Table 2.

Rheological parameters modelling of UF retentates obtained at various stages of processing with addition of stabilizing salts

Sample	Bingham			Herschel–Bulkley				Power Law			Carreau–Yasudaa			Apparent viscosity, mPa.s at 50 s−1
	σ0 (Pa)	η (mPa.s)	R2	σ0 (Pa)	k	n	R2	k	n	R2	η0	η∞	R2
1×	0.631	3.56	0.848	0.598	0.013	0.738	0.878	0.572	0.099	0.749	–	–	–	17.3
2×	0.753	3.93	0.891	0.701	0.020	0.662	0.928	0.673	0.098	0.816	–	–	–	19.1
3×	0.739	6.17	0.943	0.737	0.007	0.988	0.944	0.677	0.123	0.722	–	–	–	21.7
4×	0.662	15.92	0.986	0.610	0.032	0.841	0.991	0.523	0.279	0.874	–	–	–	29.4
5× UFR	0.721	54.19	0.961	0.494	0.193	0.709	0.999	0.591	0.466	0.968	–	–	–	69.7
5× HUFR	0.703	50.37	0.961	0.484	0.182	0.706	0.999	0.572	0.458	0.967	–	–	–	66.2
5× Na–K	0.841	61.96	0.957	0.515	0.217	0.713	0.999	0.692	0.461	0.970	–	–	–	81.7
5× DSP	3.221	332.20	0.841	0.541	2.975	0.500	0.999	3.513	0.465	0.998	∞	39.74	0.999	437.0

^aCritical shear rate: 0.021 s⁻¹