum Fauzia Mulyana Fryda Kusumawati Khoirunnisa Futhanul Wewe Gilda Miranda Hamsyah Adhari Heri Rahmana Jhon Armedi Pinem Karim Abdullah Komalasari Komalasari Komalasari Komalasari Muhammad Furqan, Muhammad Muhammad Rivai Muhammad Shalahuddin Muhammad Sugandi Nor Aisha Saidina Amin Novia Azzahra Novriyani, Vivi Pebriansyah Putra Priscilla Vidya Merarin Rifati Hanifa Sri Rezeki Muria Wahyu Hidayat Windy Odelia Putri Yasminto, Habib Maulana Yusnimar Sahan Yusnimar Yusnimar