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Pusat Penelitian Biologi LIPI, Jl. Ir. H. Djuanda No. 18, Bogor
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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
Kesetimbangan Adsorpsi Logam Fe (II) Menggunakan Karbon Aktif Dari Ampas Tebu Sebagai Adsorben Yuanita, Mira; Yenti, Silvia Reni; Chairul, Chairul
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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Bagasse is a by-product from pressing liquid sugar. One of the efforts to control the bagasse is processed into activated carbon. This study aims to activated carbon from bagasse, study the effect of Fe (II) concentration on activated carbon from bagasse and adsorption equilibrium model. Processing bagasse into actived carbon carbonization process is carriedout at a temperature of 320 °C for 2 (two) hours. After that activated with KOH ratio 3:1. 2 grams of activated carbon was added to the beaker containing the solution of Fe (II) atvarious concentration (20; 30; and 40 ppm), and the reaction temperature (40; 50; and 60 °C). The results showed that activated carbon adsorption for 20 ppm and 40 °C is 90,80%,followed equilibrium Freundlich and Langmuir isotherm models (with regretion 0,986 and0,985) and the heat of reaction of 2,24 kcal/mol°K.Keywords : adsorption, ion Fe (II), adsorption isotherm, activated carbon
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
Produksi Bioetanol Dari Nira Nipah Skala 50 Liter Dengan Penambahan Tween 80 Dan Ergosterol Pada Proses Fermentasi Menggunakan Saccharomyces Cerevisiae Widodo, Prio; Chairul, Chairul; Yenti, Silvia Reni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Currently, supply of ethanol was produced globally from sugar and starch. Sugar crops contributed about 61% of total ethanol production while 39% from starch. Nypa sap is one of potential material to be processed to bioethanol. The availability of nypa land is sufficient widely in Indonesia as well as a fairly high sugar content (15-20%) make nypa sap has the potential to be processed into bioethanol as a renewable energy. The aimed of this study was to observe the effect of fermentation time nypa sap with the addition of tween 80 and ergorsterol to bioethanol yield on a scale of 50 liters. Fermentation was carried out in a 70 liter fermenter with a variation of fermentation time about 24, 36, 48, 60, 72, 84, 96 and 108 hours, variations of tween 80 addition about 250 ml and ergosterol as much as 25 grams and without the addition of tween 80 and ergosterol. Effect of addition ergosterol can increase stress tolerance of yeast to osmotic pressure and high bioethanol tolerance in yeast cells. While the effect ofthe addition tween 80 can increase the absorption of ergosterol in plasma membrane and enzymatic accessibility and increasing the level of consumption of glucose in the final stages of fermentation. Fermentation of nypa sap produced the best conditions on the addition of 250 ml tween 80 and ergosterol 25 grams on the fermentation time 96 hours with bioethanol concentration about 16.22% (v /v) or 127.99 mg/mlKeywords: Bioethanol, Ergosterol, Nypa Sap, Saccharomyces Cerevisiae, Tween 80
Pembuatan Bioetanol Dari Fermentasi Nira Aren (Arenga Pinnata) Menggunakan Yeast Saccharomyces Cerevisiae Dengan Pengaruh Variasi Konsentrasi Nutrisi Dan Waktu Fermentasi Akhir, Yaumil Mutia; Chairul, Chairul; Drastinawati, Drastinawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 1 (2015): Wisuda Februari Tahun 2015
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Abstract

Bioetanol is one of the environmental friendly biofuel and produced by fermentating it with organic primary resource. Biofuel comes from organic resources called non-fossil energy. One of the most potential feed stock which used as primary resource of making bioetanol is arenga plant. Arenga plant is one of the plant that has sugar content. Microorganism that used for processing the arenga plant into bioetanol was Saccharomyces cerevisiae. The step of this research consist of materials and inoculum preparation, fermentation and also analysis. This research was observed the effect of variation in nutrient concentration and fermentation time. Nutrition used in this research were (NH2)2CO (urea) dan NH4H2PO4 (NPK) where urea was varied into 0,3;0,4;0,5; dan 0,6 g/l whereas NPK was varied into 0,4;0,5;0,6; and 0,7 g/l. Fermentation result were taken after 24, 48, 72 and 96 hours. Optimum urea addition result 0,5 g/l and 0,6 g/l for NPK on 72 hours of fermentation that resulting bioetanol concentration 7% (v/v).Keyword : Arenga plant, bioetanol, fermentation, Saccharomyces cerevisiae.
