• Title/Summary/Keyword: carbon emission amount

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A Study on the Amount of Carbon Emission of Organic Materials through Life-Cycle Assessment (LCA) (전과정평과를 통한 유기농자재의 탄소배출량 산정연구 -유기질비료를 중심으로-)

  • Yoon, Sung-Yee;Kwon, Hyuk-Jun
    • Korean Journal of Organic Agriculture
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    • v.19 no.1
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    • pp.23-38
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    • 2011
  • ● The current world is suffering abnormal climate caused by global warming. The main cause of global warming is greenhouse gas such as carbon dioxide. The carbon labeling system and carbon traceability system being pushed ahead in the agricultural sector is the policy for responding to climate change to reduce greenhouse gas emissions. To make this policy more effective and enhanced, the amount of carbon emissions should be calculated based on the kind of crops or the various businesses in the agricultural sector. Therefore, in order to estimate the accurate amount of carbon emissions, it is necessary to establish carbon dioxide emission intensity of various agricultural materials added onto the agriculture, and to calculate the amount of carbon dioxide emission for each crop according to agricultural production. The purpose of this study is to establish the amount of emission, emission per agricultural materials, of agricultural materials being added for crop production as a basic step, and emission intensity which can be used in the future market in order to estimate accurate amount of carbon emission in all the policies being promoted in the agricultural sector. Therefore, in this study, in order to build LCI D/B about organic fertilizers among many organic materials added onto the organic agriculture sector, one leading company in organic fertilizer production was selected and LCA was conducted for this leading company. We had to build the intensity and integrated average concept of intensity upon the two cases once production farmers for their own consumption and farms besides organic fertilizer company were categorized even if it's little amount. But in this study, individually produced organic fertilizers were excluded. Calculated results are following. Carbon emission of mixed expeller cake fertilizer in organic fertilizer was 1,106,966.89kg-$CO^2$ and emission intensity was 0.01606kg-$CO^2$, respectively. Total emission of mixed organic fertilizers was 241,523.2kg-$CO^2$ and emission intensity was 0.01705kg-$CO^2$. And total emission of organic compound fertilizers was 94,592.66kg-$CO^2$ and emission intensity was 0.01769kg-$CO^2$, respectively.

Environmental Impact Assessment for Development Projects Considering Carbon Sink and Sequestration(II) - Focused on a Housing Redevelopment Project - (탄소흡수원을 고려한 개발사업 환경영향평가 방안(II) - 주택 재개발 사업을 중심으로 -)

  • Hwang, Sang Il;Park, Sun Hwan
    • Journal of Environmental Impact Assessment
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    • v.20 no.1
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    • pp.79-87
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    • 2011
  • In this study, we investigated the effect of carbon sequestration and sink on the environmental impact assessment of a housing redevelopment project. Through the case study, we found that the amount of carbon sequestration and sink increased with the increase of the area of park and green space and, furthermore, the amount of carbon emission decreased slightly with implementation of district heating and renewable energy. Therefore, it is necessary for its land use plan to be established to minimize the amount of net carbon emission, taking account of both the amount of present carbon emission and the amount of the future carbon sink, sequestration, and emission.

Atmospheric $Co_2$sequestration by urban greenspace (도시녹지에 의한 대기 $Co_2$의 흡수 -춘천시를 대상으로-)

  • 조현길;윤영활;이기의
    • Journal of the Korean Institute of Landscape Architecture
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    • v.23 no.3
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    • pp.80-93
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    • 1995
  • The purpose of this study was to assess functioni fo urban greenspace to reduce atmospheric CO\sub 2\ concentration. The study quantified carbon storage in urban greenspace and carbon emission by fossil fuel consumptio in Chuncheon. The amount of carbon storage in vegetation by land use type was 0.02kg/$m^2$ for commercial land, 4.36kg/$m^2$ for natural land, and 0.54kg/$m^2$ for the other urban lands. In 1994, total amount of carbon emission by fossil fuel consumption was about 257,358 metric tons, and the per capita carbon emission was 1.4 metric ton. Total amount of carbon storage in vegetation was 42,942 metric tons, approximately 17% of the carbon emission. This study excluded quantification of carbon storage in soils. The role of urban greenspace to sequester atomspheric carbon might be much greater, if a soil greenspace to sequester atmospheric carbon might be much greater, if a soil greenspace to sequester atmospheric carbon might be much greater, if a soil carbon storage is included quantification of carbon storage is included. However, increasing coverage of trees and managing them for healthy growth would not be sufficient for avoiding adverse impacts by future climate change. Additional measures should be followed such as an increase of energy use efficiency and development of substitute energy.

