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명재욱(Jaewook Myung) 유기성자원학회 2022 유기성자원학회 학술발표대회논문집 Vol.2022 No.추계
Water, energy, materials, and food are essential for human well-being, poverty reduction, and sustainable development. Viable steps need to be taken to renew our increasingly scarce essential resources. One option is to recover these valuable resources (water, energy, materials, fertilizers, food, etc.) from waste. This research presents recent innovations to transform waste treatment infrastructure into resource recovery centers by converting organic waste into biogas methane and using methanotrophic bacteria to convert biogas methane into value-added products. Methanotrophic bacteria can produce biodegradable bioplastic, polyhydroxyalkanoates (PHAs), a sustainable alternative to petroleum-based plastics that can sequester carbon and help address climate change. Methanotrophs can also produce prebiotic fish/animal foods that improve fish/animal health and enhance growth. Altogether, use of methanotrophic bacteria in waste treatment infrastructure enables production of valuable bioproducts.
Investigation of carbon nanomaterials via metal-oxide catalytic pyrolysis of waste mask
Do Hyun Lee(Do Hyun Lee),Jaewook Myung(Jaewook Myung) 유기성자원학회 2022 유기성자원학회 학술발표대회논문집 Vol.2022 No.추계
Owing to the continuous demand for masks caused by the continued COVID-19, several waste masks made of recalcitrant plastics have accumulated in nature, causing environmental and societal problem in the waste management process for smart cities. To deal with this present issue, metal-oxide catalytic pyrolysis process was conducted. The catalyst was prepared using nickel and iron through the impregnation method in which metal oxide (alumina (Al2O3) and zeolite (ZSM-5)) were selected as a support. Carbon nanomaterials were observed on the nickel-doped metal oxide catalyst surface, and a growth mechanism of carbon nanomaterial on the surface of iron-nickel doped zeolite was identified by Transmission Electron Microscope (TEM). These findings are expected to contribute to the development of sustainable plastic recycling technology aimed at creating value-added products in connection with the government's waste upcycling project.