Anondho Wijanarko, Anondho
Department of Chemical Engineering, Faculty of Engineering, University of Indonesia, Depok 16424, Indonesia

Published : 8 Documents
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Utilization of Bagasse Cellulose for Ethanol Production through Simultaneous Saccharification and Fermentation by Xylanase Samsuri, M; Gozan, Misri; Mardias, R; Baiquni, M; Hermansyah, Heri; Wijanarko, Anondho; Prasetya, Bambang; Nasikin, Mohammad
Makara Journal of Technology Vol 11, No 1 (2007)
Publisher : Directorate of Research and Community Services, Universitas Indonesia

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Abstract

Bagasse is a solid residue from sugar cane process, which is not many use it for some product which have more added value. Bagasse, which is a lignosellulosic material, be able to be use for alternative energy resources like bioethanol or biogas. With renewable energy resources a crisis of energy in Republic of Indonesia could be solved, especially in oil and gas. This research has done the conversion of bagasse to bioethanol with xylanase enzyme. The result show that bagasse contains of 52,7% cellulose, 20% hemicelluloses, and 24,2% lignin. Xylanase enzyme and Saccharomyces cerevisiae was used to hydrolyse and fermentation in SSF process. Variation in this research use pH (4, 4,5, and 5), for increasing ethanol quantity, SSF process was done by added chloride acid (HCl) with concentration 0.5% and 1% (v/v) and also pre-treatment with white rot fungi such as Lentinus edodes (L.edodes) as long 4 weeks. The SSF process was done with 24, 48, 72, and 96 hours incubation time for fermentation. Variation of pH 4, 4,5, and 5 can produce ethanol with concentrations 2,357 g/L, 2,451 g/L, 2,709 g/L. The added chloride acid (HCl) with concentration 0.5% and 1% (v/v) and L. edodes can increase ethanol yield, The highest ethanol concentration with added chloride acid (HCl) concentration 0.5% and 1% consecutively is 2,967 g/L, 3,249 g/L. The highest ethanol concentration with pre-treatment by L. edodes is 3,202 g/L.
Kinetic Model For Triglyceride Hydrolysis Using Lipase:Review Hermansyah, Heri; Wijanarko, Anondho; Dianursanti, Dianursanti; Gozan, Misri; Wulan, Praswasti P. D.K; Arbianti, Rita; Soemantojo, Roekmijati W.; Utami, Tania Surya; Yuliusman, Yuliusman; Kubo, Momoji; Shibasaki-Kitakawa, Naomi; Yonemoto, Toshiy
Makara Journal of Technology Vol 11, No 1 (2007)
Publisher : Directorate of Research and Community Services, Universitas Indonesia

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Abstract

Triglyceride hydrolysis using lipase has been proposed as a novel method to produce raw materials in food and cosmetic industries such as diacylglycerol, monoacylglycerol, glycerol and fatty acid. In order to design a reactor for utilizing this reaction on industrial scale, constructing a kinetic model is important. Since the substrates are oil and water, the hydrolysis takes place at oil-water interface. Furthermore, the triglyceride has three ester bonds, so that the hydrolysis stepwise proceeds. Thus, the reaction mechanism is very complicated. The difference between the interfacial and bulk concentrations of the enzyme, substrates and products, and the interfacial enzymatic reaction mechanism should be considered in the model.
Biomass Production Chlorella Vulgaris Buitenzorg Using Series of Bubble Column Photo Bioreactor with a Periodic Illumination Wijanarko, Anondho; Dianursanti, Dianursanti; Muryanto, Muryanto; Simanjuntak, Josia; Wulan, Praswasti; Hermansyah, Heri; Gozan, Misri; Soemantojo, Roekmijati
Makara Journal of Technology Vol 12, No 1 (2008)
Publisher : Directorate of Research and Community Services, Universitas Indonesia

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Abstract

Chlorella vulgaris Buitenzorg cultivation using three bubble column photo bioreactors arranged in series with a volume of 200 mL for 130 hours shows an increase of biomass production of Chlorella vulgaris Buitenzorg up to 1.20 times and a decrease of the ability of CO2 fixation compared to single reactor at a periodic sun illumination cycle. The operation conditions on cultivation are as following: T, 29.0oC; P,1 atm.; UG, 2.40 m/h; CO2, 10%; Benneck medium; and illumination source by Phillip Halogen Lamp 20W /12V/ 50Hz. Other research parameters such as microbial carbon dioxide transferred rate (qco2), CO2 transferred rate (CTR), energy consumption for cellular formation (Ex), and cultural bicarbonate species concentration [HCO3] also give better results on series of reactor.
Effect of Photoperiodicity on Co2 Fixation By Chlorella vulgaris Buitenzorg in Bubble Column Photobioreactor For Food Supplement Production Wijanarko, Anondho; Dianursanti, Dianursanti; Witarto, Arief; Soemantojo, Roekmijati
Makara Journal of Technology Vol 8, No 2 (2004)
Publisher : Directorate of Research and Community Services, Universitas Indonesia

