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All Journal Indonesian Journal of Electronics and Instrumentation Systems IPTEK Journal of Proceedings Series Jurnal Bahan Alam Terbarukan Journal of Engineering and Technological Sciences Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Indonesian Journal of Chemistry SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Chemurgy Martabe : Jurnal Pengabdian Kepada Masyarakat Distilat: Jurnal Teknologi Separasi Jurnal Pengabdian Masyarakat Asia Jurnal Pengabdian Polinema Kepada Masyarakat AJAD : Jurnal Pengabdian kepada Masyarakat Jurnal Teknik Kimia dan Lingkungan Jurnal Pengabdian Kepada Masyarakat
Asalil Mustain
Politeknik Negeri Malang
Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering 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 Medicine & Pharmacology Nursing Public Health Social Sciences Other

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CO2 Frost Phenomenon for Binary System of Methane-Carbon Dioxide Mixtures Wibawa, Gede; Mustain, Asalil; Sumarno, Sumarno; Gunawan, Setiyo
Journal of Engineering and Technological Sciences Vol 47, No 6 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (344.868 KB) | DOI: 10.5614/j.eng.technol.sci.2015.47.6.2

Abstract

In the present study, the CO2 frost phenomenon of CH4-CO2 mixtures has been observed for the rational design of CO2 removal from natural gas using a controlled freeze out area. The CO2 frost conditions were estimated using the ZNE method and process simulation software (Aspen HYSYS® v7.3). The experiment was carried out using a double pipe heat exchanger (DPHE) with the concentration of CO2 in the gas mixture at 5 and 10% and pressure of the gas mixture from 1 to 20 bar. The equilibrium temperature predictions of the ZNE method and the process simulation software only had a slight difference, with a magnitude deviation of less than 1% for pressures below 20 bar and 3% for pressures in the range of 20-30 bar, respectively. In the experimental study, CO2 frost formation was detected at pressures of 1, 5, 10 and 20 bar. The locations of the initial CO2 frost formation were determined using a pressure drop indicator associated with the predicted frost temperatures obtained from the ZNE method and the process simulation software. For all studied variables, the locations of initial CO2 frost formation were found at 0.887-1.531 m from the inlet.
PARAMETER INTERAKSI BINER KESETIMBANGAN UAP-CAIR CAMPURAN ALKOHOL UNTUK OPTIMASI PROSES PEMURNIAN BIOETANOL Mustain, Asalil; Takwanto, Anang; Hartanto, Dhoni
Jurnal Bahan Alam Terbarukan Vol 5, No 2 (2016): December 2016 [Nationally Accredited]
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.5126

Abstract

In this work, the binary interaction parameters of vapor-liquid equilibrium for the mixtures of primary alcohols (methanol, ethanol, 1-propanol or 1-butanol) with C5 alcohols were obtained. A total of 15 systems that consisted of isobaric vapor-liquid equilibrium data at atmospheric pressure were selected. The binary interaction parameters were determined as temperature function by correlating the selected vapor-liquid equilibrium data using the Wilson, Non-Random Two-Liquid (NRTL) and Universal Quasi-Chemical (UNIQUAC) activity coeffi­cient models. The binary interaction parameters were described as the temperature-dependent to increase the capability of the parameters for the application in wide range of temperature. The correlation showed good results because the root mean square devia­tion (RMSD) between the calculation values and experimental data were relatively low. The obtained parameters were very useful for optimizing the distillation column in the bio-ethanol purification process.
PARAMETER INTERAKSI BINER KESETIMBANGAN UAP-CAIR CAMPURAN ALKOHOL UNTUK OPTIMASI PROSES PEMURNIAN BIOETANOL Mustain, Asalil; Takwanto, Anang; Hartanto, Dhoni
Jurnal Bahan Alam Terbarukan Vol 5, No 2 (2016): December 2016 [Nationally Accredited]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v4i2.5126

