Sustainable Engineering of Recycling Process of used Liquid Crystal Displays

• Main Authors: Heng-ling,Yang, 楊惠玲
• Other Authors: CHEN,LI
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/35891734322334576404

碩士 === 中華大學 === 土木工程學系碩士在職專班 === 101 === Liquid Crystal Displays (LCD) became popular since the end of 20th century and has been widely used in various kinds of electronic devices. After more than one decade vigorous market booming, the amount of used waste LCDs has emerged to a big volume and will keep growing. There are several different kinds of valuable metals in LCD displays, which are worthy to be recycled. Meanwhile, the demand to exploit natural minerals can be reduced as well. This study uses UNISON framework to structure the assessment dimensions, analyze the existing main stream recycling process and compare with the newly emerged recycling techniques to formulate the best suitable LCD displays recycling strategy. The research results indicate that highest proportion of valuable metals can be recycled and no extra energy input required during the process by using “Metallurgy” method. The intrinsic heat value of LCD plastic components is sufficient to provide heat energy to burn out waste glasses. The Metallurgy recycling process covers both the advantage of less CO2 emission and waste reduction. This method conforms to the demand of earth sustainability and is worthy for the government and industries to closely watch its further development