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RISS 인기검색어
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- 저자 : Tuu Nguyen Thanh (검색결과 3 건)
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Flood Risk for Power Plant using the Hydraulic Model and Adaptation Strategy
Nguyen, Thanh Tuu,김승도,Van, Pham Dang Tri,임지재,유범식,김현경 한국기후변화학회 2017 한국기후변화학회지 Vol.8 No.4
This paper provides a mathematical approach for estimating flood risks due to the effects of climate change by developing a one dimensional (1D) hydraulic model for the mountainous river reaches located close to the Yeongwol thermal power plant. Input data for the model, including topographical data and river discharges measured every 10 minutes from July 1st to September 30th, 2013, were imported to a 1D hydraulic model. Climate change scenarios were estimated by referencing the climate change adaptation strategies of the government and historical information about the extreme flood event in 2006. The down stream boundary was determined as the friction slope, which is 0.001. The roughness coefficient of the main channels was determined to be 0.036. The results show the effectiveness of the riverbed widening strategy through the six flooding scenarios to reduce flood depth and flow velocity that impact on the power plant. In addition, the impact of upper Namhan River flow is more significant than Dong River.
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Van Cam Thi Le,Tuu Nguyen Thanh,강은실,윤소영,Hien Duy Mai,Mahshab Sheraz,한태욱,안진주,김승도 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.4
COVID-19 has drawn great attention on the necessity for establishing pathogen-free indoor air. This paperoffers an insight into the potential application of a multi-purpose filter to remove fine particulates and disinfect pathogensusing melamine sponge with a copper-organic framework. In-situ growth dip coating method was applied to coatCu-based coordination polymer particle (Cu-CPP) on melamine sponge (MS). The integration of Cu-CPPs with highcrystallinity and highly active surface area (1,318.1m2/g) enabled Cu-CPP/MS to have an excellent capture rate (99.66%)and an instant disinfection rate of 99.54% for Escherichia coli. Electrostatic attraction seemed to play a crucial role incapturing negative-charged pathogens effectively by positive charges on Cu-CPP arising from unbalanced copper ionsin Cu-CPP. Disinfection of pathogens was mainly attributed to catalytically active Cu2+ sites. Organic ligand played animportant role in bridging and maintaining Cu2+ ions within the framework. This study highlights the design of a newcapture-and-disinfection (CDS) air filter system for pathogens using Cu-CPP/MS. It can be applied as a substitute forconventional high-efficiency particulate air (HEPA) filters.
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Prediction of greenhouse gas emission from municipal solid waste for South Korea
Kanchan Popli,Jeejae Lim,Hyeon Kyeong Kim,Young Min Kim,Nguyen Thanh Tuu,Seungdo Kim 대한환경공학회 2020 Environmental Engineering Research Vol.25 No.4
This study is proposing a System Dynamics Model for estimating Greenhouse Gas (GHG) emission from treating Municipal Solid Waste (MSW) in South Korea for years 2000 to 2030. The government of country decided to decrease the total GHG emission from waste sector in 2030 as per Business-as-usual level. In context, four scenarios are generated to predict GHG emission from treating the MSW with three processes i.e., landfill, incineration and recycling. For prior step, MSW generation rate is projected for present and future case using population and waste generation per capita data. It is found that population and total MSW are directly correlated. The total population will increase to 56.27 million and total MSW will be 21.59 million tons in 2030. The methods for estimating GHG emission from landfill, incineration and recycling are adopted from IPCC, 2006 guidelines. The study indicates that Scenario 2 is best to adopt for decreasing the total GHG emission in future where recycling waste is increased to 75% and landfill waste is decreased to 7.6%. Lastly, it is concluded that choosing proper method for treating the MSW in country can result into savings of GHG emission.
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