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Abstract

To reduce the level of CO2 content in air, effort on converting CO2 to useful products is required. One of the alternatives includes CO2 fixation to produce biomass using Chlorella vulgaris Buitenzorg. Chlorella vulgaris Buitenzorg is applied for production of food supplement. Chlorella vulgaris Buitenzorg is also easy to handle due to its superior adaptation. Currently, Chlorella vulgaris Buitenzorg has been analyzed by some experts for its cellular composition, its ability to produce high quality biomass and the content of essential nutrition. A  series of experiments was conducted by culturing Chlorella vulgaris Buitenzorg using Beneck medium in bubbling column photobioreactor. The main variation in this experiment was photoperiodicity, where growth of Chlorella vulgaris Buitenzorg was examined during photoperiodicity condition. The difference between CO2 gas concentration of inlet and outlet of the reactor during operational period, was compared to the same experiment under continuous illumination. Under photoperiodicity of 8 and 9 h/d, the culture cell densities (N) were approximately 40 % higher than under continuous illumination. Final biomass density of Chlorella vulgaris Buitenzorg at 9 h/d illumination was 1.43 g/dm3, around 46% higher than under continuous illumination. Specific carbon dioxide transfer rate (qCO2) in photoperiodicity was 50-80% higher than under continuous illumination. These experiments showed that photoperiodicity affects the growth of Chlorella vulgaris Buitenzorg The specific  growth rate (μ) by photoperiodicity was higher than that by continuous ilumination while the growth period was two times longer. Based on the experiments, it can be concluded that photoperiodicity might save light energy  consumption. The prediction of kinetic model under continuous illumination as well as under photoperiodicity illumination showed that Haldane model became the fitted kinetic model.
Biogasoline Production from Palm Oil Via Catalytic Hydrocracking over Gamma-Alumina Catalyst Wijanarko, Anondho; Mawardi, Dadi; Nasikin, Mohammad
Makara Journal of Technology Vol 10, No 2 (2006)
Publisher : Directorate of Research and Community Services, Universitas Indonesia

