Permeate Absorbance Clarity L* a* ΔEab
Control (Sulfurized) 0.3 ± 0.03 0.0 ± 0.00 -31.9 ± 1.02 -5.3 ± 1.9 42.1 ± 0.44
Control (Unsulfurized) 0.4 ± 0.02 0.1 ± 0.00 -33.9 ± 0.52 -5.4 ± 0.1 44.3 ± 0.51
PJS 0.1 ± 0.00 0.0 ± 0.00 -22.9 ± 1.29 -12.6 ± 1.01 33.4 ± 0.52
PJWS 0.0 ± 0.00 0.0 ± 0.00 -22.0 ± 0.06 -14.0 ± 0.11 33.6 ± 0.19
PCPJS 0.1 ± 0.01 0.0 ± 0.00 -22.1 ± 0.51 -12.75± 0.42 33.5 ± 0.36
Table 3: Colour characteristics of loose NF permeate. Results represent mean values of three runs ± standard deviation.