Chlorine concentration in NEW was found to be proportional to
chlorinated salt concentration used as electrolyte. In particular, 1 g/
L of NaCl developed about 80 mg/L of free chlorine during 30 min of
electrolysis; this concentration didn't increase during the remaining
electrolysis period. The electrolysis of tap water with 15 g/L of
KCl showed an increasing concentration of active clorine proportional
to the electrolysis period, reaching 4000 mg/L of free chlorine
after 2 h. Chlorine concentration found in electrolyzed water produced
by NaHCO3 solution was not detected in line with the low
concentration found by other authors (Fallanaj et al., 2013). The
measurement of free chlorine concentration of tap water used for
dissolving inorganic salts, was always found to be lower than 1 mg/
L, so its contribute to antimicrobial activity of NEW was considered
negligible.
Since occurrence of organic matter reduces the concentration of