Journal of Biological Engineering

Table 2 The levels used in the parameters used in the test

From: Improved biodegradability of hardly-decomposable wastewaters from petrochemical industry through photo-Fenton method and determination of optimum operational conditions by response surface methodology

Parameters	-alpha	Low	Center	High	+alpha
COD initial	1000	1375	1750	2125	2500
H₂O₂	1000	1750	2500	3250	4000
Fe²⁺	500	1125	1750	2375	3000
TDS	4500	6250	8000	9750	11,500
(BOD/COD)_IN	0.09
pH	3

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ISSN: 1754-1611

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