• Title/Summary/Keyword: reycling

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A Study on Influencing Factors of Reuse of Waste Electrical and Electronic Equipment Reverse Logistics Service in China (중국 폐기 전기·전자기기 역물류 서비스 재사용에 미치는 영향요인에 관한 연구)

  • Jian-Hao Zhang;Jun-Seung Kim;Keun-Sik Park
    • Korea Trade Review
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    • v.46 no.5
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    • pp.213-230
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    • 2021
  • China's e-waste enterprises can decompose 150 million sets of e-waste every year, but in fact, only about 50% of the e-waste goes into formal recycling due to the informal recycling of individual small businesses. The purpose of this paper is to put forward the method for users to improve the reuse times through regular e-waste recycling enterprises. This paper constructs the evaluation factors of reuse logistics service through prior research. Exogenous variables are mainly composed of the management system, economics, resources, policies, social perspectives, and service quality. In addition, the authors choose intention to reuse as an endogenous variable. A total of 335 questionnaires were collected to conduct the research with the structural equation modeling. The results reject the hypothesis that economics, resources, and social perspectives have a positive impact on reuse. On the contrary, management systems, policies, and service quality have a positive impact on reuse. Implications were suggested in the last part of the research.

Current Status of Nickel Smelting Technology (니켈 제련기술의 현황)

  • Sohn, Ho-Sang
    • Resources Recycling
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    • v.30 no.2
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    • pp.3-13
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    • 2021
  • Nickel is widely used due to its excellent toughness, malleability and enhanced corrosion resistance. Therefore, nickel is indispensable in our daily lives, and it is widely used in basic to advanced applications such as stainless steel, super alloys and electronic devices. Recently, nickel has been widely used as the major material in secondary batteries and capacitors. The use of nickel continues to rise and has increased from 800 thousand tonnes per year worldwide in the 1970s to about 2 million tonnes in the 2010s. However, nickel is a representative rare metal and ranks 23rd among the abundant elements in the earth's crust. This study reviews the current status of the nickel smelting processes as well as the trend in production amount and use. Nickel is extracted by a wide variety of smelting methods depending on the type of ore. These smelting methods are essential for the development of new recycling processes that can extract nickel from secondary nickel resources.