Table 1 Specifications of RW-EDI

 Operating modules

–

batch

 Cell pair

–

4

 Cation exchange membrane

–

Neosepta CMX, strong acid

 Anion exchange membrane

–

Neosepta AMX, strong base

 Bipolar membrane

–

Neosepta BP, thickness 0.22 mm

 Cross surface area

cm²

195

 Cation exchange resin

–

Purolite PFC100E

 Anion exchange resin

–

Purolite PFA444

 Length

cm

17.6

 Width

cm

11.1

 Thickness

cm

< 0.3

 Feed volume

L

1

 Concentrate stream

mL min⁻¹

600

 Concentrate volume

L

1

 Electrode rinse

–

3% Na₂SO₄