We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Quantifying microplastics and their retention in greywater treatment systems of different scales
AI summary Read the abstract
Your household wastewater from sinks, showers, and laundry (called "greywater") contains tiny plastic particles that wash off clothes and other products—and this study found that certain filtration systems using materials like biochar, gravel, and wetland-style setups can trap over 99% of these microplastics before the water gets reused or released into the environment. This matters because as more communities recycle greywater to conserve water, having effective filtration means fewer microplastics end up back in our environment and water supply, where they could eventually make their way into what we drink and eat.
This study investigated microplastic (MP) concentrations (>10 µm) in greywater from three sources: two single households (2-5 residents), a residential building (∼100 residents), and an urban district (∼1000 residents). Additionally, evaluated the MP retention capacity of five decentralized greywater treatment systems: two on-site package plants (type A and B), a vertical flow (VF) green wall with four filter material (hemp, biochar, pumice, composted fiber soil), a horizontal flow (HF) green wall (biochar and LECA), and a hybrid treatment wetland (HTW) using Filtralite®. MPs were quantified using TED-GC/MS and Py-GC/MS. Influent MP concentrations ranged from 0.3 to 2280 µg/L, with the highest levels in single households and the lowest (≤5 µg/L) in the influents from urban district. Common polymers included polyamide (PA), polypropylene (PP), polystyrene (PS) and polyethylene terephthalate (PET). Polyethylene (PE) was absent in all samples. HTW and HF green wall achieved > 99% MP retention. VF green wall with biochar, pumice, and composted fiber soil retained > 97%, while type A reached > 91%. Mineral wool of system B and hemp from VF green wall had low MP retention. Further research should address standardized sampling and analytical methods, long-term stability, including environmental impact assessment for treated greywater reuse.
More Papers Like This
Microplastics in greywater from households, a residential building, and an urban city district
AI summary Read the abstract
Every time you shower, do laundry, or wash dishes, the wastewater ("greywater") that goes down the drain carries tiny plastic particles called microplastics with it. This study measured how much of this plastic pollution comes from homes and city buildings, and tested whether filter systems designed to clean this water before it's reused or released into the environment can actually catch these particles. Understanding this matters because greywater is increasingly being recycled for things like irrigation, so knowing whether treatment systems can filter out microplastics helps determine if we're inadvertently spreading plastic pollution back into our water and food systems.
Microplastics in greywater from households, a residential building, and an urban city district
AI summary Read the abstract
Every time you shower, wash dishes, or do laundry, that "greywater" carries tiny plastic particles (microplastics) down the drain—and this study measured just how much shows up in wastewater from homes, apartment buildings, and city neighborhoods. The researchers also tested whether treatment systems like filters and "green walls" (plant-covered filtration structures) can catch these particles before the water is reused or released, which matters because unfiltered greywater is increasingly recycled for things like irrigation. While this study doesn't directly examine health effects, understanding how well these systems trap microplastics is an important step toward reducing our ever
Treatment of greywater and presence of microplastics in on-site systems
AI summary Read the abstract
Researchers investigated microplastic occurrence in on-site wastewater treatment systems used for greywater, finding that these decentralized systems do not fully remove microplastics before discharge. The study highlights a poorly studied pathway for microplastics entering the environment.
Microplastic contamination and removal efficiency in greywater treatment using a membrane bioreactor
AI summary Read the abstract
Researchers evaluated a pilot-scale membrane bioreactor for removing microplastics from real household greywater and achieved removal rates of up to 90%. The dominant microplastic types found were polypropylene particles and polyester fibers, with most particles in the 101-300 micrometer size range. The study suggests that membrane bioreactor technology could be an effective tool for reducing microplastic discharge from buildings into the environment.
Microplásticos em água cinza
AI summary Read the abstract
This study examined microplastic contamination in greywater (household wastewater from washing), finding that laundry and personal care product use introduce significant quantities of microplastics into domestic wastewater streams. The research highlights greywater as an underexamined pathway of microplastic release into water systems.
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.