Table 4.

Removal percentages for SBL post-treated with sequential treatments.

Parameter	VB/P.O/CuO/TiO2 Visible light	VB/P.O/CuO/TiO2 Visible light	VB/P.O/CuO/TiO2 in dark/adsorption	VB/P.O/CuO/TiO2 in dark/adsorption
Decolourisation (%)	80.3 ± 1.8	63.7 ± 0.56	13.7 ± 0.9	12.3 ± 1.1
COD Removal (%)	70.6 ± 2.9	46 ± 6.0	11.2 ± 0.6	8.4 ± 0.4
Final pH	6.3 ± 0.7	8.4 ± 1.1	5.2 ± 1.1	7.3 ± 0.7

After performing the photocatalytic treatment for 5 h on SBL previously treated with P. ostreatus, the COD removal was 80.3%, and the decolourisation percentage was 70.6%. For P. pastoris, photocatalytic treatment resulted in 63.7% COD removal and 40% decolourisation. The removal in the dark by composite adsorption (negative control) did not exceed 15% for either fungi.

COD (chemical oxygen demand), VB (viable biomass), P.O (Pleurotus ostreatus), P.P (Pichia pastoris).