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All Journal Jurnal Ilmu Lingkungan Jurnal Penelitian dan Pengembangan Sains dan Humaniora (JPPSH) Jurnal Teknik Kimia TEKMAPRO Journal of Industrial Engineering and Management Scan : Jurnal Teknologi Informasi dan Komunikasi JURNAL INTEGRASI PROSES International conference on Information Technology and Business (ICITB) Konversi IJEMS (Indonesian Journal of Environmental Management and Sustainability) Chemistry Indonesian Journal of Chemical Research Journal of Education Action Research Jurnal Inovasi Teknik Kimia G-Tech : Jurnal Teknologi Terapan Nusantara Science and Technology Proceedings Quimica : Jurnal Kimia Sains dan Terapan Jurnal Teknik Kimia Indonesia AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Seminar Nasional Ilmu Terapan Serambi Engineering
Ni Ketut Sari
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences Other

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PRODUKSI BIOETHANOL DARI RUMPUT GAJAH SECARA KIMIA Sari, Ni Ketut
Jurnal Teknik Kimia Vol 4, No 1 (2009): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v4i1.118

Abstract

Availability of bulrush can be obtained by continue and abundance, representing one the less exploited crop.Bulrush only used as livestock food, sometimes bulrush also considered to be intruder crop. But bulrush have cellulose rate, glucose, extract able to be used as one the ethanol producer materials. Obtained Ethanol rate from study produce bio ethanol from bulrush between 23-28 %, to increase purity of ethanol rate conducted bydissociation use batch distillation. Research produces bio ethanol from bulrush chemically to look for bio ethanol alternative raw material and study sour hydrolysis process and fermentation. In research produce bio ethanol from bulrush chemically to process hydrolysis at condition remains to: temperature 30oC, water 7 liters,hydrolysis time 1hour and condition change: bulrush weight 50, 100, 150, 200, 250, 300 (gram), HCL condensation volume 10, 20, 30, 40, 50(ml). Is then continued by fermentation process at condition remain to:temperature 30oC, pH 4.5; fermentation volume 500 ml and condition change: fermentation time 4, 5, 6, 7, 8(day), starter 8 %, 10 %, 12 %. From research produces bio ethanol from bulrush chemically obtained [by] result, [at] best glucose rate hydrolysis process 26.29 %, bulrush weight 200 gram. At best condition ferment process use saccharomyces cerevisiae starter 10 % during 6 day, yielding ethanol equal to 27.71 % and glucose rate is rest of 8.09 %. To obtain get purity ethanol product to process separation of continuation with batch distillation, after conducted separation continue to be obtained ethanol rate (90-95) %. From result is obtained that is ethanol rate (90-95) %, bulrush can be used as alternative raw material making of bio ethanol. But for the standard of bio ethanol that is ethanol rate above 98 %, so that require to furthermore process.  Keyword: bio ethanol, fermentation, hydrolysis, purification, bulrush 
VAPOR-LIQUID EQUILIBRIUM (VLE) WATER-ETHANOL FROM BULRUSH FERMENTANTION Sari, Ni Ketut
Jurnal Teknik Kimia Vol 5, No 1 (2010): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v5i1.138

Abstract

Liquid-vapor equilibrium date need in separation process for example distillation, extraction,absorbsi processes, binary system or multi component system. Be inside Liquid-vapor equilibriumdate can be used for strenght what is mixture faundation azeotropic or zeotropic mixture. For canbe Liquid-vapor equilibrium date ethanol-water, generaly used raw material wich pro analitic (pro analitic ethanol), In research will example for used raw material wich technical that isbulrush fermentation yield wich already distillation (technical ethanol). This research can beliquid-vapor equilibrium date binary system ethanol-water, verification of eksperiment yield withliterature date, and can be temperature date in distilate and in bottom binary system ethanolwater.Research used device of Still Othmer Glass, raw material ethanol wish used that istechnical and pro analitic with variable of ethanol feed composition that is 0 ; 0.2 ; 0.4 ;0.6 ;0.8 ;1(mol fraction) and constant pressure 300 bar. Ethanol yield wich used analysis usedspectrofotometer pharo 100. From yild research wich used, than liquid-vapor equilibrium datebinary system ethanol-water direction azeotropic point at ethanol composition 0.98 mol fraction,and date wish used can be used in calculation at distilation, extraction, absorbsi processes.Keywords : Azeotropes, fermentation, bulrush, binary system.
DATA KESETIMBANGAN UAP-AIR DAN ETHANOL-AIR DARI HASIL FERMENTASI RUMPUT GAJAH Sari, Ni Ketut
Jurnal Teknik Kimia Vol 6, No 2 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v6i2.388

