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All Journal Jurnal Rekayasa Proses International Journal of Renewable Energy Development Jurnal Kompetensi Teknik Jurnal Bahan Alam Terbarukan Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Konversi Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Jurnal Rekayasa Proses RANDANG TANA - Jurnal Pengabdian Masyarakat Kumawula: Jurnal Pengabdian Kepada Masyarakat Jurnal Ilmiah Cendekia Eksakta Jurnal Inovasi Teknik Kimia Jurnal Pengabdian Masyarakat: Darma Bakti Teuku Umar ASEAN Journal of Chemical Engineering Jurnal Pengabdian kepada Masyarakat Nusantara ABDIMASY: Jurnal Pengabdian dan Pemberdayaan Masyarakat PENGABDI: Jurnal Hasil Pengabdian Masyarakat REACTOR : Journal of Research On Chemistry And Engineering Journal of Industrial Community Empowerment Jurnal Teknik Kimia dan Lingkungan Sainteknol : Jurnal Sains dan Teknologi
Bayu Triwibowo
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Journal : Jurnal Bahan Alam Terbarukan

 1 
TEORI DASAR SIMULASI PROSES PEMBAKARAN LIMBAH VINASSE DARI INDUSTRI ALKOHOL BERBASIS CFD Triwibowo, Bayu
Jurnal Bahan Alam Terbarukan Vol 2, No 2 (2013): December 2013
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v2i2.2795

Abstract

In the midst of restrictions issue on the use of fossil fuels, the world began to move towards the use of renewable fuels. One such fuel is bio-ethanol. Production of bio-ethanol itself leaves vinasse wastetreatment problems with large discharge. There have been many ways to treat vinasse one of which is the burning of concentrated vinasse. Combustion process is a complex process in terms physical and chemical. Complex phenomenon will be difficult to be analyzed simultaneously and comprehensively when using conventional techniques. Simulation of combustion process based on CFD can be one such solution. In the case of vinasse as fuel and air as oxydizer the selected combustion model is a non-premixed combustion models with probability density function.
ASPEK PERTIMBANGAN DALAM SIMULASI FERMENTASI FASE GAS BERBASIS CFD Triwibowo, Bayu
Jurnal Bahan Alam Terbarukan Vol 2, No 1 (2013): June 2013
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v2i1.2911

Abstract

In the midst of restrictions issue on the use of fossil fuels, the world began to move towards the use of renewable fuels. One such fuel is hydrogen. Hydrogen itself could synthesized from fermentation method. Complex phenomenon will be difficult to be analyzed simultaneously and comprehensively when using conventional techniques. Optimation would be important since yield hydrogen from fermentation method was very small. Cause of few obstacles such as comprehensive phenomenon data not exsted mades this process very difficult to optimize. Simulation of hydrogen fermentation based on CFD would be one of the solution to retrieve phenomenon data comprehensively
DRYING KINETICS OF OIL PALM FROND WASTE USING SIMPLE BATCH OVEN DRYER Halim, Abdul; Triwibowo, Bayu
Jurnal Bahan Alam Terbarukan Vol 5, No 1 (2016): June 2016 [Nationally Accredited]
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v5i1.4151

Abstract

Drying phenomena of oil palm frond waste as agriculture waste was observed using simple batch oven dryer. The operation temperatures were 50, 80 and 120 °C. The sample of oil palm frond was weighed periodically every 30 minutes. Moisture content, shrinkage phenomena and drying kinetic model were investigated to the difference operation temperature. Experimental result exhibited that temperature influent significantly to the drying rate. The water transport controlled by diffuse mechanism. Shrinkage occurred in radial direction and decreased the size to almost 65% from initial size. In longitudinal direction almost is not change of size.  
TEORI DASAR SIMULASI PROSES PEMBAKARAN LIMBAH VINASSE DARI INDUSTRI ALKOHOL BERBASIS CFD Triwibowo, Bayu
Jurnal Bahan Alam Terbarukan Vol 2, No 2 (2013): December 2013
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v2i2.2795