Fermentasi Nira Nipah Menjadi Bioetanol Menggunakan Saccharomyces Cerevisiae Dengan Penambahan Urea Sebagai Sumber Nitrogen Rahmah, Yulia; Bahri, Syaiful; Chairul, Chairul
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
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Abstract

Nypa is one of biomass wich has a potential to be converted into bioethanol. Bioethanol produced through the process of fermentation of glucose with the help of a microorganism. In this research, nypa sap was converted to be bioethanol using Saccharomyces cerevisiae. The purpose of this researches were doing the fermentation of nypa sap to produce bioethanol, to study the influence of the addition nitrogen source in the fermentation process, and obtain the optimum fermentation time to bioethanol production. The sequances of this research were preparation of material, equipment sterilization, making the starter (inoculum), making the medium fermentation and fermentation process. Fermentation takes place in batches with a volume of 2 liters of fermentation medium. Variation of urea were used 0,2; 0,4; 0,6; and 0,8 g/l, variation of fermentation time were 24, 36, 58, 60, and 72 hours. Temperature fermentation was occured at room temperatur (25 – 30oC). Ethanol concentration was analyzed by using Gas Chromatography. The highest bioethanol concentration was 7,12% at variation of urea 0,6 g/l and fermentation time 36 hours.Keywords : bioethanol, fermentation, nypa sap, Saccharomyces cerevisiae, urea
Kesetimbangan Adsorpsi Logam Cu Menggunakan Karbon Aktif Dari Ampas Tebu Sebagai Adsorben Astrandana, Yudi; Chairul, Chairul; Yenti, Silvia Reni
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 3, No 1 (2016): Wisuda Februari Tahun 2016
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Abstract

Bagasse is a by product of the extraction process (pressing) liquid sugar. One of the efforts to control the bagasse is processed into activated carbon. This research aims to study activated carbon manufacturing process of bagasse, study the effect of Cu concentration and temperature of Cu solution on activated carbon from bagasse as and determine of equilibrium models that used at Cu metal adsorption using activated carbon from bagasse. Processing bagasse into activated carbon carbonization process is carried out at a temperature of 320 ° C for 2 hours. After that is activated using KOH with comparison of activated carbon to KOH 1:3. As much as 1.5 grams of activated carbon was added to the beaker containing the solution of Cu at various concentration (20 ppm, 30 ppm and 40 ppm), the reaction temperature (40 ° C, 50 ° C and 60 ° C) at a volume of 500 ml solutions. The results showed that activated carbon adsorption for is 97.1%, followed equilibrium models Freundlich isotherm models.Keywords: Adsorption, Cu Metal, Carbonization, Activated Carbon
Pengaruh Jenis Pengaduk Dan Waktu Fermentasi Pada Pembuatan Bioetanol Dari Sari Nenas Reject Junuansyah, Muh Wawan; Chairul, Chairul; Drastinawati, Drastinawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Bioethanol is a liquid of fermentation of sugars from carbohydrate source that uses the help of microorganisms. Bioethanol is an energy source with good prospects as a substitute for liquid fuels renewable raw materials, friendly to the environment and the very favorable economic terms. One of the materials that can be used as raw material for bioethanol is pineapple. The fermentation process is influenced by several factors, among which the fermentation time and stirring in a liquid medium. Flow pattern and degree of turbulence is an important aspect which affects the quality of mixing that depends on several factors such as tank geometry, physical properties of fluids and type of impeller. Fermentation