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Variasi Pengadukan Dan Waktu Pada Pembuatan Bioetanol Dari Pati Sorgum Dengan Proses Sakarifikasi Dan Fermentasi Serentak (SSF) Maulia Rayana; Chairul Chairul; Hafidawati Hafidawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Sorghum is one of the agricultural commodities used for biofuels. Sorghum starch characteristics of high carbohydrate and contains high levels of starch as raw material potential of bioethanol. Making bioethanol done with simultaneous saccharification and fermentation process using yeast enzymes StargenTM 002 and Saccharomycess Cereviciae with varying speed agitation of 200, 250, 300 and 350 rpm and fermentation time 12, 24, 48, and 72 hours. The results of the analysis using a spectrophotometer and Alkoholmeter with highest bioethanol yield at speed agitation 350 rpm at 42 hours of fermentation with ethanol content of 8% (v/v) Keyword: Sorghum, Bioethanol, Enzym StargenTM 002, SSF, Speed Agitation
Varasi Konsentrasi Enzim Stargen TM 002 Pada Proses Sakarifikasi Dan Fermentasi Serentak Pati Sorgum Menjadi Bioetanol Dike Putra Ganda; Chairul Chairul; Hafidawati Hafidawati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

One of the plants that can be used as raw material for making bioefuel as alternative energy is sorghum. Grain sorghum has a high starch content that can be used as a substrate for the production of bioethanol. This study aims to determine the concentration of the enzyme and the best time of  fermentation to produce bioethanol. The research method using the simultaneous saccharification and fermentation (SSF) with the aid of enzymes Stargen ™ 002 and the yeast Saccharomyces cereviceae. Variations made to the enzyme concentration Stargen ™ 002 is used as follows: 2.5%, 3%, 3.5% and 4% and fermentation time for 30, 36, 42, 48, 54, 60, 66 and 72 hours. Analysis of the results using the Alcoholmeter with highest bioethanol yield at 4% enzyme concentration at 42 hours of fermentation with ethanol content of 8% (v / v) Keywords: Sorghum, Bioethanol, Stargen™ 002 Enzymes, Enzyme Concentration, SSF
Pemurnian Bioetanol Hasil Fermentasi Nira Nipah Menggunakan Proses Destilasi-Adsorpsi Menggunakan Adsorben Silica Gel Shintia Oktaviani; Chairul Chairul; Silvia Reni Yenti
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

The rapid rate of world population growth conduces demand and supply of fuel is not balance. So that, energy reserves has been depleted in large numbers. Especially fossil fuels which is a main energy. The government has compiled program and policy for development of bioethanol and biodiesel to resolve energy crisis in indonesia which targeted in 2025 can be approximately 15-20% fuels need to fulfill transportation sector and the national industry. This research aims to produce bioethanol fuel grade-adsorption using distillation methods, determine the effect of the ratio of silica gel: bioethanol and height of the adsorbent in the column for producing bioethanol fuel grade. The raw material is bioethanol from nipa sap fermentation results with 13% ethanol content. Ethanol content obtained not too high previously, so that should be took a process that can be increase the purity of bioethanol with distillation process-adsorption. This research divided into two stages. First stage is nipa sap bioethanol distiled up to 96% concentration and second stage is distillation-adsorption using silica gel adsorbent. Independent variables on this research is ratio of silica gel : bioethanol and height of adsorbent in the adsorption column. The most influence process to review bioethanol purification is distillation-adsorption silica gel with ratio: ethanol 1:2 and a height of adsorbent in the column is 3.5 cm with purity of 99,6% and had been categorized fuel grade bioethanol.Keywords: Silica gel, bioethanol, bioethanol fuel grade, nypa, distillation adsorption process
Pengaruh Konsentrasi Gula Dan Waktu Fermentasi Terhadap Fermentasi Asam Asetat Menggunakan Kulit Nanas Dan Acetobacter Aceti Ahmad Dedi Fadillah; Chairul Chairul; Cory Dian Alfarisi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Pineapple (Ananas comosus (L) Merr) is a fruit which has a golden yellow color. Pineapple can thrive in tropical climates such as in Indonesia. Pineapple production in Indonesia in 2009 was 1,558,196 tons. The sugar contained in pineapple is 2.32% glucose, 1.42% fructose, and 7.89% sucrose. So that it can be used as an alternative material for the production of acetic acid. Acetic acid can be produced from raw materials containing starch or sugar by fermentation using microorganisms. The purpose of this study was to determine the effect of fermentation time and sugar concentration on the yield of acetic acid produced and to find out the optimal time and concentration of sugar in pineapple rind fermentation into acetic acid using Saccharomyces cerevisiae and Acetobacter aceti bacteria. The initial sugar concentration variations were 10%, 20%, and 30%, while the fermentation time was 2, 3, 4, 5, 6 days. The acetic acid fermentation process was carried out at pH 6, stirring speed 200 rpm and 10% inoculum. The test results using the Nelson-Samogyi method showed that the highest sugar concentration was 30% (174,678 g/L) of sugar added to pineapple rind raw material. The highest concentration of acetic acid was obtained 35.581 g/L and the yield of 30.555%. The best fermentation time is the 6th day of fermentation.Keywords: Acetobacter aceti, acetic acid, fermentation, inoculum, pineapple
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

