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All Journal Jurnal Rekayasa Proses Reaktor Research Report - Engineering Science El-HARAKAH : Jurnal Budaya Islam CHEMICA Jurnal Teknik Kimia Seminar Nasional Teknik Kimia Kejuangan Journal of Engineering and Technological Sciences JURNAL INTEGRASI PROSES Prosiding Semnastek SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Rekayasa Hijau Jurnal Proaksi Journal of Appropriate Technology for Community Services Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Reswara: Jurnal Pengabdian Kepada Masyarakat Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jurnal Rekayasa Proses
Herry Santoso
Jurusan Teknik Kimia, Fakultas Teknologi Industri, Universitas Katolik Parahyangan
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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Desain dan Optimasi Distilasi Ekstraktif Tetrahidrofuran-Etanol Menggunakan Etilen Glikol sebagai Pelarut Nanette Litya; Juan Christoper; Herry Santoso; Yansen Hartanto
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

The Influence of Foaming Agent and Cake Thickness on the Drying Process Tomatoes Using a Tray Dryer Tri Hariyadi; Herry Santoso; Judy Retti Witono
Reaktor Volume 18 No. 3 September 2018
Publisher : Dept. of Chemical Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (946.907 KB) | DOI: 10.14710/reaktor.18.03.143-148

Abstract

Moisture content of tomato (Licopersicon esculentum Mill.) is very high, so easily damaged due to physical impact, enzyme and microbes activity. Further processing is necessary in order to improve shelf life, one way is drying method. This work studied the effect of foaming agent and cake thickness in tomato drying using tray dryer at various temperatures. Foaming agent is used to convert the material into foam, so that the drying temperature can be set relatively low to preserves color, aroma and nutrient composition of the material. The tray dryer is used, because it is simple and the operation cost is relatively cheap. In this work, tomatoes were sliced, crushed for 10 minutes using blender, separated from the seeds and residues with a 60 mesh sieve, and then mixed with dextrin and foaming agent Tween 80 each by 5% weight respectively. Each mixture was blended for 10 minutes. The tray dryer was filled with hot air at 2.0 m/sec with temperature variation of 40, 50, 60 and 70ºC and cake thickness variation of 2 and 4 mm. The results obtained, drying at 50° C is faster than 40º C, while 50 to 70º C is relatively the same. The thicker the cake, the slower the drying time. Performance of foaming agent Tween 80 compared to chemical foaming agent is a natural egg white powder. Drying with a foaming agent Tween 80 faster than egg white powder. Keywords: cake thickness; foaming agent; tomato; tray dryer
Design and Optimization of Isopropyl Alcohol-Water Separation using Heterogenous Azeotropic Distillation Emelia Kezia Lasut; Yansen Hartanto; Herry Santoso
CHEMICA: Jurnal Teknik Kimia Vol 8, No 2 (2021): December 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/chemica.v8i2.20849

Abstract

Heterogeneous azeotropic distillation is one technique of separating the mixtures that form azeotropes. In this research, a case study will be carried out on separating a mixture of isopropyl alcohol (IPA) and water where this mixture forms an azeotropic point. IPA is an alcohol that can be converted into diesel fuel through an esterification reaction. This study will use the Aspen Plus v8.8 simulator. The entrainer used were benzene and cyclohexane. The thermodynamic model used was NRTL. The configuration used in this study consists of two distillation columns with one decanter to separate the ternary azeotropic points. Optimization is carried out sequentially by changing one variable while the other variables are kept constant. The variables used are the number of stages, and the location of the feed entered in each column. The objective function used in this optimization is the Total Annual Cost (TAC). This research obtained a heterogeneous azeotropic distillation configuration that produced high-purity IPA and water products. Based on the optimization results, the benzene entrainer is cheaper than the cyclohexane entrainer.
Pemodelan dan Simulasi Secara Tunak dan Dinamik pada Pengeringan dengan Rotary Dryer Herry Santoso
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2015: Prosiding SNTKK 2015
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Rotary dryer is one of the dryers that has many uses in chemical, pharmacy, and food industries. The model which represents the actual condition of rotary dryer is needed to make the designing and scaling-up of this dryer easier. The objective of this study is to proposed mathematical model of drying process with rotary dryer in the form of distributed parameter system and then simulate this drying process in its steady state and dynamic condition. The variables that was observed in this model are moisture in the solid feed, moisture in the drying air, temperature of the solid feed, and temperature of the drying air. This non-linear partial differential equations was modified to non-linear ordinary differential equations using finite difference method and then solved using numeric integration technique. The steady state simulation shows that changes in inlet variables have influence to the observed variables on the outlet of rotary dryer with the greatest effect is from the temperature of drying air and the lowest effect is from the temperature of solid feed. Furthermore, the dynamic parameters obatained from dynamic simulation can be used for controlling purpose.
Pretreatment Bonggol Jagung dengan Alkali Peroksida dan Hidrolisis Enzim H. Maria Inggrid; Reinaldo Wong; Herry Santoso
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2016: Prosiding SNTKK 2016
Publisher : Seminar Nasional Teknik Kimia Kejuangan

