Preparation method of novel rice husk-based modified carbon-silicon composite adsorbent
A carbon-silicon composite, rice husk-based technology, applied in other chemical processes, chemical instruments and methods, etc., can solve problems such as the preparation method of modified carbon-silicon composite adsorbents that have not yet been seen, and achieve the reduction of wastewater treatment problems and superior performance. , the effect of high economic value
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Embodiment 1
[0021] (1) Take an appropriate amount of rice husk and wash away impurities such as sludge with distilled water, then place it in a vacuum atmosphere sintering furnace and dry it at 150°C for 12 hours, then place the dried rice husk in a vacuum atmosphere sintering furnace at 500°C to heat Decompose for 5 hours, then mix the rice husk charcoal obtained after pyrolysis with an appropriate amount of HCl solution with a concentration of 1mol / L and put it in a flask, reflux and condense in a constant temperature oil bath and boil for 3 hours under constant stirring, then filter, and the filter residue is washed with distilled water until Neutralize and dry at 150°C for 12 hours for use.
[0022] (2) the rice husk charcoal 30g after above-mentioned pretreatment and the Na that concentration is 10% 2 CO 3 The solution was mixed at a ratio of 0.3:1 and boiled in a constant temperature oil bath for 5 hours, then the suspension was filtered, the filtrate and lotion were collected for ...
Embodiment 2
[0026] (1) Take an appropriate amount of rice husk and wash away impurities such as sludge with distilled water, then place it in a vacuum atmosphere sintering furnace and dry it at 150°C for 12 hours, then place the dried rice husk in a vacuum atmosphere sintering furnace at 500°C to heat Decompose for 5 hours, then mix the rice husk charcoal obtained after pyrolysis with an appropriate amount of HCl solution with a concentration of 1mol / L and put it in a flask, reflux and condense in a constant temperature oil bath and boil for 3 hours under constant stirring, then filter, and the filter residue is washed with distilled water until Neutralize and dry at 150°C for 12 hours for use.
[0027] (2) the rice husk charcoal 30g after above-mentioned pretreatment and the Na that concentration is 15% 2 CO 3 The solution was mixed at a ratio of 0.3:1 and boiled in a constant temperature oil bath for 5 hours, then the suspension was filtered, the filtrate and lotion were collected for ...
Embodiment 3
[0031] (1) Take an appropriate amount of rice husk and wash away impurities such as sludge with distilled water, then place it in a vacuum atmosphere sintering furnace and dry it at 150°C for 12 hours, then place the dried rice husk in a vacuum atmosphere sintering furnace at 500°C to heat Decompose for 5 hours, then mix the rice husk charcoal obtained after pyrolysis with an appropriate amount of HCl solution with a concentration of 1mol / L and put it in a flask, reflux and condense in a constant temperature oil bath and boil for 3 hours under constant stirring, then filter, and the filter residue is washed with distilled water until Neutralize and dry at 150°C for 12 hours for use.
[0032] (2) the rice husk charcoal 30g after above-mentioned pretreatment and the Na that concentration is 20% 2 CO 3 The solution was mixed at a ratio of 0.3:1 and boiled in a constant temperature oil bath for 5 hours, then the suspension was filtered, the filtrate and lotion were collected for ...
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