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All Journal Ilmu Pendidikan Cakrawala Pendidikan Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Tajdida Jurnal Pendidikan Pancasila dan Kewarganegaraan Union: Jurnal Ilmiah Pendidikan Matematika Kesmas Indonesia: Jurnal Ilmiah Kesehatan Masyarakat JOURNAL OF HEALTH SCIENCE (JURNAL ILMU KESEHATAN) Jurnal Ilmu Kebidanan (Journal of Midwivery Science) Jurnal Kesehatan Ibu dan Anak Equilibrium Journal of Chemical Engineering Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmu Kebidanan (Journal of Midwivery Science) Jurnal Integrasi dan Harmoni Inovatif Ilmu-ilmu Sosial Perwira Journal of Economics and Business (PJEB) Jurnal Elektro dan Teknologi Informasi Humanities Horizon Journal Jurnal Bengawan Solo: Pusat Kajian Penelitian dan Pengembangan Daerah Kota Surakarta
Margono Margono
Universitas Negeri Malang
Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Public Health Social Sciences Veterinary Other

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Journal : Equilibrium Journal of Chemical Engineering

 1 
Pretreatment Ethanol From Cellulosic Endah Retno Dyartanti; Margono Margono; Ike Puji Lestari; Muhamad Iqbal Putra; Ulfa Intan Pratiwi
Equilibrium Journal of Chemical Engineering Vol 3, No 1 (2019): Volume 3 No 1 July 2019
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v3i1.43883

Abstract

Abstract. Pre-treatment is an important tool for practical cellulose conversion processes and can be carried out in different ways such as mechanical pre-treatment, steam explosion, ammonia fiber explosion, supercritical CO2 treatment, alkali or acid pretreatment, ozone pre-treatment, physicochemical pretreatment, dilute-acid pretreatment and biological pre-treatment. Biomass pretreatment with hot water (HW) is the most investigated physicochemical method use the differences in the thermal stabilities of the major components of lignocellulosic materials. Acid pretreatment of lignocellulosic biomass aims at increasing the sugar substrate digestibility, defined as the concentration of reducing sugars after the hydrolysis, by microorganisms. Acid hydrolysis is an attractive pretreatment method as the hemicellulose degradation runs with the efficiency of approximately 20-90%, depending on the process conditions. Dilute acid (DA) processes with continued research and development, no significant breakthroughs have been made to raise the glucose yields much higher than 65-70%. Acid pretreatment is much more effective than water and alkaline pretreatment in terms of cellulose accessibility increase compared with DA and HW pretreatment. Keywords: ethanol, cellulosic, pre-treatment
Two Step and Direct Fermentation in the Production of Ethanol from Starch: A Short Review Endah Retno Dyartanti; Margono Margono; Anisa Raditya Nurohmah; Shofirul Sholikhatun Nisa; Novan Riantosa
Equilibrium Journal of Chemical Engineering Vol 4, No 1 (2020): Volume 4 No 1 July 2020
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v4i1.46130

Abstract

Abstract.  Ethanol as a renewable fuel has been widely produced in various countries. One source of raw material for producing ethanol is starch. The process of producing ethanol from starch needs to be pretreated so that starch molecules can split into smaller ones. However, this process requires pre-treatment which will expensive more than ethanol from sugar. There are two types of pretreatment i.e. two-step ethanol production and direct fermentation. There is two kind of hydrolysis, acid hydrolysis, and enzymatic hydrolysis. Two-step ethanol production is a conventional method that separates pretreatment and fermentation process, while direct fermentation is the direct production of starch into ethanol using recombinant yeast that co-produces enzymes such as amylose and glucoamylase. Two-step ethanol production has the advantage of high yield but needs high cost whereas, direct fermentation has the advantage of low-cost production but needs longer time. Common starch to ethanol production consists of two stages, namely hydrolysis of raw materials into glucose and fermentation into ethanol. Both of these processes can be run on average at temperatures of 30-80oC with a pH range of 4-6 and varying time intervals. The enzyme used depends on the source of the starch, but the most commonly used is Saccharomyces cerevisiae.Keywords: Ethanol, starch, pre-treatment
The Concentration of Polyunsaturated Fatty Acid in Palm Oil by Urea Complexation Dwi Ardiana Setyawardhani; margono margono; Ardi Pratama; Fermanditya Petratama
Equilibrium Journal of Chemical Engineering Vol 2, No 1 (2018): Volume 2 No 1 January 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i1.40430

