Papers

61,005 results
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Article Tier 2

Recent advances on microplastics pollution and removal from wastewater systems: A critical review

This review summarizes the latest research on microplastic detection, occurrence, and removal in wastewater treatment plants. While treatment plants can remove 57-99% of microplastics depending on the stage, significant amounts still escape into the environment through treated water and sludge. The findings highlight the need for advanced treatment methods to prevent microplastics from reaching waterways and ultimately human water supplies.

2023 Journal of Environmental Management 81 citations
Article Tier 2

Effectiveness of conventional municipal wastewater treatment plants in microplastics removal: Insights from multiple analytical techniques

Researchers evaluated the effectiveness of conventional municipal wastewater treatment plants in removing microplastics across multiple treatment stages, finding removal efficiencies of 70–90% but documenting that billions of particles still pass through in final effluent daily.

2025 Journal of Environmental Sciences 4 citations
Review Tier 2

The Effect of Wastewater Treatment Plants on Retainment of Plastic Microparticles to Enhance Water Quality—A Review

This review examined how well wastewater treatment plants remove microplastics, finding that most conventional systems achieve high removal rates but still discharge significant plastic quantities in treated effluent and sludge. Improving treatment efficiency and preventing sludge application to farmland are key strategies for reducing microplastic release.

2021 Journal of Environmental Protection 12 citations
Article Tier 2

Recent advances in treatment of microplastics in wastewater

This review examines current methods for removing microplastics from wastewater, including conventional treatment processes and newer advanced techniques. Researchers found that while standard treatment plants can remove a significant portion of microplastics, many particles still pass through into waterways, and the captured plastics often end up concentrated in sewage sludge. The study highlights the need for improved treatment technologies to more effectively address microplastic contamination in water systems.

2024 IWA Publishing eBooks 5 citations
Article Tier 2

Microplastics removal in wastewater treatment plants: a critical review

This critical review of microplastic removal in wastewater treatment plants examines removal efficiencies across different treatment stages, finding that while WWTPs remove the majority of microplastics from influent, they still release millions of particles daily and are a major pathway for microplastics entering aquatic environments.

2020 Environmental Science Water Research & Technology 398 citations
Article Tier 2

Microplastics in wastewater treatment plants: Sources, properties, removal efficiency, removal mechanisms, and interactions with pollutants

This review examines microplastic sources, properties, removal efficiency, and removal mechanisms across different wastewater treatment plant stages. Researchers found that while treatment plants remove a significant portion of microplastics, they cannot eliminate them entirely, resulting in the continued release of millions of particles into the environment daily through effluent and sludge.

2023 Water Science & Technology 128 citations
Article Tier 2

Advanced Wastewater Treatment for Mitigating Microplastics Contamination

This review examines advanced wastewater treatment technologies for removing microplastics from effluent, noting that treatment plants receive up to 372 billion microparticles daily and that primary and secondary treatment methods are insufficient to prevent environmental release.

2025
Article Tier 2

Reuse of Water Contaminated by Microplastics, the Effectiveness of Filtration Processes: A Review

This review evaluates filtration technologies for removing microplastics from water, finding that while treatment plants reduce microplastic counts effectively, large discharge volumes still release substantial quantities into the environment.

2022 Energies 23 citations
Article Tier 2

Nano and microplastics occurrence in wastewater treatment plants: A comprehensive understanding of microplastics fragmentation and their removal

This review provides a comprehensive look at how nano- and microplastics move through wastewater treatment plants, from entry to discharge. Researchers examined how larger plastic particles fragment into smaller nano-sized pieces during treatment processes and evaluated which treatment stages are most effective at removing them. The study finds that while conventional treatment removes most microplastics, significant quantities of nanoplastics may still pass through into waterways.

2023 Chemosphere 88 citations
Article Tier 2

Micro- and nanoplastics removal mechanisms in wastewater treatment plants: A review

This review examines how conventional wastewater treatment plants remove micro- and nanoplastics, and evaluates advanced technologies like membrane filtration and electrocoagulation that could improve removal rates. While existing treatment plants can capture most microplastics, they still release significant quantities into waterways through their enormous discharge volumes. The study highlights that biological treatment steps may also transform microplastics in potentially harmful ways that need further investigation.

2022 Journal of Hazardous Materials Advances 88 citations
Article Tier 2

A review of the removal of microplastics in global wastewater treatment plants: Characteristics and mechanisms

This review analyzed data from 38 wastewater treatment plants across 11 countries to understand how effectively they remove microplastics. While treatment plants can remove the majority of microplastics from wastewater, significant quantities still pass through into waterways, and the microplastics captured in sewage sludge may re-enter the environment when that sludge is applied to farmland.

2020 Environment International 589 citations
Article Tier 2

Removal of microplastics from wastewater: available techniques and way forward

This review surveys the available techniques for removing microplastics from wastewater, including filtration, coagulation, biological treatment, and advanced methods like membrane bioreactors. Researchers found that while conventional treatment plants can remove a substantial fraction of microplastics, significant amounts still pass through to the environment. The study emphasizes the need for upgrading wastewater treatment systems to better capture these emerging contaminants.

2021 Water Science & Technology 100 citations
Review Tier 2

Removal of microplastics in unit processes used in water and wastewater treatment: a review

This review evaluates various water and wastewater treatment technologies for their ability to remove microplastics, including filtration, coagulation, and advanced oxidation methods. The authors found that while conventional treatment plants can remove a large percentage of microplastics, significant quantities still pass through into treated water. The study calls for combining multiple treatment steps and developing new technologies specifically designed to capture micro- and nanoplastic particles.

