We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Elimination of microplastic from soil by pyrolysis and potential hazard analysis: Effects of pyrolysis temperature and holding time
AI summary Read the abstract
Pyrolysis experiments on soil spiked with microplastics found that burning at temperatures above 400°C can effectively destroy the plastic particles, and that the soil matrix actually improved pyrolysis outcomes compared to burning pure plastic, while also reducing polycyclic aromatic hydrocarbon byproducts. This points to pyrolysis as a potentially viable remediation strategy for microplastic-contaminated soils, though optimizing temperature and timing remains important.
Abstract Efficient and harmless treatment of microplastics in soil is the current focus of microplastic pollution management. In this study, the pyrolysis effect of soil microplastics at different temperatures and holding times was analyzed. The results showed that temperature and holding time significantly affected the morphology and compositional structure of soil. Pure microplastics and product adhesion after pyrolysis at low temperature (400°C) were not easy to remove. Interestingly, compared with pure polyethylene (PE), direct pyrolysis of microplastics in soil could obtain better results, and the content of organic matter and polycyclic aromatic hydrocarbons (PAH) could be significantly reduced. However, the pyrolysis performance was very unsatisfactory even if the action time was prolonged at 400°C. Prolonged high‐temperature treatment accelerated the fragmentation of the alkane main chain of PE, thus generating more PAH, and the temperature was not high enough (400°C) for further effective degradation of PAH into carbon dioxide and water. Therefore, higher temperature and longer holding time need to be selected to ensure the pyrolysis performance. This study revealed the role and mechanism of pyrolysis in soil microplastic mixed systems, aiming to provide a basis for the treatment of microplastics in terrestrial ecosystems.
More Papers Like This
Vital Threshold and Underlying Mechanism for the Complete Remediation of Oil and Microplastic Co-Contaminated Soil by Fast Pyrolysis
AI summary Read the abstract
Researchers developed a fast pyrolysis technique to remediate soils co-contaminated with microplastics and oil pollutants near oil-production regions, identifying a vital temperature threshold that achieves complete remediation of combined pollutants in a cost-effective single-step process.
Microplastics Mitigation in Sewage Sludge through Pyrolysis: The Role of Pyrolysis Temperature
AI summary Read the abstract
The effect of pyrolysis on reducing microplastic content in sewage sludge was investigated in a lab-scale study evaluating multiple pyrolysis temperature conditions. Pyrolysis effectively degraded microplastic particles in sludge, with higher temperatures achieving greater microplastic reduction, positioning pyrolysis as a viable treatment for managing microplastic-laden organic waste.
Fate of microplastic during pyrolysis of sewage sludge
AI summary Read the abstract
Researchers investigated what happens to microplastics embedded in sewage sludge when sludge is treated by pyrolysis, a high-temperature thermochemical process. Pyrolysis effectively destroyed most microplastic particles, but some residual polymer-derived compounds partitioned into the pyrolysis products.
Analysis of microplastics in soil samples by using a thermal decomposition method
AI summary Read the abstract
Researchers tested thermal decomposition as a method for extracting and identifying microplastics in soil samples, a particularly challenging matrix because organic matter interferes with optical detection methods. The approach showed promise for detecting and quantifying plastic content in complex soil environments.
Biochar alters chemical and microbial properties of microplastic-contaminated soil
AI summary Read the abstract
Researchers found that biochar amendments improved chemical and microbial properties of microplastic-contaminated soil, with effects varying by biochar type and water conditions, suggesting biochar as a potential remediation tool for plastic-polluted agricultural soils.
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.