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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
The Diversity and Diameter Growth Rate of Sprouting-Type Tree in Bukit Pinang-Pinang Forest Permanent Plots Ade Ayu Oksari; Irvan Fadli Wanda; Erizal Mukhtar; Chairul Chairul
Jurnal Biodjati Vol 4, No 2 (2019): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v4i2.4728

Abstract

The process of forest regeneration can take place within a certain period of time. Sprouting is a form of strategy for in adapting to its environment for success in regenerating. The Research on  the diversity and diameter growth rate of sprouting-type tree in Bukit Pinang-pinang forest permanent plots, West Sumatra was carried out from October 2012 to December 2016 in the forest of Bukit Pinang-Pinang, West Sumatra and Herbarium Department of Biology, Universitas Andalas, Padang. This research was conducted using a survey method by census. The parameters analyzed were plant species composition, Morishita Index, Mann-Whitney test, Regression and Correlation test as well as RDGR (Relative Diameter of Growth Rate). The result of experiment was found 40 species of trees sprouting type in forest permanent plot Bukit Pinang-Pinang. The pattern of sprouting type trees distribution in the study locations was found to have a clustered, random and uniform pattern. Relative Diameter Growth Rate (RDGR) of 40 sprouting types of trees in the Bukit Pinang-Pinang forest permanent plots ranged from 0.003 cm/cm/year to 0.0288 cm/cm/year. Altitude did not affect  RDGR of an individual tree sprouting type for 31 years
Penentuan Massa dan Waktu Kontak Optimum Adsorpsi Karbon Aktif Dari Ampas Tebu sebagai Adsorben Logam Berat Pb Riki Irwandi; Silvia Reni Yenti; Chairul Chairul
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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Bagasse is one of the agricultural or industrial waste that can pollute the environment. One effort to improve the economic value of the bagasse can be done with the process into activated carbon. This study aimed to examine the mass effect of activated carbone and the time contact of the bagasse activated carbon adsorption used for heavy metal Pb adsorbent, and to study the characteristics of the activated carbon produced, among others, ash content and moisture content. This research was conducted in three phases were the raw material preparation, the manufacture of activated carbon, and the adsorption of Pb in PbSO4 solution. Variations in the mass carbone used in this study were 1; 2; and 3 gram. As for the time variation adsorption used were 30; 60; 90; and 120 minutes. Percent adsorption is best obtained when the mass of activated carbone of 3 grams and the optimum time contact of 90 minutes is equal to 94,15 %.Keywords: adsorbent, bagasse, activated carbone, mass of activated carbone, adsorption time
Produksi Etanol Dari Limbah Kulit Nanas Dengan Metode Solid State Fermentation (SSF) Terhadap Variasi Waktu Dan Variasi Ukuran Partikel Substrat Reni Oktaviani; Chairul Chairul; Said Zul Amraini
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 1, No 1 (2014): Wisuda Februari Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Solid State Fermentation (SSF) is a form of solid substrate fermentation with low humidity levels. This study aims to determine the maximum time of the fermentation process to produce ethanol with SSF method and studying the kinetics of cell growth of Zymomonas mobilis for variations in particle size of the substrate. Pineapple peel waste is used as a raw material with a variety particle size of substrate in the form of slurry, 1x1 cm and 2x2 cm. Time of fermentation sampling conducted in 6; 12; 18; 24, 30, and 36 hours. Environmental conditions Zymomonas mobilis growth adjusted to pH 5 and 30 ° C. Analysis carried out in the study is the analysis of ethanol content using alcoholmeter and calculation of the number of cells by turbidity method using UV spectrophotometer to determine the kinetics of cell growth of Zymomonas mobilis. The maximum time obtained in this study was 24 hours for all particle size of the substrate. In  fermentation process with the SSF method, the kinetics of cell growth of Zymomonas mobilis and ethanol concentration is influenced by the particle size of the substrate. The highest ethanol concentrations obtained was 33% V on substrate particle size slurry with maximum specific growth rate  0,43/hour Keyword : Fermentation, Solid State Fermentaton (SSF), Zymomonas mobilis, Pineapple peel, kinetics cell, ethanol
Pengaruh Laju Pengadukan Terhadap Biokonversi Reject Nanas Menjadi Bioetanol Intan Oktaviani; Adrianto Ahmad; 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

