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8. Vestiges of Past Generation: Threats to 5G Core Network

Author

Park, Seongmin, Choi, Bomin, Park, Youngkwon, Kim, Dowon, Jeong, Eunseon, Yim, Kangbin, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Barolli, Leonard, editor, Poniszewska-Maranda, Aneta, editor, and Park, Hyunhee, editor

Published
2021
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9. Security Problems of 5G Voice Communication

Author

Park, Seongmin, Cho, HyungJin, Park, Youngkwon, Choi, Bomin, Kim, Dowon, Yim, Kangbin, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, and You, Ilsun, editor

Published
2020
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13. Comparative study of enhanced catalytic properties of clay-derived SiO2 catalysts for biodiesel production from waste chicken fat.

Author

Riaz, Iqra, Qamar, Obaid Ali, Jamil, Farrukh, Hussain, Murid, Inayat, Abrar, Rocha-Meneses, Lisandra, Akhter, Parveen, Musaddiq, Sara, Karim, Muhammad Ramzan Abdul, and Park, YoungKwon

Abstract

The use of biodiesel is a proactive measure that can be implemented to reduce emissions of greenhouse gases and other adverse environmental impacts. However, one of the major setbacks to biodiesel production is its relatively higher cost compared to petroleum diesel. The optimistic solution to this is valorization of biomasses like waste chicken fat (WCF) and clay for deriving non-edible oil and catalyst respectively. Herein, we report the synthesis of clay derived SiO2 catalyst impregnated with SrO, Bi2O3, CuO and CaO. The developed catalysts were characterized by FTIR, XRD, and SEM. XRD studies confirmed the successful impregnation of active metallic oxide on SiO2 support. Further, these catalysts were employed for biodiesel production from WCF, and SrO/SiO2 was found to be most effective and efficient catalyst for biodiesel production from WCF. Hence, SrO/SiO2 was adapted to optimize the different transesterification reaction parameters such as methanol to oil ratio, catalyst loading, reaction temperature and time. The optimized conditions for maximum biodiesel yield 98.9% were found to be 65 °C in 1 h with 12:1 methanol to oil ratio and 1 wt% catalyst loading. The biodiesel produced was also analyzed by GC-MS. The obtained biodiesel yield shows that clay can be a potential, and cost-effective, catalyst source to produce biodiesel from WCF. [ABSTRACT FROM AUTHOR]

Published
2023
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