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Investigation of field emission mechanism of undoped polycrystalline diamond films (도핑되지 않은 다결정 다이아몬드 박막의 전계방출기구 조사)

  • 심재엽;지응준;송기문;백홍구
    • Journal of the Korean Vacuum Society
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    • v.8 no.4A
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    • pp.417-424
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    • 1999
  • In order to investigate field emission mechanism of undoped polycrystalline diamond films, diamond films with different structural properties were deposited by varying positive substrate bias and/or $CH_4$ concentration. When increasing $CH_4$ concentration and positive substrate bias voltage, nondiamond carbon content in diamond films increased. Increase of nondiamond carbon content with increasing substrate voltage is ascribed to increase of substrate and excess generation of $CH_n$ radicals. Field emission properties of undoped polycrystalline diamond films ere significantly enhanced with increasing nondiamond carbon content. For diamond films with a small amount of nondiamond carbon, electrons are emitted through diamond surface while for the films with a large amount of nondiamond carbon, electron emission occurs through diamond bulk as well as surface. From this study, depending on nondiamond carbon content two field emission mechanisms were suggested.

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Prediction of the Carbon Dioxide Emission Change Resulting from the Changes in Bovine Meat Consumption Behavior in Korea (우리나라 쇠고기 소비 행태 변화에 의한 이산화탄소 배출 변화량 예측)

  • Yeo, Min Ju;Kim, Yong Pyo
    • Journal of Korean Society for Atmospheric Environment
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    • v.31 no.4
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    • pp.356-367
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    • 2015
  • A consumption based study on the carbon dioxide ($CO_2$) emission change due to the changes in the bovine meat consumption behavior in Korea was carried out. It was found that if the consumption of bovine meat be reduced by half, the reduction amount of $CO_2$ emissions be over 0.8 $MtCO_2e$ in all senarios in 2023. This amount is equivalent to over 50% of the greenhouse gases (GHGs) emission reduction target in agriculture and forestry, and fishery, a significant reduction. It was also found that the $CO_2$ emission reduction amount in consumption-based approach was the largest when the consumption of the imported bovine meat be reduced, though the difference was not that large.

Field Emission mechanism of undoped polycrystalline diamond films

  • Shim, Jae-Yeob;Song, Kie-Moon;Lee, Se-Jong;Baik, Hong-Koo
    • 한국정보디스플레이학회:학술대회논문집
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    • 2000.01a
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    • pp.135-136
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    • 2000
  • Field emission mechanism of undoped polycrystalline diamond films with a different amount of nondiamond carbon has been investigated using a transparent anode imaging technique and an electrolytic decoration technique. It is confirmed that for the films with a large amount of nondiamond carbon, electron transport occurs mainly through conductive grain boundaries while for the films with a small amount of nondiamond carbon, electron transports preferentially through diamond surface.

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A Study on the Analysis of Carbon Emission according to Energy Usage in Construction Site (건설현장 내 에너지 사용량에 따른 탄소배출량 분석에 관한 연구)

  • Lee, Chung-Won;Tae, Sung-Ho;Lim, Hyo-Jin
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2023.05a
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    • pp.215-216
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    • 2023
  • As the introduction of new climate system, efforts to change carbon neutrality, efforts to convert carbon neutrality. In Korea, we are setting up carbon emissions through greenhouse gas and energy target management system for business and companies that emit carbon emissions. The construction industry quantitatively predict the carbon emissions, but it is struggling to set up the amount of carbon emissions before construction stage, but it is suffering from lack of data. Therefore, this study was conducted by collecting data on the energy usage amount of carbon emissions according to the energy usage of the construction phenomenon and low-capacity prediction of the construction phenomenon. Through collected data, the average energy usage amount by building users and evaluated the average carbon emissions. It also evaluated the contribution of carbon emissions by energy sources.

