Method for removing organic matters from water by photocatalytic ozonization
An organic and photocatalytic technology, applied in the field of water treatment, to achieve strong corrosion resistance, low selectivity, and high catalytic efficiency
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Embodiment 1
[0048] Steps 1)-2) are the same as in Comparative Example 1;
[0049] 3) First add 550°C calcined Fe-doped nanotube TiO to the ozone contact column 2 Catalyst, make sure its concentration is 0.1g / L, then turn on the oxygen generator and ozone generator, and after 30 minutes of aeration, introduce the raw water containing organic pollutants into the ozone contact column, and calcinate Fe-doped nanotube TiO 2 The specific surface area of the catalyst is 118m 2 / g, its preparation method is as follows: weigh 1.0g P-25 TiO 2 powder and 0.0505g of Fe(NO 3 ) 3 9H 2 O, added to 16.0mL 10mol / L NaOH solution, stirred magnetically for 0.5h, transferred to a polytetrafluoroethylene beaker, reacted at 105°C for 24h, took it out and cooled to room temperature, washed with distilled water until neutral. Soak in 0.1mol / L hydrochloric acid for 0.5h, wash again until neutral, dry at 60°C, calcinate in a muffle furnace at 550°C for 2h, and grind to obtain.
[0050] 4) Sampling through t...
Embodiment 2
[0054] Steps 1)-2) are the same as in Comparative Example 1;
[0055] 3) First add 450°C calcined Fe-doped nanotube TiO to the ozone contact column 2 Catalyst, ensure its concentration is 0.1g / L, then turn on the oxygen generator and ozone generator, and after aeration for 30 minutes, introduce the raw water containing organic pollutants into the ozone contact column, and calcinate Fe-doped nanotube TiO at 450°C above 2 The specific surface area of the catalyst is 170m 2 / g, its preparation method is as follows: weigh 1.0g P-25 TiO 2 powder and 0.0505g of Fe(NO 3 ) 3 9H 2 O, added to 16.0mL 10mol / L NaOH solution, stirred magnetically for 0.5h, transferred to a polytetrafluoroethylene beaker, reacted at 105°C for 24h, took it out and cooled to room temperature, washed with distilled water until neutral. Soak in 0.1mol / L hydrochloric acid for 0.5h, wash again until neutral, dry at 60°C, calcinate in a muffle furnace at 450°C for 2h, and grind to obtain.
[0056] 4) Sampl...
Embodiment 3
[0059] Steps 1)-2) are the same as in Comparative Example 1;
[0060] 3) First add 500°C calcined Fe-doped nanotube TiO to the ozone contact column 2 Catalyst, make sure its concentration is 0.1g / L, then turn on the oxygen generator and ozone generator, and after 30 minutes of aeration, introduce the raw water containing organic pollutants into the ozone contact column, and calcinate Fe-doped nanotube TiO at the above-mentioned 500°C 2 The specific surface area of the catalyst is 141m 2 / g, its preparation method is as follows: weigh 1.0g P-25 TiO 2 powder and 0.0505g of Fe(NO 3 ) 3 9H 2 O, added to 16.0mL 10mol / L NaOH solution, stirred magnetically for 0.5h, transferred to a polytetrafluoroethylene beaker, reacted at 105°C for 24h, took it out and cooled to room temperature, washed with distilled water until neutral. Soak in 0.1mol / L hydrochloric acid for 0.5h, wash again until neutral, dry at 60°C, calcinate in a muffle furnace at 500°C for 2h, and grind to obtain.
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