13:45 〜 15:15
[HGG01-P07] Techno-economic assessment of hydrogen supply chain network by utilization of aluminum waste materials and natural acidic hot-spring water
キーワード：Hydrogen, Economic Assessment, Geothermal Utilization
Hydrogen which is an energy carrier can be produced from various natural sources such as solar, water and natural gas. Depending on the source, it can be produced through different methods like steam methane reforming and electrolysis. However, there are recent work that studies the utilisation of waste metals with natural acidic hot spring water for hydrogen generation. In previous study by Alviani et al. (2021), a new system called aluminum-hot spring reaction (AHR) was introduced which uses low grade aluminum waste to react with an acidic hot spring with extremely low pH (~1) and boiling temperature (~100ºC). From the reaction, it resulted in approximately ~55 mmol H2 gAl-1 which is nearly 100% hydrogen yield. In addition, the environmental impact assessment obtained from the study for waste aluminum chips is -83 CO2-eq kg H2-1 resulted to be more environmentally friendly as compared to using primary aluminum. This way provides the opportunity to reduce waste from being sent to landfills and help reduce carbon emission.
An optimal pathway in the hydrogen supply chain (HSC) network is required to aid in the hydrogen economy transition. The network must be assessed on all three aspects of sustainability to ensure its long-term viability of a manufacturing network and assist in the supply chain decision-making. The utilisation of hydrogen can boost the sustainability and dependability of an energy system and perform a vital function in the system's flexibility. Many developed countries such as Japan, the United States, and European Union have developed their nation’s hydrogen roadmap to stimulate hydrogen production and prepare for the clean energy transition. In this study, a superstructure of the hydrogen supply chain model was developed with two different scenarios based on feedstock supply and existence of the hydrogen refueling station (HRS). The objective is to identify which network would be optimal for Semboku city to adopt focusing in economic aspect of the supply chain. As green hydrogen can be produced from both solar and hot springs, stakeholders will require deeper insight before deciding to utilize hot springs for hydrogen generation since solar energy is currently considered as an established technology with low levelized cost. The result obtained provides the most feasible network as well as the optimal route and configuration of overall HSC. This study emphasise on the transportation fuel for local buses as user demand of hydrogen energy.
Future research will assess the social acceptance of hot spring utilisation of the local public and stakeholders as it is known as the biggest barrier especially by local hot-spring business people. The assessment will cover the overall sustainability aspect of this work area and provide information for other potential areas that can transition to a small and independent energy network. This work supports SDG 7: Affordable and Clean Energy.
References
[1] Alviani VN, Hirano N, Watanabe N, Oba M, Uno M, Tsuchiya N. Local initiative hydrogen production by utilization of aluminum waste materials and natural acidic hot-spring water. Appl Energy 2021;293:116909. doi:10.1016/j.apenergy.2021.116909.
An optimal pathway in the hydrogen supply chain (HSC) network is required to aid in the hydrogen economy transition. The network must be assessed on all three aspects of sustainability to ensure its long-term viability of a manufacturing network and assist in the supply chain decision-making. The utilisation of hydrogen can boost the sustainability and dependability of an energy system and perform a vital function in the system's flexibility. Many developed countries such as Japan, the United States, and European Union have developed their nation’s hydrogen roadmap to stimulate hydrogen production and prepare for the clean energy transition. In this study, a superstructure of the hydrogen supply chain model was developed with two different scenarios based on feedstock supply and existence of the hydrogen refueling station (HRS). The objective is to identify which network would be optimal for Semboku city to adopt focusing in economic aspect of the supply chain. As green hydrogen can be produced from both solar and hot springs, stakeholders will require deeper insight before deciding to utilize hot springs for hydrogen generation since solar energy is currently considered as an established technology with low levelized cost. The result obtained provides the most feasible network as well as the optimal route and configuration of overall HSC. This study emphasise on the transportation fuel for local buses as user demand of hydrogen energy.
Future research will assess the social acceptance of hot spring utilisation of the local public and stakeholders as it is known as the biggest barrier especially by local hot-spring business people. The assessment will cover the overall sustainability aspect of this work area and provide information for other potential areas that can transition to a small and independent energy network. This work supports SDG 7: Affordable and Clean Energy.
References
[1] Alviani VN, Hirano N, Watanabe N, Oba M, Uno M, Tsuchiya N. Local initiative hydrogen production by utilization of aluminum waste materials and natural acidic hot-spring water. Appl Energy 2021;293:116909. doi:10.1016/j.apenergy.2021.116909.