| Author | Acharya, Binod Kumar |
| Call Number | AIT Thesis no.EV-96-05 |
| Subject(s) | Filters and filtration
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of
Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | The main aim of this research was to investigate the phenomena of existence of critical filtrate flux during microfiltration of suspensions. Experiments were performed to ascertain the range of transmembrane pressure difference up to which permeate flux rate had linear relationship with transmembrane pressure. At around this critical transmembrane pressure difference range, experiments were done at constant permeation velocity and varying crossflow velocity. Similar investigations were performed by maintaining constant crossflow velocity and varying the permeation velocity. A set of data with various degree of dependency of crossflow velocity and permeation rate on filtrate flux were obtained. The nature of transmembrane pressure buildup during these experiments also revealed the conditions for no fouling of membrane filter. From the experiments carried out it was found that there exists a range of critical pressure such that microfiltration done in this pressure range will lead to a theoretically constant flux rate. This pressure was found to be around 15 psi. After transmembrane pressure, the second deciding factor for no fouling of the membrane is the permeate velocity itself. Crossflow velocity was found to having an effect on the negligible decline filtrate rate such that higher crossflow velocity yielded higher filtrate flux. |
| Year | 1996 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering and Management (EV) |
| Chairperson(s) | Yang, Byung-Soo; |
| Examination Committee(s) | Visvanathan, C.;Kamei, Tasuku; |
| Scholarship Donor(s) | WHO;DAAD (Germany); |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1996 |