Membrane distillation application in purification and process intensification | |
| Author | Dinh Le My |
| Call Number | AIT Thesis no.EV-15-05 |
| Subject(s) | Sewage--Purification Membranes (Technology) |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering and Management |
| Publisher | Asian Institute of Technology |
| Abstract | The concept of process intensification (PI) is implemented in food industry, typically on concentrating glucose liquid. In wastewater treatment, this concept is used for removing TDS from phenol Industry (sodium sulfate salt). Membrane Distillation process with hydrophobic membrane was applied as the promising technology. The feed temperature was chosen at 70 °C for TDS test and 50 °C for glucose test. In TDS test, there is no significantly difference of flux between DCMD and SGMD configuration when salt concentration increased from 40 to 450 g/L. The energy ratio consumed in SGMD was much lower than in DCMD. Fouling resistance did not play an important role in TDS test. The highest resistance accounted for 45% that was localized in membrane resistance. Zero percent of irreversible was found after cleaning the membrane with acidic solution. However, the energy consumption ratio of DCMD system was markedly higher compared with used energy ratio in SGMD system. Therefore, SGMD is selected as the favorable configuration in TDS removal test. The application of MD on concentrating glucose was fruitful in both DCMD and SGMD configuration. In DCMD, an 83.9% flux reduction was observed after 269 hours operation due to fouling resistance accounted for 79.5% of total resistance. HF SGMD system consumed 60 hours to concentrate real glucose liquid with slowly flux reduction. Fouling resistance in SGMD did not play as a major role in resistance. The 7 times higher flux, 4 times lower time consumption, 9 times lower energy consumption ratio compared to DCMD make SGMD become an encouraging configuration in process intensification. |
| Year | 2015 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Visvanathan, C.; |
| Examination Committee(s) | Annachhatre, Ajit P. ;Loc, Nguyen Thai; |
| Scholarship Donor(s) | Greater Mekong Subregion (GMS) Scholarship; |
| Degree | Thesis (M.Sc.) - Asian Institute of Technology, 2015 |