We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Long-Term Polyethylene (Bio)Degradation in Landfill: Environmental and Human Health Implications from Comprehensive Analysis
AI summary Read the abstract
Researchers studied the long-term degradation of polyethylene in an old municipal landfill and found that the breakdown process released hazardous organic compounds and heavy metals into surrounding soil. Toxicological tests showed significant harm to living organisms in contaminated samples, raising concerns about pollutant migration from aging plastic waste in older landfill sites.
This study investigates the process of long-term (bio)degradation of polyethylene (PE) in an old municipal waste landfill (MWL) and its implications for environmental and human health. Advanced techniques, such as ICP-ES/MS and IC-LC, were used to analyze heavy metals and anions/cations, demonstrating significant concentration deviations from control samples. The soil's chemical composition revealed numerous hazardous organic compounds, further indicating the migration of additives from PE to the soil. Toxicological assessments, including Phytotoxkit FTM, Microtox® bioassay, and Ostracodtoxkit®, demonstrated phytotoxicity, acute toxicity, and high mortality in living organisms (over 85% for Heterocypris Incongruens). An unusual concentration of contaminants in the MWL's middle layers, linked to Poland's economic changes during the 1980s and 1990s, suggests increased risks of pollutant migration, posing additional environmental and health threats. Moreover, the infiltration capability of microorganisms, including pathogens, into PE structures raises concerns about potential groundwater contamination through the landfill bottom. This research underscores the need for vigilant management and updated strategies to protect the environment and public health, particularly in older landfill sites.
More Papers Like This
Degradation of excavated polyethylene and polypropylene waste from landfill
AI summary Read the abstract
Researchers examined plastic waste (polyethylene and polypropylene) dug up from landfills and found that plastics buried for more than 10 years showed significant chemical and structural changes, including higher oxidation levels and increased crystallinity. Their findings suggest that converting old landfill plastic into pyrolysis oil is a better recycling option than mechanical reprocessing for heavily degraded material.
Influence of aged and pristine polyethylene microplastics on bioavailability of three heavy metals in soil: Toxic effects to earthworms (Eisenia fetida)
AI summary Read the abstract
Researchers studied how aging affects the ability of polyethylene microplastics to influence the bioavailability of zinc, lead, and cadmium in soil, and the resulting toxicity to earthworms. The study found that aged microplastics had different adsorption properties for heavy metals compared to pristine particles, which altered the bioavailability of these metals and affected earthworm health differently depending on microplastic concentration and aging status.
Microplastics in Landfill Bodies: Abundance, Spatial Distribution and Effect of Landfill Age
AI summary Read the abstract
Researchers examined microplastic distribution in landfill refuse across different age sections, finding that older landfill areas contain higher microplastic abundances, demonstrating that plastic waste progressively fragments into microplastics during long-term burial.
The evolution and fate of waste plastics in landfills subject to physical and biochemical processes - implications for microplastics
AI summary Read the abstract
This review examines how plastic waste in landfills is physically and biochemically transformed over time, with a focus on the conditions that generate microplastics from buried macroplastics. The authors explore implications for microplastic leaching and environmental contamination from landfill sites.
Impacts of polyethylene microplastics on bioavailability and toxicity of metals in soil
AI summary Read the abstract
Researchers studied how polyethylene microplastics affect the bioavailability and toxicity of copper and nickel in soil using earthworms as test organisms. They found that adding microplastics to contaminated soil increased the bioavailability of the metals and enhanced their toxic effects on the earthworms. The study suggests that microplastics in soil can worsen heavy metal pollution by making metals more accessible and harmful to soil-dwelling organisms.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.