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Heavy metal ion adsorbent and application thereof

A technology of heavy metal ions and adsorbents, applied in the fields of application, alkali metal compounds, alkali metal oxides/hydroxides, etc., can solve the problems of bringing in non-tobacco components, etc., and achieve easy acquisition, short treatment cycle, and high removal rate Effect

Inactive Publication Date: 2017-12-19
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a heavy metal ion adsorbent, thereby solving the problem that the existing adsorbent may bring non-tobacco components into the tobacco extract

Method used

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  • Heavy metal ion adsorbent and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The heavy metal ion adsorbent of this embodiment, the preparation flow chart is as follows figure 1 As shown, the following method is used to prepare:

[0027] 1) Grind the dried tobacco stalks to obtain tobacco stalk powder with a particle size of 0.15mm~0.25mm (denoted as A powder);

[0028] 2) Weigh 5.0g of A powder, and add 100mL ethanol and NaOH solution to the alcohol-alkali modification solution (the concentration of NaOH solution is 0.4mol / L, the volume ratio of ethanol to NaOH solution is 1:1), shaker After 22 hours of shaking treatment (circular oscillation, rotation speed of 150r / min), filter with a 150-mesh nylon screen, then wash with deionized water 3 times, and dry at 55°C to obtain an alcohol-alkali modified adsorbent A.

[0029] When the heavy metal ion adsorbent of this embodiment is used to adsorb heavy metal ions in the tobacco extract, weigh 0.2g of the alcohol-alkali modified adsorbent A, add 15 mL of the tobacco extract, and oscillate and adsorb for 2.0...

Embodiment 2

[0032] The heavy metal ion adsorbent of this embodiment is prepared by the following method:

[0033] 1) Grind the dried tobacco stalks to obtain tobacco stalk powder with a particle size of 0.25mm~0.42mm (denoted as B powder);

[0034] 2) Weigh 5.0g of B powder, add 100mL methanol and KOH solution to the alcohol-alkali modification solution (the concentration of KOH solution is 0.2mol / L, the volume ratio of methanol to KOH solution is 1:2), shake on a shaker After 36h (circular oscillation, rotating speed 120r / min), filter with 150-mesh nylon screen, then wash with deionized water 3 times, and dry at 55°C to obtain the alcohol-alkali modified adsorbent.

[0035] When the heavy metal ion adsorbent of this embodiment is used to adsorb heavy metal ions in the tobacco extract, weigh 0.2g of the alcohol-alkali modified adsorbent, add 15 mL of the tobacco extract, and oscillate and adsorb for 2.5h at a rotation speed of 120r / min. Filtration separates the heavy metal ion adsorbent from th...

Embodiment 3

[0038] The heavy metal ion adsorbent of this embodiment is prepared by the following method:

[0039] 1) Grind the dried tobacco stalks to obtain tobacco stalk powder with a particle size of 0.42mm~0.84mm (denoted as C powder);

[0040] 2) Weigh 5.0g of C powder, add 100mL of mixed solvent composed of ethanol and NaOH solution (the concentration of NaOH solution is 0.6mol / L, the volume ratio of ethanol and NaOH solution is 2:1), shake on a shaker for 40h ( Circumferentially oscillate at a rotation speed of 180r / min), filter with a 150-mesh nylon screen, then wash with deionized water 3 times, and dry at 55°C to obtain an alcohol-alkali modified adsorbent.

[0041] When the adsorbent of this embodiment is used to adsorb heavy metal ions in the tobacco extract, weigh 0.2g of the alcohol-alkali modified adsorbent, add 15 mL of the tobacco extract, and oscillate and adsorb for 3.0h at a rotation speed of 200r / min. The heavy metal ion adsorbent is separated from the tobacco extract.

[00...

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Abstract

The invention relates to a heavy metal ion adsorbent and an application thereof. A preparation method of the heavy metal ion adsorbent comprises the following steps: taking main stem tobacco stalk as a raw material, and performing the steps of specific surface area increasing, immersion by a mixed solvent of low molecular alcohol and aqueous alkali, and solid-liquid separating in order to obtain the heavy metal ion adsorbent. The heavy metal ion adsorbent takes the main stem tobacco stalk as the raw material, and is obtained by the steps of specific surface area increasing as well as immersion by the mixed solvent of low molecular alcohol and aqueous alkali for modification; the tobacco stalk and the tobacco leaf are homologous, the composition of the tobacco stalk and that of the tobacco leaf are basically same, a non-tobacco component cannot be introduced into a tobacco extract, the tobacco stalk has a lot of the metal ion latent adsorption sites, so that the tobacco stalk can create conditions for heavy metal ions adsorption through modification, and the adsorption test proves that the adsorbent has good absorbing effect for heavy metal ions in the tobacco extract.

Description

Technical field [0001] The invention belongs to the field of removing heavy metal ions in a tobacco extract, and in particular relates to a heavy metal ion adsorbent and its application. Background technique [0002] Tobacco extract is a liquid obtained by extracting water-soluble substances in tobacco raw materials such as tobacco leaves, tobacco stems, and tobacco dust into water. The concentrated tobacco extract can be used to produce reconstituted tobacco. In recent years, with the development of cigarette harm reduction and coke reduction technologies, the blending rate of reconstituted tobacco in high-end cigarettes has been continuously increasing, becoming an important cigarette raw material. [0003] During the smoking process of traditional cigarettes, heavy metals in cut tobacco may be absorbed by the human body along with the migration of smoke. Therefore, excessive heavy metals in tobacco products will seriously harm human health. Studies have shown that the content ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30A24B15/24A24B15/28
CPCA24B15/24A24B15/28B01J20/24B01J20/28004B01J20/28016B01J20/28059B01J2220/4825
Inventor 王爱国张艳玲尹启生梁太波牟文君田阳阳张仕祥王建伟过伟民戴华鑫郭建华王广山胡利伟
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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