CN103386293A - Plant material adsorbent for reducing cadmium content of tobacco extracting liquid and application of plant material adsorbent - Google Patents
Plant material adsorbent for reducing cadmium content of tobacco extracting liquid and application of plant material adsorbent Download PDFInfo
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- CN103386293A CN103386293A CN2013103157217A CN201310315721A CN103386293A CN 103386293 A CN103386293 A CN 103386293A CN 2013103157217 A CN2013103157217 A CN 2013103157217A CN 201310315721 A CN201310315721 A CN 201310315721A CN 103386293 A CN103386293 A CN 103386293A
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Abstract
The invention relates to a plant material adsorbent for reducing the cadmium content of tobacco extracting liquid. The plant material adsorbent is prepared by adopting the steps: crushing root systems of pokeberry serving as raw materials; soaking the crushed materials into diluted acid and performing modification treatment; and filtering and then washing with deionized water to finally obtain the plant material adsorbent. The tobacco extracting liquid with the reduced cadmium content is obtained by adding the plant material adsorbent into the tobacco extracting liquid, adsorbing, and filtering and removing the plant material adsorbent. The plant material adsorbent has the advantages that the root systems of the modified cadmium hyperaccumulator plants, namely, pokeberry are used as the adsorbent, the cadmium content in the root systems of the pokeberry can reach 2 percent, the pokeberry has a large number of cadmium adsorption sites, and the adsorption sites of heavy metal of the pokeberry can be released through modification by diluted acid; the modified plant material is added into the tobacco extracting liquid and can adsorb the cadmium ions in the tobacco extracting liquid, and the possibility of adding non-plant components into the tobacco extracting liquid is avoided. The plant material adsorbent is simple in treatment process, easy to operate, low in cost and reusable.
Description
Technical field
The present invention relates to reduce the technical field of cadmium content in tobacco extraction liquid, specifically a kind of adsorbent of vegetable material for reducing cadmium content in tobacco extraction liquid and application thereof.
Background technology
Tobacco extraction liquid be by suitable technological measure with tobacco leaf, offal, the water-soluble substances in the tobacco materials such as offal is extracted into a kind of liquid that obtains in water.Tobacco extraction liquid can be used for producing reconstituted tobacco after concentrated.
In recent years, fall the development of burnt technology along with Harm reduction techniques, the mix rate of reconstituted tobacco in high-grade cigarette improves constantly, and becomes important raw material of cigarette.
In the process of consumption of cigarette, the heavy metal in pipe tobacco may move along with flue gas, so in tobacco product, content of beary metal is too high may jeopardize health.The demonstration of research report, in China's part cigarette product, the content of beary metal such as lead, cadmium, arsenic will be higher than Canadian like product (O'Connor, et al Tobacco Control 2010; 19 (Suppl 2): i47-i53. doi:10.1136/tc.2009.030163.).In tobacco leaf, content of beary metal depends on a plurality of factors such as planting soil, tobacco bred, agronomic measures, from present research situation, reduce the cost that in tobacco-growing soil, content of beary metal needs very high or chronic, and by the seed selection of low cadmium absorption kind and the measure that agronomic measures reduces content of beary metal in tobacco leaf, not yet obtain at present the achievement that is fit to actual production.The present invention, by reducing the content of cadmium in tobacco extraction liquid, reduces the cadmium content of reconstituted tobacco and tobacco product.
At present, have some both at home and abroad and remove the technology of heavy metal ions from tobacco extracts, patent (application number 201110186648.9) publicity provides a kind of removal method of heavy metal ions from tobacco extract, it is characterized in that, comprise with tobacco extraction liquid after pulse filter filters first by at electrolysis unit, carrying out electrolytic treatments, tobacco extraction liquid after electrolytic treatments, through cation exchange resin column, is obtained the tobacco extraction liquid of heavy-metal ion removal.Patent (application number 201210505191.8) has declared to provide a kind of manufacture method of modification extract and for reducing the method for tobacco sheets by paper making method heavy metal ion content.Adopt modified red stilbite to be made into extract, then adopt modified red stilbite to be made into extract extract, then extract is used on the technique of the low heavy metal ion concentration that the tobacco sheets by paper making method dip coated is produced.the application of Philip Morris (Philip Morris USA Inc.) patent (US 20110083684A1) of removing heavy metal method in tobacco extraction liquid, it comprises with a series of heavy metal adsorption materials and adsorbs heavy metal ion in tobacco extraction liquid, different adsorbents can hang down in various degree and reduce Cd in tobacco extraction liquid according to type and dosage, As, Pb, the content of the heavy metals such as Se, these sorbing materials comprise: the Titanium particles of surface active, poly-grape amine sugar, calcium phosphate, silica gel through the sulfanyl replacement, the mesoporous molecular sieve that sulfanyl replaces, the Au-anatase, the gama-alumina of fine grinding, the photocatalysis titanium dioxide particle, the Au-anatase, cerium oxide etc.But in above-mentioned these methods, have to some extent that cost is higher, complex process or may mix the problems such as non-plant derived components in tobacco extraction liquid.
