Electrolysis
in electrolyzer :
Flow of seawater or brine between sets of electrodes
(anode and cathode) in an electrolyser connected to a source of direct
current, the chemical reactions which take place in the electrolyzer
between chlorine and caustic produced by electrolysis.
Electrochlorination
Reaction :
The direct current, passing through the seawater or
brine flowing in the electrochlorinator (electrolyzers), where the sodium
chloride is completely dissociated into the ions Na+ and
Cl-, causes the following electrochemical and chemical reactions:
Reaction at the Electrochlorinators Anode :
2Cl- ----> Cl2 + 2e- (chlorine generation
in the electrolyzer)
Reaction at the Electrochlorinator Cathode
:
2H2O + 2e- ----> H2 + 2OH-
(hydrogen evolution from electrochlorinator)
Chemical Reaction in Electrolyzer :
Cl2 + 2OH- ----> Cl- + ClO-
+ H2O
NaCl + H2O = NaOCl + H2 (hypochlorite or hypo
generation)
