Combined fresh water production and power generation using membrane distillation technology

Mahmoudi, F, Date, A and Akbarzadeh, A 2018, 'Combined fresh water production and power generation using membrane distillation technology', in Proceedings of the Chemeca 2018 Conference, Queenstown, New Zealand, 30 September - 3 October 2018, pp. 1-12.

Document type: Conference Paper
Collection: Conference Papers

Title Combined fresh water production and power generation using membrane distillation technology
Author(s) Mahmoudi, F
Date, A
Akbarzadeh, A
Year 2018
Conference name Chemeca 2018
Conference location Queenstown, New Zealand
Conference dates 30 September - 3 October 2018
Proceedings title Proceedings of the Chemeca 2018 Conference
Publisher Institution of Chemical Engineers
Place of publication New Zealand
Start page 1
End page 12
Total pages 12
Abstract The low-energy process appears as one of the most dominant priority in the recent year's desalination technologies to move forward for a sustainable fresh water production. Membrane based desalination technologies; particularly membrane distillation (MD) appears as a high promising process in the recent years, which normally operates at lower operating temperature, atmospheric pressure and could utilize low grade waste heat. This research follows a breakthrough approach and investigates the possibility to apply MD system not only as a low energy desalination process but also as a green membrane based power generation technology. In this study, a lab scale permeate gap membrane distillation (PGMD) module is developed to study the feasibility of combined water and power production (CWP) by a unique PGMD system. The study demonstrates experimentally the effect of generated hydraulic pressure on the system performance and especially on the permeate flux by designing two innovative techniques. One by pumping the permeate to different height levels and the other by pumping permeate into the pressurized air tank. The maximum hydraulic pressure within this setup was around 1 bar with hydrophobic polytetrafluoroethylene (PTFE) membrane under 80 degrees C and 15 degrees C of the fluid bulk temperatures in the inlet of hot and cold sides, respectively. The achieved results confirm the system promising potential to be developed as the state of the art membrane based power and fresh water production technology, via implementation of the advanced hydrophobic membranes with smaller pore size and the higher wetting resistance.
Subjects Wastewater Treatment Processes
Water Treatment Processes
Energy Generation, Conversion and Storage Engineering
Keyword(s) permeate gap membrane distillation
combined water and power production
hydraulic pressure
power density
liquid entry pressure.
ISBN 9781911446682
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