Particle electrode for treatment of refractory organic wastewater and preparation method for particle electrode
A particle electrode and organic wastewater technology, applied in water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc., can solve problems such as difficult to achieve satisfactory results, increased difficulty in printing and dyeing wastewater treatment, and achieve close integration , low manufacturing cost and wide range of sources
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[0027] Example 1
[0028] The particle electrode of this embodiment that can be used to treat refractory organic wastewater is composed of granular activated carbon and oxides of Mn, Co and Ce supported on the granular activated carbon; the molar ratio of the Mn element to the Co element is 0.5:1; the molar ratio of Mn element to Ce element is 5:1, and the preparation method includes the following steps:
[0029] 1) Activated carbon pretreatment: soak the powdered activated carbon with 0.05mol / L dilute sulfuric acid and boil for 20min, filter and wash with deionized water to neutral, then soak with 0.05mol / L sodium hydroxide solution and boil for 20min, filter After washing to neutrality with deionized water, the washed activated carbon was ultrasonically cleaned for 20 minutes, filtered and dried at 95°C for 10 hours; the dried activated carbon was soaked in hydrogen peroxide for 1 hour for oxidation modification, and then filtered and washed. After drying at 95°C for 10 hours, t...
Example Embodiment
[0036] Example 2
[0037] The particle electrode of this embodiment that can be used to treat refractory organic wastewater is composed of granular activated carbon and oxides of Mn, Co and Ce supported on the granular activated carbon; the molar ratio of the Mn element to the Co element is 1:1; the molar ratio of Mn element to Ce element is 7.5:1, and the preparation method includes the following steps:
[0038] 1) Pretreatment of powdered activated carbon: soak the powdered activated carbon with 0.05mol / L dilute sulfuric acid and boil for 20min, filter and wash with deionized water to neutral, then soak with 0.05mol / L sodium hydroxide solution and boil for 20min After filtering, wash with deionized water to neutrality, then ultrasonically clean the cleaned activated carbon for 20 minutes, filter and dry at 95℃ for 10 hours; soak the dried activated carbon in hydrogen peroxide for 1 hour for oxidation modification, then filter After washing and drying at 95°C for 10 hours, modifi...
Example Embodiment
[0045] Example 3
[0046] The particle electrode of this embodiment that can be used to treat refractory organic wastewater is composed of granular activated carbon and oxides of Mn, Co and Ce supported on the granular activated carbon; the molar ratio of the Mn element to the Co element is 1.5:1; the molar ratio of Mn element to Ce element is 7.5:1, and the preparation method includes the following steps:
[0047] 1) Pretreatment of powdered activated carbon: soak the powdered activated carbon with 0.05mol / L dilute sulfuric acid and boil for 25min, filter and wash with deionized water to neutral, then soak with 0.05mol / L sodium hydroxide solution and boil for 25min After filtration, wash with deionized water to neutrality, then ultrasonically clean the cleaned activated carbon for 25 minutes, and dry it at 100°C for 11 hours after filtration; soak the dried activated carbon in hydrogen peroxide for 1.5 hours for oxidation modification, and then Filter, wash, and dry at 100°C for ...
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