Polybrominated Diphenyl Ethers Accumulation in Dumpsites: A Threat to Environmental and Public Health

Abstract

The environmental and human health impacts of polybrominated diphenyl ethers (PBDEs), widely
used brominated flame retardants introduced in the 1970s to enhance fire resistance in consumer
goods such as electronics, textiles, and plastics is being reviewed. Due to their additive nature,
PBDEs are not chemically bonded to products, leading to their gradual release into air, water, soil,
and biota. The structure, persistence, and bioaccumulative properties of PBDEs were examined,
highlighting that lower-brominated congeners are more toxic and bioavailable. It explores how
improper e-waste disposal, landfill leachate, atmospheric deposition, and industrial activities
contribute to environmental contamination. Human exposure occurs primarily through ingestion,
inhalation, and dermal contact, with vulnerable populations including children, waste workers, and
residents near dumpsites. Health effects linked to PBDE exposure include endocrine disruption,
neurotoxicity, liver damage, and possible carcinogenicity. Regulatory efforts such as the
Stockholm Convention, EPA regulations, and the EU RoHS Directive have aimed to phase out
PBDE production and use, but legacy pollution persists due to the chemical stability and
widespread historical use of PBDEs. Municipal dumpsites are identified as major contamination
sources, and the paper highlights contamination pathways such as leachate infiltration, airborne
dispersion, and bioaccumulation in wildlife and ecosystems. Despite regulatory bans and phaseouts,
PBDEs remain present in the environment, necessitating continued monitoring, improved
waste management practices, development of safer alternatives, and targeted public health
strategies. This study emphasizes the ongoing need for international cooperation, stricter
enforcement, and remediation technologies to mitigate the enduring environmental and health
challenges posed by PBDE pollution.