Chemical Hazards Associated with Treatment of Waste Electrical and Electronic Equipment

Send us Fan Mail This academic review paper, authored by Oyuna Tsydenova and Magnus Bengtsson (Waste Management, 2011), provides a comprehensive evaluation of the toxic chemical risks and environmental hazards connected to the end-of-life processing of electronic waste (e-waste). Key focus areas covered in the source include: Toxic Chemical Profile: Identifies major hazardous substances embedded in consumer electronics, including heavy metals (lead, mercury, cadmium, chromium, antimony, beryllium) and brominated flame retardants (BFRs) such as polybrominated diphenyl ethers (PBDEs) and tetrabromobisphenol-A (TBBPA). Treatment & Disposal Methods: Analyzes chemical releases and workplace risks across three primary disposal pathways: recycling (mechanical shredding, pyrometallurgical smelting, and hydrometallurgical processing), incineration, and landfilling. Developed vs. Developing Nations: Contrasts formal, mechanized recycling systems governed by Extended Producer Responsibility (EPR) in developed countries with rudimentary, unregulated informal practices in developing regions (such as Guiyu, China; New Delhi, India; and Accra, Ghana). Environmental & Occupational Health Impacts: Details severe workplace contamination and human exposure resulting from informal practices like open cable burning, manual CRT dismantling, and open-air acid leaching—leading to elevated heavy metal and dioxin levels in air, soil, surface waters, blood, and umbilical cord tissue. Policy & Knowledge Gaps: Examines global trade dynamics under the Basel Convention and the EU RoHS Directive, highlighting critical research gaps in workplace safety guidelines and environmental monitoring. Support the show