time very big influence on the activity of yeast because the longer the fermentation, the more number of increasingly active yeast or yeast to proliferate. The process of fermentation using yeast Sacharomyces cereviceae. Preparation starter made with yeast inoculum process Sacharomyces cereviceae at 10% glucose so that the yeast to multiply. Fermentation takes place in batch, variations in the type of agitator Paddle, pitched Blade Turbine, Turbine Disk and variations in the fermentation time 24, 36, 48, 60 and 72 hours. Stirring speed of 200 rpm and the temperature of fermentation in temperature. Ethanol concentration was analyzed using Alkoholmeter. The optimum fermentation process is shown on the type of agitator pitched Turbine Blade fermentation time of 48 hours with the acquisition of bioethanol concentration of 8.5% (v / v).Keywords : Bioethanol, Reject Pineapple, Saccharomyces Cerevisie, Impeller Type, Flow Pattern
Pengaruh Jenis Pengaduk Dan Waktu Fermentasi Terhadap Fermentasi Nira Nipah Menjadi Bioetanol Menggunakan Yeast Saccharomyces Cereviceae Nst, Khoirul Amru; Chairul, Chairul; S, Maria Peratenta
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

Bioethanol is a chemical that is produced from plant raw materials containing starch, sugar and cellulose through a process of fermentation and distillation is an alternative fuelthat is environmentally friendly and renewable nature. One of the raw materials for bioethanol production are Nypa sap. Availability of land wide enough Nypa in Indonesia (700,000 ha) as well as a fairly high sugar content (18-19%) makes the Nypa sap is a potential to be processed into bioethanol. Flow patterns and the degree of turbulence is an important aspect that affects the quality of mixing is dependent on several factors such as the geometry of the tank, the physical properties of the fluid and the Impeller. Fermentation time very big influence on the activity of yeast because the longer the fermentation, the more the number increasingly active yeast or yeast to proliferate. The purpose of the study to convert the sugar in the Nypa sap is fermented into bioethanol and observe the effect of impeller and fermentation time on ethanol produced using Sacharomyces cereviceae. Through the process of fermentation using yeast Sacharomyces cereviceae, glucose is converted into ethanol and carbon dioxide. Preparation is done with the starter yeast inoculum Sacharomyces cereviceae at 10% so that the yeast fermentation medium is able to adapt and ready to ferment. Fermentation takes place in batches with a volume of 2 liters of fermentation medium, variations impeller Paddle, Pitched Blade Turbine, Disc Turbine and variations of fermentation time 24, 36, 48, 60 and 72 hours. Stirring speed of 150 rpm and temperature of fermentation at room temperature (25 - 300C). Ethanol concentration was analyzed by using Gas Chromatography. The optimum fermentation process is shown on the Impeller Pitched Blade Turbine fermentation time of 48 hours with yield obtained 89,86% and ethanol concentrations obtained 10.72% (v / v) or 84.60 mg / ml.Keywords: Bioethanol, Nypa Sap, Saccharomyces Cerevisiae, Impeller, Flow Pattern.
Produksi Bioetanol Dari Mikroalga Chlorella sp. Dengan Variasi Konsentrasi H2SO4 Wulandari, Zarah Ayu; Muria, Sri Rezeki; Chairul, Chairul
