Nanocomposite Membrane Removes Bentazone From Water
A new single-layer membrane successfully extracts agricultural pollutants using recycled materials and graphene oxide.
Updated on Oct. 20, 2026 in Materials Science
Researchers have developed a single-layer nanocomposite forward osmosis membrane designed to remove bentazone from water supplies. Under laboratory conditions, this material achieved a 99.9% removal efficiency for the herbicide.
Why it matters
Bentazone is a common agricultural herbicide that poses risks to aquatic environments and drinking water quality. This single-layer design improves mechanical strength and water transport while eliminating interfacial defects found in multi-layer alternatives.
The membrane is composed of 16.5 wt% recycled PET, 4 wt% PEG-400, 79 wt% NMP, and 0.5 wt% graphene oxide. It demonstrates a water flux of 35.8 L m-2 h-1 and a water permeability of 4.04 L m-2 h-1 bar-1.
The players
Daphnia magna
These small planktonic crustaceans are widely used as a model organism in toxicology and environmental research to determine the impact of water pollutants.
The details
Fabricated using a phase inversion process on a homogeneous solution, the membrane incorporates graphene oxide to enhance hydrophilicity. Toxicity testing on Daphnia magna confirms that the water quality significantly improves after the filtration process.
Timeline
The research findings were published on October 20, 2026.
The Big Picture
The development of thin-film composite membranes has long sought to minimize interfacial defects, and this single-layer design marks a departure from traditional multi-layer production methods. By integrating recycled polymers with graphene oxide, the study shifts focus toward more sustainable and resilient material synthesis.
This membrane technology could eventually provide a cost-effective method for municipal water plants to filter stubborn agricultural herbicides from the public supply. Continued testing may lead to broader commercial adoption of recycled PET-based materials in advanced water treatment systems.
The takeaway
This innovation demonstrates that incorporating recycled plastics into advanced filtration systems can yield high-performance results. Readers interested in environmental sustainability may look forward to future industrial applications of this high-efficiency water treatment material.
Further reading
For more advancements in filter technology, browse our Materials Science section.