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LIfe Cycle Assessment(LCA) for Calculation of the Carbon Emission Amount of Organic Farming Material -With Oyster-shell, Expanded Rice Hull, Bordeaux Mixture Liquid- (유기농자재의 탄소배출량 산정을 위한 전과정평가(LCA) -패화석, 팽연왕겨, 보르도액을 중심으로-)

  • Yoon, Sung-Yee;Yang, Dong-Wook
    • Korean Journal of Organic Agriculture
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    • v.20 no.4
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    • pp.475-490
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    • 2012
  • Since 1997, Korean Ministry of Knowledge Economy and Ministry of Environment have established data on some 400 basic raw and subsidiary materials and process like energy, petro-chemical, steel, cement, glass, paper, construction materials, transportation, recycling and disposal etc by initiating establishment of LCI database. Regarding agriculture, Rural Development Administration has conducted establishment of LCI database for major farm products like rice, barley, beans, cabbage and radish etc from 2009, and released that they would establish LCI database for 50 items until 2020 later on. The domestic LCI database for seeds, seedling, agrochemical, inorganic, fertilizer and organic fertilizer etc is only at initial stage of establishment, so overseas LCI databases are brought and being used. However, since the domestic and overseas natural environments differ, they fall behind in reliability. Therefore, this study has the purpose to select organic farming materials, survey the production process for various types of organic farming materials and establish LCI database for the effects of greenhouse gas emitted by each crop during the process. As for selecting methods, in this study organic farming materials were selected in the method of direct observation of material and bottom-up method a survey method with focus on the organic farming materials admitted into rice production. For the basic unit of carbon emission amount by the production of 1kg of organic farming material, the software PASS 4.1.1 developed by Korea Accreditation Board under Ministry of Knowledge Economy was used. The study had the goal to ultimately provide basic unit to calculate carbon emission amount in executing many institutions like goal management system and carbon performance display system etc in agricultural sector to be conducted later on. As a result, emission basic units per 1kg of production were calculated to be 0.04968kg-$CO_2$ for oystershells, 0.004692kg-$CO_2$ for expanded rice hull, and 1.029kg-$CO_2$ for bordeaux mixture liquid.

A Study on Improvement and Effect of Carbon Point Program for Residential Buildings in Daegu (대구광역시 주거 건축물의 이산화탄소 배출 감축을 위한 탄소포인트제의 효과 및 개선방향에 관한 연구)

  • Yeo, Myung-Kil;Jeon, Gyu-Yeob;Hong, Won-Hwa;Cho, Woong-Ho
    • Journal of the Korean housing association
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    • v.23 no.4
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    • pp.11-18
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    • 2012
  • The amount of energy consumption in the buildings is approximately 20% of domestic energy consumption. The Carbon Point Program have been published on reduction of greenhouse gas emission in buildings under the paradigm of 'Low Carbon Green Growth'. This study focuses on the effect of 'Carbon Point Program' for residential buildings in Daegu. The amount of electricity and waterwork consumption and information of households were investigated to analyse the effect of carbon point program. The samples are situated in Deagu and are apartment in Bukgu and Suseonggu. The $CO_2$ emission is analysed by factors of energy resource and household organization between before participating and after participating in Carbon Point Program. The participation type has a difference of voluntary participation in Suseonggu and passive participation in Bukgu. Based on this investigation, average amount of $CO_2$ emission was reduced from voluntary participation households but all of them did not. To promote the effect of Carbon Point Program, this study proposes that needing the plans to raise will and activity of reducing carbon and to help participation which have disadvantage against achieving reduction.

A Study on Carbon Incentive System Based on Investigation of Energy Consumption in Korean Universities (대학 캠퍼스의 에너지 소비 실태 조사를 통한 탄소 인센티브 제도 연구)

  • Kim, Kyung-Su;Shin, Moon-Su;Koo, Ja-Kon
    • Hwankyungkyoyuk
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    • v.23 no.2
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    • pp.65-81
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    • 2010
  • Universities which have taken an important role to develop the human resources, became one of emitters of greenhouse gases, they need to find a way to reduce global warming gases through reduction of energy consumption. This study is intented to propose a solution that can reduce the greenhouse gases at universities located in Korea. To conduct this study, we have chosen a university at Wonju in Kangwon province for a case study and investigated the emissions of carbon dioxide from campus facilities and residential area. The data has become a footstone to estimate the assumed amount of carbon emission for top 23 energy consumption universities in Korea. We calculate the amount for carbon emission, not only for facilities in campus, but also for residential buildings, amount for emission is increased severely by showing $9780.94tCO_2$, which is 2.1 times more than average amount for emission of greenhouse gases researched in existing statistics. Universities have difficulty in introducing new energy generation system, as having been done business companies or other commercial facilities but they are required to introduce some educational methods since it is a academic space. Incentive to universities reducing carbon emission in campus is a system to provide incentives with students, professors, administrative personnels and others in campus as a compensation for their efforts to save energy. It is needed to establish the infrastructures for measuring energy consumption in campus.

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