Solar Photo-Fenton Degradation of Electro-Optical Industry Wastewater by a Pilot-Scale Fresnel Lens Assisted IPCC Reactor

Table 4

Effect of Fresnel lens on IPCC for treatment of the electro-optical industry wastewater in different seasons.

Condition	^a𝑘COD, min^−1	^c𝑟^2	Fresnel lens effect	^b𝑘TOC, min^−1	^c𝑟^2	Fresnel lens effect
With Fresnel lens (Summer—Sep.)	0.056	0.958	1.7	0.018	0.964	1.20
Without Fresnel lens (Summer—Sep.)	0.033	0.906	—	0.015	0.969	—
With Fresnel lens (Spring—May)	0.046	0.944	1.44	0.015	0.975	1.07
Without Fresnel lens (Spring—May)	0.032	0.915	—	0.014	0.955	—
With Fresnel lens (Winter—Feb.)	0.024	0.907	1.04	0.007	0.937	1.4
With Fresnel lens (Winter—Feb.)	0.023	0.900	—	0.005	0.962	—

∗Operation condition: pH₀: 3.0, 2.0 g H₂O₂/g COD, [H₂O₂]₀/[Fe²⁺]₀ = 7.5.
^a𝑘_COD: pseudo-first order rate constant based on the degradation of COD in solution.
^b𝑘_TOC: pseudo-first order rate constant based on the degradation of TOC in solution.
^c𝑟²: coefficient of determination.