A kind of preparation method that can adsorb heavy metal ion nano ball
A technology for adsorbing heavy metals and nano-spheres, which is applied in the fields of alkali metal compounds, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problem of high cost, and achieve the effect of convenient operation, high yield and simple process
Active Publication Date: 2014-10-08
YANCHENG YOUPU ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology
Among them, commercial activated carbon is mostly used as the adsorbent, which has strong adsorption capacity and high removal rate of heavy metals, but it needs industrial extraction and preparation, and the cost is high.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0019] This example provides a method for preparing nanospheres that can adsorb heavy metal ions. The specific steps are as follows:
[0020] (A) Add 0.1g to the reaction vessel 1g of 50nm nano-silica beads, 50ml of solvent, sonicated for 0.5h to prepare a suspension, condense and reflux for 48 hours under the protection of inert gas at 65℃, and centrifuge to obtain a crude product;
[0021] (B) Add solvent to the crude product in step (a), ultrasonic dispersion, centrifugation, and repeat 3 times to obtain a purified product;
[0022] (C) Disperse the product purified in step (b) at a concentration of 1×10 -5 mol / L Perform ion exchange in the aqueous solution for 72 hours, and centrifuge to obtain the ion exchange product;
[0023] (D) Add deionized water to the product of step (c) ion exchange, ultrasonic dispersion, centrifugation, repeat 3 times, and dry to obtain the final product.
[0024] Example 1
[0025] This example provides a method for preparing nanospheres that can adsorb...
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Abstract
The invention relates to a preparation method for a nanometer sphere capable of absorbing heavy metal ions. The preparation method comprises the following steps of: (a) adding siloxane ionic liquid and nanometer spheres in a mass proportion of 1:(1-10) and 50-100ml of solvents in a reaction container, carrying out ultrasonic processing for 0.5-1 hour to prepare suspension liquid, carrying out condensation and backflow for 24-48 hours under inert gas protection at 65-90 DEG C, and carrying out centrifuging to obtain rough products; (b) adding the solvents into the rough products obtained in the step (a) again, and repeatedly carrying out ultrasonic dispersion and the centrifuging for 3-5 times to obtain purified products; (c) dispersing the purified products obtained in the step (b) into a water solution with the concentration of 1*10<-5>-0.1mol / L for ion exchange for 24-72 hours, and carrying out the centrifuging to obtain ion-exchanged products; and (d) adding deionized water into the ion-exchanged products obtained in the step (c), repeatedly carrying out the ultrasonic dispersion and the centrifuging for 3-5 times, and drying to obtain final products. The preparation method provided by the invention has the advantages that the process is simple, the operation is convenient, and the yield is high; and the prepared nanometer sphere capable of absorbing the heavy metal ions can be used for recycling the different heavy metal ions and can be repeatedly used.
Description
Technical field [0001] The invention relates to a preparation method of nano particles, in particular to a preparation method of nano spheres capable of adsorbing heavy metal ions. Background technique [0002] With the increase of production activities in industries such as mining and metallurgy, machinery manufacturing, chemicals, electronics, and instrumentation, many production processes have produced heavy metal wastewater (such as cadmium, lead, copper, mercury, etc.). Heavy metal wastewater is one of the industrial wastewater that has the most serious environmental pollution and the greatest harm to humans. Therefore, how to treat heavy metal wastewater has received widespread attention from all walks of life. [0003] Currently, effective treatment methods for removing metal ions include: chemical precipitation, ion exchange, electrochemical treatment, membrane technology, evaporation and solidification, reverse osmosis and electrodialysis. The chemical precipitation metho...
Claims
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IPC IPC(8): B01J20/22B01J20/28B01J20/30C02F1/28C02F1/62
Inventor 严锋袁超郭江娜
Owner YANCHENG YOUPU ENVIRONMENTAL PROTECTION TECH CO LTD