Abstract

In the midst of restrictions issue on the use of fossil fuels, the world began to move towards the use of renewable fuels. One such fuel is bio-ethanol. Production of bio-ethanol itself leaves vinasse wastetreatment problems with large discharge. There have been many ways to treat vinasse one of which is the burning of concentrated vinasse. Combustion process is a complex process in terms physical and chemical. Complex phenomenon will be difficult to be analyzed simultaneously and comprehensively when using conventional techniques. Simulation of combustion process based on CFD can be one such solution. In the case of vinasse as fuel and air as oxydizer the selected combustion model is a non-premixed combustion models with probability density function.
ASPEK PERTIMBANGAN DALAM SIMULASI FERMENTASI FASE GAS BERBASIS CFD Triwibowo, Bayu
Jurnal Bahan Alam Terbarukan Vol 2, No 1 (2013): June 2013
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v2i1.2911

Abstract

In the midst of restrictions issue on the use of fossil fuels, the world began to move towards the use of renewable fuels. One such fuel is hydrogen. Hydrogen itself could synthesized from fermentation method. Complex phenomenon will be difficult to be analyzed simultaneously and comprehensively when using conventional techniques. Optimation would be important since yield hydrogen from fermentation method was very small. Cause of few obstacles such as comprehensive phenomenon data not exsted mades this process very difficult to optimize. Simulation of hydrogen fermentation based on CFD would be one of the solution to retrieve phenomenon data comprehensively
DRYING KINETICS OF OIL PALM FROND WASTE USING SIMPLE BATCH OVEN DRYER Halim, Abdul; Triwibowo, Bayu
Jurnal Bahan Alam Terbarukan Vol 5, No 1 (2016): June 2016 [Nationally Accredited]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v5i1.4151

Abstract

Drying phenomena of oil palm frond waste as agriculture waste was observed using simple batch oven dryer. The operation temperatures were 50, 80 and 120 °C. The sample of oil palm frond was weighed periodically every 30 minutes. Moisture content, shrinkage phenomena and drying kinetic model were investigated to the difference operation temperature. Experimental result exhibited that temperature influent significantly to the drying rate. The water transport controlled by diffuse mechanism. Shrinkage occurred in radial direction and decreased the size to almost 65% from initial size. In longitudinal direction almost is not change of size.  
Improving the Quality of Bio-Oil Produced from Rice Husk Pyrolysis by Extraction of its Phenolic Compounds Fardhyanti, Dewi Selvia; Chafidz, Achmad; Triwibowo, Bayu; Prasetiawan, Haniif; Cahyani, Novia Noor; Andriyani, Sinta
Jurnal Bahan Alam Terbarukan Vol 8, No 2 (2019): December 2019 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v8i2.22530

Abstract

Rice husk is an agricultural waste which contains 50% cellulose, 25%-30% lignin and 15%-20% silica. It can be used as raw material of bio-oil. Bio-oil is liquid which produced by pyrolysis process. Bio-oil can be produced from the rice husk at 773 and 873 K. The main component of Bio-oil from rice husk pyrolysis at 773 and 873 K is phenolic compounds about 47.98% and 62.65%, respectively. It causes corrosive, low heating value, high acidity, high viscosity and unstable that causing an engine damage. The presence of phenolic compound decreases the quality of bio-oil. Therefore, it needs a process such as liquid-liquid extraction to reduce the phenolic compound using 80% methanol and 80% chloroform as a solvent. The extract and raffinate phase were analyzed using UV-Vis spectrophotometer. The aim of this research determine the effect of temperature pyrolysis for the characterization of bio-oil, the stirring speed and the temperature of the extraction for the distribution coefficient and the yield of phenolic compound. The results showed that the characterization of bio-oil produced from rice husk pyrolysis at 773 and 873 K are densities 1,040 and 1,042 Kg/m3; viscosities 9.3488 and 9.5007 cSt; acid numbers 46.75 and 52.45 mg KOH/g; pH 2.5 and 3; flash points 426 and 423 K and heating values 3.229 and 3.339 MJ/kg, respectively. The highest distribution coefficient and yield were obtained at 323 K and a stirring speed of 250 rpm. The distribution coefficient of bio-oil produced by pyrolysis at 773 and 873 K is 1.504, and 1.528, respectively. The yields of bio-oil produced by pyrolysis at 773 and 873 K are 58.885%, and 48.429%, respectively.  
Optimization of The Aqueous Enzymatic Extraction (AEE) of Rice Bran Oil With Cellulase Using Response Surface Methodology Astrilia Damayanti; Bayu Triwibowo; Megawati Megawati; Ahmed Tessario Ekanuramanta; Harianingsih Harianingsih; Kevin Thomas; Nurul Huda; Nuryoto Nuryoto
Jurnal Bahan Alam Terbarukan Vol 12, No 1 (2023): June 2023 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v12i1.42137

