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All Journal Eksergi: Chemical Engineering Journal KOVALEN: Jurnal Riset Kimia Kinetika International Journal of Applied Technology Research Jurnal Difusi Journal of Green Science and Technology
Bambang Soeswanto
Department Of Chemical Engineering, Politeknik Negeri Bandung
Aerospace Engineering Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Transportation

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Journal : International Journal of Applied Technology Research

 1 
Effect of Process Variables and Zeolite Adsorbent in Coffee Bean Drying Soeswanto, Bambang; Edi Wahyuni, Ninik Lintang; Prihandini, Ghusrina; Pratama, Yusuf; Firmansyah, Taufik Akbar; Widyabudiningsih, Dewi
Jurnal Internasional Penelitian Teknologi Terapan Vol 4 No 1 (2023): April 2023
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v4i1.100

Abstract

Green coffee beans to be stored for transportation must meet storage quality standards, especially the maximum moisture content of 12.5%, so the drying process must be carried out to achieve quality standards, but still economical. The study aims to obtain optimum operating conditions on the drying of Arabica-type coffee beans using a fluidized bed dryer assisted by zeolite adsorbents in a separated fluidized bed prior to heating, as well as calculating the energy consumption of blowers and air heater. The operating conditions were varied, namely air flow rate of 1.79 – 2.29 m/s, air temperature of 45 o C, 50 o C, and 55 o C, zeolite adsorbent mass of 150 g, 175 g, and 200 g. The coffee beans quality tests carried out were the moisture, carbohydrates, protein content, and the visual appearance of the beans. The results show that the optimum drying process of coffee beans resulting a minimum protein and carbohydrate damage are the air velocity of 2.1 m/s, air temperature of 55°C, drying time of 240 minutes, and zeolite adsorbent mass of 150 grams, with energy consumption of 5.02 KWH (equivalent to 180 MJ/T). The addition of zeolite as much as 150 grams, 175 grams, and 200 grams as adsorbent was able to reduce the relative humidity (RH) of air by 16.65%, 18.60%, and 21.17% respectively. The drying rate of coffee beans is mainly influenced by air temperature (more predominantly) than the adsorption of air humidity by zeolite.
Effect of Fermentation Time on the Production of Ambon Banana Weevil Waste Bioethanol Budiastuti, Herawati -; Zulfa, Salma Indana; Sihombing, Nova; haryadi, haryadi; Muhari, Emma Hermawati; Soeswanto, Bambang; Widiastuti, Endang; Pullammanappallil, Pratap
Jurnal Internasional Penelitian Teknologi Terapan Vol 4 No 1 (2023): April 2023
Publisher : Bandung State Polytechnic (Politeknik Negeri Bandung)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/ijatr.v4i1.110

Abstract

The increase in population in Indonesia is directly proportional to the increase in the use of vehicles which results in an increase in fuel demand. The amount of fossil fuels continues to decrease and cannot be renewed, so alternative energy is needed, one of which is bioethanol. This study aims to make bioethanol from banana weevil waste, to determine the effect of fermentation time on the concentration of banana weevil bioethanol and to determine the concentration of bioethanol after going through the purification stage. The production of banana weevil bioethanol begins with the process of cutting the banana weevil which is then mashed with the help of water and then squeezed and starch is obtained and then hydrolyzed with the addition of glucoamylase and alpha-amylase enzymes for further anaerobic fermentation with the help of Saccharomyces cerevisiae with a concentration of 25%. In this study, variations of fermentation time were carried out for 5, 7, 9, and 10 days. The best fermentation time was obtained from 9 days of fermentation, where the conversion of glucose to bioethanol was 51%. The results of the analysis using a refractometer showed that the concentration of bioethanol obtained was 16.20% (v) which was obtained from fermentation for 9 days and purification using a rotary evaporator at a pressure of 360 mbar and a temperature of 500C.
Co-Authors -, Alfiana Adhitasari Alfiana Adhitasari Asyari, Restu Adji Alif Budiastuti, Herawati - Clarisa, Shintiya Dini Sri Wahyuni Edi Wahyuni, Ninik Lintang Elizabeth, Lidya Endang Kusumawati Endang Widyastuti Fatah, Khalaida Fania Firmansyah, Taufik Akbar Gunawan, Sinna Chaerunnabila Hariyadi, Tri Haryadi - Herawati Budiastuti Hidayatulloh, Irwan Kartika Dian Pratiwi Kurnia, Dianty Rosirda Dewi Luviana, Angely Marlina, Ari Muhari, Emma Hermawati Paramitha, Tifa Pratama, Yusuf Prihandini, Ghusrina Pullammanappallil, Pratap Putri, Alifhah Ananda Qobus, Muhammad Fauzy Ramadhana Rahmawati, Ranti Ramadhani, Laily lsna Retno Indarti Rispiandi Rispiandi Sihombing, Nova Sihombing, Rony Sihombing, Rony Pasonang Sudrajat Harris Abdulloh Suryadi, Joko Trirahayu, Dhyna Analyes Unung Leoanggraini Wahyuni, Ninik Lintang Edi Widiastuti, Endang Widyabudiningsih, Dewi Widyanti, Emmanuela Maria Yunus Tonapa Sarungu Yusuf, Yusmardhany Zulfa, Salma Indana