Invention:
This technology is a physical method for removing microplastics from water using acoustic waves to generate vortices in a flow of water through a pipe or chamber to trap microplastics and other contaminant particles, including sub-micron particles which will be focused at the vortices’ centers. Captured particles can then be removed through sedimentation techniques or by using a fine outlet pipe positioned at the vortex center within the water conduit. Ultimately, this technology improves particle concentration using an acoustic vortex for enhanced manipulation of ultra-small particles to effectively and efficiently removes microplastics and other contaminants from water.
Background:
Microplastics, are plastic particles smaller than 5 mm in length that pose a major risk to sensitive ecosystems and to human health. An estimated 9 to 14 million metric tons of plastic enter the ocean each year, with microplastics comprising the vast majority of these fragments. Over time, these contaminants accumulate in aquatic organisms and are subsequently introduced into the human body through the food chain. Therefore, there is a pressing need to develop effective techniques for the removal of microplastics from contaminated water. There are a wide variety of methods being used, including physical, biological, and chemical approaches, but many have major limitations. Binding coagulants to microplastics, for instance, can be energy-intensive, costly, and can produce sludge or cause secondary contamination. Physical methods have been explored, with multiple acoustic wave trapping technologies in development. However, acoustic wave trapping typically isn’t applicable to sub-micron particles. This novel approach uses acoustic waves to generate vortices which can trap microplastics and other contaminant particles at sub-micron sizes, achieving energy-efficient, effective microplastic removal without the drawbacks of other approaches.
Applications:
- Water treatment
- Public health
- Environment
- Marine and ocean cleanup
Advantages:
- Cost-efficient and energy-efficient
- Improved particle concentration
- Enhanced manipulation of ultra-small particles for effective removal
- Chemical-free process with no secondary contaminants
- Operates without clogging