Abstract

Linoleic acid is a Poly-Unsaturated Fatty Acid (PUFA) that corresponds to Omega 6 Fatty Acid. This is the major component of vegetable oil and very important for health. As an essential fatty acid, linoleic acid has to be obtained from foods. Consumption of omega fatty acid in the form of concentrate has more benefit than the whole oil. Fulfilling this requirement, effective method to separate PUFAs from vegetable oils is needed. One of the favorable methods is urea complexation. Palm oil was used as the fatty acids resource due to its potential feedstock in Indonesia. This aim of this research is to study the effect of urea, ethanol and free fatty acid (FFA) ratios during complexation of palm oil. This research was developed in three steps, 1) free fatty acid preparation from palm oil (saponification process), 2) crystallization of the fatty acids mixture and 3) filtration for separating the unsaturated fatty acid. Concentrated linoleic acid is obtained in the liquid phase, while the saturated fatty acid is obtained in the solid. This research resulted that the concentration of PUFA was increasing as the ratio of urea, FFA and ethanol increases.
Stripping Bioethanol from Fermented Molasses in A Packed Tower Andina Indah Sekararum; Andhika Sulistyani Putri; Margono Margono
Equilibrium Journal of Chemical Engineering Vol 2, No 1 (2018): Volume 2 No 1 January 2018
Publisher : Program studi Teknik Kimia UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/equilibrium.v2i1.40431

Abstract

The high price of bioethanol is the barrier of its implementation as renewable energy sources. Therefore, efforts to reduce its price is an important factor to drive the implementation. Stripping is a way to separate bioethanol from the broth which will be cheaper than distillation process. This research was aimed to separate bioethanol from its fermented molasses. The effect of feed flow rate, air flow rate and feed temperature were investigated. A column with inside diameter of 0.1 m was used and packed with 0.02 x 0.016 m PVC rashig ring at 1 m of bed. The broth was fed from the top side and the air stripper was flown down from the bottom side. Six millimeters of the top product was collected at steady state condition for analysis of bioethanol concentration. The best experiment was the one which had feed flow rate 1,5 L/min and stripping air flow rate of 5,85 L/min. It resulted bioethanol content of 19.39% or equivalent to 38.5% stripped out of the broth.
Co-Authors A. Rosyid Al Atok, A. Rosyid Al Adhi Kusmantoro Andhika Sulistyani Putri Andina Indah Sekararum Anisa Raditya Nurohmah Ardi Pratama Atang Wiedyastanto Bambang Hadi Kunaryo Benedictus Kusmanto Danang Kurniawan Danuta Savitskaya Dwi Ardiana Setyawardhani Dwi Zulkarnaen Edi Suhartono Endah Retno Dyartanti Endah Retno Dyartanti Estrin Handayani Fermanditya Petratama Ghonimah Z Ainiyah Gisyamadia Gisyamadia Gunawan Adi Pratio Hesty Widyasih Ike Puji Lestari Imadudin Harjanto Indra Kertati Laksono Trisnantoro Margi Hastuti Maya Andriyani Mina Yumei Santi Mudinillah, Adam Muh Amirudin Muhamad Iqbal Putra Muhamad Muhamad Syariful Wafa Muhammad Amir Maruf Muhammad Amiruddin Muhammad Khoirul Amin Nanik Setiyawati Novan Riantosa Nur Aksin Nur Djanah Rachmi Nurhidayati Revly Manggala Putri Rista Ayu Mawarti Shofirul Sholikhatun Nisa Siti Masiroh Solly Aryza Sri Untari Suherni Suherni Suparlan Al Hakim Sylvi Wafda Nur Amelia Tety Bekti Sulistyorini Ulfa Intan Pratiwi Wulandari Wulandari Yuliana Yuliana