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61,005 resultsShowing papers similar to Membrane fouling characteristics and mechanisms in coagulation-ultrafiltration process for treating microplastic-containing water
ClearCoagulation/Flocculation-Ultrafiltration Optimization in Drinking Water Treatment
This study optimized coagulation and flocculation conditions prior to ultrafiltration in drinking water treatment to better remove organic matter and reduce membrane fouling. Improved drinking water treatment also enhances the removal of microplastics that would otherwise pass through to treated tap water.
An assessment of the impact of structure and type of microplastics on ultrafiltration technology for microplastic remediation
Researchers assessed ultrafiltration technology for microplastic removal from water, finding that membrane performance varied based on microplastic structure, size, and polymer type, with implications for optimizing tertiary treatment in water purification systems.
Fate and Behavior of Microplastics in Ultrafiltration Membrane Systems for Water Treatment: Fouling, Releasing, and Organic Leaching
Researchers investigated the fate and behavior of microplastics in ultrafiltration membrane systems used for water treatment, examining three key phenomena: membrane fouling caused by microplastic deposition, release of microplastics through membrane failure or bypass, and leaching of organic additives from microplastics. The work provides mechanistic understanding of how microplastics interact with ultrafiltration systems in drinking water treatment contexts.
Removal characteristics of microplastics by Fe-based coagulants during drinking water treatment
The removal of polyethylene microplastics from drinking water was tested with Fe-based coagulants under various conditions, finding that traditional coagulation alone achieved below 15% removal, while coagulation combined with ultrafiltration substantially improved performance. The study identifies the limitations of conventional water treatment for microplastic removal and highlights ultrafiltration as a necessary add-on for effective particle reduction.
Membrane fouling mechanisms in the presence of microplastics and organic matter: The unexpected mitigating role of Ca2+
Researchers investigated how microplastics interact with organic matter and calcium ions during ultrafiltration membrane treatment. They found that the order in which calcium ions are added to the system dramatically affects membrane fouling, with pre-mixing calcium and organic matter before adding microplastics reducing fouling by over 90%. The findings reveal an unexpected beneficial role for calcium in mitigating membrane fouling when microplastics and organic matter are present together.
Hydraulic and chemical cleaning efficiency for the release of microplastics retained during coagulation/flocculation-ultrafiltration
Researchers studied how effectively ultrafiltration membranes used in drinking water treatment can capture microplastics, and whether standard cleaning procedures release them back into treated water. They found that while the membranes effectively retained microplastics during filtration, chemical cleaning with sodium hypochlorite released a significant portion of the trapped particles. The study raises important questions about whether routine membrane cleaning in water treatment plants may inadvertently reintroduce microplastics into the drinking water supply.
Reduction of Ultrafiltration Membrane Fouling by the Pretreatment Removal of Emerging Pollutants: A Review
Researchers reviewed pretreatment methods such as coagulation, adsorption, and advanced oxidation for reducing ultrafiltration membrane fouling caused by emerging pollutants including microplastics and antibiotics. The study suggests that while these pretreatments show promise, the mechanisms by which emerging pollutants contribute to membrane fouling still need further investigation.
Comprehensive effects of microplastics on algae-laden surface water treatment by coagulation-ultrafiltration combined process: Algae cultivation, coagulation performance and membrane fouling development
Researchers studied how microplastics affect the treatment of algae-contaminated drinking water using a combined filtration process. They found that microplastics initially stimulated algae growth by 58% but then suppressed the algae's release of organic compounds, and the plastics actually helped form larger clumps during water treatment. While microplastics complicated the treatment process in some ways, understanding these interactions is important for ensuring drinking water plants can effectively remove both algae and microplastics.
Evaluation of Membrane Fouling by Microplastic Particles in Tertiary Wastewater Treatment Processes
Researchers evaluated membrane fouling caused by microplastic particles during tertiary wastewater treatment, finding that microplastics contributed to fouling through pore blocking and cake layer formation, which reduced membrane performance and treatment efficiency.
Recent advances on micro/nanoplastic pollution and membrane fouling during water treatment: A review
Researchers reviewed recent advances in understanding how micro- and nanoplastics contribute to membrane fouling during water treatment processes. The study found that while membrane separation effectively removes microplastics from wastewater effluent, fouling caused by plastic particles along with dissolved organics and extracellular polymers remains a key obstacle, and understanding the fouling mechanisms is critical for improving treatment efficiency.
Removal behaviors and mechanism of polystyrene microplastics by coagulation/ultrafiltration process: Co-effects of humic acid
Researchers investigated coagulation-ultrafiltration for removing polystyrene microplastics from drinking water, finding that aluminum-based coagulants achieved over 92% removal efficiency and that humic acid co-presence affected the removal mechanism and membrane fouling.