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Abstract

Corncobs are abundant lignocellulosic waste materials in Indonesia. Lignocellulosic biomass has the potential to be used as raw material to produce biofuel. Lignocellulosic material mainly consists of cellulose, hemicellulose and lignin. The convertion of lignocellulosic material to fermentable sugar involves pretreatment and  hydrolysis ( enzimatic saccharification ). The objective of this experiment is to optimize the operating condition of alkaline hydrogen peroxide pretreatment and enzimatic hydrolysis treatment to release fermentable sugar from corncob. In this experiment the effect of temperature and concentration of hydrogen peroxide ( H2O2) to lignin disruption by alkaline peroxide (AHP) pretreatment at pH 11.5 were studied. Under the optimum condition of alkaline hydrogen peroxide pretreatment ( 2% H2O2,  temperature of 35 oC,  pH 11.5, 12h )  and enzimatic hydrolysis treatment using cellusoft L. at 50 oC, pH 5, 12h, a total of 514.3 ppm glucose was obtained.
PEMODELAN DAN SIMULASI REAKSI DEGRADASI PARASETAMOL DENGAN KATALIS TiO2 I Gede Pandega Wiratama; Hendra Ronaldi; Herry Santoso
JURNAL INTEGRASI PROSES VOLUME 6 NOMOR 3 JUNI 2017
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1245.372 KB) | DOI: 10.36055/jip.v6i3.1328

Abstract

The objective of this experiment is to determine the model and the optimum condition of the photocatalytic degradation of paracetamol. Based on the mechanism of the process, the suggested kinetics models are pseudo homogenous model, First Unimolecular Catalytic Reaction model, and Second Unimolecular Catalytic Reaction model.The first step of this research is determining the model then estimating the parameters of the model. k and n for the pseudo homogenous model;  ksr, kads, kdes, KA, KP, KR,and KS for the First Unimolecular Catalytic Reaction and Second Unimolecular Catalytic Reaction model. The validation and simulation of the parameters are based on the results of experiments conducted in the study (Desale et al., 2013). Validation of the models are carried out under the variations of catalyst loading and pH. This research shows that Surface reaction of First Unimolecular Catalytic Reaction’s model fitted the best from the data and there is no pattern on the error. The simulation gives the optimum conditions at catalyst loading 1 g/L and pH 9. In this optimum conditions, the simulation of paracetamol degradation can reach 99.961% on the conversion.
REACTIVE DIVIDING WALL COLUMN (RDWC) PADA PRODUKSI DIETIL KARBONAT Devina Affriani Reyga Riswandi; Michelle Tanujaya; Yansen Hartanto; Herry Santoso
JURNAL INTEGRASI PROSES VOLUME 8 NOMOR 1 JUNI 2019
Publisher : JURNAL INTEGRASI PROSES

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jip.v8i1.5494

Abstract

In this era, the needs for chemicals are increasing. One of them is an additive called diethyl carbonate that is produced by the transesterification reaction of dimethyl carbonate and ethanol. To produce diethyl carbonate by conventional distillation with high purity is expensive and requires a lot of energy, so that new breakthroughs and innovations are needed to overcome this problem. The new breakthrough and innovation proposed in this study is Reactive Dividing Wall Column (RDWC). The purpose of this study is to design an RDWC model and optimize the Reactive Dividing Wall Column. In this study, Aspen Plus software was used. The operating unit model used was RadFrac. The thermodynamic model used was the UNIQUAC model. Then using the literature on reactive distillation, the data were validated. After it was valid, the data will be used to design and optimize RDWC. Variables for optimization are: number of reactive trays, number of trays with a wall, total tray number, and DMC feed location. The results showed that RDWC  for the production of diethyl carbonate produced a lower value of TAC than conventional methods. The TAC value obtained was $1,310,706,938 / year. The Reactive Dividing Wall Column design for optimum diethyl carbonate production has a total number of 24 reactive stages, a total number of 26 wall stages, 77 total stages and dimethyl carbonate feed locations on the 71st stage.
PENGARUH KONDISI OPERASI DAN FOAMING AGENT TERHADAP KUALITAS SERBUK TOMAT PADA PENGERINGAN MENGGUNAKAN TRAY DRYER Tri Hariyadi; Judy Retti Witono; Herry Santoso
Prosiding Semnastek PROSIDING SEMNASTEK 2017
Publisher : Universitas Muhammadiyah Jakarta

