TY - JOUR
T1 - Reverse osmosis filtration for ersatz space mission wastewaters
AU - Yoon, Yeomin
AU - Lueptow, Richard M.
PY - 2005
Y1 - 2005
N2 - Adequate rejection of a variety of inorganic and organic compounds is necessary if reverse osmosis (RO) and nanofiltration (NF) membranes are to be used for space mission wastewater reuse. Three ersatz space mission wastewaters having different pH, conductivities, and amounts of organic compounds were tested to determine the membrane flux and the solute rejection for five RO and two NF membranes that are commercially available. The results show that the rejection of ions depend upon the solution pH which influences electrostatic repulsion, while for organic solutes the removal depends mainly upon the solute radius and molecular structure. In addition, the rejection of dissolved organic carbon depends upon the composition of the wastewater. The ratio of solute radius (ri,s) to effective membrane pore radius (rp) can be employed to predict the rejection of ions and organic compounds.
AB - Adequate rejection of a variety of inorganic and organic compounds is necessary if reverse osmosis (RO) and nanofiltration (NF) membranes are to be used for space mission wastewater reuse. Three ersatz space mission wastewaters having different pH, conductivities, and amounts of organic compounds were tested to determine the membrane flux and the solute rejection for five RO and two NF membranes that are commercially available. The results show that the rejection of ions depend upon the solution pH which influences electrostatic repulsion, while for organic solutes the removal depends mainly upon the solute radius and molecular structure. In addition, the rejection of dissolved organic carbon depends upon the composition of the wastewater. The ratio of solute radius (ri,s) to effective membrane pore radius (rp) can be employed to predict the rejection of ions and organic compounds.
UR - http://www.scopus.com/inward/record.url?scp=85072411298&partnerID=8YFLogxK
U2 - 10.4271/2005-01-2802
DO - 10.4271/2005-01-2802
M3 - Conference article
AN - SCOPUS:85072411298
SN - 0148-7191
JO - SAE Technical Papers
JF - SAE Technical Papers
T2 - 35th International Conference on Environmental Systems, ICES 2005
Y2 - 11 July 2005 through 14 July 2005
ER -