Environmental Water Sample Degradation Data Report

September 4, 2020

Environmental Water Sample Degradation Data Report

1. Experimental principle

This experiment uses the principle of electrochemical catalytic oxidation. It uses the BDD electrode as the main reaction device to finally convert the organic matter in the water sample into CO2 and H2O, nitrate nitrogen and ammonia nitrogen into nitrogen.

2. Electrodes

2.1 Anode: Two BDD electrodes with a single crystal silicon substrate with a surface area of 200cm².
2.2 Cathode: Three titanium sheets.
2.3 Plate spacing: 3mm

3. Experimental operation

Take 1L of the water sample in the beaker, put it into the BDD electrode module (the actual anode area is 170cm2), connect the power supply, adjust the current intensity to 8A, the duty cycle to 80%, the frequency to 4000Hz, and the degradation begins. During the degradation process, the water sample is stirred with a magnetic stirrer to make it uniform. Take samples at regular intervals, record current and voltage values, and measure temperature and pH.

4. Experimental phenomenon

Picture 1 shows the experimental phenomenon at 0min degradation

Picture 2 shows the experimental phenomenon at 60min degradation

Picture 3 shows the experimental phenomenon at 120min degradation.

Picture 4 shows the experimental phenomenon at 180min degradation

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——– Boromond Team