Summary of the invention
, for the deficiencies in the prior art, the purpose of this invention is to provide vegetable material adsorbent and the application thereof of cadmium content in a kind of easy operating, reduction tobacco extraction liquid with low cost
The objective of the invention is to be achieved through the following technical solutions:
A kind of adsorbent of vegetable material for reducing cadmium content in tobacco extraction liquid, to make by the following method: take the root systems of dyers' grapes as raw material, soak modification through pulverizing, diluted acid, use again washed with de-ionized water after filtration, finally obtain the vegetable material adsorbent.
The particle diameter that raw material is pulverized is 0.1 mm-0.3 mm.
When diluted acid soaked modification, the mass volume ratio of feed particles and diluted acid was 1:10-1; The 100(gram: milliliter), 1-8 hour processing time.
Diluted acid used is any one or its two or more mixing of watery hydrochloric acid, rare nitric acid, spirit of vinegar or dilute sulfuric acid, and concentration range is 0.01 mol/L – 0.5 mol/L.
When diluted acid soaks modification, auxiliary shaking table vibration.
The vegetable material adsorbent that the present invention is prepared joins in tobacco extraction liquid and adsorbs, the additional proportion of the relative extract of adsorbent is 1: 5-1: the 50(gram: milliliter), time of equilibrium adsorption 1.5-4 hour, make whole system be in oscillatory regime during adsorption equilibrium, or be placed on shaking table, rotating speed is 90-150 rev/mins.Finally the vegetable material absorbent filtering is removed (use aperture less than 0.1 mm(150 order and more than) nylon leaching film filter vegetable material is removed), the tobacco extraction liquid of the cadmium content that namely has been reduced.
Compared with prior art, advantage of the present invention is:
1, the present invention preferably uses the root system of the Cd hyperaccumulator dyers' grapes after modification as adsorbent.In the dyers' grapes root system, cadmium content can reach 2 %, and this material has a large amount of cadmium adsorption sites,, through the diluted acid modification, the adsorption site of heavy metal in material can be discharged; Vegetable material after modification is joined in tobacco extraction liquid, can adsorb the cadmium ion in tobacco extraction liquid, adsorbed the vegetable material of cadmium by removal, the tobacco extraction liquid of the cadmium content that just can be reduced.The cadmium ion clearance is higher, and has stopped to add the possibility of non-plant derived components in tobacco extraction liquid.
2, the present invention's preferred material used root system that is dyers' grapes, this Plants is widely distributed, and rapidly, biomass is large in growth, is easy to obtain, and cost is lower.And used vegetable material can be reused after diluted acid modification, clear water rinse.
3 steps are simple, easy operating, can directly use in the production technology link of tobacco extraction liquid, and treatment cycle is short.
Description of drawings
Fig. 1 is absorbent preparation of the present invention and uses flow chart.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, operates under laboratory condition and carry out, and the tobacco sample of use and the dosage of adsorbent are all less, but embodiment is not the restriction to the inventive method.
Experimental example 1
The preparation of tobacco extraction liquid: 2, offal sample choosing flue-cured tobacco middle part tobacco leaf, code name A and B, take respectively 1.0 g offals, put into 50 ml centrifuge tubes, add 20 ml water, be placed in 200 rev/mins of vibration 2 h on shaking table, with the nylon leaching film (150 orders more than) of aperture less than 100 microns, filter, filtrate is tobacco extraction liquid.
The preparation of adsorbent: the dyers' grapes root system is ground, get part 10 gs (namely by 40 order nylon screens can not pass through the part of 150 order nylon screens) of particle diameter between 0.1 mm and 0.3 mm, the hydrochloric acid that adds 250 ml 0.1 mol/L, shaking table vibration 2 hours, filter with 150 order nylon screens, then use the dyers' grapes root system particle 3 times after the washed with de-ionized water modification.Oven dry is stand-by adsorbent.
