Robs (%)a

Hydrated radius (nm)b

before recycling

after 4d of recycling

after 11d of recycling

pH of RO concentrate

-

7.40

7.14

6.90

Cl

0.332

96

95

95

N-NO 3

0.335

86

89

88

HCO 3

-c

95

97

97

SO 4 2

0.379

98

98

99

P-PO 4 3

-c

77

90

93

Na+

0.358

95

95

93

K+

0.331

97

95

93

Mg2+

0.428

97

98

98

Ca2+

0.412

96

97

98