TechConnect Innovation Program

Chemically Modified Nanofiltration Hollow Fiber Membranes for Heavy Metal Removal

National University of Singapore, Singapore, Singapore

TECHNOLOGY SUMMARY

This technology relates to a hollow fiber nanofiltration membrane (polymeric) that can remove both positively and negatively charged heavy metal ions from water. Rejection rates for cations can be 91-99% at 13 bar. For Cr2O72-, CdCl42- and HAsO42-, rejection is ~99.74%(pH 10), 99.88% and 99.82% at 15 bar.

Primary Application Area: Environmental, Water & Waste

Technology Development Status: Prototype

Technology Readiness Level: TRL 2

FIGURES OF MERIT

Value Proposition: No sludge produced, low energy requirement for the membrane process (as it is nanofiltration based, compared to RO which requires high pressures), less expensive than ion exchange resins.

SHOWCASE SUMMARY

Organization Type: Academic/Gov Lab

Showcase Booth #: 717

GOVT/EXTERNAL FUNDING SOURCES

Government Funding/Support to Date: Singapore government grant

Primary Sources of Funding: Federal Grant

Looking for: Both Funding and Development Partners