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All Journal J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Journal of Community Development Journal of Engineering Science and Technology
Yuli Hananto
Politeknik Negeri Jember
Computer Science & IT Education Engineering Materials Science & Nanotechnology Nursing Public Health Social Sciences

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Journal : Journal of Engineering Science and Technology

 1 
Penurunan Kadar FFA (Free Fatty Acid) Minyak Jelantah Menggunakan Adsorben Arang Aktif Ampas Tebu Pada Proses Pembuatan Biodiesel Yuli Hananto; Juwita Rosdiana
Journal of Engineering Science and Technology Vol. 1 No. 1 (2023): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jesty.v1i1.1

Abstract

One of the obstacles in utilizing used cooking oil as a raw material for making biodiesel is the high FFA (Free Fatty Acid) content. An alternative way that can be used to reduce FFA levels is to use adsorbents to adsorb free fatty acids. This study aims to use bagasse as an adsorbent for activated charcoal to reduce the FFA content of used cooking oil in the process of making biodiesel. The process of reducing the FFA of used cooking oil was carried out by an adsorption process using activated bagasse charcoal with an increased temperature of 100 oC to accelerate the rate of adsorption and evaporation of water trapped in the used cooking oil while stirring at 500 rpm with a magnetic stirrer. The most optimal adsorbent mass for bagasse activated charcoal is to use a mass of 15% w/v used cooking oil, because it has the lowest average FFA value compared to other masses. The most optimal adsorption time for used cooking oil is at 60 minutes of adsorption because it has the lowest average FFA value compared to other adsorption times. FAME.
Peningkatan Kualitas Briket Ampas Kopi Menggunakan Perekat Kulit Jeruk Melalui Metode Torefaksi Terbaik Qanitah Qanitah; Yurdika Dwi Fatholah Akbar; Zeni Ulma; Yuli Hananto
Journal of Engineering Science and Technology Vol. 1 No. 1 (2023): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jesty.v1i1.3

Abstract

Energy is generally divided into two, the first is non-renewable energy for example oil, coal, and natural gas while the second is renewable energy such as water power, solar power, wind power, and biomass. Briquettes is one of the developments of biomass as an alternative fuel. The purpose of this study was to make and analyze the characteristics of coffee grounds briquettes using an adhesive from orange peel with torrefaction method. Torrefaction is a low temperature (200-300 oC) carbonization process without oxygen. Briquettes are made by percentage of coffee grounds and orange peel adhesive 70% : 30%, 60% : 40%, and 50% : 50%. Torrefaction process with a temperature of 200 oC within 60 minutes without any air or little air in the furnace with the addition of modified elbows. The results showed that the best composition was found in DK1 with a ratio of 70% coffee grounds with 30% orange peel adhesive, which has density 0.49 gr/cm3, water content 5.11%, volatile matter content 78.33%, bound carbon content 17.31%, 0.62% ash content, and 4656 cal/gr calorific value
Co-Authors Ahmad Rofi'i Alex Taufiqurrohman Zain Azamataufiq Budiprasojo Juwita Rosdiana Michael Joko Wibowo Qanitah Qanitah Risse Entikaria Rachmanita Yurdika Dwi Fatholah Akbar Zeni Ulma