Abstract

The high purity of ethanol (Pro Analitic) commonly used for row material to get the VLE Value, but the research used the technical ethanol that from distillation of the product bulrush  fermentation. The research purpose to find the value of VLE on the binary system ethanol-water. Then the result compared with literature. Still othmer glass was used as main device and the row material from high purify ethanol (PA) and moderate. Moderate Purity ethanol (Technical ethanol). These row material combine with various composition are 0; 0,2 ; 0,4 ; 0,6 ; 0,8 ; 1 (mole Fraction) and constant  pressure 300 bar. Next, the product was analyzed by spectrophotometer pharo 100. Then the result was compared with literature value and show that the value close to the literature value. From the VLE curve show that the azeotropic point in the composition of ethanol 0,98 (molefraction) Keywords : Azeotropes, azeotropic point, bulrush, VLE on the binary system ethanol-water,
DATA KESETIMBANGAN UAP-AIR DAN ETHANOL-AIR DARI HASIL FERMENTASI RUMPUT GAJAH Sari, Ni Ketut Sari
Teknik Kimia Vol 1, No 1 (2012): BERKALA ILMIAH TEKNIK KIMIA
Publisher : jurusan teknik kimia

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Abstract

Umumnya digunakan bahan baku yang etanol pro analisis untuk memperoleh data kesetimbangan uap-air dan etanol-air. Dalam penelitian akan dicoba untuk menggunakan bahan baku etanol teknis yaitu hasil fermentasi rumput gajah. Penelitian bertujuan memperoleh data kesetimbangan sistem biner uap-air dan etanol-air dan membandingkan hasil eksperimen dengan data literatur. Penelitian menggunakan :alat Glass Othmer Still, bahan baku etanol teknis dan pro analisis, variabel komposisi umpan masuk etanol yaitu 0 ; 0,2 ; 0,4 ; 0,6 ; 0,8 ; 1 (fraksi mol) dan tekanan dijaga konstan 300 bar. Hasil etanol yang diperoleh  di analisis menggunakan spektrofotometer pharo 100. Dari hasil penelitian diperoleh kurva kesetimbangan sistem biner uap-air dan etanol-air yang di bandingkan dengan data literatur. Hasil menunjukkan  mendekati sama. Dari hasil penelitian yang diperoleh, maka kurva kesetimbangan sistem biner uap-air dan etanol-air menunjukkan titik azeotropik pada komposisi etanol 0,98 fraksi mol. Kata kunci : Azeotropik, data kesetimbangan sistem biner uap-air dan etanol-air, rumput gajah, titik azeotrop
Simulation of Activity Coefficient System Ternary in Acetone Buthanol Ethanol with Uniquac Equation Ketut, Sari Ni; Ernawati, Dira
Prosiding International conference on Information Technology and Business (ICITB) 2017: INTERNATIONAL CONFERENCE ON INFORMATION TECHNOLOGY AND BUSINESS (ICITB) 3
Publisher : Prosiding International conference on Information Technology and Business (ICITB)

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Abstract

Simulation of activity coefficients ternary systems using matlab programming language, which results in the appearance of the graph using a spreadsheet tool, less effective and efficient, so it is necessary for the visualization of object-oriented programming language, in addition to easy to be developed at a time when that will come, it has other benefits, in a device project software can use a variety of programming language that supports object-oriented programming, such as C#.Net and VB.Net. This research aims to display the batch distillation simulation of visual binary systems using object-oriented programming. Ethanol buthanol ethanol non azeotropic ternary system, simulation of activity coefficients with rigorous method using a model Differential-Algebraic-Equations (DAEs), where the completion of the model using the language C#.Net, the basic concepts of object-oriented programming consists of classes, objects, abstraction, encapsulation, polymorphism. Antoine parameter data and activity coefficients derived from experimental data. Dimension less time and pressure are set constant, while the variable composition liquida. Profile of liquida composition and vapor composition function dimensionless can be displayed directly from the desktop, to have the non azeotropic ternary system value profile activity coefficient is not equal to one, while the ternary system non azeotropic approaching one. Profile of liquida composition and vapor composition maximum from ternary system non azeotropic is 0.98, while for the ternary system non aeotropic approaching one. Economically using C#.Net language faster, time efficiency and better performance profile. Keywords: Activity coefficients, C#.Net, DAEs, rigorous method, ternary systems
PEMBUATAN BIOETANOL BERBASIS GLUKOSA OFF GRADE DENGAN PROSES FERMENTASI MENGGUNAKAN FERMIOL Khurniawati, Khurniawati; Fathoni, Muhamad Uman; Sari, Ni Ketut
Jurnal Teknik Kimia Vol 13, No 2 (2019): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v13i2.1409

