Material Life Cycle Assessment on Mg2NiHx-5 wt% CaO Hydrogen Storage Composites 


Vol. 27,  No. 2, pp. 107-114, Jun.  2021
10.7464/ksct.2021.27.2.107


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  Abstract

Material Life Cycle Assessment (MLCA) was performed to analyze the environmental impact characteristics of the Mg2NiHx-5 wt% CaO hydrogen storage composites’ manufacturing process. The MLCA was carried out by Gabi software. It was based on Eco-Indicator 99’ (EI99) and CML 2001 methodology. The Mg2NiHx-5 wt% CaO composites were synthesized by Hydrogen Induced Mechanical Alloying (HIMA). The metallurgical, thermochemical characteristics of the composites were analyzed by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), specific surface area analysis (Bruner-Emmett-Teller, BET), and thermogravimetric analysis (TGA). As a result of the CML 2001 methodology, the environmental impact was 78% for Global Warming Potential (GWP) and 22% for Eutrophication Potential (ETP). In addition, as a result of applying the EI 99’ methodology, the acidification was the highest at 43%, and the ecotoxicity was 31%. Accordingly, the amount of electricity used in the manufacturing process may have an absolute effect on environmental pollution. Also, it is judged that the leading cause of Mg2NiHx-5 wt% CaO is the addition of CaO. Ultimately, it is necessary to research environmental factors by optimizing the process, shortening the manufacturing process time, and exploring eco-friendly alternative materials.

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  Cite this article

[IEEE Style]

S. HW, H. JH, K. EA, H. TW, "Material Life Cycle Assessment on Mg2NiHx-5 wt% CaO Hydrogen Storage Composites," Clean Technology, vol. 27, no. 2, pp. 107-114, 2021. DOI: 10.7464/ksct.2021.27.2.107.

[ACM Style]

Shin HW, Hwang JH, Kim EA, and Hong TW. 2021. Material Life Cycle Assessment on Mg2NiHx-5 wt% CaO Hydrogen Storage Composites. Clean Technology, 27, 2, (2021), 107-114. DOI: 10.7464/ksct.2021.27.2.107.

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pISSN : 1598 - 9712
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