Abstract

In this work, the binary interaction parameters of vapor-liquid equilibrium for the mixtures of primary alcohols (methanol, ethanol, 1-propanol or 1-butanol) with C5 alcohols were obtained. A total of 15 systems that consisted of isobaric vapor-liquid equilibrium data at atmospheric pressure were selected. The binary interaction parameters were determined as temperature function by correlating the selected vapor-liquid equilibrium data using the Wilson, Non-Random Two-Liquid (NRTL) and Universal Quasi-Chemical (UNIQUAC) activity coeffi­cient models. The binary interaction parameters were described as the temperature-dependent to increase the capability of the parameters for the application in wide range of temperature. The correlation showed good results because the root mean square devia­tion (RMSD) between the calculation values and experimental data were relatively low. The obtained parameters were very useful for optimizing the distillation column in the bio-ethanol purification process.
Isopropyl Alcohol Purification through Extractive Distillation using Glycerol as an Entrainer: Technical Performances Simulation and Design Hartanto, Dhoni; Handayani, Prima Astuti; Sutrisno, Akhmad; Anugrahani, Viona Widya; Mustain, Asalil; Khoiroh, Ianatul
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.v8i2.23477

Abstract

Isopropyl alcohol is widely used as industrial chemical intermediates and common solvents in households, pharmaceuticals, food, cosmetics, and medical purposes. The high purity of isopropyl alcohol requires special separation from its impurity i.e. water due to isopropyl alcohol and water form an azeotropic point, which is difficult to separate using a conventional distillation method. The azeotropic point of this mixture is at isopropyl alcohol mole fraction of 0.68 and temperature of 353.4 K. One of the optimum methods to separate an azeotrope point is through the extractive distillation which use a third component as a solvent. Glycerol is one of the solvents which can be used as a potential entrainer in the extractive distillation. Glycerol is produced in the biodiesel production as a by-product. Moreover, glycerol is an eco-friendly chemical. In this work, the simulation of the extractive distillation of isopropyl alcohol/water system with glycerol as an entrainer was simulated using Aspen Plus. The Non-Random Two-Liquid (NRTL) model was used as thermodynamic model in the simulation.  The effect of stage number, binary feed stage, entrainer feed stage, and reflux ratio to the purity of isopropyl alcohol, and reboiler-condenser duties were examined to achieve the optimum design for the extractive distillation column with less energy requirements. The simulation results showed that the optimum configurations in the extractive distillation column design are at 25 theoretical stages, binary feed stage (BFS) of 20, entrainer feed stage (EFS) of 2, and reflux ratio (RR) of 0.5 to produce isopropyl alcohol with the purity of 99.27%. The design and sizing of the extractive distillation column were also proposed in this work.
Prediction of Ternary Vapor-Liquid Equilibria for Alcohols + Glycerol + Water Systems to Enhance the Quality of Glycerol as Biodiesel Side Product D. Setiawati, Eviana; Mustain, Asalil; Wibawa, Gede
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23546026.y2015i1.1172

Abstract

Fossil fuels as the primary energy resources around the world cause significant negative effect on atmosphere. Recently, biodiesel, which primarily produced from renewable resources, has received great attention because of its environmental benefits. Higher chain of alcohols, such as butanol, may be used as solvent to produce biodiesel with glycerol as byproduct. In order to enhance the quality of glycerol as biodiesel side product which meets food and pharmaceutical standards, vapor-liquid equilibria (VLE) data for ternary systems consisting of 1-butanol, 2-methyl-1-propanol, glycerol and water are required to design and optimize the separation process of glycerol. In this work, the prediction of ternary VLE for (1-butanol / 2-methyl-1-propanol + glycerol + water) using UNIFAC model were determined at various temperatures and compositions and compared with the experimental data giving Average Absolute Deviations (AAD) less than 5.7%. The results indicated that UNIFAC was a reliable model for phase equilibria predictions in the mixtures containing of glycerol
CO2 Frost Phenomenon for Binary System of Methane-Carbon Dioxide Mixtures Gede Wibawa; Asalil Mustain; Sumarno Sumarno; Setiyo Gunawan
Journal of Engineering and Technological Sciences Vol. 47 No. 6 (2015)
Publisher : Institute 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.2015.47.6.2

