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61,005 resultsShowing papers similar to Comprehensive effects of microplastics on algae-laden surface water treatment by coagulation-ultrafiltration combined process: Algae cultivation, coagulation performance and membrane fouling development
ClearMembrane fouling characteristics and mechanisms in coagulation-ultrafiltration process for treating microplastic-containing water
This study investigated how microplastics affect membrane fouling during a common water treatment process that combines coagulation with ultrafiltration. Researchers found that while microplastics initially worsen membrane fouling, adding the right amount of coagulant can actually turn the plastics into an advantage by creating a looser filter cake that improves water flow.
Enhancing microplastic removal from natural water using coagulant aids
Researchers tested different chemical treatments for removing microplastic beads from natural water and found that polyaluminium chloride combined with polyacrylamide achieved over 95% removal across six common plastic types. The treatment worked on particles ranging from 10 to 1,000 micrometers, and natural organic matter in the water actually improved performance. The findings suggest that optimizing standard water treatment processes could be a practical way to reduce microplastic contamination in drinking water sources.
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.
Interplay of plastic pollution with algae and plants: hidden danger or a blessing?
Researchers tested the ability of three microalgae species to remove microplastics from water through bioadhesion, finding that all three species could adsorb particles onto their surfaces. Removal efficiency depended on particle size, surface charge, and algae cell morphology.
Coagulation/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.
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.
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.
Evaluating the impact of innovative algae- based membrane bioreactors against the emerging microplastic crisisin combating water pollution
This study evaluated algae-based membrane bioreactors for removing microplastics and other emerging contaminants from wastewater, finding that combining algal biomass with membrane filtration improved MP removal efficiency compared to conventional biological treatment alone.
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.
Investigating the Potential of Coagulants to Improve Microplastics Removal in Wastewater and Tap Water
Researchers found that adding coagulants (FeCl3 or Al2(SO4)3) to wastewater and tap water improved microplastic removal, with aluminum sulfate achieving 43% and 62% removal efficiencies respectively, though the high concentrations required suggest that combining coagulants with organic polyelectrolytes could improve practicality.
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.
Microplastic interactions with freshwater microalgae: Hetero-aggregation and changes in plastic density appear strongly dependent on polymer type
Researchers studied interactions between microplastics and freshwater microalgae, finding that microplastics can physically attach to algal cells to form hetero-aggregates, altering both particle behavior and algal physiology.
Effective Removal of Microplastics Using a Process of Ozonation Followed by Flocculation with Aluminum Sulfate and Polyacrylamide
Researchers tested a two-step water treatment process combining ozonation with flocculation to remove microplastics. They found that ozone pretreatment roughened the microplastic surfaces and added chemical groups that dramatically improved removal rates, from 40% to 91%, during the subsequent flocculation step. The findings suggest this combined approach could significantly enhance microplastic removal in conventional water treatment plants.
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.
Effect of different size microplastic particles on the construction of algal-bacterial biofilms and microbial communities
Researchers tested how microplastic particles of different sizes affect algal-bacterial biofilms used for sewage treatment. Smaller nanoplastics caused more damage to the biofilm community, reducing algal growth and shifting microbial diversity, while larger microplastics had milder effects. This matters because algal-bacterial systems are a green technology for water treatment, and microplastic contamination could undermine their effectiveness.
Efficient removal of microplastics through a combined treatment process: Pre-filtration and adsorption
A combined treatment process integrating coagulation, sedimentation, and filtration achieved efficient removal of microplastics from drinking water. The study supports the feasibility of adapting existing water treatment infrastructure to address microplastic contamination.
Influence of microplastics on microalgal performance during wastewater polishing
Researchers studied how five common types of microplastics affect the green alga Chlorella vulgaris during wastewater treatment. They found that while microplastics reduced algal metabolism and growth, the organism maintained its ability to effectively remove nutrients from wastewater. The study demonstrates that Chlorella vulgaris is a robust candidate for bioremediation of microplastic-contaminated wastewater, even under pollutant stress.
Effective removal of microplastics by filamentous algae and its magnetic biochar: Performance and mechanism
Researchers found that filamentous algae and a magnetic biochar made from the algae can effectively remove microplastics from water, with the biochar absorbing over 215 milligrams of microplastics per gram. The algae naturally trap microplastics through entanglement and adhesion, while the magnetic biochar can be easily recovered from water using magnets. This dual approach could help address both algae bloom problems and microplastic contamination in urban water systems.
The role of algae in regulating the fate of microplastics: A review for processes, mechanisms, and influencing factors
This review examines how algae influence the fate of microplastics in aquatic environments through processes including retention, flocculation, deposition, and biodegradation. Researchers found that algae can trap microplastics via adhesion and produce extracellular substances and enzymes that contribute to aggregate formation and partial breakdown of plastic particles, though these interactions are influenced by algal species, microplastic characteristics, and environmental conditions.
Behaviour of M. aeruginosa–Microplastic composite pollutants in coagulation and sludge storage
Microcystis aeruginosa extracellular polymers promoted adhesion of microplastics to algal flocs during coagulation, improving MP removal efficiency with polyaluminum chloride, while microplastics had opposite effects on algal removal depending on whether inorganic or organic coagulants were used.
Effects of microplastic on submerged nanofiltration for advanced drinking water treatment
Researchers investigated how microplastics in reservoir water affect the performance of submerged nanofiltration membranes used for drinking water treatment. The study found that the presence of polyethylene terephthalate microplastics influenced the removal of dissolved organic matter by the membrane, with implications for optimizing advanced water treatment processes.
Effect of Microplastics on the Coagulation Mechanism of Polyaluminum–Titanium Chloride Composite Coagulant for Organic Matter Removal Revealed by Optical Spectroscopy
This study investigated how microplastics interfere with a water treatment coagulant (PATC) designed to remove dissolved organic matter from drinking water. High concentrations of aged polystyrene microplastics competed with organic matter for active binding sites on the coagulant, reducing its effectiveness at removing certain compounds while also slowing the breakdown of its most reactive component. The results show microplastics in source water can compromise the efficiency of conventional water purification processes.
The release inhibition of organic substances from microplastics in the presence of algal derived organic matters: Influence of the molecular weight-dependent inhibition heterogeneities
This study found that algae-derived organic matter in water affects the release of chemicals from microplastics, with larger molecular weight compounds having a greater inhibitory effect. Understanding these interactions is important for predicting how microplastics behave in natural water environments and the potential release of toxic additives.
The Effects of Microplastics on Floc Formation, Nutrient Removal and Settleability in Wastewater Treatment
Researchers examined the interactions of microplastics with activated sludge in wastewater treatment plants, investigating effects on floc formation, nutrient removal efficiency, and settleability to understand how microplastic contamination may compromise treatment performance.