1：Experimental Design and Method Selection:

The study involved photocatalytic degradation experiments using TiO2 catalysts with different anatase contents under UV radiation. Coagulation/flocculation pre-treatment with vegetal tannin was applied to vinasse samples.

2：Sample Selection and Data Sources:

Vinasse samples were collected from a sugarcane ethanol-sugar mill in Paraná, Brazil, during the crop/processing season.

3：List of Experimental Equipment and Materials:

Equipment included a jar test apparatus (Milan JT101), UV germicide lamp (OSRAM 15 W), photoreactor, spectrophotometers (Hach DR/2010, HACH Lange CADAS-DR 5000), XRD diffractometer (Shimadzu D6000), surface area analyzer (QuantaChrome Nova 1200), photoacoustic spectroscopy setup with xenon lamp (Oriel Corporation 68820), monochromator (Oriel Instruments 77250), microphone (Bruel and Kjaer), lock-in amplifier (EG & G5110), and UV-Vis spectrometer (Horiba VS140). Materials included TiO2 catalysts (Kronos and P25), vegetal tannin coagulant (Tanfloc? SG), deionized water, and Artemia salina for toxicity tests.

4：0). Materials included TiO2 catalysts (Kronos and P25), vegetal tannin coagulant (Tanfloc? SG), deionized water, and Artemia salina for toxicity tests. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: Vinasse was pre-treated by coagulation/flocculation or dilution. Photocatalytic tests were conducted in a batch photoreactor with 1 g catalyst in 1 L vinasse under UV light for 48 hours, with aliquots collected at various times for analysis. Toxicity was assessed using Artemia salina bioassays.

5：Data Analysis Methods:

Absorbance reduction was monitored at specific wavelengths, COD was measured, and toxicity was evaluated using Reed-Muench plot for LC50 determination. Kinetics were analyzed using Langmuir-Hinshelwood model.