Rejection Ratio of Various Solutes passing through Membrane

The DOW Membrane recently estimated the various solutes rejection ratio in their own production of membrane of FT30 Model

I think, probably most of the membrane’s rejection ratio has to be similar one and note that, solutes Molecular weight also they given, further they indicated clearly this is quick screen, particularly with changes in feed water concentration, pH and temperature factors are involve.

Solute  MW  Rejection, %
1, 1, 1-Trichloroethane  133 98
1, 2-Dibromoethane  173 15
1, 2-Dichloroethane  99 37
1, 2, 3-Trichlorobenzene  181 >57 
1, 2, 4-Trichlorobenzene  181 96
1, 2, 4-Trimethylbenzene  120 57
1, 2-Dichlorobenzene  147 70-92 
1, 3-Dichlorobenzene  147 66-69 
1, 4-Dichlorobenzene  147 61
1-Chlorododecane  204 87
1-Methylnaphthalene  142 67
2, 2’, 5, 5’-Tetrachlorobiphenyl  290 46
2, 4, 6-Trichlorophenol  197 100
2, 4-Dichlorophenol  163 93
2, 6-Dimethylphenol  122 92
2, 6-Di-Tert-Butyl-4-Methylphenol  220 96
3, 8-Dimethylphenol  122 92
3-Hydroxy-Capric Acid  188 >98 
3-Pentanone  86 74
4-Ethylphenol  122 84
4-Isopropylphenol  136 84
5-Chlorouracil  146 88
Acetic Acid  60 45
Acetone  58 70
Aluminum Nitrate  213 86
Aluminum Sulfate  342 89
Aniline  93 64-75 
Anthraquinone  208 93
Benzene  78 19
Benzoic Acid  122 92
Benzothiazole  133 79
Biphenyl  154 91
Bis (2-Ethylhexyl) Phthalate  390 94
Bromodichloromethane  163 79
Bromoform  253 >67 
Cadmium Sulfate  208 97
Caffeine  174 99
Calcium chloride  111 99
Calcium Nitrate  164 95
Carbon Tetrachloride  153 98
Cesium Chloride  168 97
Chlorobenzene  112 0-50 
Chloroform  119 71-90 
cis-1, 2-Dichloroethylene  97 20
Clofibric Acid  214 >99 
Copper Sulfate  160 99
Cyclohexanone  98 95
Dibromochloromethane  208 79
e-Caprolactum  113 85
Ethanol  46 38-70 
Ethyl Benzene  106 71
Formaldehyde  30 35
Furfural  96 35
Glucose  180 98-99 
Glycine  188 78
Heptaldehyde  114 100
Humic Acid    98
Hydrochloric Acid  36 28
Isophorone  138 96
Isopropanol  60 90
Lactic Acid (pH 2)  90 94
Lactic Acid (pH 5)  90 99
Magnesium Chloride  120 98
Magnesium Sulfate  120 99
Manganese (II) Sulfate  151 97
Methanol  32 25
Methyl Ethyl Ketone  72 73
Methyl Isobutyl Ketone  100 98
Naphthalene  128 80
Nickel Chloride  130 96-99
Nickel Sulfate  155 97-99 
o-Cresol  108 84
o-Xylene  106 67
p & m Xylene  106 38
Pentachlorophenol  266 >86 
Phenol-80%  94 65
Phosphoric Acid  96 94
Quinoline  129 97
Silica  60 98
Sodium Acetate (1%)  82 88
Sodium Bicarbonate  84 98
Sodium Bromide  103 96
Sodium Chloride  58 99
Sodium Cyanide (ph 11)  49 95
Sodium Di-H Phosphate  120 98
Sodium Fluoride  42 98
Sodium Hydrogen Sulfate  120 76
Sodium Iodide  150 97
Sodium Mono-H Phosphate  142 98
odium Nitrate  85 93-98 
Sodium Orthophosphate  164 99
Stearic Acid  204 71
Strontium Chloride  158 96
Succinic Acid  118 35
Sucrobe  342 99
Sulfuric Acid  98 84
Tetrachloroethylene  165 68-80 
Tin (II) Sulfate  215 85
Tributyl Phosphate  266 49
Trichloroethylene  131 30-43 
Trimesic Acid  210 96
Urea  60 70
Zinc Chloride  136 93
Zinc Sulfate  161 98

This table is useful depends on what type of solute handle in your plant.

Molecular weight | Rejection Ratio of Various Solutes passing through Membrane

Article by Sivanandan

T.P.Sivanandan

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