Applied Biological Chemistry

Table 2 Pseudo-first-order kinetic model parameters for removal of Remazol Navy by kefir grains at different process conditions

From: Bioremoval of reactive dye Remazol Navy by kefir grains

	Living grains				Inactivated grains
	k₁ (min⁻¹)	q_e (mg/g)	s	R²	k₁ (min⁻¹)	q_e (mg/g)	s	R²
pH
pH2	0.0263	39.936	0.8725	0.9981	0.0266	31.252	1.7494	0.9869
pH2.5	0.0143	29.995	1.0343	0.9942	0.0119	22.318	0.8509	0.9923
pH3	0.0250	16.217	1.1072	0.9810	0.0186	17.225	0.9280	0.9873
pH4	0.0378	11.005	0.7914	0.9793	0.0956	3.993	0.4647	0.9307
pH6	0.0396	6.828	0.3660	0.9886	0.5485	1.171	0.2371	0.8187
pH8	0.0598	4.852	0.3431	0.9809	0.1146	0.055	0.2028	0.6590
Temp.
18 °C	0.0363	15.520	1.0143	0.9826	0.0260	15.3778	0.8574	0.9869
25 °C	0.0250	16.217	1.1072	0.9810	0.0186	17.2250	0.9280	0.9873
32 °C	0.0293	16.175	1.1348	0.9796	0.0265	16.1644	0.7997	0.9899
39 °C	0.0241	27.738	1.0280	0.9946	0.0297	14.8776	0.9772	0.9817
Dye conc.
50 mg/L	0.0181	40.987	1.1384	0.9969	0.0099	32.8742	2.0170	0.9832
75 mg/L	0.0122	58.928	2.0451	0.9952	0.0089	43.890	2.6351	0.9829
100 mg/L	0.0124	69.707	3.0545	0.9922	0.0090	46.6072	2.7159	0.9846
200 mg/L	0.0162	92.763	6.1896	0.9809	0.0112	48.3197	3.3129	0.9794
400 mg/L	0.0214	123.417	8.5246	0.9792	0.0123	52.4215	4.5461	0.9656

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