2023 Archives of Environmental Protection 24 citations
Systematic Review Tier 1

Efficiency of Wastewater Treatment Plants (WWTPs) for Microplastic Removal: A Systematic Review

This systematic review examines how well wastewater treatment plants remove microplastics before releasing water back into the environment. The findings show that while treatment plants catch many microplastics, significant amounts still pass through, meaning microplastics continue to enter rivers, lakes, and oceans that supply our drinking water and seafood.

2020 International Journal of Environmental Research and Public Health 138 citations
Systematic Review Tier 1

A systematic review on the occurrence and removal of microplastics during municipal wastewater treatment plants

This systematic review analyzed 54 wastewater treatment plants across 25 studies to determine how effectively they remove microplastics. The findings show an average removal rate of about 88%, but the remaining 12% passes through into waterways. This matters because the microplastics that escape treatment plants end up in rivers, lakes, and oceans, eventually entering our drinking water and food supply.

2024 Environmental Engineering Research 9 citations
Review Tier 2

Removal of microplastics and nanoplastics in water treatment processes: A systematic literature review

Researchers systematically reviewed 103 studies across 26 water treatment plants in 12 countries to assess how well various technologies remove microplastics and nanoplastics from drinking water, finding that while coagulation, filtration, and advanced treatments help, significant gaps remain. The review identifies that no single process achieves complete removal, leaving microplastics as a persistent contaminant in treated water supplies.

2024 Journal of Water Process Engineering 34 citations
Article Tier 2

Advancements and Regulatory Situation in Microplastics Removal from Wastewater and Drinking Water: A Comprehensive Review

This review examines current methods for detecting and removing microplastics from wastewater and drinking water treatment plants. Researchers found that while existing treatment processes remove many microplastics, some particles still pass through to discharge into natural water bodies. The study also provides an overview of regulations and policies in the United States addressing microplastic contamination in water systems.

2024 Microplastics 30 citations
Article Tier 2

Removal of microplastics from wastewater for world water pool protection

This review examines existing techniques for removing microplastics from treated wastewater before it is released into natural water bodies, noting that standard treatment plants only remove 83–98% of microplastics — still leaving billions of particles entering ecosystems daily. Advanced options like membrane bioreactors and biosorbents made from agricultural waste show promise but remain costly to scale.

2023 Scientific Works of National University of Food Technologies 1 citations
Article Tier 2

Conventional and Advanced Treatment Technologies for Microplastics in Water Treatment Facilities

This review evaluated both conventional and advanced water treatment methods for removing microplastics from wastewater. Researchers found that while techniques like coagulation, filtration, and membrane bioreactors can remove most microplastics, treatment plants still release significant quantities due to the sheer volume of water processed, and microplastic-laden sludge applied to farmland creates another pathway for environmental contamination.

2024 Preprints.org 6 citations
Article Tier 2

Microplastics in wastewater plants: A review of sources, characteristics, distribution and removal technologies

This review provides a comprehensive look at how microplastics enter, move through, and are removed from wastewater treatment plants. Researchers found that while treatment processes can remove a significant portion of microplastics from water, large quantities still escape into rivers and oceans. The study highlights the need for improved treatment technologies and better monitoring to reduce microplastic discharge from these facilities.

2024 Journal of Contaminant Hydrology 23 citations
Article Tier 2

The fate of microplastics in wastewater treatment plants: An overview of source and remediation technologies

This review examines how wastewater treatment plants serve as key pathways for microplastic entry into the environment, analyzing removal efficiencies across different treatment stages and identifying advanced technologies for improved microplastic remediation.

2022 Environmental Technology & Innovation 159 citations
Article Tier 2

Sources, fate, effects, and analysis of microplastic in wastewater treatment plants: A review

This review examines how wastewater treatment plants handle microplastics, finding that while they can remove over 90% of particles, the sheer volume of water processed means billions of microplastics still escape into waterways daily. The remaining microplastics also concentrate in sewage sludge, which is often spread on agricultural land. Wastewater treatment plants are both a filter for and a redistribution point of microplastic pollution.

2023 Environmental Engineering Research 31 citations
Article Tier 2

Toward a Better Understanding of the Contribution of Wastewater Treatment Plants to Microplastic Pollution in Receiving Waterways

This review examines how wastewater treatment plants (WWTPs) contribute to microplastic pollution in receiving waterways, synthesizing evidence on removal efficiencies of different treatment stages and the characteristics of microplastics that escape into the environment. Researchers found that while WWTPs remove the majority of incoming microplastics, they remain a significant source of microplastic discharge due to the large volumes of wastewater processed daily.

2022 Environmental Toxicology and Chemistry 14 citations
Article Tier 2

Nationwide evaluation of microplastic properties in municipal wastewater treatment plants in South Korea

Researchers evaluated microplastic levels at 22 municipal wastewater treatment plants across South Korea and found that while the plants remove over 99% of microplastics, the sheer volume of treated water still releases significant quantities into receiving waterways. Most removal happened during the sedimentation stage, and the most common microplastic types found were fragments and fibers under 300 micrometers. The study suggests that despite high removal efficiency, wastewater treatment plants remain an important source of microplastic discharge into the environment.

2024 Environmental Pollution 23 citations