Abstract

In the present study, the CO2 frost phenomenon of CH4-CO2 mixtures has been observed for the rational design of CO2 removal from natural gas using a controlled freeze out area. The CO2 frost conditions were estimated using the ZNE method and process simulation software (Aspen HYSYS® v7.3). The experiment was carried out using a double pipe heat exchanger (DPHE) with the concentration of CO2 in the gas mixture at 5 and 10% and pressure of the gas mixture from 1 to 20 bar. The equilibrium temperature predictions of the ZNE method and the process simulation software only had a slight difference, with a magnitude deviation of less than 1% for pressures below 20 bar and 3% for pressures in the range of 20-30 bar, respectively. In the experimental study, CO2 frost formation was detected at pressures of 1, 5, 10 and 20 bar. The locations of the initial CO2 frost formation were determined using a pressure drop indicator associated with the predicted frost temperatures obtained from the ZNE method and the process simulation software. For all studied variables, the locations of initial CO2 frost formation were found at 0.887-1.531 m from the inlet.
STUDI PEMILIHAN REAKTAN PADA PABRIK METIL ESTER SULFONAT (MES) DARI FATTY ACID METHYL ESTER (FAME) Anasthasia Putri; Asalil Mustain
Jurnal Chemurgy Vol 4, No 1 (2020): Jurnal Chemurgy-Juni 2020
Publisher : Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/cmg.v4i1.4075

Abstract

Perkembangan teknologi di Indonesia mengalami peningkatan yang signifikan seiring dengan berjalannya waktu, baik dalam hal kualitas maupun kuantitas. Perkembangan ini juga dialami oleh industri oleochemical. Seiring dengan bertambahnya penduduk, kebutuhan produk industri oleochemical terus meningkat. Salah satu produk yang dibutuhkan yaitu surfaktan yang banyak digunakan pada industri detergent, dimana salah satu jenis surfaktan anionik yaitu Metil Ester Sulfonat (MES). Proses pembuatan MES melalui beberapa tahap proses, meliputi proses sulfonasi, proses bleaching, proses netralisasi, dan proses pengeringan. Proses pembuatan MES dibedakan pada jenis reaktan yang digunakan pada proses sulfonasi. Pada proses sulfonasi, reaktan yang digunakan beupa oleum-H2SO4 atau SO3 direaksikan dengan Fatty acid methyl ester (FAME). Reaktan SO3 lebih banyak digunakan karena mempunyai beberapa kelebihan, diantaranya dapat menghasilkan produk dengan yield tinggi serta bernilai ekonomis. Maka dari itu perlu dilakukannya pemilihan proses dalam pembuatan Metil Ester Sulfonat (MES). Pendirian pabrik Metil Ester Sulfonat (MES) dari Fatty Acid Methyl Ester (FAME) dipilih proses sulfonasi menggunakan reaktan SO3. Hal ini dikarenakan mempertimbangkan aspek teknis, operasi, dan ekonomis. Kata kunci: surfaktan anionik, methyl ester sulfonat, SO3
EVALUASI EFISIENSI HEAT EXCHANGER (HE - 4000) DENGAN METODE KERN Muhammad Rais Zain; Asalil Mustain
DISTILAT: JURNAL TEKNOLOGI SEPARASI Vol 6, No 2 (2020): Agustus 2020
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v6i2.133