Abstract

Glukosa off grade merupakan glukosa yang belum bersertifikasi Standart Nasional Indonesia(SNI) dikarenakan memiliki warna kecoklatan dan berbau khas gula, sehingga menurunkan hargajual glukosa off grade. Produk olahan dari glukosa off grade merupakan sarana yang tepat untukmeningkatkan daya jualnya di pasaran. Salah satu solusi adalah dengan mengubah glukosa off gradetersebut menjadi produk bioetanol dengan menggunakan proses fermentasi. Penelitian ini bertujuanuntuk menghitung kadar optimum glukosa dan waktu terbaik dalam fermentasi glukosa off grademenjadi bioetanol.. Dalam penelitian pembuatan bioetanol berbasis glukosa off grade dengan prosesfermentasi menggunakan fermiol digunakan variabel konsentrasi glukosa awal 10%; 12%; 14%;16%; dan 18% (b/b), dan waktu fermentasi 3, 4, 5, 6, 7(hari). Proses fermentasi dilakukan padakeadaan anaerob, suhu ± 30oC, volume larutan 800 ml, kecepatan pengadukan 100 rpm, NPK danUrea 0,1g/100 ml, fermiol 0,15g/liter. Diperoleh hasil terbaik dengan kadar bioetanol sebesar 11%(v/v) dan persentase yield sebesar 61,63% pada perlakuan menggunakan konsentrasi glukosa awal14%(b/b) selama 6hari. Serta kadar sisa glukosa terbaik sebesar 3,2(%b/b) pada perlakuanmenggunakan konsentrasi glukosa awal 14% (b/b). DOI : https://doi.org/10.33005/tekkim.v13i2.1409
PERANCANGAN RANGKAIAN MOTOR GENERATOR SEBAGAI ENERGI GERAK YANG EFISIEN Saputra, Wahyu S J; P, Eva Yulia; Sari, Ni Ketut
SCAN - Jurnal Teknologi Informasi dan Komunikasi Vol 12, No 2 (2017)
Publisher : Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/scan.v12i2.917

Abstract

Abstrak. Semakin besarnya kebutuhan akan minyak bumi di dunia terlihat dari besarnya tingkat produksi pengolahan minyak di berbagai belahan dunia. Menurut BP Statistical Review of World Energy tercatat pada tahun 2015 peringkat pertama produsen minyak bumi adalah Amerika Serikat dengan jumlah produksi mencapai 12.704.000 Barel per Hari, sedangkan Indonesia berada di urutan ke 24 dengan jumlah produksi mencapai 825.000 Barel per Hari. Berdasarkan latar belakang tersebut maka dalam penelitian ini dibuat sebuah perancangan motor generator sebagai sumber energi gerak yang efisien. Motor generator menggunakan metode axial flux untuk mendapatkan efisiensi bahan, karena bentuk axial flux lebih kompak daripada bentuk radial flux. Jenis motor sebagai sumber tenaga yang digunakan adalah jenis Brushless Direct Current (BLDC) motor. BLDC motor adalah jenis motor yang paling efisien saat ini. Alternator yang digunakan pada penelitian ini menggunakan tipe axial flux dengan kumparan berinti udara untuk mengurangi hambatan akibat perubahan medan magnet. Perancangan model Motor Generator (alternator) dibangun dengan menggunakan software yang khusus untuk mendesain teknik. hasil dari perancangan ini akan diimplementasikan dan diuji efisiensi dengan membandingkan tegangan masukan yang dikonsumsi oleh motor dan tegangan keluaran yang dihasilkan oleh alternator.   Kata Kunci : Motor, Brushless DC Motor, Alternator, Kumparan Inti Udara
BIOETANOL DARI LIMBAH CAIR TEPUNG TERIGU DENGAN PROSES FERMENTASI MENGGUNAKAN TURBO YEAST Bachtiar, Sofi; Wahyuningtiyas, Retno; Sari, Ni Ketut
Jurnal Teknik Kimia Vol 16, No 1 (2021): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v16i1.2845

