Modification method for effectively improving adsorption performance of activated carbon on trace ammonia
An adsorption performance, activated carbon technology, applied in the field of ambient air purification, can solve problems such as ammonia pollution, and achieve the effects of enhanced adsorption performance, excellent market prospects, and important environmental protection.
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Embodiment 1
[0020] Take 150g of activated carbon particles, put them in reaction vessel 1, add 500mL of nitric acid solution with a mass concentration of 10%, maintain a constant temperature reaction environment in a water bath, the temperature is 60°C, and the stirring reaction time is 2h; The activated carbon was washed with deionized water to make the pH of the washing liquid reach 5~6, and then dried at 80°C; the initially treated activated carbon was added to the reaction vessel 2, and 500 mL of citric acid aqueous solution, lemon The mass concentration of the acid is 10%, the oil bath method is used to maintain a constant temperature reaction environment, the temperature is 120 ° C, and the reaction is stirred for 4 hours; the activated carbon that has been preliminarily treated is filtered out and washed with deionized water to make the pH of the washing liquid reach 5~6; Add activated carbon to reaction vessel 3, add 500 mL of butane tetracarboxylic acid aqueous solution, the mass ...
Embodiment 2
[0022] Take 150g of activated carbon particles, put them in the first reaction vessel, add 500mL of nitric acid solution with a mass concentration of 40%, maintain a constant temperature reaction environment in a water bath, the temperature is 60°C, and the stirring reaction time is 2h; Wash the treated activated carbon with deionized water to make the pH of the washing liquid reach 5~6, and then dry it at 80°C; add the preliminary treated activated carbon into the second reaction vessel, and add 500mL of citric acid aqueous solution into the reaction vessel , the mass concentration of citric acid is 10%, the oil bath method is used to maintain a constant temperature reaction environment, the temperature is 120 ° C, and the reaction is stirred for 4 hours; the activated carbon that has been preliminarily treated is filtered out and washed with deionized water to make the pH of the washing liquid reach 5 ~6; Add activated carbon into the third reaction vessel, add 500mL of butan...
Embodiment 3
[0024] Take 150g of activated carbon particles, put them in the first reaction vessel, add 500mL of nitric acid solution with a mass concentration of 40%, maintain a constant temperature reaction environment in a water bath, the temperature is 60°C, and the stirring reaction time is 2h; Wash the treated activated carbon with deionized water to make the pH of the washing liquid reach 5~6, and then dry it at 80°C; add the preliminary treated activated carbon into the second reaction vessel, and add 500mL of citric acid aqueous solution into the reaction vessel , the mass concentration of citric acid is 25%, and the oil bath method is used to maintain a constant temperature reaction environment. ~6; Add activated carbon into the third reaction vessel, add 500mL of butane tetracarboxylic acid aqueous solution, the mass concentration of butane tetracarboxylic acid is 25%, maintain a constant temperature reaction environment in an oil bath, the temperature is 120 ° C, and stir the re...
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