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Use of bipolar membranes for ion exchange resin regenerant production
Author(s) -
Bolton H. R.
Publication year - 1992
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280540407
Subject(s) - electrodialysis , membrane , hydrochloric acid , sodium hydroxide , ion exchange , chemistry , process engineering , pulp and paper industry , environmental science , chloride , waste management , chemical engineering , biochemical engineering , engineering , ion , inorganic chemistry , organic chemistry , biochemistry
The utilisation of electrodialysis bipolar membranes to prepare hydrochloric acid and sodium hydroxide from a sodium chloride solution was tested at West Thurrock Power Station. The product chemicals were then used to regenerate full scale ion exchange units on the site and the results compared to normal operation with commercial regenerants. The large scale pilot plant was found to operate satisfactorily and the quality of produced chemicals was in line with predictions. The adoption of on‐site, on‐demand production of regenerants could offer immediate advantages for remote installations which would otherwise be dependent on the transport of dangerous chemicals over long distances. In the longer term further advances in the selectivity of commercially available membranes and the prevailing cost of commercial regenerants are considered the key factors governing the future rate of implementation of this novel process.