Researchers develop one-nanometer “POMbrane” filtration membrane for more selective industrial separations
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Researchers reported a new crystalline membrane with uniform one-nanometer pores that could improve water reuse and lower energy use in industrial separations.
Key Facts
- The study was published in the Journal of the American Chemical Society.
- Researchers from CSMCRI, IIT Gandhinagar, Nanyang Technological University, and the S N Bose National Centre for Basic Sciences developed the membrane.
- The new membranes, called “POMbranes,” use polyoxometalate clusters with a permanently stable 1-nanometer opening.
- The report said separation processes account for roughly 40% to 50% of global industrial energy consumption.
- The report said the technology could support applications in drug purification, textile dye treatment, and food production.
What Happened
Researchers reported a new type of highly precise filtration membrane designed for industrial separations. The study, published in the Journal of the American Chemical Society, describes crystalline membranes called “POMbranes” with pores about one nanometer wide.
The team included researchers from the CSIR-Central Salt and Marine Chemicals Research Institute (CSMCRI), the Indian Institute of Technology Gandhinagar (IITGN), Nanyang Technological University in Singapore, and the S N Bose National Centre for Basic Sciences.
Why It Matters
The report said many industrial separation steps are major energy users, accounting for roughly 40% to 50% of global industrial energy consumption. That puts pressure on operations that rely on distillation and evaporation, especially where energy costs, emissions, and water reuse targets are under scrutiny.
Membrane filtration is already viewed as a cleaner alternative, but the report said conventional polymer membranes can have uneven pores that shift or degrade over time. A membrane with uniform, stable pore size could offer more consistent separation performance in demanding process environments.
Key Details
The researchers said the membrane design is inspired by biological systems such as aquaporins, which regulate molecular movement through precisely sized channels. They used polyoxometalate (POM) clusters to create openings that are exactly 1 nanometer wide and described as permanently stable.
Dr. Shilpi Kushwaha of CSMCRI said the new class of membranes is “ultra-selective,” while Ms. Priyanka Dobariya said the key advantage is a permanent hole that does not change or lose shape, unlike traditional plastic filters.
- Potential application areas named in the report: drug purification
- Potential application areas named in the report: textile dye treatment
- Potential application areas named in the report: food production
- Reported benefits: lower energy use and increased water reuse
What To Watch Next
For chemical buyers and plant teams, the key question is whether this membrane platform can scale into durable, cost-competitive industrial service. The report frames it as a promising alternative to energy-intensive separation methods rather than a fully deployed replacement.
For EHS and sustainability teams, the most relevant signal is the possibility of reduced energy demand in separation-heavy operations, along with improved water reuse performance. Further work will likely focus on performance validation across real process streams and industrial operating conditions.
Alliance's Take
Facilities that run separation-heavy units should watch this technology as a possible route to lower utility demand and tighter process selectivity. If it scales, it could affect membrane sourcing strategies in water reuse, purification, and dye-treatment systems.
For compliance and EHS planning, the practical value is reduced energy intensity rather than a near-term regulatory change. Teams should track durability, fouling resistance, and operating window data before considering procurement changes.
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Frequently Asked Questions
What is new about these membranes?
The membranes use polyoxometalate clusters with permanently stable one-nanometer pores, which the researchers say allows very precise separations.
Which industrial uses were mentioned?
The report highlighted drug purification, textile dye treatment, and food production as relevant separation applications.
Why does this matter for operations?
The report said separations consume roughly 40% to 50% of global industrial energy, so a more selective membrane could reduce energy use and improve water reuse.