Abstract

Kebutuhan akan tepung terigu di Indonesia mengalami peningkatan setiap tahunnya, menyebabkan industri tepung terigu meningkatkan kapasitas produksinya sehingga jumlah limbah yang dihasilkan juga semakin meningkat, solusi adalah dengan mengubah limbah cair tepung terigu menjadi produk bioetanol. Bioetanol adalah etanol yang dibuat dari biomassa yang mengandung komponen pati atau selulosa. Bahan yang digunakan untuk pembuatan bioetanol dalam penelitian ini yaitu limbah cair tepung terigu serta ragi yang digunakan yaitu Alcotec 48 Turbo Yeast. Pada penelitian pembuatan bioetanol dari limbah cair tepung terigu dengan proses fermentasi menggunakan Turbo Yeast akan menghasilkan suatu bioetanol yang akan dianalisis kadar alkoholnya menggunakan refraktometer alkohol. Kandungan glukosa limbah cair tepung terigu setelah proses hidrolisis sebesar 11% (v/v). Hasil terbaik pada proses fermentasi yaitu pada kadar turbo yeast 10% dan berlangsung pada hari ke 5 yang menghasilkan kadar bioetanol sebesar 37% (v/v). Setelah dilakukan proses optimasi hasil dengan metode Response Surface Methodology (RSM) menggunakan aplikasi Minitab 17 didapatkan kadar turbo yeast optimum sebesar 11.6569% dan waktu optimum fermentasi 5 hari dihasilkan kadar alkohol sebesar 37.2073%.  DOI : https://doi.org/10.33005/jurnal_tekkim.v16i1.2845
Pembuatan bioetanol dari rumput gajah dengan distilasi batch Ni Ketut Sari
Jurnal Teknik Kimia Indonesia Vol 8, No 3 (2009)
Publisher : ASOSIASI PENDIDIKAN TINGGI TEKNIK KIMIA INDONESIA (APTEKIM)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/jtki.2009.8.3.4

Abstract

Elephant grass is available continuously and in abundance, but has only been utilized as animal feed, and is sometimes regarded as a nuisance. However, elephant grass contains cellulose, glucose and starch that can be utilized as raw materials for ethanol production. The concentration of ethanol obtained from a study on the production of bioethanol from elephant grass was between 7-11%. To improve the purity of the ethanol, a batch distillation separation process was performed.  In the study of bioethanol production from elephant grass, a hydrolysis process was performed at the following fixed condition 30 oC temperature, 7 liter of water, 1 hour of hydrolysis time, while the following variables were changed fermentation period of 4, 5, 6, 7, and 8 days, and starter concentration of 8, 10, and 12%. From the bioethanol production study, the following best condition was obtained: 200 gram of grass, 10% Saccharomyces cerevisiae starter for 6 days. This condition produced 27.71% ethanol, with a 8.09% residual glucose. To obtain a higher purity ethanol product, a subsequent separation using batch distillation was performed, resulting in 90-95% ethanol. Therefore, elephant grass can be used as an alternative raw material for bioethanol production.Keywords: bioethanol, fermentation, hydrolysis, elephant grass Abstrak Ketersediaan rumput gajah dapat diperoleh secara kontinu dan melimpah, seringkali hanya digunakan sebagai makanan ternak, dan terkadang rumput gajah juga dianggap sebagai tanaman pengganggu. Rumput gajah mempunyai kadar selulosa, glukosa, pati yang dapat digunakan sebagai salah satu bahan penghasil etanol. Kadar etanol yang diperoleh dari kajian produksi bioetanol dari rumput gajah antara 7-11%. Untuk meningkatkan kemurnian kadar etanol dilakukan pemisahan menggunakan distilasi batch. Dalam penelitian kajian produksi bioetanol dari rumput gajah dilakukan proses hidrolisis pada kondisi tetap suhu 30 oC, air 7 liter, waktu hidrolisis 1 jam, dan kondisi berubah yaitu berat rumput gajah 50, 100, 150, 200, 250, dan 300 gram, volume larutan HCl 10, 20, 30, 40, 50 mL. Kemudian dilanjutkan proses fermentasi pada kondisi tetap suhu 30 oC, pH 4,5, volume fermentasi 500 mL dan kondisi berubah yaitu waktu fermentasi 4, 5, 6, 7, 8 hari, dan starter 8, 10, dan 12%. Dari penelitian kajian produksi bioetanol dari rumput gajah diperoleh hasil terbaik  yaitu: berat rumput gajah 200 gram, starter Saccharomyces cerevisiae 10% selama 6 hari, menghasilkan etanol sebesar 27,71% dan kadar glukosa sisa 8,09%. Untuk memperoleh produk etanol yang lebih murni dilakukan proses pemisahan lanjutan dengan distilasi batch, setelah dilakukan pemisahan lanjut diperoleh kadar etanol 90–95%, sehingga  rumput gajah dapat digunakan sebagai bahan baku alternatif pembuatan bioetanol.Kata Kunci: bioetanol, fermentasi, hidrolisis, rumput gajah.
Shelf-life Prediction of Soneca Using Accelerated Shelf-life Tests Approach to Critical Water Levels Jariyah; Shafira Suci Utami; Ni Ketut Sari; Kusuma Wardhani Mas’udah
Nusantara Science and Technology Proceedings 2nd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

