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All Journal Jurnal Pendidikan Kimia (JPKim) Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Sprocket : Journal of Mechanical Engineering Teknomekanik Journal of Innovation and Technology Automotive Experiences Jurnal Insinyur Profesional
Simanjuntak, Janter Pangaduan
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Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health

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Optimization of the upgrading process of bio-oil from palm fronds: The effect of temperature, catalyst mass ratio, and reaction time Sihombing, Junifa Layla; Pulungan, Ahmad Nasir; Simanjuntak, Janter Pangaduan; Hasibuan, Muhammad Irvan; Efiyanti, Lisna; Rahayu, Rahayu; Audi, Ajeng Asri; Hadi, Muhammad
Jurnal Pendidikan Kimia Vol. 16 No. 1 (2024): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i1.52556

Abstract

The lignocellulosic component contained in palm frond waste has potential as an alternative fuel by converting it into bio-oil through a pyrolysis process. However, bio-oil has poor quality when compared to conventional fuels. Therefore, the Hydrodeoxygenation (HDO) process has been widely developed as a promising way to improve the poor physicochemical properties of bio-oil. In this study, a bimetallic CuO-ZnO catalyst loaded on mordenite zeolite was used as a catalyst for HDO bio-oil from palm fronds. Optimization efforts were made on several parameters that affect the reaction including temperature, catalyst mass, and reaction time. This study aims to improve the quality of bio-oil and determine the effect of variations in reaction parameters on the physicochemical properties of upgraded bio-oil. The optimum condition found was the HDO process with a catalyst mass of 3.5 wt% at 325 °C for 120 min. The physicochemical properties of bio-oil after the upgrading process were successfully improved from those of raw bio-oil. The result is a decrease in water content and total acid number, an increase in C and H content accompanied by a reduction in oxygen content with a degree of deoxygenation reaching 72.9%, and an increase in higher heating value (HHV).
Process design and simulation study of an electricity generation plant utilizing low-grade wasted thermal energy using aspen Hysys software Simanjuntak, Janter Pangaduan; Pakpahan, Binsar Maruli Tua; Purwantono, Purwantono; Al-attab, Khaled Ali
Teknomekanik Vol. 6 No. 1 (2023): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (245.539 KB) | DOI: 10.24036/teknomekanik.v6i1.23872

Abstract

An analysis of the operational parameters of a small-scale electrical generation facility that uses the thermal energy contained in the flue gases from rubbish waste incineration is the goal of this study. To assess this system, the organic Rankine cycle (ORC) thermodynamic system was used. Since the organic fluid has a lower boiling point than water and can be evaporated with less thermal energy, it was chosen as a heat transfer medium instead of water. Aspen Hysys was utilized as a simulation tool, while R11 was used as the working fluid. To maximize the amount of available electrical output power, the plant's operational temperature, working fluid flow rate, and pressure are all maximized. According to the simulation's findings, flue gas may generate electric power between the ranges of 3.12 – 29.71 kW at working pressures between 2.5 and 3.5 bar and working fluid flow rates between 3.600 and 7200 kg/h when the temperature is between 50 and 95 oC. The system reaches a thermal efficiency of about 8.30 at 350 kPa of working fluid pressure.
Co-Authors Agus N Putra Ahmad Nasir Pulungan Al-attab, Khaled Ali Audi, Ajeng Asri Bisrul Hapis Tambunan Bisrul Hapis Tambunan, Bisrul Hapis DINA AMPERA Eka Daryanto, Eka Hanapi Hasan Harun Sitompul Hasibuan, Muhammad Irvan Himsar Ambarita Idroas, Mohamad Yusof Ilmi Ilmi, Ilmi Junifa Layla Sihombing, Junifa Layla Lisna Efiyanti Matondang, Zulkifl Muhammad Hadi Nur, Taufiq Bin Pakpahan, Binsar Maruli Tua Purwantono, Purwantono Rahayu Rahayu Riduwan Riduwan, Riduwan Seetawan, Tosawat Siahaan, Enzo W.B Simanjuntak, Marlina Siregar, Batumahadi Sumaryanto Syafiatun Siregar Syahreza, Dina Sarah T Teviana Tulus Burhanuddin Sitorus Zainon, Mohamad Zamri Zainon, Mohd Zamri Zulkifli, Nurin Wahidah Binti Mohd