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Abstract

Bio gasoline conversion from palm oil is an alternative energy resources method which can be substituted fossil fuel base energy utilization. Previous research resulted that palm oil can be converted into hydrocarbon by catalytic cracking reaction with γ-alumina catalyst. In this research, catalytic cracking reaction of palm oil by γ-alumina catalyst is done in  a stirrer batch reactor with the oil/catalyst weight ratio variation of 100:1, 75:1, and 50:1; at suhue variation of 260 to 340oC and reaction time variation of 1 to 2 hour. Post cracking reaction, bio gasoline yield could be obtained after 2 steps batch distillation. Physical property test result such as density and viscosity of this cracking reaction product and commercial gasoline tended a closed similarity. According to result of the cracking products density, viscosity and FTIR, it  can conclude that optimum yield of the palm oil catalytic cracking reaction could be occurred when oil/catalyst weight  ratio 100:1 at 340 oC in 1.5 hour and base on this bio gasolines FTIR, GC and GC-MS identification results, its  hydrocarbons content was resembled to the commercial  gasoline. This palm oil catalytic cracking reaction shown 11.8% (v/v) in yield and 28.0% (v/v) in conversion concern to feed palm oil base and produced a 61.0 octane numbers biogasoline.
PEMBUATAN BIODIESEL DARI DEDAK PADI DENGAN PROSES TRANSESTERIFIKASI MENGGUNAKAN KATALIS ZEOLIT ALAM BAYAH Hartono, Rudi; R, Meliana; Nurlaila, Nurlaila; Rusdi, Rusdi; Wijanarko, Anondho; Hermansyah, Heri
Prosiding Semnastek PROSIDING SEMNASTEK 2017
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Biodiesel, bahan bakar alternatif yang dapat diperoleh dari minyak tumbuhan dan lemak hewan.Biodiesel dapat diperbaharui, biodegradable, ramah lingkungan dan tidak beracun. Objek percobaan menggunakan dedak padi sebagai bahan baku, diperoleh dari proses ekstraksi menggunakan N-hexane. Metode yang digunakan untuk memproduksi biodiesel adalah transesterifikasi asam dan transesterifikasi basa menggunakan metanol dan katalis. Katalis yang digunakan dalam percobaan adalah katalis homogen  H2SO4 dan katalis heterogen zeolit alam yang diperoleh dari Bayah Banten. Preparasi biodiesel dilakukan dengan memvariasikan temperatur pada transesterifikasi basa 50°C, 60°C dan 70°C. Zeolit di preparasi dengan poses impregnasi padi variasi konsentrasi KOH/zeolit (25 gr KOH dalam 100 ml air destilasi, 37.5 gr KOH dalam 100 ml air destilasi dan 50 gr KOH dalam 100 ml air destilasi).  Waktu  reaksi 60 menit dengan konsentrasi katalis 2%. Spesifikasi biodiesel yang dihasilkan sesuai dengan Standar nasional Indonesia (SNI) dengan hasil terbaik pada variasi temperature 60°C
POTENSI ZEOLIT ALAM BAYAH BANTEN SEBAGAI KATALIS HETEROGEN PADA PEMBUATAN BIODIESEL SECARA TRANSESTERIFIKASI Hartono, Rudi; Wijanarko, Anondho; Hermansyah, Heri
Prosiding Semnastek PROSIDING SEMNASTEK 2018
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Zeolit alam bayah banten (ZABBrht) mengandung modernit dan klipnotilonit yang berpontensi untuk dibuat katalis heterogen. untuk penghasil bioiesel. Pertama Zeolit di hancurkan dengan menggunakan palu untuk mendapatkan ukuran (50 – 60) mesh, keringkan pada suhu 1100C selama 24 jam di dalam Oven. Impregnasi menggunakan KOH dalam 100 ml aquadest selama 2 jam pada suhu 600C, keringkan dalam oven kembali selama 24 jam pada suhu 1100C, pisahkan dengan menggunkan pompa vakum, kalsinasi pada suhu 4500c selama 3 jam. Katalis heterogen ini ramah lingkungan dan mudah dipisahkan dan dapat digunakan kembali. biodiesel yang dihasilkan pada suhu 600C selama 2 jam dengan perbandingan rasio methanol dan minyak jelantah 1:7. Hasil biodieselnya adalah : 87,8% (75 gram KOH/100mL). Hasil Biodiesel di analisa dengan GC Ester content dan katalis termodifikasi dikarakterisasi dengan menggunakan FTIR, SEM-EDX, XRD
PEMBUATAN BIODIESEL DARI MINYAK DEDAK PADI DENGAN PROSES KATALIS HOMOGEN SECARA ASAM DAN KATALIS HETEROGEN SECARA BASA Hartono, Rudi; Rusdi, Rusdi; Wijanarko, Anondho; Hermansyah, Heri
Prosiding Semnastek PROSIDING SEMNASTEK 2016
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Pembuatan biodiesel dari minyak dedak padi yang berasal tumbuhan yang dapat direnewable.  Biodiesel yang dihasilkan dari      dedak padi     diawali dengan memisahkan dedak halus dan dedak kasar  dengan   proses   screening.   Hasil   screening   berupa   dedak   kasar   dan   halus   yang   di   ekstraksi   dengan  menggunakan pelarut       diperoleh minyak dan pelarut , dan dengan proses distilasi didapatkan minyak  dedak padi. Minyak dedak padi yang dihasilkan dari proses ektraksi dengan pelarut di buat biodiesel  dengan   menggunakan   katalis   homogen   secara   asam   dengan   persen   katalis   2%  v      dari   bahan   baku,  Tahap     katalis  heterogen     secara   basa   dengan    persen    katalis  3   %  b   dari   bahan    baku.Tahap  transesterifikasi asam dan tranesterifikasi basa menggunakan variasi rasio minyak dedak padi terhadap  methanol (1:7)  Hasil  analisa   yang   didapat   adalah   %   yield,   nilai   viskositas   dan   densitas.  Perolehan   biodiesel   yang                                                                                                        0  optimum pada pembuatan biodiesel secara katalis homogen dan heterogen pada suhu 60  C dan waktu  operasi   2   jam   adalah   61,6%  yield,   27,4024   mm2/s   viskositas   dan   0,936   gram/mL   densitas  dengan perbandingan KOH/ZABBrht           100 gr/100mL.  Kata Kunci: Minyak Dedak Padi,           biodiesel, Transesterifikas, Katalis Homogen, Katalis Heterogen