Abstract

Proses perpindahan panas merupakan salah satu bentuk transfer energi yang mempunyai peranan penting dalam suatu proses produksi atau operasi seperti halnya industri perminyakan. Salah satu tipe alat penukar panas yang sering dipakai adalah shell and tube heat exchanger. Pada Central Processing Area (CPA) di PT Pertamina Tuban, heat exchanger (HE – 4000) digunakan untuk memanaskan atau meningkatkan suhu minyak yang akan menuju ke FSO (Floating Storage Offloading). Hal ini dilakukan karena minyak yang terproduksi berjenis Parafinix (Wax) yang dapat membeku pada suhu 80°F. Akan tetapi, kinerja heat exchanger di CPA saat ini mengalami penurunan yang disebabkan oleh terbentuknya kerak. Hal tersebut menyebabkan koefisien perpindahan panas (Ud) menurun dan mencapai jenuh. Berdasarkan hasil evaluasi dari perhitungan menggunakan metode Kern, nilai fouling factor (Rd) secara aktual didapat sebesar 0,069018  yang dimana melebihi nilai Rd yang ditetapkan yaitu sebesar 0,002  . Oleh karena itu, pembersihan perlu dilakukan secara berkala untuk menjaga kinerja heat exchanger agar tetap beroperasi dengan baik.
STUDI PENGARUH PRESSURE DROP TERHADAP EFISIENSI HEAT RECOVERY STEAM GENERATOR#1.2 BERBASIS SIMULASI CHEMCAD Inayatul Maula; Asalil Mustain; Ade Sonya Suryandari; Akhmad Hariadi
DISTILAT: JURNAL TEKNOLOGI SEPARASI Vol 7, No 1 (2021): Februari 2021
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v7i1.184

Abstract

PLTGU (Pembangkit Listrik Tenaga Gas Uap) adalah instalasi pembangkit listrik yang menggunakan tenaga gas dan uap untuk menghasilkan listrik. Bahan bakar yang digunakan pada PLTG berupa gas alam yang dibakar pada ruang bakar dengan udara dari atmosfer yang telah dikompres. Hasil dari pembakaran gas alam menghasilkan gas yang memiliki tekanan dan temperatur tinggi yang akan memutar turbin gas. Gas buang dari Gas Turbine (GT) masih memiliki tekanan dan temperature yang tinggi sehingga dimanfaatkan kembali sebagai media pemanas dari Heat Recovery Steam Generator (HRSG). Fungsi HRSG adalah untuk memanaskan air menjadi steam yang memiliki tekanan dan temperatur tinggi. Steam hasil dari HRSG akan memutar sudu-sudu turbin yang nantinya akan menghasilkan listrik. Adanya peranan penting HRSG, maka perlu dilakukan perhitungan efisiensi panas HRSG blok 1.2. Tujuan penelitian adalah mempelajari pengaruh variasi pressure drop terhadap efisiensi HRSG. Jumlah energi yang dibutuhkan untuk mengubah air menjadi uap dan juga energi yang disuplai dari gas buang turbin dapat diketahui dengan simulasi software ChemCAD. Jumlah energi yang hilang juga dapat diketahui dengan simulasi software ChemCAD 7.1.2. Hasil simulasi software ChemCAD dengan melakukan case study yang memvariasikan pressure drop pada alat LNG Exchanger didapatkan efisiensi panas HRSG 1.2 sebesar 51,296% dan heat losses sebesar 176852833,33 kJ/jam.
PREDIKSI KESETIMBANGAN UAP-CAIR SISTEM BINER TERSIER BUTANOL + ISOAMIL ALKOHOL MENGGUNAKAN HUKUM RAOULT Fannania S. Erdiyanti; Asalil Mustain
DISTILAT: JURNAL TEKNOLOGI SEPARASI Vol 5, No 2 (2019): Agustus 2019
Publisher : Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/distilat.v5i2.24