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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Microalgae is one type of raw material that has the potential to be used as bioethanol, because it has the ability to grow in a relatively short time, can be cultivated in a limited area, and several types of microalgae have a high carbohydrate content. The purpose of this study was to determine the effect of variations in the concentration of H2SO4 on bioethanol produced. The substrate used in the fermentation process in this study was microalgae Chlorella sp. obtained from microalgae cultivation by fed-batch in oil palm liquid waste media. The preliminary stage carried out in this research is the preparation of the microalgae raw material Chlorella sp. to form a powder. Microalgae powder was used as a substrate and hydrolyzed with variations in the concentration of H2SO4 3%, 4%, and 5%. The hydrolysis solution was then fermented using Saccaromyces cerevisiae with a concentration of 10% Saccaromyces cerevisiae inoculum volume. The results showed that 4% (v/v) H2SO4 produced the highest glucose concentration, which was 37,87 mg/mL with the resulting bioethanol concentration of 15,78 mg/mL. Keywords: bioethanol, H2SO4, microalgae, Saccaromyces cerevisiae
Co-Authors , Deviona, , Ade Ayu Oksari Afriansyah Afriansyah Agrina, Agrina Alzuro, Muhammad Huday Amanda, Falencia Mauri ANDRIA AGUSTA Anggoro, Zulfri Prio Anjelika, Feblin Isma Annisa, Syarifah Sari Apriliani, Prapita Ardesta, Ribbi Sukma Armaini, Armaini Arofi, Habib Asral, Asral Astrandana, Yudi Besri Nasrul Br. Silaban, Nesia Rachel Lina Dahelmi Dahelmi Dahlan Tampubolon Darliansyah, Danny Desi Heltina Dewi Kusrini DEWI WULANSARI Dirgantara, Doni Ari Drastinawati Drastinawati, Drastinawati Efitra, Mildria Emelda, Retta Emma Sri Kuncari Erizal Mukhtar EVELYN EVELYN Fadhlan, Adli Fauziah Syamsi Febiani, Hartika Febrialismanto, Febrialismanto Febriamansyah, Thoriq Alfath Febriansyah, Beni Fermi, Iwan Filda, Aiska Fitria Fitria Geovana, Savira Geovani Meiwanda Ginting, Theresia Ellyandra Destri Gunawan Tabrani Habinuya, Senriella Hasibuan, Muhammad Ilham Febrian Mahodum Hendra, Alfino Hengki Firmanda Hijran, Muhammad Hafiyyan Naufal Humairah, Bilqis Armadini Indra Lesmana Indriana, Hanifah Irvan Fadli Wanda Izmiarti Izmiarti, Izmiarti Kamilyandri, Kamilyandri Karimi, Kasman Khairunnisa, Syakira Nada Khoirul Amru Nst, Khoirul Amru Komalasari Komalasari Kurniawan, Abdy Kusbiantoro, Sigit Lia Nazliana Nasution M. Fadli M. Idris Mairawita, Mairawita Maisalma, Putri Maria Peratenta S, Maria Peratenta Maria Peratenta Sembiring Marpaung, Masdalena Marqfirokh, Ramadhana Marzuki, Salman Miftahul Jannah Mildawati Mildawati Muchtar, Erizal Muh Wawan Junuansyah, Muh Wawan Muhammad Furqan, Muhammad Najah, Muthiya Safinatun Nelvia Nelvia Ningsih, Lisa Septia Nurainas Nurainas Nurwijayanti Nuryanti, Lidya Ohi, Hiroshi Pertiwi, Vera Presi, Familindo Putri, Alivia Hardana Putri, Novia Anas Radith Mahatma Rahimmi, Anna Fithra Rahmah, Yulia Rasya, Nabila Rianti, Rianti Ristia Ningsi, Maya Rohaya, Rohaya Romi Kurniadi S., Tikkos Maruhum Saefudin Saefudin Safitri, Nadira Sakutteri, Riza Salsabilla, Dhiyya Sandy, Athifah Faradilla Satria, Fitra Sayyidhani, Muhammad Hisna Sefmaliza, Rizka Serly Marselina Arifin, Serly Marselina Silaban, Kardiman Silvia Reni Yenti Simanjuntak, Billy Oktavianus Simanjuntak, Tagonna Serasi Asnita Sinaga, Raihan Daffansyah Sitinjak, Jufri Suanto Sitompul, Diantika Elena Sitorus, Wahyu Sofnie M Chairul Sofnie Marusin Soleh Kosela Solfiyeni Solfiyeni Sri Budi Sulianti, Sri Budi Sri Endang Kornita Sri Rezeki Muria Sunardi Sunardi Suwirmen, Suwirmen SYAIFUL BAHRI Syamsuardi Syamsuardi Syelvia Putri Utami Tasman, Annaya Qamara Tesri Maideliza Tibrani Tibrani, Tibrani Tri Murningsih, Tri Triani, Leni Villarul, Trya Nungky Wahyu Hidayat Wahyu, Pri Widodo, Prio Wilson Novarino Wulandari, Siti Rahmi Indri Wulandari, Zarah Ayu Yasminto, Habib Maulana Yasra, Firham Yaumil Mutia Akhir, Yaumil Mutia Yayan Setiawan, Yayan Yelmida Azis Yuanita, Mira Yuliana Yuliana Yulianda, Aldi Yuliasri Jamal Yusnimar Sahan Zahtamal Zahtamal Zainul, Zuherti Zulaspita, Witri Zulfansyah Zulfansyah Zultiniar, Zultiniar