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Preparation method of silicon-based hybrid aerogel balls for removing copper ions in water

A technology of airgel pellets and copper ions, which is applied in chemical instruments and methods, inorganic chemistry, water pollutants, etc., can solve the problems of difficult regeneration and short service life of adsorbents, and achieve low recycling costs and good ball formation Good, the effect of reducing recycling costs

Inactive Publication Date: 2016-12-14
YANGZHOU TIANCHEN FINE CHEM +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adsorption is a fast and effective treatment method, but the service life of the adsorbent is short and regeneration is difficult

Method used

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  • Preparation method of silicon-based hybrid aerogel balls for removing copper ions in water
  • Preparation method of silicon-based hybrid aerogel balls for removing copper ions in water
  • Preparation method of silicon-based hybrid aerogel balls for removing copper ions in water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] After adding 1.5mg of sodium alginate to 100mL of water to fully dissolve, the solution uses an ultrasonic cleaner to remove air bubbles in the solution. Mix the sodium alginate aqueous solution with water glass at a volume ratio of 4:1, stir evenly, and drop the mixed solution at a height of 25 cm into the continuously stirring calcium chloride aqueous solution, the concentration of calcium chloride is 25 mg / L, and the volume is 100 mL. Form into pellets.

[0030] Soak the balls in ethanol for 8 hours, then soak the balls in the ethanol solution of 15% silane coupling agent KH550, take out the balls after 8 hours, wash them with water and absolute ethanol, and put them at 60℃ The samples were obtained by drying.

Embodiment 2

[0032] After adding 1.5mg of sodium alginate to 100mL of water to fully dissolve, the solution uses an ultrasonic cleaner to remove air bubbles in the solution. Mix the sodium alginate aqueous solution with water glass at a volume ratio of 5:1, stir evenly, and drop the mixed solution at a height of 25 cm into the continuously stirring calcium chloride aqueous solution, the concentration of calcium chloride is 25mg / L, and the volume is 100mL. Form into pellets.

[0033] Soak the balls in ethanol for 8 hours, then soak the balls in the ethanol solution of 15% silane coupling agent KH550, take out the balls after 8 hours, wash them with water and absolute ethanol, and put them at 60℃ The samples were obtained by drying.

Embodiment 3

[0035] After adding 1.5mg of sodium alginate to 100mL of water to fully dissolve, the solution uses an ultrasonic cleaner to remove air bubbles in the solution. Mix the sodium alginate aqueous solution with water glass at a volume ratio of 6:1, stir evenly, and drop the mixed solution at a height of 25 cm into the continuously stirring calcium chloride aqueous solution, the concentration of calcium chloride is 25mg / L, and the volume is 100mL. Form into pellets.

[0036] Soak the balls in ethanol for 8 hours, then soak the balls in an ethanol solution of 15% silane coupling agent KH550, take out the balls after 8 hours, wash them with water and anhydrous, and dry them at 60°C Get a sample.

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PUM

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Abstract

The invention discloses a preparation method of silicon-based hybrid aerogel balls for removing copper ions in water, and belongs to the technical field of novel materials. According to the invention, sodium alginate and water glass are used as raw materials for preparing the silicon-based hybrid aerogel balls, the silicon-based hybrid aerogel balls are modified by a silane coupling agent, and the balls are applied to treatment of copper ion wastewater to have a very good adsorption effect. Furthermore, the silicon-based hybrid aerogel balls can be reused to lower the recovery cost.

Description

technical field [0001] The invention belongs to the technical field of new materials, and in particular relates to a preparation method of silicon-based hybrid airgel pellets. Background technique [0002] With the development of modern industry, the demand for copper is increasing, and the mining of copper mines is also continuously strengthened. In the copper mine treatment wastewater, a large amount of copper ions are discharged into the water body along with the wastewater, which not only causes environmental pollution but also wastes resources. It is very important to find a fast and efficient method for recovering copper ions. The patent document with the patent application number 201510783734.6 discloses a method for removing copper ions in electroplating wastewater, using heavy metal trapping agents combined with controlled addition of flocculants to achieve a high removal effect. The patent document with the patent application number 201510399023.9 ​​discloses a st...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F101/20C02F103/10
CPCB01J20/24B01J20/28019B01J20/28047C02F1/288C02F2101/20C02F2103/10
Inventor 谢吉民韩合坤魏巍陈国云陆俊炜刘润兴余耀嵇建华荆俊杰胡青华
Owner YANGZHOU TIANCHEN FINE CHEM
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