Abstract

Rice Bran Oil (RBO) is an oil extracted from rice bran with unsaturated fat content according to World Health Organization (WHO) standards. The enzymatic extraction process of rice bran for oil extraction using cellulase enzymes is considered effective because it is capable of producing oil. Parameters of temperature and incubation time have an influence on the yield of oil produced. So that research is needed regarding the optimum conditions of the enzymatic extraction process including temperature and incubation time on the yield and levels of FFA RBO.Software Design Expert was used in this study to optimize RBO extraction with cellulase using the Response Surface Methodology (RSM) method in the Central Composite Design (CCD) factorial experimental design. The selected independent variables consisted of incubation temperatures, namely 35, 50, and 65 0C and incubation time for 2, 3, and 4 hours. The results show that the RBO yield is 1.7% and the minimum target for FFA levels is 8.4% at a temperature of 51.5 0C with an incubation time of 4 hours. Processing data with Design expert software produces an analysis of ANOVA experimental data. Incubation time has a significant level (p0.05) on RBO yield and incubation temperature has a significant level (p0.05) on RBO FFA.
Co-Authors A Halim Abdul Halim Abdul Halim Achmad Chafidz Ahmed Tessario Ekanuramanta Aldiansar , Divifan Armyko Alfiansyah Aji Pratama Amin Retnoningsih Amrullah, Fauzan Anggun Septiamurti Annie Mufyda Rahmatika, Annie Mufyda Asnafi, Agus Astrilia Damayanti Bahlawan, Zuhriyan Ash Shiddieqy Cahyani, Novia Noor Catur Rini Widyastuti, Catur Rini Chafidz, Achmad Dewi Artanti Putri Dewi Selvia Fardhyanti Dhoni Hartanto Dody Herdian Saputra Riyadi Dody Herdian Saputra Riyadi Dwi Prasojo Dyta Silvia Mayasari Fauzan Amrullah Fauzan Amrulloh Fauziah, Whilda Fidyawati, F Gicha Maria Rahayu Hadiyanti, Luthfia Nur Haniif Prasetiawan Harianingsih, Harianingsih Heni Pujiastuti Hidayah, Uswatun Nur Kevin Thomas Kusuma, Andre Dianata Hogi Laraswati, Vivi Anggraeni Loveyanto, Rendy Okta Maharani Kusumaningrum Maksiola, Masni Mayasari, Dyta Silvia Megawati Megawati - Megawati Megawati Megawati Megawati Megawati Megawati Megawati Megawati Mezaki, Naufal Mudrik Miftahuddin Azhari Muhammad Fikri Al Ghifari Mutaqin, Afrizal Mai Ngabiyanto - Nina Hartini Nina Hartini Nur Qudus Nurazizah, Nilasari Nurul Huda Nuryoto Nuryoto Paramita, Oktavianti Pradana, Daffa Zamiira Pradiza, Zefanya Pradnya, Irene Nindita Prakasita, Iffat Ganjar Fadhila Prasojo, Dwi Pratama, Alfiansyah Aji Prayoga, Ade Bintang Prima Astuti Handayani Puspita, Dessy Ratna Putri, Dwiana Asmara Putri, Raden Rara Dewi Artanti Radenrara Dewi Artanti Putri, Radenrara Dewi Artanti Rahardjo, Teguh Hardi Ratna Dewi Kusumaningtyas Reshita Amalia Ramadhani Reshita Amalia Ramadhani Ria Wulansarie, Ria Rizki, Angela Dita Salwa, Dian Fatimatus Sandra Anggita Fadriana Sa’adah, Nur Septiamurti , Anggun Sinta Andriyani Solichin Solichin Syarifatur Richana Syarifatur Richana Syifa Karimah Trianita Satyawati Nabilah Wara Dyah Pita Rengga Zefanya Pradiza Zuhriyan Ash Siddieqy Bahlawa