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      • KCI등재

        A Review of Solid Waste Management using System Dynamics Modeling

        ( Kanchan Popli ),( Gamal Luckman Sudibya ),( Seungdo Kim ) 한국환경과학회 2017 한국환경과학회지 Vol.26 No.10

        Solid waste management is currently a topic of concern, particularly in the protection of humans and the environment from toxic pollutants and hazardous materials. The importance of solid waste management is recognized at international, national, and community levels. Different agendas have been prioritized and assigned to improve quality of life, productivity, and health, and reduce the burden of pollution. Suitable management of solid waste requires appropriate technology that is affordable, socially accepted, and environmentally friendly. The use of a smart management system involving system dynamics can save energy, money, and labor. System dynamics is a computer-based approach that aids in predicting the behavioral patterns of variables, and correlating dependent and independent variables. The inclusion of system dynamics-based models in solid waste management has recently become more common. In this review, we used system dynamics to determine methods to disentangle solid waste management systems and analyzed different studies on solid waste management using system dynamics in different countries in detail. We also discussed the various software packages that are available for system dynamics and their usefulness for waste management. This review may help in understanding current solid waste management practices using system dynamics.

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        Catalytic conversion of 1,1,1,2-tetrafluoroethane (HFC-134a)

        한태욱,유범식,김영민,황병아,Gamal Luckman Sudibya,박영권,김승도 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.8

        We examined the conversion of HFC-134a over five catalysts, Na2CO3, CaO, CaCO3, and two types of - Al2O3 with different surface areas, between 300 and 600 oC. HFC-134a was barely converted via the non-catalytic reaction, even at the highest temperature (600 oC). The operating temperatures for the catalytic conversion of HFC-134a were reduced dramatically and its efficiency increased with increasing temperature. Among the catalysts used, -Al2O3 with the larger surface area showed the highest conversion rate of HFC-134a, which was followed, in order, by -Al2O3 with the smaller surface area, CaCO3, CaO, and Na2CO3. The conversion rate of -Al2O3 decreased rapidly due to catalyst deactivation. The catalytic efficiency of -Al2O3 was maintained for a longer period by water addition. Water acted as a hydrogen donor for the dehydrofluorination reaction.

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