Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Life Cycle CO2 Assessment and Domestic Applicability Evaluation of the Drainage Material for Reclaimed Land Using Oyster Shell

굴 패각을 이용한 간척지 배수재의 전과정 CO2 배출량 산정 및 국내 적용성 평가

  • Jeon, Jihun (Department of Rural Systems Engineering, Seoul National University) ;
  • Son, Younghwan (Department of Rural Systems Engineering and Research Institute for Agriculture and Life Sciences, Seoul National University) ;
  • Kim, Donggeun (Department of Rural Systems Engineering, Seoul National University) ;
  • Kim, Taejin (Department of Rural Systems Engineering, Seoul National University)
  • Received : 2018.09.17
  • Accepted : 2018.11.08
  • Published : 2019.01.31
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Abstract

The objective of this study is to assess the environmental effect of the reclaimed land drainage method using oyster shell through the Life cycle $CO_2$ assessment, and to evaluate the applicability in South Korea. In this Study, the life cycle $CO_2$ emissions of oyster shell (OS) and crushed stone (CS, as avoided product) were assessed and compared. The Life Cycle Assessment method was used for quantitative evaluation of direct or indirect environmental effects of OS recycling. $CO_2$ was selected as the evaluation target material, and the scope of assessment includes the acquisition of materials, processing, transportation, construction phases. Compared to using CS, 77.0% of $CO_2$ emissions in acquisition and processing, 47.0% in transportation and 6.5% in construction phase were reduced, respectively by using of OS. The maximum transportation distance of OS was estimated according to transportation distance of CS. OS has environmental advantages than CS within about 26 - 101 km from the source. OS was found to be applicable to reclaimed lands up to 810 ha, 3,910 ha from Tongyeong and Yeosu, respectively. In addition, the amount of OS that could be used as drainage material for reclaimed land was much higher than annual OS production of South Korea. Therefore, it is considered that OS is sufficient to be used as drainage material for reclaimed land in South Korea.

Keywords

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Fig. 1 Phase and applications of LCA (ISO 14040 : 2006(E))

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Fig. 2 The system boundary of process in this study (OS, CS)

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Fig. 3 Locations of the selected sources of oyster shells

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Fig. 4 Locations and area of the selected reclaimed lands

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Fig. 5 CO2 emissions of OS, CS by changing of transportation distance

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Fig. 6 Maximum transportation distance of OS by transportation distance of CS

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Fig. 7 Applicability of OS drainage material to korean reclaimed land (from Tongyeong)

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Fig. 8 Applicability of OS drainage Material to korean reclaimed land (from Yeosu)

Table 1 Assumed conditions at processing, construction phase

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Table 2 Information on the use of data

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Table 3 Life cycle CO2 emissions of OS and CS

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