Membrane distillation is an emerging technology for treating highly impaired wastewaters. Here a number of commercial membranes have been tested. Bulk membrane and surface properties have been determined. Permeate flux has been determined using model 20,000 ppm NaCl feed streams. A bulk membrane structural parameter has been defined. The structural parameter is used to identify membranes that display the highest permeate fluxes. These membranes were tested with 100,000 ppm NaCl solutions. The maximum feed concentration was determined. For model low-fouling feed streams, membrane surface properties such as hydrophobicity and roughness have less effect on permeate flux than bulk membrane properties.
Bibliographical noteFunding Information:
Funding for this work was provided by the Southwestern Energy through the National Science Foundation Industry/University Cooperative Research Centre for Membrane Science, Engineering and Technology, the National Science Foundation (IIP 1361809) and the University of Arkansas.
© 2017 Taylor & Francis.
Copyright 2017 Elsevier B.V., All rights reserved.
- membrane structural parameter
- permeate flux
- pore size
- total dissolved solids