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Abstract

Kandungan air dalam bahan pangan merupakan faktor yang paling dominan sebagai penyebab kerusakan bahan pangan setelah panen. Tomat (Lycopersicon esculentum Mill.) memiliki kandungan air yang tinggi, sehingga setelah panen mudah rusak karena pengaruh kegiatan biologis secara biokimia dan kimiawi yang masih tetap berlangsung. Pengeringan adalah salah satu cara pengolahan lanjutan untuk mengeluarkan sebagian besar air yang terkandung dalam bahan pangan dengan menggunakan energi panas. Pengeringan dengan alat pengering buatan tipe tray dryer karena prosesnya sederhana dan biaya operasi relatif murah.Penelitian ini mempelajari pengaruh pengeringan menggunakan tray dryer terhadap kualitas serbuk tomat, yang meliputi kadar air, kadar vitamin C dan aktivitas antioksidan. Di dalam penelitian ini, tomat yang biji dan ampasnya telah dipisahkan dengan ayakan berukuran 60 mesh, dicampurkan dextrin dan foaming agent Tween 80  masing-masing sebanyak 5% berat. Campuran kemudian diblender selama 10 menit. Tray dryer dialiri udara panas pada variasi  temperatur 40, 50, 60 atau 70 oC dengan laju 2,0 m/detik. Pasta tomat dikeringkan dengan ketebalan 2 mm atau 4 mm. Berat sampel diukur setiap 5 menit. Sebagai pembanding, dilakukan penelitian menggunakan foaming agent egg white 5% berat.Hasil yang diperoleh, temperatur pengeringan optimal pada 50 ºC dengan kadar air produk sebesar 7,21% basis kering. Semakin tebal ukuran padatan, pengeringan semakin lambat dan kadar air lebih tinggi. Pengeringan menghilangkan kandungan Vitamin C sebesar 87,55 %. Semakin tinggi temperatur pengeringan, aktivitas antioksidan semakin kecil. Kualitas serbuk tomat menggunakan foaming agent Tween 80 lebih baik dibandingkan dengan egg white powder.Kata kunci : pengeringan, tray dryer, tomat, vitamin C, antioksidan
Studi Awal Pertumbuhan dan Induksi Mikroalga Haematococcus Pluvialis Judy Retti B. Witono; Y.I.P. Arry Miryanti; Herry Santoso; Angela Justina Kumalaputri; Valine Novianty; Alvin Gunadi
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 2, No 3 (2018)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v2i3.2516

