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A kind of preparation method of calcium-based modified epoxy cellulose adsorption material

An adsorption material and cellulose technology, which is applied in the field of preparation of calcium-based modified epoxy cellulose adsorption materials, can solve the problems of affecting activity, affecting adsorption capacity, and not very strong adsorption capacity, and achieves low production cost and high activity. , the effect of excellent adsorption effect

Inactive Publication Date: 2017-08-08
北京中嘉卫华科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: the adsorption capacity of cellulose as a heavy metal adsorbent is not very strong at present, because cellulose forms hydrogen bonds between molecular chains and inside molecular chains, this connection mode affects its Activity, thereby affecting the problem of adsorption capacity, a preparation method of calcium-based modified epoxy cellulose adsorption material is provided. The present invention uses scallop shells and egg shells to perform pretreatment respectively, and then pulverizes, and mixes the pulverized powder and puts the Calcination in a muffle furnace to obtain calcium oxide with high activity, and mixing it with cellulose, and adding epichlorohydrin active agent to obtain calcium oxide modified epoxy cellulose adsorption material, the present invention prepares calcium oxide and adds The active agent makes the cellulose have high activity, so that the prepared adsorbent has excellent adsorption effect on various heavy metals in water, and comprehensive utilization of waste resources, low production cost, green and environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0022]First select 200g of scallop shells, wash them twice with clean water to remove impurities on the surface of the shells, then soak them in hydrochloric acid with a mass fraction of 15%, take them out after soaking for 2 hours, remove the surface organic pollutants, and then put them in Take out after soaking and rinsing twice in ionized water, dry the cleaned shells in a vacuum drying oven at -0.09MPa for 5 hours, put the dried shells into a pulverizer, and sieve to get 120-mesh shell powder; 150g of egg shells, remove the membrane inside the egg shells, soak the egg shells in 1.5L of tap water, add 4g of sodium chloride and 3mL of acetic acid with a mass fraction of 15% to the water, soak for 6h, take out and put in Dry it completely in an oven at 60°C. After drying, put the egg shells into a pulverizer and crush them into 120-mesh powder. Put the powder into a mixing mixer, add the shell powder obtained above, and stir for 40 minutes to make it completely uniform. Mixi...

example 2

[0025] First select 250g of scallop shells, wash them twice with clean water to remove impurities on the surface of the shells, then soak them in hydrochloric acid with a mass fraction of 15%, take them out after soaking for 3 hours, remove the surface organic pollutants, and then put them in After soaking and rinsing twice in ionized water, take it out, dry the cleaned shells in a vacuum drying oven at -0.085MPa for 5.5 hours, put the dried shells into a pulverizer, and sieve to get 140-mesh shell powder; Take 175g of eggshells, remove the membrane inside the eggshells, soak the eggshells in 1.8L of tap water, add 4.5g of sodium chloride and 4mL of acetic acid with a mass fraction of 15% to the water, soak for 7 hours, take out after soaking Put it in an oven at 65°C and dry it completely. After drying, put the egg shell into a pulverizer and pulverize it into a 140-mesh powder. Mix completely and uniformly; take 110g of the above-mentioned mixed powder, put it into a muffle ...

example 3

[0028] First select 300g of scallop shells, wash them three times with clean water to remove impurities on the surface of the shells, then soak them in hydrochloric acid with a mass fraction of 15%, take them out after soaking for 4 hours, remove the surface organic pollutants, and then put them in Take out after soaking and rinsing in ionized water for 3 times, dry the cleaned shells in a vacuum drying oven at -0.08MPa for 6 hours, put the dried shells into a pulverizer, and sieve to get 160-mesh shell powder; 200g of egg shells, remove the film inside the egg shells, soak the egg shells in 2L of tap water, add 5g of sodium chloride and 5mL of acetic acid with a mass fraction of 15% to the water, soak for 8h, take out after soaking and put in 70 Completely dry in an oven at ℃. After drying, put the egg shell into a pulverizer and crush it into a 160-mesh powder. Add the powder into a mixing mixer, and add the shell powder obtained above to it, and stir for 50 minutes to make i...

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Abstract

The invention discloses a preparation method of a calcium-based modified epoxy cellulose adsorbing material, belonging to the field of the adsorbing material. The invention provides a method for using calcium oxide to modify the cellulose. The preparation method comprises the steps: respectively preprocessing scallop shells and egg shells, then pulverizing the shells, mixing the pulverized powder, placing into a muffle furnace, calcining to obtain calcium oxide with high activity, mixing the calcium oxide with cellulose, and adding an epoxy chloropropane active agent to obtain the calcium oxide modified epoxy cellulose adsorbing material. By preparing the calcium oxide and adding the active agent, the cellulose is high in activity, so that the prepared adsorbing material has excellent effect on adsorbing various metals in water; and moreover, the waste resource is comprehensively used, the production cost is low, and environmental protection is realized.

Description

technical field [0001] The invention discloses a preparation method of a calcium-based modified epoxy cellulose adsorption material, which belongs to the field of adsorption materials. Background technique [0002] Today, with the increase in the amount of metal ions, toxic metals that enter the environment in various chemical states will remain, accumulate and migrate. Once they enter the human body, they will pose a lasting threat to human health and safety. Accompanied by the excessive use of oil resources, there has been resource exhaustion. The preparation of heavy metal adsorption polymeric materials from cellulose has attracted extensive attention of researchers. Cellulose is an important natural polymer with relatively stable growth. Therefore, functional modification of cellulose to prepare high value-added cellulose adsorption materials has become a research hotspot at home and abroad. [0003] Although untreated coarse eggshells have certain application value, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F101/20
CPCB01J20/041B01J20/22B01J20/24C02F1/288C02F2101/20
Inventor 王秀敏杨永强
Owner 北京中嘉卫华科技发展有限公司