Abstract

Prediksi Kesetimbangan Uap-Cair bertujuan untuk mengetahui kesetimbangan uap-cair sistem biner TersierButanol + Isoamil Alkohol pada tekanan 101,3 kPa dan mengkorelasikan sistem biner tersebut dengan model Universal Quasi-Chemical (UNIQUAC). Prediksi diawali dengan menentukan fraksi mol campuran biner tersier butanol + isoamil alkohol dengan menggunakan persamaan Hukum Raoult pada tekanan 101,3 kPa, dimana tekanan uap total campuran cairan biner tergantung pada tekanan uap komponen murni dan fraksi molnya dalam campuran. Kemudian, data kesetimbangan yang didapat dikorelasikan dengan perhitungan model Universal Quasi-Chemical (UNIQUAC). Hasil prediksi dan korelasi menunjukkan hasil yang baik dikarenakan root mean square deviation (RMSD) dari hasil prediksi dan korelasi UNIQUAC diperoleh hasil yang relatif kecil. Parameter interaksi biner yang diperoleh dari hasil korelasi sangat berguna untuk optimasi kolom distilasi dalam proses pemurnian bioetanol.
Co-Authors Ade Sonya Suryandari Ade Sonya Suryandari Ade Sonya Suryandari Ade Sonya Suryandari Adinda Sindi Estelita Adinda Sindi Estelita Afrizal, Daffa Agung Ari Wibowo Agung Ari Wibowo Agung Ari Wibowo Agung Ari Wibowo Akbar, Fillah Akhmad Hariadi Aldyn Firstiano Afnan Alya Tri Kurnia Alya Tri Kurnia Anang Arianto Anang Takwanto Anasthasia Putri Andika Soharmat Aprijaya Andika Soharmat Aprijaya Annas Wiguno Anugrah Windy Mustikarini Anugrah Windy Mustikarini Anugrahani, Viona Widya Ardiansyah, Zainur Risky Arfiansyah, Ilham Arief Rahmatulloh Auliyah Choirunnisa Auliyah Choirunnisa Bagos Tedy Arta Bernardete Ferdinata Dandel Bintang, Zahril D. Setiawati, Eviana Dana Wahyu Pratama Dana Wahyu Pratama Delfian Lutfiananda Desi Nurisnaeni Saputri Desi Nurisnaeni Saputri Desta E.D. Prasetya Dewajani, Heny Dhoni Hartanto Dini Fitria Marta Fadila Divia Amalia Divia Amalia Ernia Novika Dewi Ernia Novika Dewi Erry Nabil Erry Nabil Fannania S. Erdiyanti Fannania S. Erdiyanti Gede Wibawa Gede Wibawa Gede Wibawa Gede Wibawa Hadi Priya Sudarminto Hardjono Hardjono Hardjono Hardjono Hardjono Hardjono Hardjono Hardjono Haryo Permono Haura Rahmayanti Haura Rahmayanti Heny Dewajani Herdiana Inayatul Maula Inayatul Maula Inayatul Maula Inayatul Maula INDRA LUKMANA PUTRA Khalimatus Sa'diyah Khalimatus Sa'diyah Khalimatus Sa’diyah Khalimatus Sa’diyah Khoiroh, Ianatul Lintang Alivia Anggerta Listiyana Candra Dewi M. Agung Indra Iswara May Kurnia Pratiwi Miftakhul Falah Mochammad Agung Indra Iswara Mochammad Agung Indra Iswara Mochammad Agung Indra Iswara Mochammad Junus Mufid Mufid Mufid Mufid Mufid Mufid Mufid Mufid Mufid Mufid Muhammad Aidil Rizky Muhammad Rais Zain Muhammad Rais Zain Mukhammad Furoiddun Nais Nadia Rahmatillah Nadia Rahmatillah Nanik hendrawati, Nanik Nasya Pingki Febriani Niamatur Rofiah Niamatur Rofiah Nur Lailatur Rohmah Nur Lailatur Rohmah Prayitno Prayitno Prayitno Prayitno Prayitno Prayitno Prima Astuti Handayani Profiyanti Hermien Suharti Putri, Vemmy Nurmala Andhani Risky Dimas Alfian Risky Dimas Alfian Rizky, M Aldo Rizqy Romadhona Ginting Rizqy Romadhona Ginting Rofiq Hamzah Rofiq Hamzah Rucita Ramadhana Rulianah, Sri Salsabila Salsabila Setiyo Gunawan Shabrina Adani Putri Sigit Hadiantoro, Sigit Sindhuwati, Christyfani Sri Rulianah Suhartono Wahyu Sumarno . Sumarno Sumarno Suryandari, Ade Sonya Susan Tiarawati Sutrisno, Akhmad Takwanto, Anang Vira Cintya Ramadhani Virsa Faliolla Tasyakuranti Wahyu Fazar Eka Irwansyah Yanty Maryanty Yasinta Octaliya Rosly Yasinta Octaliya Rosly