Experimental design and results obtained

Run	Experimental Design		Results
	Dosage	pH	PFS		PFPD₁		PFPD₂		PFPD₃
	(X₁)	(X₂)	Y₁	Y₂	Y₁	Y₂	Y₁	Y₂	Y₁	Y₂
1	390	7.5	66.48	66.94	65.98	66.64	72.49	73.23	68.51	67.06
2	390	7.5	67.03	66.94	67.01	66.64	73.02	73.23	67.96	67.06
3	390	6.5	63.19	; 63.98	59.79	60.32	58.20	58.74	56.35	56.39
4	430	8	64.29	64.61	64.43	64.94	72.49	71.06	64.09	64.21
5	350	8	64.84	65.16	62.89	63.91	77.78	75.47	62.43	62.74
6	390	7.5	67.58	66.94	67.53	66.64	74.60	73.23	69.61	67.06
7	430	7	68.13	67.18	65.46	64.76	68.78	67.88	62.98	63.84
8	350	7	64.29	63.33	64.43	64.25	70.37	68.59	60.77	61.26
9	390	7.5	67.58	66.94	65.98	66.64	71.96	73.23	68.51	67.06
10	390	8.5	63.74	63.25	60.82	60.14	67.72	68.79	59.12	58.23
11	310	7.5	60.99	61.15	63.92	63.58	74.07	75.32	58.01	58.60
12	390	7.5	65.38	66.94	67.01	66.64	70.90	73.23	69.06	67.06
13	470	7.5	64.29	64.44	64.95	65.13	69.84	70.20	63.54	62.65

Y₁ is the measured COD removal efficiency; Y₂ is predicted COD removal efficiency.

Table 3: Experimental design and results obtained (observed and predicted COD removal efficiency (%)).

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