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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Engineering and Technological Sciences Konversi Jurnal Teknik JURNAL REKAYASA KIMIA & LINGKUNGAN
Hari Rionaldo
Department of Chemical Engineering, University of Riau, Jl. HR Subantas KM 12,5, Kampus Bina Widya, Simpang Baru,Pekanbaru, Riau 28293
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Simulation of dimethyl ether production as LPG substitute using LNG from Arun terminal with tri-reforming and direct synthesis method Rahmatullah, Faiprianda Assyari; Pamungkas, Tegar; Mutia, Sarah; Zulfansyah, Zulfansyah; Rionaldo, Hari
Konversi Vol 13, No 1 (2024): April 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v13i1.17946

Abstract

Increased demand for LNG compels Indonesia to import to meet these needs. Substituting LNG with alternative fuel emerges as a strategy to reduce LPG imports. One such alternative can be used for LPG substitution is Dimethyl Ether. Dimethyl ether is a colorless compound possesses a heating value of 30,5 MJ/kg and an energy equivalency with LPG ranging between 1,56 – 1,76. Dimethyl ether can be directly synthesized from synthetic gas produced through natural gas reforming. Production of synthetic gas from natural gas employs the tri-reforming method which integrating steam reforming, dry reforming, and partial oxidation methods in a single reactor offering optimal energy utilization advantages and minimal environmental impact. Dimethyl ether production from synthetic gas is using direct synthesis method, combining methanol synthesis and dehydration in a single reactor providing high conversion advantages compared to indirect synthesis method. Simulation was carried out using process simulator program ASPEN Plus V11. Based on the simulation results, dimethyl ether yield and selectivity is 99.62%.
Pengaruh Kondisi Proses Terhadap Yield dan Kadar Lignin Pulp dari Pelepah Sawit dengan Proses Asam Formiat Zulfansyah, Zulfansyah; Fermi, Muhammad Iwan; Amraini, Said Zul; Rionaldo, Hari; Utami, Meilany Sri
Jurnal Rekayasa Kimia & Lingkungan Vol 9, No 1 (2012): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Formic acid pulping of oil palm frond was conducted to study the influence of process variables (formic acid concentration, hydrogen peroxide concentration, and pulping time) on the properties of pulp produced (yield pulp and lignin content). A second order polynomial model consisiting of three independent process variables was found to accurately describe the formic acid pulping of oil palm frond. The propose equations reproduce the experimental results for the dependent variables with erros less than 5% for both yield dan lignin content. The most influential factor on yield pulp was formic acid concentration. Whereas, the cooking time has greater influence on lignin content.Keywords: formic acid, lingocelulose, pulping, pulp organosolv, oil palm fronds
Perancangan dan Pembuatan Program Simulasi Kesetimbangan Termodinamika untuk Proses Gasifikasi Biomassa Rionaldo, Hari; Zulfansyah; Mazlani
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 20 No 1 (2021): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jt.vol20no1.416

Abstract

The non-stoichiometric thermodynamic equilibrium simulation program for the biomass gasification process was developed using the Python programming language. It is featured with a GUI (Graphical Users Interface), to facilitate user interaction. The program is designed to calculate the composition of gas producer with 6 components involved, they are CH4, CO, CO2, H2, N2, and H2O. The design of computational algorithms for calculating non-stoichiometric thermochemical equilibrium models is converted into Python code. The GUI consists of input and output facilities in form of tables and graphs of calculation results. The input facility is designed in such a way that the user can vary the gasification temperature and the equivalent ratio. The calculation results of the simulation program are verified with the calculated data manually to ensure that there are no errors in the algorithm or writing program code. It is also compared with the experimental data from previous studies to see the accuracy of the thermodynamic model in predicting the composition of gas producer. The non-stoichiometric thermodynamic equilibrium simulation program for the biomass gasification process can predict the composition of producer gas with a fairly good level of accuracy and can be used as a learning medium in studying thermodynamic equilibrium.
Perancangan Sistem Pengukuran, Pengendalian, dan Akuisisi Data Menggunakan Arduino dengan Antarmuka WinForms. Studi Kasus: Temperatur Assyari Rahmatullah, Faiprianda; Putra, Rafly Yose; Fermi, Muhammad Iwan; Rionaldo, Hari
Jurnal Teknik: Media Pengembangan Ilmu dan Aplikasi Teknik Vol 22 No 1 (2023): Jurnal Teknik - Media Pengembangan Ilmu dan Aplikasi Teknik
Publisher : Fakultas Teknik - Universitas Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55893/jt.vol22no1.492

Abstract

Research was conducted to develop a data acquisition and control system using Arduino on a Windows operating system based on a Graphical User Interface (GUI). The data acquisition system can store measurement results data which can be used for analysis of the control system. The devices used are an Arduino type Mega 2560 microcontroller and a K type thermocouple using the MAX6675 driver. The GUI was created in the C# programming language using the WinForms application. Data acquisition is carried out using an Arduino device connected to a computer via a USB connection. The control system works by regulating the water heater connected to the relay by Arduino using the setpoint value on the GUI. The data acquisition and control system is designed using PID control mode with parameters Kp = 1.189159, Ki = 2.038558, and Kd = 0.173419. Based on the experimental results, the PID control mode has the smallest error value, namely 871.7 using the IAE method and 402,457 using the ITAE method.
Co-Authors Anggrayni, Elma Assyari Rahmatullah, Faiprianda Dizikri, Dizikri Hasudungan, Janso Hutagalung, Maha Putra M. Iwan Fermi Mazlani Meilany Sri Utami Mutia, Sarah Nurhayati Nurhayati Pamungkas, Tegar Panjaitan, Angga Marusaha Tamba Putra, Rafly Yose Rafi, M Khaidiz Rahmatullah, Faiprianda Assyari Randi Sanjaya, Randi Rizki, Juliana Siregar, Dompak M. Syahputra, Dede Warman Fatra, Warman Z Zulfansyah Zuchra Helwani Zulfansyah Zulfansyah Zulfansyah