Assessment of Noise and Heavy Metals (Cr, Cu, Cd, Pb) in the Ambience of the Production Line for Recycling Waste Printed Circuit Boards
- 29 November 2011
- journal article
- Published by American Chemical Society (ACS) in Environmental Science & Technology
- Vol. 46 (1), 494-499
- https://doi.org/10.1021/es202513b
Abstract
The crush - pneumatic separation - corona electrostatic separation production line provides a feasible method for industrialization of waste printed circuit boards (PCBs) recycling. To determine the potential environmental contamination in the automatic line workshop, noise and heavy metals (Cr, Cu, Cd, Pb) in the ambience of the production line have been evaluated in this paper. The mean noise level in the workshop has been reduced from 96.4 to 79.3 dB since the engineering noise control measures were employed. Noise whose frequency ranged from 500 to 1000 Hz is controlled effectively. The mass concentrations of TSP and PM10 in the workshop are 282.6 and 202.0 μg/m3, respectively. Pb (1.40 μg/m3) and Cu (1.22 μg/m3) are the most enriched metals in TSP samples followed by Cr (0.17 μg/m3) and Cd (0.028 μg/m3). The concentrations of Cu, Pb, Cr, and Cd in PM10 are 0.88, 0.56, 0.12, and 0.88 μg/m3, respectively. Among the four metals, Cr and Pb are released into the ambience of the automatic line more easily in the crush and separation process. Health risk assessment shows that noncancerous effects might be possible for Pb (HI = 1.45), and noncancerous effects are unlikely for Cr, Cu, and Cd. The carcinogenic risks for Cr and Cd are 3.29 × 10–8 and 1.61 × 10–9, respectively. It indicates that carcinogenic risks on workers are relatively light in the workshop. These findings suggest that this technology is advanced from the perspective of environmental protection in the waste PCBs recycling industry.Keywords
This publication has 18 references indexed in Scilit:
- Environmental Friendly Automatic Line for Recovering Metal from Waste Printed Circuit BoardsEnvironmental Science & Technology, 2010
- E-waste: An assessment of global production and environmental impactsScience of The Total Environment, 2009
- Recycling of waste printed circuit boards: A review of current technologies and treatment status in ChinaJournal of Hazardous Materials, 2009
- Law Enforcement and Global Collaboration are the Keys to Containing E-Waste Tsunami in ChinaEnvironmental Science & Technology, 2009
- Hearing conservation programs in selected metal fabrication industriesApplied Acoustics, 2008
- Identification of Ah Receptor Agonists in Soil of E-waste Recycling Sites from Taizhou Area in ChinaEnvironmental Science & Technology, 2007
- Recycle Technology for Recovering Resources and Products from Waste Printed Circuit BoardsEnvironmental Science & Technology, 2007
- Occupational exposure to noise, and hearing function among electro production workersAuris Nasus Larynx, 2006
- Evaluation and analysis of the environmental noise of Messina, ItalyApplied Acoustics, 2005
- Occupational noise exposure and hearing loss of workers in two plants in eastern Saudi ArabiaThe Annals of Occupational Hygiene, 2001