• Title/Summary/Keyword: 청정재 확대

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Economic Growth and Renewable Resource: Specialization of Clean Activities

  • Hwang, Sanghyun
    • Environmental and Resource Economics Review
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    • v.21 no.3
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    • pp.627-681
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    • 2012
  • This paper starts with a model of monopolistic competition and endogenous growth, and it adds pollution as an input to production. Then I adopt environmental quality as a renewable resource used in production. I show that increasing returns due to specialization of clean activities as inputs can help lead to sustainable growth with no harm to environmental quality. I also compare and evaluate alternative policy combinations (i.e. taxes +subsidies) that correct two distortions from pollution and monopolistic competition. Finally, I find that, if the productivity of environment in final good production is not sufficiently enough, the number of clean goods tends to increase with more environmental concerns.

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Recent Research Trends for Green Building Thermal Insulation Materials (친환경 건축물 단열재 최근 연구 동향)

  • Park, Jong-Moon;Kim, Dong-Hwan;Suh, Dong-Jin
    • Clean Technology
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    • v.18 no.1
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    • pp.14-21
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    • 2012
  • The pros and cons of green building thermal insulation materials and systems have been reviewed from traditional thermal insulation materials such as mineral wool and polyurethane to new thermal insulation materials like VIP and aerogel and future insulating VIM and DIM. VIPs and aerogels with very low thermal conductivity can use for green buildings to significantly increase residential area by reducing energy consumption. Aerogels can be produced as not only opaque and but also translucent forms, thus enabling a wide range of possible building application. For building applications, there are many properties to consider like building site adaptability and mechanical strength, fire protection, cost and environmental impact.

Swine Wastewater Treatment by using Steel-making Slag (제강슬래그 특성을 이용한 축산폐수 처리효과)

  • Kim, Tae Heui;Park, Kyung Bong
    • Clean Technology
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    • v.6 no.2
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    • pp.85-92
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    • 2000
  • For increase of recycling rate of steel-making slag, the swine wastewater treatment using steel-making slag as filter media were investigated. As the discharged wastewater from the existing facilities retreated through the laboratory wastewater treatment equipment filled with steel-making slag as filter, pH of retreated wastewater was increased, and the concentration of N, P, COD and BOD were decreased. For the pilot experiment, steel-making slag eliminated suspended substances and absorbed a shock of sudden change of their concentration in influent. COD and BOD were decreased under the influence of them in influent. As calcination increased the amount of free-CaO in steel-making slag, the calcined eliminated phosphorus more effectively and increase pH than the uncalcined.

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Study of the Strategy of Establishment and Expansion of Green Port - the Case of Incheon Port - (녹색항만의 구축과 활성화 방안 -인천항의 사례를 중심으로-)

  • Kim, Hong-Seop
    • Journal of Korea Port Economic Association
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    • v.34 no.4
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    • pp.161-180
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    • 2018
  • Environmental value is essential to the survival and development of humans. Environmental value and its importance are being emphasized, and related disputes are being expanded. The concept of green logistics is understood to be the same as that of the environment. As a way to preserve nature and engage in sustainable development, green logistics includes all logistical activities for protecting nature and minimizing or reducing behaviors that harm the environment for all processes, including using and reusing products and abolishing the search for resources by final users. All areas of human activity, such as the political, economic, social, and cultural sectors, strive to protect and preserve the environment and nature. In particular, the preservation of the environment shall be stressed in the economic activities that produce various products and expand the value added, and similarly for the social aspects. Green (environment) logistics aims to protect the environment and expand the prevention of environmental destruction and minimization on Earth. Some important cases and experiences that were introduced and applied in major countries are summarized. This research reviewed previous studies and the concepts of green logistics, including at ports, which represent a key sector of logistical activities. In this paper, air and water pollution at Incheon Port were investigated, and alternatives and system figures related to improving environmental logistics regarding three dimensions-country, company, and civil society-are recommended.