globalchange  > 气候变化与战略
DOI: 10.1016/j.atmosenv.2020.117402
论文题名:
Emission characteristics of polybrominated diphenyl ethers from the thermal disassembly of waste printed circuit boards
作者: Tan S.; Chen Z.; Wang R.; Guo J.; Xu Z.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 226
语种: 英语
英文关键词: Electronic equipment ; Ethers ; Machine components ; Network components ; Organic carbon ; Particle size ; Particle size analysis ; Particles (particulate matter) ; Pollution control ; Printed circuit boards ; Timing circuits ; Emission factors ; Particulate PBDEs ; Polybrominated diphenyl ether (PBDEs) ; Thermal disassembly ; Waste printed circuit board ; Organic pollutants ; carbon ; organic carbon ; polybrominated diphenyl ether ; concentration (composition) ; electronic waste ; particle size ; particulate matter ; PBDE ; recycling ; temperature ; air pollutant ; Article ; e-waste ; heating ; particle size ; particulate matter ; powder ; priority journal ; quantitative analysis ; recycling ; temperature stress ; waste printed circuit board
学科: Emission factors ; Particulate PBDEs ; Polybrominated diphenyl ethers (PBDEs) ; Thermal disassembly ; Waste printed circuit boards
中文摘要: Thermal disassembly is prevalently applied for the removal of electronic components on waste printed circuit boards (WPCBs), and temperature is an important factor influencing the pollutant emission process. The emission characteristics of polybrominated diphenyl ethers (PBDEs) to the environment under thermal stress were investigated by conducting both bench-scale experiments and pilot-scale experiments over a temperature range from 100 to 260 °C. Bench-scale experiments showed that the emission factors (EFs) for ∑39PBDEs from WPCB powder were obviously higher than those from WPCB fragments. Mono-to tri-BDEs predominated the PBDEs emission at each temperature, and the EFs for the mono-to tri-BDEs from WPCB powder ranged from 232 to 3280 ng/g, respectively. Pilot-scale experiments were done to study the particulate matter (PM) and PBDEs emitted from WPCBs mounted with electronic components using a thermal disassembly machine. The mass of the PM and PBDEs released from WPCBs during heating increased with increasing temperature. A bimodal distribution pattern for the PM with peaks at diameters of 0.4–0.7 and 5.8–9.0 μm was observed. The values of the EFs for ∑39PBDEs varied from 6.41 to 674 ng/g, which were comparable with those calculated from WPCB fragments in the bench-scale experiments. The mass distribution of the ∑39PBDEs in the PM predominated in the size fraction of >9.0 μm and 0.7–1.1 μm at 100 and 260 °C, respectively. The highly brominated PBDEs (hexa- and hepta-BDEs) had a mass median aerodynamic diameter (MMAD) greater than 2.5 μm, while the lightly brominated PBDEs (mono-to penta-BDEs) were mainly distributed in finer particles, with a MMAD of less than 2.5 μm. The particle size distribution of PBDEs was significantly correlated with the distribution of organic carbon (OC) in PM. All these results can provide basic data for gas pollution related to PBDEs and its control for electronic waste recycling. © 2020 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160862
Appears in Collections:气候变化与战略

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作者单位: School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China; Guangdong Provincial Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 510632, China

Recommended Citation:
Tan S.,Chen Z.,Wang R.,et al. Emission characteristics of polybrominated diphenyl ethers from the thermal disassembly of waste printed circuit boards[J]. Atmospheric Environment,2020-01-01,226
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