Preparation method of ionic liquid-loaded palm tree bark adsorbent
A palm bark and ionic liquid technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of high consumption of toxic organic solvents, secondary pollution of the environment, and detection difficulties, etc. problems, to achieve the effect of easy industrial production, high mechanical strength and good stability
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[0019] Example 1
[0020] (1) Palm bark pretreatment: cut the palm bark into small pieces, wash with water to remove dirt and impurities, put it in a container and soak in water for 36 hours, vacuum dry and pulverize to obtain pretreated palm bark;
[0021] (2) Oxidized palm bark: In the reactor, add 0.4g sodium hydroxide, 53mL deionized water, stir to dissolve, cool to room temperature, add 38mL 30% hydrogen peroxide, mix, and then add 8g pretreated palm bark Soak at room temperature for 24 hours, then boil for 40 minutes, wash with deionized water until it is neutral after cooling, filter with suction, and dry at 80°C to obtain oxidized palm bark;
[0022] (3) Preparation of ionic liquid-loaded palm bark adsorbent: In the reactor, add 67mL epichlorohydrin and 20g oxidized palm bark respectively, keep the temperature at 70±2℃, stir and react for 50min, after cooling, then Add 8g pyromellitic dianhydride, 5g N-ethyl-3-methylpyridine tetrafluoroborate ionic liquid, keep at 50±2℃, sti...
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[0024] Example 2
[0025] (1) Palm bark pretreatment: Cut the palm bark into small pieces, wash with water to remove dirt and impurities, put it in a container, soak in water for 24 hours, vacuum dry and pulverize to obtain pretreated palm bark;
[0026] (2) Oxidized palm bark: In the reactor, add 1.0 g of sodium hydroxide and 54 mL of deionized water, stir to dissolve, cool to room temperature, add 33 mL of 30% hydrogen peroxide, mix well, and then add 12 g of pretreated palm bark Soak at room temperature for 28 hours, then boil for 40 minutes, wash with deionized water to neutrality after cooling, filter with suction, and dry at 85°C to obtain oxidized palm bark;
[0027] (3) Preparation of ionic liquid-loaded palm bark adsorbent: In the reactor, add 63mL epichlorohydrin and 10g oxidized palm bark respectively, keep the temperature at 70±2℃, stir and react for 40min, after cooling, then Add 7g pyromellitic dianhydride, 8g N-ethyl-3-methylpyridine tetrafluoroborate ionic liquid, ke...
Example Embodiment
[0028] Example 3
[0029] (1) Palm bark pretreatment: cut the palm bark into small pieces, wash with water to remove dirt and impurities, put it in a container and soak in water for 48 hours, vacuum dry and pulverize to obtain pretreated palm bark;
[0030] (2) Oxidized palm bark: In the reactor, add 0.6g sodium hydroxide, 45mL deionized water, stir to dissolve, cool to room temperature, add 39mL 30% hydrogen peroxide, mix, and then add 15g pretreated palm bark Soak at room temperature for 30 hours, then boil for 40 minutes, wash with deionized water until it is neutral after cooling, filter with suction, and dry at 90°C to obtain oxidized palm bark;
[0031] (3) Preparation of ionic liquid-loaded palm bark adsorbent: In the reactor, add 30mL epichlorohydrin and 6g oxidized palm bark respectively, keep at 70±2℃, stir and react for 60min, after cooling, then Add 4g pyromellitic dianhydride, 5g N-ethyl-3-methylpyridine tetrafluoroborate ionic liquid, keep at 50±2℃, stir, react for 24h...
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