Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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2011 Nitrogen Budget of South Korea Including Nitrogen Oxides in Gas Phase

기체상 질소산화물을 포함한 2011년도 대한민국 질소수지 산정

  • Shin, Jin-Hwan (Department of Civil Engineering, Korea National University of Transportation) ;
  • Yoo, Chae-Won (Department of Civil and Environmental Engineering, Hanyang University) ;
  • An, Sang-Woo (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Park, Jae-Woo (Department of Civil and Environmental Engineering, Hanyang University)
  • 신진환 (한국교통대학교 토목공학과) ;
  • 유채원 (한양대학교 건설환경공학과) ;
  • 안상우 (한양대학교 건설환경공학과) ;
  • 박재우 (한양대학교 건설환경공학과)
  • Received : 2013.11.12
  • Accepted : 2014.01.12
  • Published : 2014.02.28
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Abstract

The present study estimated nitrogen budget of South Korea including nitrogen oxides (NOx) in 2011. Emission sources of NOx were calculated with the higher contributors, such as vehicles, businesses, power plants, based on the IPCC and EPA reports. Moreover, nitrogen budget was separated for city, agriculture livestock and forest. Input and output were chemical fertilizer, crop uptake, fixation, irrigation, compost, leaching, volatilization, imported food, denitrification, runoff, and so on. Annual nitrogen input were 1,692,650 ton/yr and output were 837,739 ton/yr which were increased from 2010 budget. In 2011, NOx emissions by vehicles, power plants, and businesses were 308,207 ton/yr, 601,437 ton/yr, and 469,946 ton/yr, respectively. Including nitrogen oxide, total nitrogen input and output in 2011 was calculated as 5,652,366 ton/yr and 1,425,371 ton/yr, respectively.

본 논문에서는 2011년도 대한민국에서 발생된 질소수지에 관한 연구에 기존 연구에서는 포함되지 않았던 질소산화물(NOx)의 발생량을 포함하여 추정하였다. 질소산화물의 발생원은 IPCC와 EPA보고서에 의해 배출되는 기여율이 높은 항목을 참고하여 자동차, 사업장, 발전소에 관해 산정하였다. 이외 질소수지연구는 발생원에 따라 도시지역과 농경지 및 축산업지역, 임야지역으로 구분하였으며, 질소(N)의 유입과 유출에 초점을 맞추어 시도별로 연구하였다. 질소의 유입에 대해서는 농경지의 비료에 의한 질소유입량과 생물학적 고정량, 대기침착량, 관개용수에 의한 유입량, 화학비료에 의한 질소발생량, 축산업 지역에서의 사료에 의한 유입량, 임야지역의 고정 및 침착량, 도시에서 식료품 수입에 의한 질소발생량, 당 해에 생산된 농작물이 도시지역으로 유입되어 발생하는 질소량, 자동차와 발전소, 사업장에서 사용된 연료에 의한 질소발생량을 추정하였으며, 유출로는 작물에 의한 흡수량과 탈질량, 지하수로의 유출되어 발생하는 양, 가축분뇨의 해양투기, 농경지에서 흡수되는 양, 임야에서 흡수 및 탈질량, 도시에서 해양투기되는 양과 탈질량, 연료의 연소과정에서 배출되는 질소산화물을 대상으로 하였다. 질소산화물을 제외한 2011년 유입량은 1,692,648 ton/yr로 나타났으며, 유출은 1,005,496 ton/yr로 산정되었다. 질소산화물의 발생량은 자동차로 인해 308,207 ton/yr 생성되었으며, 발전소에서는 601,437 ton/yr, 사업장에서는 469,946 ton/yr이 배출된 것으로 산정되었다. 따라서 질소산화물을 포함한 2011년도 총 질소수지는 5,652,366 ton/yr 유입되었고 1,425,371 ton/yr이 유출된 것으로 산정되었다.

Keywords

References

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