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作者:

Yin, Xiaofei (Yin, Xiaofei.) | Yu, Jiamei (Yu, Jiamei.) | Wu, Yufeng (Wu, Yufeng.) (学者:吴玉锋) | Tian, Xiangmiao (Tian, Xiangmiao.) | Wang, Wei (Wang, Wei.) (学者:王伟) | Zhang, Yi-Nan (Zhang, Yi-Nan.) | Zuo, Tieyong (Zuo, Tieyong.) (学者:左铁镛)

收录:

EI Scopus SCIE

摘要:

In this paper, we propose a novel and sustainable process for recycling rare earths (REs) and zinc (Zn) simultaneously from waste cathode ray tube (CRT) phosphors. First, 95% of the impurities such as glass cullets and aluminum foils are removed by simple screening. Then, a self propagating, high-temperature synthesis reaction following a water-leaching process is performed to recycle Zn selectively. The REs are recycled by a combined process of oxidative leaching and ionic-liquid-based extraction. They are then regenerated to form a new Y2O3:Eu3+ phosphor. By following this green recycling design, the recovery efficiencies of REs and Zn reach 99.5% and 99%, respectively. The negative bivalent sulfur in ZnS and Y2O3:Eu3+ is converted completely to SO42-, which efficiently avoids the secondary pollution. It should also be pointed out that the main recovery processes are all carried out at room temperature, and the "three wastes" emissions are minimized throughout the process. This work is expected to open new avenues for highly efficient, energy-saving, and pollution reducing recovery processes for waste CRT phosphors.

关键词:

Rare earths Recycling SHS Sustainable design Waste CRT phosphor Zn

作者机构:

  • [ 1 ] [Yin, Xiaofei]Beijing Univ Technol, Inst Circular Econ, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 2 ] [Yu, Jiamei]Beijing Univ Technol, Inst Circular Econ, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 3 ] [Wu, Yufeng]Beijing Univ Technol, Inst Circular Econ, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 4 ] [Wang, Wei]Beijing Univ Technol, Inst Circular Econ, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 5 ] [Zuo, Tieyong]Beijing Univ Technol, Inst Circular Econ, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 6 ] [Yin, Xiaofei]Beijing Univ Technol, Inst Beijing Tianjin Hebei Green Dev, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 7 ] [Yu, Jiamei]Beijing Univ Technol, Inst Beijing Tianjin Hebei Green Dev, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 8 ] [Wu, Yufeng]Beijing Univ Technol, Inst Beijing Tianjin Hebei Green Dev, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 9 ] [Wang, Wei]Beijing Univ Technol, Inst Beijing Tianjin Hebei Green Dev, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 10 ] [Zuo, Tieyong]Beijing Univ Technol, Inst Beijing Tianjin Hebei Green Dev, 100 Pingleyuan St, Beijing 100124, Peoples R China
  • [ 11 ] [Tian, Xiangmiao]Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China
  • [ 12 ] [Zhang, Yi-Nan]Univ Toronto, Inst Biomat & Biomed Engn, Toronto, ON M5S 3G9, Canada

通讯作者信息:

  • 吴玉锋

    [Wu, Yufeng]Beijing Univ Technol, Inst Circular Econ, 100 Pingleyuan St, Beijing 100124, Peoples R China;;[Wu, Yufeng]Beijing Univ Technol, Inst Beijing Tianjin Hebei Green Dev, 100 Pingleyuan St, Beijing 100124, Peoples R China

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来源 :

ACS SUSTAINABLE CHEMISTRY & ENGINEERING

ISSN: 2168-0485

年份: 2018

期: 3

卷: 6

页码: 4321-4329

8 . 4 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:98

JCR分区:1

被引次数:

WoS核心集被引频次: 5

SCOPUS被引频次: 6

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

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