We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Papers
61,005 resultsShowing papers similar to Study of occurrence, abundance, and characterization of microplastics in wastewater treatment plant in New Delhi, India
ClearRemoval of microplastics via wastewater treatment plants in india: Current knowledge and future directions: a review
This review assessed the capacity of wastewater treatment plants in India to remove microplastics, summarizing current knowledge on treatment efficiency, polymer types retained versus discharged, and the role of sludge as a secondary contamination pathway. The review found that Indian WWTPs remove a large fraction of incoming microplastics but still release particles into receiving water bodies, and identified priority research needs.
Removal of microplastics via wastewater treatment plants in india: Current knowledge and future directions: a review
This review examined the capacity of wastewater treatment plants in India to remove microplastics, synthesizing current knowledge on removal efficiencies and identifying major knowledge gaps and future research priorities. While WWTPs remove a substantial fraction of incoming microplastics, effluents still discharge particles into receiving water bodies, and sludge represents a concentrated secondary contamination pathway.
Coexistence of Microplastics and Heavy Metals in Wastewater Treatment Plants of Delhi, India: Occurrence, Transport, Potential Interactions, and Associated Environmental Implications
A study of five Delhi wastewater treatment plants found that while they removed about 70% of microplastics by number, a substantial quantity is still discharged in treated effluent and concentrated in sludge that may reach agricultural land. Elongated fibrous microplastics were disproportionately hard to remove, and co-occurrence with heavy metals was documented, amplifying the potential toxicological impact on receiving water bodies.
Distribution characteristics of microplastics in wastewater treatment plants in mega cities–the case study of Chengdu City
Researchers studied microplastic distribution and removal across wastewater treatment plant processes in China, finding that WWTPs intercept large quantities of MPs before discharge but that residual concentrations in effluent still represent a significant pathway for environmental MP release.
Influence of wastewater treatment process on pollution characteristics and fate of microplastics
Researchers investigated microplastic abundance and removal efficiency across four wastewater treatment plants using different treatment technologies, finding influent concentrations between 539 and 1,290 particles per liter that were reduced substantially by primary and secondary treatment. Smaller microplastic particles proved hardest to remove and most likely to persist in final effluent.
Research progress on microplastics in wastewater treatment plants: A holistic review
This review provides a holistic assessment of microplastics in wastewater treatment plants, covering sampling methods, occurrence patterns across treatment stages, removal efficiencies, and the environmental risks posed by microplastic discharge through effluent and sludge.
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.
Transport and fate of microplastic particles in wastewater treatment plants
Researchers tracked microplastic particles through multiple stages of a wastewater treatment plant, finding that particles were concentrated in sludge but that a fraction passed through each treatment stage and remained in the final effluent.
Investigating the Presence and Distribution of Microplastics in Wastewater Treatment Plants Systems
Researchers investigated microplastic occurrence and distribution in two Malaysian sewage treatment plants, finding that fragment-shaped MPs dominated and effluents contained higher concentrations of smaller particles (63 µm), with polypropylene and polyethylene among the most common polymer types.
Occurrence and Characteristics of Microplastics in a Wastewater Treatment Plant
Researchers sampled the inflow, outflow, and sludge of a Chinese wastewater treatment plant, finding up to 44 microplastic particles per liter in incoming water — mostly polyester fibers. The plant removed about 96% of microplastics, but the remaining fraction was still discharged into receiving waterways.
Characterization and removal of microplastics in a sewage treatment plant from urban Nagpur, India
Researchers detected microplastics in all stages of a sewage treatment plant in Nagpur, India, finding that the treatment process reduced but did not eliminate microplastics from effluent. Sludge accumulated high concentrations of microplastics, raising concerns about land application of treated sludge.
Wastewater treatment plants as a pathway for microplastics: Development of a new approach to sample wastewater-based microplastics
Researchers developed a new sampling and monitoring protocol for microplastics at wastewater treatment plants, enabling more consistent tracking of microplastic loads through treatment stages and discharged effluent.
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.
A global review of microplastics in wastewater treatment plants: Understanding their occurrence, fate and impact
A global review of 121 wastewater treatment plants found that microplastics are consistently present in both influent and effluent, with WWTPs acting as major conduits delivering plastics into aquatic and terrestrial ecosystems. While removal efficiencies varied widely, the sludge produced by these plants represents a concentrated secondary pathway for microplastic release to land.
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.
Wastewater Treatment Plants as a Key Source of Secondary Microplastic in the Urban Environment
Researchers investigated the occurrence, distribution, and characteristics of microplastics in sewage sludge from two wastewater treatment plants in Uttarakhand, India, finding that WWTPs act as a key source of secondary microplastic pollution in the urban environment as sludge concentrates particles removed during treatment.
Fate and occurrence of microplastics in wastewater treatment plants
This review summarizes recent research on the abundance and removal of microplastics in wastewater treatment plants, examining how different treatment stages capture or release microplastic particles and assessing the overall efficiency of current infrastructure.
Microplastic pollution is widely detected in US municipal wastewater treatment plant effluent
Researchers conducted a wide survey of US municipal wastewater treatment plants and found microplastics widely present in effluent, confirming that conventional treatment does not fully remove microplastics and that treatment plants are ongoing sources of environmental contamination.
Distribution and occurrence of microplastics in wastewater treatment plants
Researchers investigated microplastic distribution in three industrial wastewater treatment plants in Vietnam, finding average removal efficiencies of only 21-26%, with billions of microplastic particles discharged daily into receiving waters from the largest plant.
Occurrence, Characteristics, and Removal of Microplastics in Wastewater Treatment Plants
This review summarizes the occurrence, characteristics, and removal efficiency of microplastics in wastewater treatment plants, highlighting how these facilities simultaneously act as sinks trapping microplastics and as sources releasing them into surrounding aquatic and terrestrial environments.
Occurrence, identification, and discharge of microplastics from effluent and sludge of the largest WWTP in Iran—South of Tehran
Researchers quantified microplastics in Iran's largest wastewater treatment plant and found significant concentrations in both effluent and sludge, identifying the facility as a pathway for microplastic release into the environment despite treatment processes.
Occurrence and characteristics of microplastic in different types of industrial wastewater and sludge: A potential threat of emerging pollutants to the freshwater of Bangladesh
Researchers documented the first evidence of microplastic contamination in industrial wastewater and sludge from five industry types in Bangladesh, finding concentrations of 293-2713 MPs/L in wastewater and 115,878 MPs/kg in sludge. Existing treatment plants removed only about 62% of MPs, with nylon, cellulose acetate, and polystyrene fibers being the most common types.
Occurrence of microplastics in influent, sewage sludge and effluent of municipal wastewater treatment plant, A case study center of Iran, Qom city
A study of a municipal wastewater treatment plant found microplastics in the influent, sewage sludge, and effluent, confirming that treatment processes do not fully remove plastic particles before water is discharged. This matters because treated wastewater and sludge applied to agricultural land are significant pathways through which microplastics enter rivers, soils, and ultimately the food supply.
Fate of microplastics in wastewater treatment plants and their environmental dispersion with effluent and sludge
Researchers tracked microplastics through a wastewater treatment plant and found 12 different polymer types in effluents and sludge, with smaller particles (25–104 μm) most abundant and fibres displaying lower sizes than fragments. The study demonstrates that WWTPs do not fully remove microplastics and that processed sludge marketed as soil amendment carries plastic contamination.