We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Removal of Cellulose to Facilitate Microplastics Detection in Wastewater
AI summary Read the abstract
Scientists have developed a fast, effective way to strip cellulose (like tiny cotton or paper fibers) out of wastewater samples, which previously made it hard to accurately count and identify microplastics without damaging them. Using a chemical solution called CED, researchers removed nearly all the cellulose while keeping plastic particles intact, revealing that wastewater contains far more microplastics, mostly from PET plastic, than earlier methods could detect. This matters because accurately measuring microplastics in our water supply is a critical first step to understanding how much of this pollution we may be exposed to and how to reduce it.
Abstract The presence of cellulose in wastewater can hinder the detection of microplastics (MPs) or lead to their misidentification as MPs. Existing digestion protocols, such as H2O2, are often ineffective for removing cellulosic components of organic matter. This study examined the isolation of cellulose from microplastics in wastewater using cupriethylenediamine (CED). Cellulosic materials, including cotton balls, hygienic paper, and paper rolls, were used to simulate wastewater cellulose matrices and treated with CED (0.1, 0.3, and 0.5 M) at 22 °C over varying contact times. The optimal CED condition was evaluated for its impact on microplastics (PET, PS, and PA) and applied to influent wastewater. The optimal CED (0.3 M) removed up to 100% of the cellulosic products and preserved microplastic integrity, as confirmed by 100% weight recovery, unchanged morphology from scanning electron microscopy (SEM) validated with ImageJ, and a stable carbonyl index from Fourier-transform infrared spectroscopy. Further, 0.3 M CED at 30 min isolated MPs from wastewater samples masked by cellulose, achieving 98% cellulose removal and enabling the detection of several microplastics ranging in size from 71 to 3176 μm, with PET as the predominant MPs. This work presents a rapid approach for removing cellulose, facilitating microplastics detection in wastewater.
More Papers Like This
Removal of Microplastics from Wastewater
AI summary Read the abstract
Researchers reviewed how sewage treatment plants both trap and release microplastics into the environment, finding that modern treatment technologies can significantly reduce the amount of plastic particles discharged — though plants remain a key pathway for microplastics to reach waterways.
Removal of Microplastics from Wastewater
AI summary Read the abstract
Wastewater treatment plants act as both a sink and a source for microplastics, capturing large fractions but still releasing significant quantities into receiving water bodies and concentrating particles in sewage sludge spread on agricultural land. Improving removal technologies at treatment plants is one of the most impactful intervention points for reducing microplastic flux into downstream environments.
Navigating Microplastic Challenges: Separation and Detection Strategies in Wastewater Treatment
AI summary Read the abstract
This review analyzes the separation and detection strategies used within wastewater treatment plants to address microplastic pollution, highlighting the technical limitations that allow substantial amounts of microplastics to pass through into receiving water bodies. Because wastewater treatment plants are the last line of defense before microplastics enter rivers, lakes, and ultimately drinking water, improving their removal efficiency is directly linked to reducing human microplastic exposure.
Principles and Methods for the Removal of Microplastics in Wastewater
AI summary Read the abstract
Researchers reviewed the principles and methods used to remove microplastics from wastewater, evaluating the effectiveness of treatment approaches across domestic, industrial, and environmental discharge scenarios. Because wastewater treatment plants are a key pathway for microplastics entering aquatic environments, improving removal efficiencies is critical to reducing the downstream human and ecological exposure burden.
Removal of Microplastic from Wastewater Treatment Plants
AI summary Read the abstract
This review evaluated stage-by-stage microplastic removal efficiencies across wastewater treatment plant unit processes — including screening, sedimentation, biological treatment, and tertiary filtration — and assessed emerging innovations such as membrane bioreactors and advanced oxidation to improve removal rates beyond current averages of 70–99%. Because treated wastewater effluent is a primary pathway for microplastics to reach rivers and drinking water sources, optimizing removal at these facilities is one of the highest-leverage interventions available for protecting human health.
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.