期刊论文详细信息
JOURNAL OF CLEANER PRODUCTION 卷:262
Bromine removal from resin particles of crushed waste printed circuit boards by vacuum low-temperature heating
Article
Zhu, Jie1  Chen, Xi1  Zhao, Nan1  Wang, Wei3  Du, Jianwei3  Ruan, Jujun1  Xu, Zhenming2 
[1] Sun Yat Sen Univ, Sch Environm Sci & Engn, 135 Xingang Xi Rd, Guangzhou 510275, Peoples R China
[2] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
[3] South China Inst Environm Sci, MEE, 16-18 Ruihe Rd, Guangzhou, Peoples R China
关键词: Waste printed circuit boards;    Brominated flame retardants;    Low-temperature heating;    Debromination;    Intact resin;   
DOI  :  10.1016/j.jclepro.2020.121390
来源: Elsevier
PDF
【 摘 要 】

y Uncontrolled dumping and incineration of resin particles of waste printed circuit boards had caused serious pollution due to the contained brominated flame retardants. High-temperature vacuum pyrolysis was proposed to treat the resin particles. However, due to the generation of brominated gases and solid floc, high-temperature vacuum pyrolysis reproduced more hazardous wastes. In this paper, resin particles of crushed waste circuit board were processed by vacuum heating at the temperature of 300 degrees C and condensation at 180 degrees C. Resin particles were converted into residue and oil with the mass ratios 84.0 wt% and 16.0 wt% respectively. Content of organic bromine in residue was reduced to 0.082 wt%. Meanwhile, morphology of resin in residue was basically unchanged, which could be directly recycled as the filler for building materials. About 95.4 wt% of bromine in resin particles was transferred to oil. These results achieved the reduction of the hazardous wastes. Compared with the high-temperature vacuum pyrolysis, low-temperature heating not only reduce energy consumption, but also reduce the generation of toxic products. This paper might be the first time to report low-temperature heating of resin particles of waste printed circuit boards. This study contributed a novel technology to remove bromine from brominated substrates. (C) 2020 Elsevier Ltd. All rights reserved.

【 授权许可】

Free   

【 预 览 】
附件列表
Files Size Format View
10_1016_j_jclepro_2020_121390.pdf 1103KB PDF download
  文献评价指标  
  下载次数:0次 浏览次数:0次