Separation of trichloroethylene from water by sweeping-air pervaporation | |
| Author | Castillo, Lourdie Payawal |
| Call Number | AIT Thesis no.EV-93-18 |
| Subject(s) | Trichloroethylene Pervaporation |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | A state-of-the-art literature review on pervaporation membrane separation process was attempted in this study to assess its potential in environmental engineering applications. Being a relatively new separation technique, the limitedly-available literatures reviewed mostly focused on the use of the traditional, highly kinetic vacuum-operated system, with the use of sweeping-air as an emerging variation still confined to alcohol dehydration. In an effort to determine the potential applications of sweeping-air pervaporation or air perstripping in the environmental engineering field, an experimental investigation was conducted to evaluate the performance of a hydrophobic polydimethylsiloxane polyethersulfone composite capillary module in the removal and/or concomitant recovery of trichloroethylene from waste liquid streams. The effect of feed recycle rate, temperature and concentration and air moisture content and flowrate were expressed in terms of permeate flux and selectivity. Results showed that air perstripping is highly system-dependent with transport being a function of the membrane itself, the mass transfer resistances that may develop on either side of the membrane and possibly, the quality of the sweeping-air. Due to their similarities, comparisons were made with air perstripping, membrane stripping and air stripping, with the computed mass transfer coefficients (kLa) and stripping factors as criteria. Comparisons showed that air perstripping possesses some advantages over air stripping but further studies are highly recommended in this area. Lastly, a process flow diagram for the complete removal (and possible recovery) of TCE was proposed with pervaporation coupled to several conventional treatment technologies. |
| Year | 1993 |
| 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) | Visvanathan, C.;Mora, Jean-Claude; |
| Examination Committee(s) | Lee, Seong-Key;Reutergardh, Lars Baetz; |
| Scholarship Donor(s) | Government of France; |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |