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All Journal Jurnal Neutrino : jurnal fisika dan aplikasinya Konversi JURNAL PENDIDIKAN TAMBUSAI Jurnal Inovator Kinetika Teknika Sains : Jurnal Ilmu Teknik Chemical Engineering Journal Storage (CEJS) Jurnal Teknologi Kimia Unimal Innovative: Journal Of Social Science Research De Facto: Journal of international multidisciplinary sciences
Mustain Zamhari
Politeknik Negeri Sriwijaya
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Journal : Konversi

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Manufacturing the activated carbon catalyst of impregnated palm core shells for biodiesel production Rifki, Ahmad; Zamhari, Mustain; Purnamasari, Indah
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.v13i1.17470

Abstract

This research aims to produce activated carbon-based heterogeneous catalyst derived from palm kernel shells impregnated with a KOH solution and to determine the effects of the concentration of the KOH solution and the time period during impregnation. The variables observed included KOH concentration and impregnation time. The impregnation process used KOH solution with the solution concentrations of 1N, 2N, 3N, 4N and 5N with impregnation process within 18 hours, 21 hours and 24 hours. AAS, FTIR and SEM were analyzed after impregnation with different concentrations and times. The results of the analysis of potassium metal showed the highest absorption occurred at a concentration of 5N within 21 hours at 25.4570%. The application of the activated carbon catalyst from palm kernel shells was conducted in making biodiesel. The process of making biodiesel was carried out with a reaction time of 120 minutes at a temperature of 60℃ with a molar ratio of 1: 12 using a catalyst of 2% (% w/w). Biodiesel yield testing referred to SNI 04-7182-2015. The analysis results obtained showed 879 kg/m3 density, 6.1 cst viscosity, 0.5 acid number, and 174℃ flash point.
Regeneration of Ni/Al2O3 catalyst in CO2 methanation Melati, Rima; Junaidi, Robert; Zamhari, Mustain
Konversi Vol 13, No 2 (2024): OKTOBER 2024
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v13i2.19951

Abstract

CO₂ emissions are one form of greenhouse gas (GHG) emissions that contribute to global warming. CO₂ contributed 175.62 million tons in 2021, impacting greenhouse gas levels. One strategy to reduce the concentration of CO₂ in the atmosphere is to convert CO₂ gas into useful chemicals. One example of this is the hydrogenation of CO₂ to produce methane, which can serve as an alternative to LPG. The aim of this research is to produce methane gas by developing a fixed bed reactor in a simple manner. The catalyst Ni/Al2O3 with 20 grams and five regenerations could produce CH₄ up to 49.73% compared to 39.06% for those with 10 grams. However, the H2 gas remaining is higher for those with 10 grams (1.454 ppm compared to 1.042 ppm). Also, The CO2 gas remaining is higher for those with 10 grams (58.18% compared to 47.92%). The results of this study can be the basis for developing energy policies, encouraging investment in clean energy technologies, and supporting the reduction of greenhouse gas emissions for energy sustainability and resilience.
Co-Authors ., Fadarina ., Yuniar Akbar, Kiki Anerasari Meidinariasty Darmawan, Azzahrah Putri Erwana Dewi Fadillah, Nadia Zaky Indah Purnamasari Kristiyono Putro, Abraham Abimanyu Luthfiah, Sakinah Muhammad Yerizam Nabillah, Afrah Ningsih, Sintya Nurhakim, Ilham Nurjanah, Rizki Oktarina, Ayu Permadi, Jekasyah Putri, Shania Rachmatika, Nisa Ramadhani, Dea Rizki Rifki, Ahmad Rima Melati Robert Junaidi RR. Ella Evrita Hestiandari Saputri, Nuraldyla Suciaty Sari, Della Yusfita Sari, Dita Indah Toluna, Yona