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Rotating reverse osmosis for wastewater reuse (Document No: 20040142362)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Yoon, Yeomin Lueptow, Richard M. Pederson, Cynthia |
| Copyright Year | 2004 |
| Description | Our previous work established the concept of a low-pressure rotating reverse osmosis membrane system. The rotation of the cylindrical RO filter produces shear and Taylor vortices in the annulus of the device that decrease the concentration polarization and fouling commonly seen with conventional RO filtration techniques. A mathematical model based on the film theory and the solution-diffusion model agrees well with the experimental results obtained using this first generation prototype. However, based on the model, the filtrate flux and contaminant rejection depend strongly on the transmembrane pressure. Therefore, the goal of our current work is to improve the flux of the device by increasing the transmembrane pressure by a factor of 3 to 4. In addition, the rejections for a wider variety of inorganic and organic compounds typically found in space mission wastewater are measured. |
| File Size | 2650346 |
| Page Count | 32 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20040142362 |
| Archival Resource Key | ark:/13960/t4km48203 |
| Language | English |
| Publisher Date | 2004-08-01 |
| Access Restriction | Open |
| Subject Keyword | Man/system Technology And Life Support Membranes Inorganic Compounds Filtration Contaminants Vortices Prototypes Cylindrical Bodies Mathematical Models Reverse Osmosis Rotation Waste Water Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
