Membrane science. Engineered for industry.
Our separator technology was developed at IIT Bombay and is advanced by Greenprastha's own research, engineering and manufacturing teams, and proven against commercial references.
Led by Prof. Swatantra Pratap Singh
Prof. Singh is an Associate Professor at IIT Bombay, where he leads the Environmental Nanotechnology Lab and the Gogri Hub for Membranes Research. The technology behind Nerva H2Sep 500 was developed in his research programme, which is recognised by the European Membrane Society, INAE and INSA and cited more than 5,000 times.
The science behind every product
Nanomaterial composite separators
Nanomaterial-modified zirconia–polymer composites: the chemistry behind Nerva H2Sep 500.
Ion-exchange membranes & MEAs
Ion-selective, anion-exchange and bipolar membranes, and graphene-based membrane-electrode assemblies.
Electrodes & interfaces
Electrocatalytic surfaces and zero-gap interfaces that lower cell voltage.
Stability in hot alkali
Mechanical, chemical and thermal durability testing of separators in hot, concentrated KOH.
Cell & stack characterisation
Polarisation, ionic resistance, bubble point and gas-purity methods.
Degradation & lifetime
Accelerated ageing and long-duration tests that predict separator life in the stack.
Published where the field reads
| Publication | Journal | Citations |
|---|---|---|
| Laser-induced graphene by multiple lasing: toward electronics on cloth, paper and food | ACS Nano, 2018 | 1,200+ |
| Sulfur-doped laser-induced porous graphene derived from polysulfone-class polymers and membranes | ACS Nano, 2018 | 380+ |
| Laser-induced graphene layers and electrodes prevent microbial fouling | ACS Appl. Mater. Interfaces, 2017 | 260+ |
| Laser-induced graphene–PVA composite as robust electrically conductive water treatment membranes | ACS Appl. Mater. Interfaces, 2019 | 130+ |
| Synthesis, fabrication and mechanism of action of electrically conductive membranes: a review | Environ. Sci.: Water Res. Technol., 2021 | 100+ |
| Graphene oxide on laser-induced graphene filters for antifouling, electrically conductive UF membranes | Journal of Membrane Science, 2019 | 80+ |
From casting to cell testing
Casting & fabrication
Flat-sheet membrane casting, laser processing, sonication and vacuum ovens.
Filtration testing
Dead-end UF/RO, UF cross-flow, NF–RO cross-flow and FO–MD hybrid systems.
Electrochemistry
Electrochemical analysers, DC power sources and alkaline electrolyser cell testing.
Characterisation
Contact angle, digital microscopy, tensile testing, bubble point and gas chromatography.
Academic partnerships that keep us at the frontier
IIT Bombay
Where our membrane technology was invented, and our long-term research partner.
Gogri Hub for Membranes Research
A unit of IIT Bombay's Translational Research Centre for chemicals and materials.
DeSaltM Centre of Excellence
Membranes for desalination, brine management and water recycling.
SINE, IIT Bombay
IIT Bombay's technology business incubator.
Bring us your separation problem
Joint development, sponsored research and independent membrane and cell testing, led by our technical team.