Preparation method of a zif-8@fp composite adsorption material and its application in adsorption purification treatment of copper-containing wastewater
A composite adsorption material, ZIF-8 technology, applied in the direction of adsorption water/sewage treatment, other chemical processes, water/sewage treatment, etc., can solve problems such as separation difficulties, and achieve simple process, strong adsorption selectivity, and mild conditions Effect
Inactive Publication Date: 2019-12-20
HENAN NORMAL UNIV
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Problems solved by technology
[0003] The technical problem solved by the present invention is to provide a preparation method of ZIF-8@FP composite adsorption material and its application in adsorption and purification treatment of copper-containing wastewater. The ZIF-8@FP composite adsorption material successfully solves the problem of using ZIF-8 alone. 8 When used as an adsorbent, there is a problem of separation difficulty, and it has good adsorption performance. The ZIF-8@FP composite adsorption material has strong adsorption selectivity, strong anti-interference ability, fast adsorption rate and easy separation. It is suitable for the adsorption of copper-containing wastewater Purification
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[0020] 1. Preparation of ZIF-8@FP composite adsorption material:
[0021] Preparation of pretreated filter paper
[0022] Cut the filter paper into 1cm*4cm filter paper strips and put it in a sodium hydroxide solution with a mass concentration of 10%, shake it at 30°C and 120r / min for 2h, then rinse it with distilled water until it is neutral, and put it at 60°C Dry to obtain the pretreatment filter paper for use.
[0023] Preparation of ZIF-8@FP
[0024] 1.17g Zn(NO 3 ) 2 ·6H 2 O was dissolved in 8mL of distilled water, and then pre-treated filter paper was added to soak for 20min, 22.6g of 2-methylimidazole was dissolved in 80mL of distilled water and the formed 2-methylimidazole solution was poured into the solution soaking the filter paper, at 30°C, Shake at 120r / min for 24h, let stand for 24h, wash with distilled water, and dry at 60°C to prepare ZIF-8@FP composite adsorption material. In order to prove that ZIF-8 was successfully synthesized and successfully bonded...
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The invention discloses a preparation method of a ZIF-8@FP composite adsorbing material and application of the ZIF-8@FP composite adsorbing material in adsorption and purification treatment of copper-containing wastewater. The preparation method comprises the following steps: tailoring filter paper into filter paper strips with the dimensions of 1 cm * 4 cm, putting the filter paper strips into a sodium hydroxide solution with the mass concentration of 10%, vibrating for 2 h at the temperature of 30 DEG C and at the rotating speed of 120 r / min, then washing with distilled water until the solution is neutral, and drying at the temperature of 60 DEG C to obtain pretreated filter paper for later use; and dissolving 1.17 g of Zn(NO3)2.6H2O into 8 mL of distilled water, then adding the pretreated filter paper for soaking for 20 min, dissolving 22.6 g of 2-methylimidazole into 80 mL of distilled water, pouring a formed 2-methylimidazole solution into a solution for soaking the filter paper, vibrating for 24 h at the temperature of 30 DEG C and at the rotating speed of 120 r / min, standing for 24 h, then washing with distilled water, and drying at the temperature of 60 DEG C to obtain the composite adsorbing material. The invention also discloses application of the composite adsorbing material in the adsorption and purification treatment of copper-containing wastewater. The preparation method of the composite adsorbing material disclosed by the invention is simple in technology, convenient in operation and mild in conditions; and the prepared composite adsorbing material is high in adsorptive selectivity, high in anti-jamming capability, high in adsorption rate and easy to separate.
Description
technical field [0001] The invention belongs to the technical field of composite adsorbents, and in particular relates to a preparation method of a ZIF-8@FP composite adsorbent material and its application in adsorption and purification treatment of copper-containing wastewater. Background technique [0002] ZIF-8 is a metal-organic framework material, which has the advantages of good hydrothermal stability, large specific surface area and adjustable pore size. It also has the revolving door effect that can adsorb macromolecules beyond its own pore size. It has become a research topic in the field of adsorption materials. hotspot. However, ZIF-8 as an adsorption material has the problem of difficult separation of adsorbents. This is because ZIF-8 is small and has poor sedimentation performance. In laboratories, high-speed centrifuges are usually used for separation. To apply ZIF-8 to actual wastewater treatment, it is first necessary to solve the separation problem of the a...
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IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/226B01J20/24C02F1/285C02F1/286C02F2101/20
Inventor 王治科朱韵怡陈海天叶存玲范顺利陈凌云
Owner HENAN NORMAL UNIV