Table 2 Optimization of Tap and Underground Water Slightly Acidic Electrolyzed Water production system by combining 1.0–3.0 M KCl with 4% HCl and its physicochemical properties.

From: Sanitization Efficacy of Slightly Acidic Electrolyzed Water against pure cultures of Escherichia coli, Salmonella enterica, Typhimurium, Staphylococcus aureus and Bacillus cereus spores, in Comparison with Different Water Hardness

Water source

Input

Output

Electrolyte concentration

Electrolyte Flow rate (mL/min)

Amperage (A)

Voltage (V)

pH

ACC (ppm)

ORP (mV)

Tap Water

4% HCl (control)

4.00

12.0

3.0

3.21

42.5

1060/1074

3.00

3.4

3.31

32

1018/1039

2.00

3.6

3.64

31

848/974

1.00

3.8

4.31

14.5

819/922

4% HCl + 1.0 M KCl

4.00

12.0

3.8

3.76

64

998/1058

3.00

4.1

3.98

53

960/1027

2.00

4.3

4.49

47

867/923

1.00

5.2

6.07

25

716/831

4% HCl + 2.0 M KCl

4.00

12.0

3.2

3.47

70

901/1081

3.00

3.3

3.92

62

968/1038

2.00

3.5

5.18

56.5

820/943

1.00

3.6

5.34

34

783/896

4% HCl + 3.0 M KCl

4.00

12.0

3.0

3.56

72

916/1076

3.00

3.1

3.92

67

951/1028

2.00

3.2

5.66

65.5

800/889

1.00

3.6

6.49

39

785/873

Underground Water

4% HCl (control)

4.00

12.0

2.7

2.96

45.5

1041/1082

3.00

3.1

3.50

38

942/1039

2.00

3.9

3.80

20.5

871/994

1.00

5.2

5.43

11.5

792/871

4% HCl + 1.0 M KCl

4.00

12.0

2.5

3.27

55

1013/1104

3.00

3.2

3.34

54

957/1063

2.00

4.0

4.34

42

878/1001

1.00

4.8

5.89

20

739/858

4% HCl + 2.0 M KCl

4.00

12.0

3.5

3.28

63

975/1064

3.00

3.4

3.61

59

926/1029

2.00

3.4

4.13

40

838/1023

1.00

4.0

5.65

36

792/869

4% HCl + 3.0 M KCl

4.00

12.0

3.0

3.18

69

951/1050

3.00

3.1

3.44

67

948/1101

2.00

3.1

3.71

50

934/1019

1.00

3.3

5.93

38

769/854

  1. ACC; available chlorine concentration (ppm), ORP; oxidation-reduction potential (mV).