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Abstract

Bioethanol production can be done by a process of fermentation material containing glucose, cellulose fiber and starch. Pineapple is one of the ingredients containing glucose. This study produces bioethanol from reject pineapple juice. The purpose of this study to determine the effect of stirring rate on bioethanol yield and to get the best conditions in the manufacture of bioethanol made from pineapple juice reject. There are several stages in the research, the preparation of raw materials, fermentation, and purification products. The variables used are the stirring speed in the process of fermentation: 100, 150, 200, 250, and 300 rpm with fermentation time 12, 24, 36, 48, 72, 84, 96, 108 and 120 hours. Anaerobic fermentation process takes place with the help of the yeast Saccharomyces cerevisiae with the addition of some nutrients. To measure the ethanol formed, the purification process is carried out using a rotary evaporator. The results showed that the highest ethanol content of 10% v/v with yield of 95.32% obtained at the stirring rate of 200 rpm with a fermentation time of 60 hours.Keywords: Bioethanol, Reject pineapple, Stirring, Saccharomyces cerevisiae.
Pengolahan Limbah Cair Industri Pulp Dan Kertas Dengan Metode SRAOP (Sulfate Radical-Advanced OxidationProcess) Menggunakan Katalis Nanomaterial Cobalt Framework (Co@NC) Eka Trisnawati; Edy Saputra; Chairul Chairul
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

Catalyst cobalt nanomaterial (Co@NC) was prepared by MOF strategy using rhombic dodecahedral cobalt based on Zeolitic Imidazolate Framework -67 (ZIF-67) as an effective precursor and template. Co@NC was successfully synthesized by reacting cobalt (II) nitrate and 2-methylimidazole with methanol solvent at room temperature and allowed to stand for 48 hours at room temperature to form a purple solid. Then it is carbonized at 600oC for 6 hours with argon. Their properties were characterized by X-ray diffraction (XRD). The Catalyst Co@NC catalyst has 4 peaks that appear at an angle of 2θ: 44.24 °, 51.70 °, 71.03 °, 79.73 ° which are perfectly indexed to the metal characteristics of Co [JCPDS File No. 89-4307]. The catalyst activity of Co@NC was evaluated for the oxidation degradation of organic compounds in the pulp and paper industrial wastewater with radical sulfate. Effect of catalyst concentration (0; 0.1; 0.2; 0.3; 0,4 g/L) and reaction time 120 minutes was investigated in this study. The optimum conditions with the percentage of COD removal reached 80,92% obtained at 120 minutes, catalyst concentration 0.4 g/L, concentration of peroxymonosulfate 2 g/L, reaction temperature of 30oC. Therefore, the Co@NC nanomaterial is very feasible as a catalyst in industrial applications that will be used for wastewater treatment effectively. Keywords: AOP, COD, MOF, Nanomaterial, Wastewater
Co-Authors Ade Ayu Oksari Ade Sri Umaiyah Adriani Lestari Adrianto Ahmad Ahmad Dedi Fadillah Ajma Nouri Alya Alissa Amun Amri ANDRIA AGUSTA Annisa Novianti Samin Anthoni Agustien Arfa Dinata Ageng Tirtayasya Cece R Cory Dian Alfarisi David Hamonangan Deasy Rahmayuni Desi Heltina Deswati Deswati Dewi Kusuma Nurmalasari Diah Pramushinta Dike Putra Ganda Dina Citra Naomi Dina Remina Drastinawati Drastinawati Edy Saputra Efrizal Efrizal Efrizal Efrizal Eka Trisnawati Elia Simanjuntak Ella Awaltanova Erizal Mukhtar Evelyn Evelyn Farhiz Lagan Fariez Fariez Ferry Lismanto Syaiful Futhanul Wewe Gilang Fathurrahman Hafidawati, Hafidawati Hauriah Hauriah I Gusti Bagus Wiksuana Ihsanul Khairi Iislamiyah Iislamiyah Imron Sutiono Intan Oktaviani Irdoni HS Irdoni Irdoni Irdoni S Irvan Fadli Wanda Karim Abdullah Khaira Khaira M Ridwan Afitra Maria Peratenta Sembiring Maulia Rayana Mery Sukmiwati Mohammad Rezky Muhammad Rivai Multi Handriyani Nadhira Iffah Lisandra Nurainas Nurainas Nurainas Nurainas Nurmiati Nurmiati Nuvicha Rizqi Yuniva Zikra Oci Khairani Rafly Rafly Reni Kuswanazia Reni Oktaviani Rian Efrizal Riki Ariyadi Riki Irwandi Rizka Sefmaliza Roni Roni Rusnam Rusnam Said Said Said Zul Amraini Shintia Oktaviani Silvia Reni Yenti Sisi Oktadira Kalpatari Sri Budi Sulianti Sri Meilani Sri Rezeki Muria Sunarno Sunarno Suwirmen, Suwirmen Syafira Junia Ardhani SYAIFUL BAHRI Syelvia Putri Utami Tafrikhatul Walidah Tiara Tiara Tri Murningsih Wahyu Mey Riswanto Winarto Tarigan Wisrayetti Wisrayetti Yelmida Azis Yeni Rizki Yolanda Amalia YULIASRI JAMAL Yuthia Aulia Riani ZA ZA Zozy Aneloi Noli Zuherti Zainul Zuhri Syam