Fate and migration of polybrominated diphenyl ethers in a workshop for waste printed circuit board de-soldering

Guo, Jie; Patton, Luorong; Wang, Jianbo; Xu, Zhenming

doi:10.1007/s11356-019-06735-1

Cited by 5 publications

(3 citation statements)

References 47 publications

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“…This indicated that the internal bond was changed, the strength of the bonding bond weakened, and the particles easily crushed. 41 The functional group at 2964.14 cm –1 was the asymmetric stretching vibration absorption peak of the C–H bond in the −CH 3 group. After pretreatment, the functional group disappeared, which indicated that the high temperature reaction occurring during the microwave pretreatment process caused the pyrolysis of the non-metallic organic epoxy resin in WPCB.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Microwave Pretreatment on the Leaching and Enrichment Effect of Copper in Waste Printed Circuit Boards

Huang

et al. 2023

ACS Omega

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The use of efficient and clean methods for the recycling of waste circuit boards is an ongoing challenge. In this research, the effect of microwave pretreatment on the leaching and enrichment of copper from waste print circuit board (WPCB) was studied. The morphology and chemical structure of WPCB particles before and after microwave pretreatment were analyzed by SEM/EDS and Fourier infrared spectroscopy. Leaching experiments and copper enrichment tests were designed to investigate the effect of different microwave irradiation powers and microwave irradiation times on the copper leaching rate and copper enrichment rate in WPCB. The leaching experiment results showed that microwave pretreatment can effectively improve the leaching rate of WPCB. When the microwave irradiation power was 700 W, the irradiation time was 120 s, and the leaching time was 15 min, the copper leaching rate in WPCB was 57.01%, which was 24.34% higher than that in the untreated condition. The results of copper enrichment experiment show that microwave pretreatment can effectively improve the copper enrichment of WPCB. After microwave pretreatment, copper was effectively enriched in the 4–2 and 2–1 mm particle sizes. When the microwave irradiation time was 120 s, the copper enrichment rates in the 4–2 and 2–1 mm particle sizes were 1.74 and 1.66, which increased by 0.63 and 0.32, respectively, compared to the untreated condition. Microwave pretreatment enables the effective separation of metallic copper from non-metallic components in WPCB, increasing the exposure area of copper and promoting the monomer separation of copper, thus improving the leaching and enrichment of copper.

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Section: Resultsmentioning

confidence: 99%

“…The intensity of the infrared spectrum peaks was weakened after pretreatment. This indicated that the internal bond was changed, the strength of the bonding bond weakened, and the particles easily crushed . The functional group at 2964.14 cm –1 was the asymmetric stretching vibration absorption peak of the C–H bond in the −CH 3 group.…”

Section: Resultsmentioning

confidence: 99%

Effect of Microwave Pretreatment on the Leaching and Enrichment Effect of Copper in Waste Printed Circuit Boards

Huang

et al. 2023

ACS Omega

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“…The authors shown in Table 10 cover only 3.91% of the total, and the remaining 96.9% (corresponding to 366 authors) includes all who have published fewer than 3 articles. Jie Guo focused his investigations in China and mainly investigated the recycling and disposal processes of electrical waste, including televisions and printed circuit boards [121][122][123][124]. The keywords most used in his articles are risk assessment, particle pollution, recycling process, electronic waste, fumes, particulate matter, thermal degradation, pollution emission, pollution control, and PBDEs.…”

Section: Authorsmentioning

confidence: 99%

A Bibliographic Analysis of Indoor Air Quality (IAQ) in Industrial Environments

et al. 2022

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Air pollution is a major risk factor, and it still remains a global cause of death for millions of people. Indoor air quality (IAQ) plays an important role in human health as people spend most of their time in confined spaces. Many studies have recently addressed this issue, but no systematic analysis has been conducted, which is the aim of our study. We present a bibliographic analysis of articles on IAQ in industrial environments from 2010 to 2021. A total of 658 articles were collected, and 409 were used. The NVivo tool was used to analyze the collected documents both quantitatively and qualitatively. This analysis of the literature enables us to identify the most studied working environments and pollutants, the analysis tools, and the types of measurement used to provide a clear overview of the theme, which includes a comparison between the studied working environments and the state of origin of the authors. Our analysis of each working environment and the related frequently cited pollutants provides a clear approach to identifying the specific areas of focus when improving the quality of the air in a specific working environment. In addition, a research gap and future research areas have been identified in the conclusions.

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Exposure evaluation and risk assessment of polybrominated diphenyl ethers in dust from microenvironments in Nsukka, Nigeria

Ibeto

Aju

Imafidon

et al. 2021

Environ Sci Pollut Res

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Fate and migration of polybrominated diphenyl ethers in a workshop for waste printed circuit board de-soldering

Cited by 5 publications

References 47 publications

Effect of Microwave Pretreatment on the Leaching and Enrichment Effect of Copper in Waste Printed Circuit Boards

Effect of Microwave Pretreatment on the Leaching and Enrichment Effect of Copper in Waste Printed Circuit Boards

A Bibliographic Analysis of Indoor Air Quality (IAQ) in Industrial Environments

Exposure evaluation and risk assessment of polybrominated diphenyl ethers in dust from microenvironments in Nsukka, Nigeria

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