3Paleologou M, Thihault A, Wong P- Y, et al. Enhancement of the current efficiency for sodium hydroxide production from sodium sulphate in a two- compartment bipolar membrane electrodialysis system [ J ]. Separation and Purification Technology, 1997,11 : 159 - 171.
4Plessen H, Munster H, Scheibitz W, et al. Verwertung von Natriumsulfat ( Utilizing of sodium sulfate) [J].Chemie- Ingenieur- Technik (in Germany), 1989,61:933 - 940.
