Preparation method of high-adsorption heavy metal ion adsorbent

A technology of heavy metal ions and adsorbents, which is applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of low adsorption rate, achieve improved adsorption, improved adsorption, The effect of enhancing the ability to remove heavy metals in water

Inactive Publication Date: 2018-06-19
常州市绿意管道有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a preparation method of a high-adsorption heavy metal ion adsorbent in view of the defect that the current common adsorbent has a low adsorption rate when adsorbing heavy metal ions in wastewater

Method used

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  • Preparation method of high-adsorption heavy metal ion adsorbent

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example 1

[0021]Weigh 100g of bentonite and grind for 6min to obtain bentonite powder. Mix bentonite powder and 10% sodium chloride solution with a mass fraction of 10% in a beaker and stir for 2 hours to obtain a mixture. Wash the mixture with deionized water 6min, then wash the mixture with a silver nitrate solution with a mass fraction of 10% to remove chloride ions, continue drying in an oven at 55°C for 10min, and grind through a 100-mesh sieve to collect the mixture powder, then put the mixture powder into 100 ℃ in a muffle furnace for 1 h, and naturally cooled to room temperature to obtain sodium-based sieved bentonite powder; weigh 18 g of cetyltrimethylammonium bromide and 4 g of sodium lauryl sulfate and place in a 0.8 L Stir and dissolve in a beaker of deionized water for 12 minutes, then add 35 g of sodium-based sieved bentonite powder to the beaker, and put it in a water bath at 70°C, continue mixing and stirring for 1 hour, and cool naturally to room temperature to obtain m...

example 2

[0023] Weigh 150g of bentonite and grind for 7min to obtain bentonite powder. Mix bentonite powder and 10% sodium chloride solution with a mass fraction of 10% in a beaker and stir for 3 hours to obtain a mixture. Wash the mixture with deionized water 7min, then wash the mixture with a silver nitrate solution with a mass fraction of 10% to remove chloride ions, continue drying in an oven at 65°C for 11min, and grind through a 100-mesh sieve to collect the mixture powder, then put the mixture powder into a 110 Activate in a muffle furnace at ℃ for 1.5h, and cool naturally to room temperature to obtain sodium-based sieved bentonite powder; weigh 20g of cetyltrimethylammonium bromide and 5g of sodium lauryl sulfate and place in a 0.9 Stir and dissolve in a beaker of deionized water for 14min, then add 45g of sodium-based sieved bentonite powder to the beaker, put it in a water bath at 80°C, continue mixing and stirring for 1.5h, and cool naturally to room temperature to obtain a m...

example 3

[0025] Weigh 200g of bentonite and grind for 8min to obtain bentonite powder. Mix bentonite powder and 10% sodium chloride solution with a mass fraction of 10% in a beaker and stir for 4 hours to obtain a mixture. Wash the mixture with deionized water 8min, and then wash the mixture with a silver nitrate solution with a mass fraction of 10% to remove chloride ions, continue to dry in an oven at 75°C for 12min, and grind through a 100-mesh sieve to collect the mixture powder, and then put the mixture powder into a 120 ℃ in a muffle furnace for 2 hours, and naturally cooled to room temperature to obtain sodium-based sieved bentonite powder; weigh 24g of cetyltrimethylammonium bromide and 6g of sodium lauryl sulfate and place in a 1.0L Stir and dissolve in a beaker of deionized water for 16 minutes, then add 55 g of sodium-based sieved bentonite powder to the beaker, and put it in a water bath at 90°C, continue mixing and stirring for 2 hours, and cool naturally to room temperatur...

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Abstract

The invention discloses a preparation method of a high-adsorption heavy metal ion adsorbent and belongs to the technical field of adsorbent preparation. According to the method, firstly, adsorption treatment of heavy metals in wastewater is facilitated by the fact that bentonite has the characteristics of larger specific surface area, ion exchange capacity and better adsorptive property; then removal of cutin and wax coat on the cell wall surface is facilitated by the fact that banana peel and shaddock peel are jointly modified with an alkaline solution; the structure becomes looser and the adsorptive property of the adsorbent is improved by the fact that the alkaline solution can damage chemical bonds between cellulose; active functional groups on the surface of the adsorbent can increasewith increase of feeding amount, the larger the surface area is, the more the adsorbed heavy metal ions are, a large quantity of alkaline groups are provided to be subjected to a reaction with the heavy metal ions, the heavy metal ions are jointly adsorbed by activated carbon and self-made adsorbing mixed peel, the active functional groups are subjected to complexation with the heavy metal ions,the adsorptive property of the heavy metal ion adsorbent is further improved, and the heavy metal ion adsorbent has extensive application prospect.

Description

technical field [0001] The invention discloses a preparation method of a high-adsorption type heavy metal ion adsorbent, which belongs to the technical field of adsorbent preparation. Background technique [0002] Electroplating is one of the three major polluting industries in the world today. About 4 billion cubic meters of electroplating wastewater is discharged in my country every year, which is equivalent to the tap water supply of several large and medium-sized cities. About 50% of the electroplating wastewater does not meet the national discharge standards. The wastewater contains harmful substances such as heavy metal ions, organic compounds and inorganic compounds. These substances will definitely cause extensive and serious harm to the ecological environment and human beings when they enter the environment. [0003] The most widely involved electroplating processes in my country are copper plating, nickel, chromium, etc. Among them, nickel and copper have recyclin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/12B01J20/20B01J20/24C02F1/281C02F1/283C02F1/286C02F2101/20
Inventor 张徐洁杨亚生陈可
Owner 常州市绿意管道有限公司
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