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Abstract

Shelf life is information that must be included in food product packaging. Estimated shelf life of food products can be done conventionally (Extended Storage Studies) and acceleration (Accelerate Shelflife Testing). Estimation of shelf life by ASLT can be done using the critical moisture content approach, especially for products easily damaged by water absorption. The purpose of this study was to determine the shelf life of Soneca biscuits packaged using three different packages, namely Polypropylene (pp) plastic packaging, Metalized Plastic, and Aluminum foil. The method of determining the shelf life used in this study uses the ASLT method with a critical moisture content approach. Based on the research, it is known that the critical moisture content of biscuits is obtained when the product moisture content reaches 0.0812 (g H2O/g). The isothermic sorption curve of the biscuits obtained can be appropriately expressed using the Hasley model equation. Estimation of shelf life was carried out under storage conditions at 30 oC and 75% RH. The study results show that the predicted shelf life of biscuits with metalized plastic VM-PET packaging is 17.76 months, with aluminum foil packaging is 19.85 months and using PP plastic packaging is 1.72 months. Therefore, it is known that the best shelf life is the use of aluminum foil packaging.
Co-Authors Ahmad Rizky Safrudin Anggraeni, Verendria Putri Caesar Asif Faroqi Atha Mardhi Maulana Athobarani, Akmal Bachtiar, Sofi Baihaqi, Muhammad Nizammudin Dimas Hafidz Maulana Dira Ernawati Erwan Adi Saputro Esnandhik, Ubaidillah Bramantyo Fadhilah, Said Ahmad Fathoni, Muhamad Uman Fatimah Azzahra Fatkhurin, Elma Fergilang, Jibraltar Fernanda Andika Arya Revandana Gemilang, Surya Jalil, Mohd Jumain Jariyah Jariyah Jonathan Fayol Sinaga Ketut Sumada Caecillia Pujiastuti Khurniawati, Khurniawati Kusuma Wardhani Mas’udah Laurentcya, Treyna Dara Lestari, Rowina Maria Anityasari Monica, Clarissa Putri Muhammad Ashfal Ashfiya Nurhediana, Silvana Dwi Nurjaya, Luh Asri Ningsih Widhi P, Eva Yulia Pratiwi, Firdiani Dwi Pujiastuti, Caecilia Rachma Putri Salsya Dilla Rachmad Ramadhan Yogaswara Saputra, Wahyu S J Sari, Komang Nickita Shafira Suci Utami Silvana Dwi Nurherdiana Suryanto, Tri Lahtif Mardi Suwandana, I Made Adi Syaiba Qurrotul Aini Vinata, Restu Sebrina Wahyuningtiyas, Retno Wijaya, Miftachul Yustica Chandra Kania