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. 2018 Oct 20;15(10):2311. doi: 10.3390/ijerph15102311

Table A3.

Pearson’s correlation coefficients for the direct effects of WAS ultrasonic disintegration (ultrasonic washer).

Variables pH SCOD NTOT PTOT Proteins Carbohydrates CST
pH 0.21 0.44 0.60 −0.16 −0.36 −0.07 −0.24
SCOD −0.28 0.04 0.06 0.25 0.33 0.65 ** −0.79 *
NTOT 0.29 0.22 0.02 −0.01 0.53 0.84 * −0.58
PTOT −0.42 −0.55 −0.51 0.55 0.51 0.44 −0.34
Proteins −0.66 ** −0.92 * −0.95 * 0.95 * 0.87 * 0.58 −0.58
Carbohydrates −0.21 −0.31 −0.47 0.56 0.88 * 0.98 * −0.91 *
CST −0.48 −0.28 −0.31 0.44 0.57 0.73 ** −0.74 **
TS −0.28 −0.17 −0.26 0.46 0.67 0.88 * −0.91 *
VS −0.40 −0.32 −0.40 0.60 0.75 ** 0.89 * −0.94 *
ΔT 0.59 0.43 0.50 −0.71 ** −0.77 * −0.76 * 0.94 *

* bold—significant correlations, p < 0.05; ** non-significant correlations taken into account in statistical analysis (r ≥ 0.65); SCOD—soluble chemical oxygen demand; NTOT—total nitrogen; PTOT—total phosphorus; CST—capillary suction time; ΔT—temperature increase.