Abstract

ABSTRAKMunculnya makanan cepat saji dan polusi udara mendatangkan kerusakan tubuh akibat radikal bebas. Untuk melawan radikal bebas, antioksidan menjadi semakin populer di berbagai kalangan dan salah satunya astaxanthin. Haematococcus pluvialis merupakan sumber astaxanthin alami tertinggi. Tujuan penelitian ini untuk mempelajari pertumbuhan H. Pluvialis. Sebagai variabel dalam penelitian ini adalah (1) konsentrasi inoculum awal yang berbeda (yaitu 10%-v/v dan 20%-v/v) terhadap kepadatan dan jumlah sel; (2) penambahan garam NaCl dan induksi cahaya terhadap rasio karotenoid dan klorofil. Mikroalga H. pluvialis secara fotoautotrof selama sembilan hari. Karotenogenesis diinduksi oleh penambahan NaCl 0,8%-b/v, diikuti oleh induksi di bawah intensitas cahaya tinggi. Kadar klorofil dan total karotenoid dianalisis dengan menggunakan spektrofotometer. Hasil penelitian menunjukkan bahwa pertumbuhan H. pluvialis lebih baik dikulturkan dengan konsentrasi inokulum 10% dan diperoleh jumlah 70 x 105 sel/mL. Penambahan garam NaCl 0,8%-b/v disertai induksi intensitas cahaya tinggi dapat meningkatkan rasio kadar karotenoid terhadap klorofil sebesar 28,9%.Kata kunci:,Haematococcus pluvialis, induksi cahaya, karotenoid, klorofil, mikroalga.ABSTRACTFast food and air pollution lead to the production of free radicals in our body. To fight those, it is needed anti-oxidant. That is the reason why antioxidant become a popular supplement for many people and one of them is astaxanthin. Haematococcus pluvialis is the highest source of natural astaxanthin. The goal of this study is to observe the cell growth of H. pluvialis. The variables used in this research are (1) a different initial inoculum concentrations (i.e. 10%-v/v and 20%-v/v) to the density and number of cells; (2) the addition of salt NaCl and light induction to the ratio of carotenoids to chlorophyll. Microalgae H. pluvialis was cultured in batch mode and photoautotrophic cultivation for nine days. The carotenogenesis was induced by addition of NaCl 0.8%-b/v, followed by induction under high-light intensity. Chlorophyll levels and total carotenoids were analyzed using a spectrophotometer. It was observed that growth of H. pluvialis was preferable cultured with 10% inoculum concentration and obtained 70 x 105 cells/mL. The addition of NaCl 0.8%-b/v salt followed by high light intensity induction could increase the ratio of carotenoids to chlorophyll levels by 28.9%.Keywords: carotenoid, chlorophyll, Haematococcus pluvialis, light induction, microalgae.
Brine Evaporation Modeling in WAIV System Using Penman, Priestley-Taylor, and Harbeck Models Herry Santoso; Dwiki Eka Putra; Giovanni Angelina; Yansen Hartanto; Judy Retti Bhawaningrum Witono; Kevin Cleary Wanta
Journal of Engineering and Technological Sciences Vol. 54 No. 6 (2022)
Publisher : Directorate for Research and Community Services, Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.eng.technol.sci.2022.54.6.9

Abstract

Indonesia is a maritime country with a vast ocean area. Indonesia has high potential to produce salt because it has a lot of saltwater resources. When sea salt is harvested, seawater evaporates from a concentration of 3.5°Be to 29°Be. Evaporation can be affected by several factors, such as air temperature, wind speed, water vapor pressure, humidity, radiation, geographical location, time interval, and season. Many modifications have been made to increase the evaporation rate in salt production. One of them is the WAIV (Wind-Aided Intensified eVaporation) method. WAIV evaporation systems utilize sunlight and wind to accelerate the evaporation rate. The modeling in this study was adjusted to the environmental conditions in the case study for which it was necessary to determine new parameter values for the existing models. The Penman, Priestley-Taylor, and Harbeck models were used. The Harbeck model has been studied in previous studies, which were used as a reference in the present study. This study first determined and then validated the parameter values obtained. A simulation of the evaporation rate was conducted in a different place, namely Kupang, East Nusa Tenggara, Indonesia using Meteorology, Climatology, and Geophysical Agency (Indonesian: Badan Meteorologi, Klimatologi, dan Geofisika / BMKG) data.
Co-Authors Abraham Zefanya Agus Subaqin Alvin Gunadi Angela Justina Kumalaputri Antariksa Sudikno Aris Setyadi Arry Miryanti Daniel Setiadi Lokasurya Devina Affriani Reyga Riswandi Dwiki Eka Putra Emelia Kezia Lasut Fynn, Vincentius Felix Giovanni Angelina Giovanno Macario Purnomo Gunadi, Alvin Hendra Ronaldi I Gede Pandega Wiratama Indarto, Antonius Ivan Kristianto Juan Christoper Juan Christoper Judy Retti Witono Judy Retti Witono Julianto, Shelvia Kevin Cleary Wanta Lisa Dwi Wulandari Maria Inggrid H. Michelle Tanujaya Nanette Litya Nanette Litya Novianty, Valine Owen, Keane Raissa, Zabrina Reinaldo Wong Tangka, Adithya Margif Reinhard Theresia May Anggraini Tjuaja, Rudy Tri Hariyadi Valentino, Steven Valine Novianty Vincent Y.I.P. Arry Miryanti Yansen Hartanto Yeremias Juma Yunita Yunus