Time (hr.)

R(%)

Salt passage (%)

Jw×10-5 (gm/ cm2.s)

Salinity of pre-treated water (Row water) (mg/l)

salts (%) of TDS in feed concentration

NaCl

MgCl2

MgSO4

CaSO4

Ca(HCO3)2

0

0

100

0

42847

77

11

8

3

1

 

Salinity of post-treated water (mg/l)

Salt rejection (%)

NaCl

MgCl2

MgSO4

CaSO4

Ca(HCO3)2

8

42.4

57.62

12.85

24689.96

30.90

8.12

1.66

1.27

0.42

16

48.8

51.22

11.82

21946.02

36.02

8.44

2.36

1.46

0.49

24

60.9

39.03

8.18

16721.95

44.77

8.65

4.09

1.83

0.61

Table 8: Reverse osmosis parameter for the PVA/CA+PEG in desalination of sea water sample.