Chemistry: electrical and wave energy – Processes and products
Patent
1984-12-10
1986-01-21
Metz, Andrew H.
Chemistry: electrical and wave energy
Processes and products
210702, 210723, 210767, C25B 116
Patent
active
045656126
ABSTRACT:
A process is disclosed for reducing sulphate ion concentration in an aqueous solution comprising sodium hydroxide. The process comprises adding sodium carbonate or bicarbonate to said aqueous solution to form an insoluble sodium carbonate-sodium sulphate double salt, removing said insoluble salt, and recovering a purified aqueous sodium hydroxide solution.
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Chemical Abstracts, vol. 44, p. 920.
Chemical Abstracts, vol. 48, pp. 3131, 9172.
Chapman Terryence
Dickerson J. H.
Metz Andrew H.
The Dow Chemical Company
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