Analysis of membrane surface after the filtration of surface water containing microplastic
Researchers tested ultrafiltration and nanofiltration membranes on real river water containing microplastics and found both membrane types completely removed plastic particles from the filtered water, though the deposited microplastics reduced water flow through the membranes over time — confirming membrane filtration as an effective but imperfect water treatment strategy.
Understanding and Improving Microplastic Removal during Water Treatment: Impact of Coagulation and Flocculation
Researchers systematically tested coagulation and flocculation for removing microplastics from drinking water, finding that removal efficiency depended strongly on plastic particle size and whether particles had been weathered, with smaller pristine particles being the hardest to remove.
Towards microplastics contribution for membrane biofouling and disinfection by-products precursors: The effect on microbes
Researchers found that microplastics in raw water increased microbial growth and altered community composition during ultrafiltration, promoting extracellular polymer production that accelerated membrane fouling and elevated disinfection by-product formation in treated water.
Release of microplastics from polymeric ultrafiltration membrane system for drinking water treatment under different operating conditions
Researchers discovered that the plastic membrane filters used to purify drinking water can actually release microplastics into the treated water. The particles came not just from the membrane itself but also from plastic equipment in the system, meaning that water treatment technology designed to remove contaminants may inadvertently be adding new plastic particles to our drinking water.
Removal of Microplastics from Laundry Wastewater Using Coagulation and Membrane Combination: A Laboratory-Scale Study
Researchers characterized microplastics in raw domestic laundry wastewater (9,000–11,000 particles/L, dominated by polyester fibers) and tested whether combining coagulation with ultrafiltration membrane filtration improved MP removal. The combined process significantly enhanced removal compared to coagulation alone, highlighting laundry wastewater as a major MP source amenable to treatment at scale.
Occurrence and removal of microplastics by advanced and conventional drinking water treatment facilities
Researchers evaluated the performance of both advanced and conventional drinking water treatment processes for removing microplastics, finding that advanced methods such as ultrafiltration substantially outperform standard coagulation and filtration. Most conventional treatment plants leave a meaningful fraction of microplastics in finished drinking water.
Kinetic and mechanistic analysis of membrane fouling in microplastics removal from water by dead-end microfiltration
Researchers analyzed membrane fouling during microplastic removal by microfiltration, finding that polyamide particles caused more fouling than polystyrene due to higher hydrophobicity and smaller size, with pore blocking followed by cake layer formation as the dominant fouling mechanisms.
Revealing the removal behavior of five neglected microplastics in coagulation-ultrafiltration processes: Insights from experiments and predictive modeling
Researchers combined laboratory experiments with artificial neural network modeling to study how five commonly overlooked types of microplastics are removed during drinking water treatment. They found that coagulation alone removed 37-56% of the microplastics, while adding ultrafiltration removed virtually all remaining particles. The study provides new insights into the chemical and physical interactions that drive microplastic removal, which could help optimize water treatment processes.
Occurrence and removal of microplastics by advanced and conventional drinking water treatment facilities
Researchers assessed microplastic occurrence and removal efficiency at drinking water treatment plants using both conventional and advanced treatment processes. Advanced treatment steps such as ultrafiltration and activated carbon significantly improved microplastic removal compared to conventional coagulation and filtration alone.
Microplastics removal by coagulation: cutting-edge coagulants and coagulation processes
This review examines how coagulation, a water treatment process that clumps particles together for easier removal, can be used to filter microplastics from water. Researchers summarize recent advances in coagulant materials, including novel hybrid formulations, and the factors that influence their effectiveness. The study highlights coagulation as a practical and scalable approach for addressing microplastic contamination in water treatment systems.
Effectiveness of Microplastic Removal from River Water Using Conventional and Ultrafiltration Techniques: Correlation with Physicochemical Parameters
This study compared conventional and ultrafiltration water treatment methods for removing microplastics from river water in Indonesia, finding that ultrafiltration achieved significantly higher MP removal efficiencies, suggesting it as a more effective option for addressing MP contamination in drinking water.
Impact of Nano- and Microplastics on Membrane Technology Performance
This thesis investigated the influence of model microplastic fibers on membrane technologies used in wastewater treatment, specifically crossflow ultrafiltration and membrane bioreactor systems, finding that microplastics minimally affected performance during the initial start-up phase. The findings suggest these membrane technologies are relatively resilient to microplastic contamination in early operation.
Electro-coagulation pretreatment for improving nanofiltration membrane performance during reclamation of microplastic-contaminated secondary effluent: unexpectedly enhanced membrane fouling and mechanism analysis by MD-DFT simulation
Researchers evaluated electro-coagulation as a pretreatment step for improving nanofiltration membrane performance during treatment of microplastic-contaminated wastewater. They found that at low electrical current, the pretreatment unexpectedly worsened membrane fouling because residual microplastics provided habitats for microbes that secreted sticky metabolites. At higher current levels, however, electro-coagulation effectively eliminated the negative effects of microplastics, revealing the importance of optimizing treatment parameters.