Abstract
The garbage generated from our modern lifestyles undergoes intermediate treatment such as incineration, etc. and is then landfilled at waste disposal sites. Often, various substances, including POPs and others, can be accumulating at these sites and may be detected in landfill leachates over the long term. As a result of this study, PFASs, including PFOA and PFOS, have been detected in the order of thousands of ng/L from landfill leachates and concentrations for HBCD and HCBD measured about two orders magnitude lower than those of PFASs. Notably, the concentrations of PCNs in landfill leachates is still unclear. Some reports suggest that activated carbon adsorptions, photocatalysis and high-pressure membranes treatments are effective in removing PFASs from water samples. Insufficient knowledge regarding concentration of POPs and their reduction during the treatment process in landfill leachates suggests that further research, with monitoring and prediction models for landfill fields, is still required.
