title: Recent development of recycling lead from scrap CRTs: A technological review.
abstract: Cathode ray tubes (CRTs) contain numerous harmful substances with different functions. Lead is found in the funnel glass of CRTs. Improperly treated toxic lead may pose significant risks to human health and the environment. This paper reviews and summarizes existing technological processes on the recycling of lead from waste CRTs, including pyrometallurgy, hydrometallurgy, and product-regeneration. The present situation, advantages, and disadvantages of these techniques are described in detail. Generally, pyrometallurgy shows better practicability in recovery lead from waste CRT than hydrometallurgy and hydrometallurgy, in view of environmental impact, energy-consumption, product formats and safety and maturity of technology. Moreover, the gaps in the existing technologies were identified and recommendations for future research were provided.
authors.affiliation: Institute of Recycling Economy, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing 100124, PR China.
authors.lastname: Yu-Gong
authors.affiliation: Institute of Recycling Economy, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing 100124, PR China.
authors.forename: Xiang-Miao
authors.initials: XM
authors.lastname: Tian
authors.affiliation: Institute of Recycling Economy, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing 100124, PR China. Electronic address: xunhuan3r@126.com.
authors.forename: Yu-Feng
authors.initials: YF
authors.lastname: Wu
authors.affiliation: Institute of Recycling Economy, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing 100124, PR China.
authors.lastname: Zhe-Tan
authors.affiliation: Institute of Recycling Economy, Beijing University of Technology, No. 100, Pingleyuan Street, Chaoyang District, Beijing 100124, PR China.
authors.lastname: Lei-Lv
mesh_terms: D055984:Cathode Ray Tube; D003252:Construction Materials; D059029:Electronic Waste; D004777:Environment; D005898:Glass; D007834:Lasers; D007854:Lead / Q000302:isolation & purification; D008669:Metallurgy / Q000379:methods; D053758:Nanoparticles; D059027:Recycling / Q000379:methods*
chemical_list: D007854:Lead
keywords: CRT; Funnel glass; Hydrometallurgical; Lead; Pyrometallurgical