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All Journal JURNAL KIMIA SAINS DAN APLIKASI Journal of Physics: Theories and Applications Wikrama Parahita : Jurnal Pengabdian Masyarakat Jurnal Rekayasa Proses ASEAN Journal of Chemical Engineering JESCEE- Journal of Emerging Supply Chain, Clean Energy, and Process Engineering
Agung Nugroho
Department Of Chemical Engineering, Universitas Pertamina, Jalan Teuku Nyak Arief, Simprug, Kebayoran Lama, Jakarta 12220
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences

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Journal : ASEAN Journal of Chemical Engineering

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Comparison of Maseration and Sonication Method on Flavonoid Extraction from Mango Leaves: Effect of Solvent Ratio Alifiana Permata Sari; Nur Layli Amanah; Awalia Wardatullathifah; Agung Nugroho
ASEAN Journal of Chemical Engineering Vol 22, No 2 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.74204

Abstract

Mango leaf extract has proven to contain flavonoids that serve as antioxidants. In this study, a comparison between traditional maceration and sonication on flavonoid extraction from mango leaf was investigated. The various ratios of ethanol and acetone were utilized as solvents (1:5, 1:10, and 1:15). The sonication process, which uses an ultrasonic cleaning bath set at 40 oC, takes 30 minutes as contrasted to the maceration procedure of 36 hours treatment at room temperature. The flavonoid test using aluminum (III) chloride (AlCl3) colorimetric technique shows that acetone provides greater solvent power than ethanol. According to this study, the optimal ratios for the maceration and sonication procedures are 1:10 and 1:15, respectively. The maceration process resulted in the optimum extract of 0.186 mgQE/g dry leaves. Meanwhile, using a 1:15 acetone solvent ratio and the sonication method, the highest concentration of flavonoid components was discovered, reaching 0.143 mgQE/g dry material with 54 times shorter time.
A Comparative Study on The Electrochemical Properties of Hydrothermal and Solid-State Methods in The NCM Synthesis for Lithium Ion Battery Application Sylvia Ayu Pradanawati; Eduardus Budi Nursanto; Afif Thufail; Ahmad Zaky Raihan; Sugianto Sugianto; Haryo Satriya Oktaviano; Hanida Nilasary; Achmad Subhan; Agung Nugroho
ASEAN Journal of Chemical Engineering Vol 22, No 2 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.74209

Abstract

In this article, we report and compare the synthesis method of the active cathode materials based on nickel‐cobalt‐manganese (NCM) for lithium-ion battery application. We evaluate the hydrothermal and solid-state reaction method in NCM-622 synthesis, the material characterizations, and the battery performance. Based on the analytical results using X-ray diffraction (XRD), particles synthesized using hydrothermal and solid-state methods exhibit a highly crystalline NCM phase. NCM particles synthesized using solid-state reaction exhibit high-rate performance up to 10 C. The electrochemical impedance spectroscopy analysis shows that the charge transfer resistance (Rct) of NCM synthesized by the solid-state reaction (SSR) method was 25.9% lower than hydrothermal. Meanwhile, the ionic diffusivity of the SSR sample was 38.5% higher than the hydrothermal sample. These two factors lead to better performance when tested in a lithium-ion battery.
Co-Authors Achmad Subhan Afif Thufail Ahmad Zaky Raihan Alifiana Permata Sari Alifiana Permata Sari Arenst Andreas Arie Awalia Wardatullathifah Ayu Dahliyanti Dita Floresyona Eduardus Budi Nursanto Fadila Arum Rhamadani Gede W.P. Adhyaksa Hanida Nilasary Hary Perdana Kamal Haryo Satriya Oktaviano Haryo Satriya Oktaviano Ika Dyah Widharyanti Kristianto, Hans Muhammad Reza Wirayudha Pratama Nur Layli Amanah Nur Layli Amanah Nur Layli Amanah Nur Layli Amanah Paramita Jaya Ratri Ratna Frida Susanti Revo Gilang Firdaus Sugianto Sugianto Syahreza Angkasa Sylvia Ayu Pradanawati Tirta Rona Mayangsari Yose Fachmi Buys Yudi Rahmawan