Title
Simultaneous production of high-quality water and electrical power from aqueous feedstock’s and waste heat by high-pressure membrane distillation
Author
Kuipers, N.J.M.
Hanemaaijer, J.H.
Brouwer, H.
van Medevoort, J.
Jansen, A.
Altena, F.
van der Vleuten, P.
Bak, H.
Publication year
2015
Abstract
A new membrane distillation (MD) concept (MemPower) has been developed for the simultaneous production of high-quality water from various aqueous feedstocks with cogeneration of mechanical power (electricity). Driven by low-grade heat (waste, solar, geothermal, etc.) a pressurized distillate can be produced by operating TNO’s Memstill® process at high hydraulic pressures. These pressures are theoretically limited by the liquid entry pressure (LEP) of the membrane. The proof of principle has been shown and is based on the transport of water vapor against a hydraulic pressure gradient. Various commercially available membranes have been evaluated in order to obtain high yields in water flux and power densities. Power densities have been measured which are sufficient to drive the pumps in MD. This allows standalone Memstill® units without electricity consumption to be possible, which are fully driven by waste heat. The application of new incompressible hydrophobic membranes, combining a high permeance with a high LEP, will allow for much higher power densities. Presented at the Conference on Desalination for the Environment: Clean Water and Energy 11–15 May 2014, Limassol, Cyprus
Subject
Earth / Environmental
WT - Water Treatment
ELSS - Earth, Life and Social Sciences
Energy Efficiency
Energy
Energy / Geological Survey Netherlands
Low-grade heat
Waste heat
Solar
Desalination
Drinking water
Heat–water networks
Power
Liquid entry pressure
Membrane distillation
High pressure
Power
Cogeneration
Desalination
Drinking water
Electricity generation
Membrane
To reference this document use:
http://resolver.tudelft.nl/uuid:5d6f7789-3781-404a-a8b8-473fda9637b0
DOI
https://doi.org/10.1080/19443994.2014.946724
TNO identifier
514246
Source
Desalination and Water Treatment, 55 (10), 2766-2776
Document type
article