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Study on Reduction Unburned Carbon Contents in Low Quality Fly Ash from Vietnam (베트남 저품위 비산재의 미연탄소 함량 저감 연구)

Kim, Keeseok;Lee, Jaewon;Lee, Dongwon;Min, Kyongnam
- Resources Recycling
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- v.29 no.2
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- pp.37-47
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- 2020
According to Vietnam government establishes additional thermal power plant, processing the coal ash from power plant is urgent issue. This study targeted reducing unburned carbon contents in low quality fly ash to below 6% that according to international standards. As a result, the unburned carbon contents of low quality fly ash was high and irregular as 5.3~23.6%, and it was possible to reduce unburned cabon contents to under 6%, in case of unburned carbon contents below 9.8% ashes using air classification, in case of unburned carbon contents below 23.6% ashes using combined process composed of air classification and electrostatic separation.
https://doi.org/10.7844/kirr.2020.29.2.37 인용 PDF KSCI

Development of a Digital Platform for Carbon Neutrality in the Ocean (해양 탄소중립 실현을 위한 디지털 플랫폼 개발)

Young-Hoon Yang;Jin-Hyoung Park;Deuk-Jae Cho
- Proceedings of the Korean Institute of Navigation and Port Research Conference
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- 2022.06a
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- pp.317-318
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- 2022
In accordance with global decarbonization, optimization and productivity improvement using digital twin are being sought, and software development for optimizing ship and marine energy operation is accelerating by selecting digital twin as a future core technology. In order to reduce the operating cost of ships and strengthen the competitiveness of the shipbuilding industry due to the international strengthening of regulations on carbon emissions, it is necessary to predict the carbon emission of ships in advance and provide a carbon reduction operation solution. A plan was carried out for the development of open digital platform technology and the establishment of an environment to support the securing of carbon transparency of the ship and offshore system.
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Development of 'Carbon Footprint' Concept and Its Utilization Prospects in the Agricultural and Forestry Sector ('탄소발자국' 개념의 발전 과정과 농림 부문에서의 활용 전망)

Choi, Sung-Won;Kim, Hakyoung;Kim, Joon
- Korean Journal of Agricultural and Forest Meteorology
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- v.17 no.4
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- pp.358-383
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- 2015
The concept of 'carbon footprint' has been developed as a means of quantifying the specific emissions of the greenhouse gases (GHGs) that cause global warming. Although there are still neither clear definitions of the term nor rules for units or the scope of its estimation, it is broadly accepted that the carbon footprint is the total amount of GHGs, expressed as $CO_2$ equivalents, emitted into the atmosphere directly or indirectly at all processes of the production by an individual or organization. According to the ISO/TS 14067, the carbon footprint of a product is calculated by multiplying the units of activity of processes that emit GHGs by emission factor of the processes, and by summing them up. Based on this, 'carbon labelling' system has been implemented in various ways over the world to provide consumers the opportunities of comparison and choice, and to encourage voluntary activities of producers to reduce GHG emissions. In the agricultural sector, as a judgment basis to help purchaser with ethical consumption, 'low-carbon agricultural and livestock products certification' system is expected to have more utilization value. In this process, the 'cradle to gate' approach (which excludes stages for usage and disposal) is mainly used to set the boundaries of the life cycle assessment for agricultural products. The estimation of carbon footprint for the entire agricultural and forestry sector should take both removals and emissions into account in the "National Greenhouse Gas Inventory Report". The carbon accumulation in the biomass of perennial trees in cropland should be considered also to reduce the total GHG emissions. In order to accomplish this, tower-based flux measurements can be used, which provide a direct quantification of $CO_2$ exchange during the entire life cycle. Carbon footprint information can be combined with other indicators to develop more holistic assessment indicators for sustainable agricultural and forestry ecosystems.
https://doi.org/10.5532/KJAFM.2015.17.4.358 인용 PDF KSCI