Syelvia Putri Utami
Unknown Affiliation

Published : 25 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 25 Documents
Search

Dehidrasi Bioetanol Hasil Fermentasi Nira Nipah Dengan Modifikasi Bentonit Dan Variasi Rasio Adsorben Utami, Syelvia Putri; Hidayat, Wahyu; Chairul, Chairul
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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 Utami, Syelvia Putri; Furqan, Muhammad; Chairul, Chairul
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

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
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

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.
Pembuatan Bioetanol Dari Kulit Nanas Dengan Metodeliquid State Fermentation (LSF) Dengan Variasi Waktu Dan Konsentrasi Inokulum Deasy Rahmayuni; Chairul Chairul; 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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The world consumption of bioethanol for a variety of uses has increased very significantly in recent years. Pineapple skin is one of the potential materials to be processed into bioethanol. Availability of food waste material containing glucose as the skin is still fairly abundant pineapple and its utilization is limited only used for fertilizer and animal feed, so it is necessary for utilization of that adds value as well as a fairly high sugar content (13.65 % reducing sugar) makes the skin of pineapple has the potential to be processed into bioethanol. Through the process of fermentation using Zymomonas mobilis, glucose is converted into ethanol and carbon dioxide. Preparation of starter inoculum carried by Zymomonas Mobilis process. Fermentation takes place in batches with a volume of 1 liter of fermentation medium, fermentation time variation of pH 5 2 , 4 , 6 and 8 days and inoculum concentration variation of 5 , 10 and 15 % (v / v). Stirring speed of 200 rpm and temperature of fermentation at room temperature (25o – 30oC). Bioethanol concentration was analyzed by using gas Chromathography Mass Spectroscopy. The process of optimum fermentation conditions shown in inoculum concentration of 10% v / v and 4 days fermentation time. The concentration of bioethanol obtained under these conditions is 43.10 % (v / v) or 23.75 g / ml.Keyword :Bioethanol, Pineapple Peel, Fermentation, Zymomonas mobilis, Liquid State Fermentation
Pembuatan Komposit Bioplastik Konduktif Berbasis Tepung Tapioka Dengan Penambahan Electrochemichal And Mechanical Liquid Exfoliation Graphene Heri Rahmana; Amun Amri; Syelvia Putri Utami
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Conductive bioplastics are biodegradable plastics that have a good ability to conduct electrical current. This study aims to create a conductive tapioca-based bioplastic composite with the addition of EMLE graphene (Electrochemical and Mechanical Liquid Exfoliation) and study the effect of the amount of EMLE graphene addition to the tensile strength and transparency of bioplastics. Conductive bioplastic production was held by using solution intercalation method. The main raw material was tapioca flour as matrix and graphene as filler. Graphene can be produced by using the Electrochemical and Mechanical Liquid Exfoliation method which made in the liquid phase and mechanically crushed or mashed by using a blender. The products were analyzed by using conductive bioplastic tensile test and transparency. The best tensile test value was 3.92 Mpa with elongation 8.516% in addition for 9% graphene and 30 minutes. The best transparency value was obtained 88.31% without graphene addition.Keywords: bioplastics, EMLE, graphene, solution intercalation, tapioca flour.
Pembuatan pupuk organik dari limbah agro industri sebagai alternatif pengganti pupuk sintetis Komalasari Komalasari; Evelyn Evelyn; Edy Saputra; Syelvia Putri Utami
Unri Conference Series: Community Engagement Vol 1 (2019): Seminar Nasional Pemberdayaan Masyarakat
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/unricsce.1.506-510

Abstract

Farm and agro wastes from area which population has their livehood from farming and agriculture will result in the environmental and health issues if there is lack treatment on those wastes. One of the solutions to overcome these problems is to convert farm and agro wastes into organic fertilizer, which is produced from living substances weathering (plants and animals). Organic fertilizers are available in the form of solid or liquid and contain a lot of organic materials than nutrient levels, thus can improve plant growth. Other advantages of organic fertilizer are cheaper than synthetic ones, environmentally friendly, and are able to decrease negative effects of chemical fertilizers. Organic fertilizer can be made individually or in group of people. The objectives of this activity are to introduce the knowledge and train rural community of Kecamatan Rambah Hilir, Desa Pasir Utama Kabupaten Rokan Hulu, Provinsi Riau in making organic fertilizer using farm and agro wastes. The methods use in this activity are through socialization and training on making organic fertilizer from farm and agro wastes to Desa Pasir Utama community. Organic fertilizer was made by mixing cow manure with straw cuts, followed by addition of palm sugar activated effective microorganisms 4 (EM4). The mixture was left to incubate for 4 weeks and aerated every three days to allow good fermentation. This community service activity supports government program in encouraging growth of reusing farm and agricultural wastes that will increase agricultural productivity of rural community.
Pemanfaatan Minyak Jelantah Menjadi Biodiesel Dengan Katalis ZnO Presipitan Zinc Karbonat : Pengaruh Waktu Reaksi Dan Jumlah Katalis Hamsyah Adhari; Yusnimar Yusnimar; Syelvia Putri Utami
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Biodiesel is a highly potential material to replace diesel fuel. Renewable and environmentally friendly. Waste cooking oil can be used as raw material for making biodiesel. Free fatty acid levels are high in waste cooking oil requiring pretreatment (esterification) in the process of making biodiesel. In this study transesterification reaction conducted by catalyst synthesized ZnO of ZnCO3. This study aims to determine the effect of variations in reaction time and variations the amount of catalyst to yield biodiesel produced. After esterification of free fatty acid levels in the oil can be lowered from 6.09% to 1.02%. The transesterification reaction was held at temperatures 65oC; The mole ratio of oil and methanol is 1:18; ZnO catalyst amount is 0,5%, 0,6% and 0,7%; reaction time is 50, 75, and 100 minutes. The highest biodiesel yield obtained was 94.31% on the amount of catalyst 0.7% w / w of cooking oil with a reaction time of 100 minutes. Characteristics of biodiesel produced, namely: density and viscosity at a temperature of 40°C is 866,50 kg/m3 and 5,74 mm2/s, The flash point is 190oC, acid value 0,60 mg-KOH/g-biodiesel and the content of alkyl ester 98,42%.Keywords: Biodiesel, Waste Cooking Oil, Esterification, Transesterification, ZnO
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

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