Get respectively tobacco extraction liquid 10 ml of offal sample A and B, add each 0.5 g adsorbent, 150 rev/mins vibrated 1 hour, filter adsorbent is separated with tobacco extraction liquid.Use cadmium content in graphite furnace atomic absorption spectrometry sample A and the front tobacco extraction liquid of B absorption to be respectively 255 μ g/L and 80 μ g/L, and after the processing of the vegetable material after the use modification, use cadmium content in the graphite furnace atomic absorption spectrometry tobacco extraction liquid to be respectively 117 μ g/L and 13 μ g/L, greatly reduce the cadmium content in tobacco extraction liquid, clearance is respectively 54 % and 84 %.
Experimental example 2
The preparation of tobacco extraction liquid: 3, offal sample choosing flue-cured tobacco middle part tobacco leaf, code name C, D and E, take respectively 0.2 g offal, put into 50 ml centrifuge tubes, add 20 ml water, be placed on shaking table 200 rev/mins of vibrations 2 hours, with the nylon leaching film (150 orders more than) of aperture less than 0.1 mm, filter, filtrate is tobacco extraction liquid.
The preparation of adsorbent: the dyers' grapes root system is ground, get part 10 gs (namely by 40 order nylon screens can not pass through the part of 150 order nylon screens) of particle diameter between 0.1 mm and 0.3 mm, the nitric acid that adds 500 ml 0.05 mol/L, shaking table vibration 2 hours, filter with 150 order nylon screens, then use the dyers' grapes root system particle 3 times after the washed with de-ionized water modification.Oven dry is stand-by adsorbent.
Get respectively tobacco extraction liquid 15 ml of offal sample C, D and E, add each 0.2 g adsorbent, 150 rev/mins vibrated 1 hour, filter adsorbent is separated with tobacco extraction liquid.Use cadmium content in graphite furnace atomic absorption spectrometry sample C, D and the front tobacco extraction liquid of E absorption to be respectively 4.5 μ g/L, 5.0 μ g/L and 4.3 μ g/L, and after the processing of the vegetable material after the use modification, use cadmium content in the graphite furnace atomic absorption spectrometry tobacco extraction liquid to be respectively 1.6 μ g/L, 1.0 μ g/L and 1.3 μ g/L, clearance is respectively 64 %, 80 % and 70 %.
The above be only of the present invention under laboratory condition embodiment, under working condition, the specific embodiment and laboratory condition are different.Should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. adsorbent of the vegetable material for reducing cadmium content in tobacco extraction liquid, it is characterized in that: be to make by the following method: take the root systems of dyers' grapes as raw material, soak modification through pulverizing, diluted acid, use again washed with de-ionized water after filtration, finally obtain the vegetable material adsorbent.
2. the adsorbent of the vegetable material for reducing cadmium content in tobacco extraction liquid according to claim 1 is characterized in that: the particle diameter that raw material is pulverized is 0.1 mm-0.3 mm.
3. the adsorbent of the vegetable material for reducing cadmium content in tobacco extraction liquid according to claim 1, it is characterized in that: when diluted acid soaks modification, the mass volume ratio of feed particles and diluted acid is 1: 10-1: the 100(gram: milliliter), and processing time 1-8 hour.
4. according to claim 1 or 3 described adsorbents of vegetable material for reducing cadmium content in tobacco extraction liquid, it is characterized in that: diluted acid used is any one or two or more mixing of watery hydrochloric acid, rare nitric acid, spirit of vinegar or dilute sulfuric acid, and concentration range is 0.01 mol/L – 0.5 mol/L.
5. the according to claim 1 or 3 described adsorbents of vegetable material for reducing cadmium content in tobacco extraction liquid, is characterized in that: when diluted acid soaks modification, assist the shaking table vibration.
6. the application process of a vegetable material adsorbent claimed in claim 1 cadmium content in reducing tobacco extraction liquid, it is characterized in that, the vegetable material adsorbent is joined in tobacco extraction liquid and adsorbs, the additional proportion of the relative extract of adsorbent is 1: 5-1: the 50(gram: milliliter), time of equilibrium adsorption 1.5-4 hour, finally the vegetable material absorbent filtering is removed the tobacco extraction liquid of the cadmium content that namely has been reduced.
7. using method according to claim 6, is characterized in that, makes whole system be in oscillatory regime during adsorption equilibrium, or be placed on shaking table, and rotating speed is 90-150 rev/mins.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353430A (en) * | 2014-11-13 | 2015-02-18 | 中国烟草总公司郑州烟草研究院 | Plant adsorbing material capable of reducing lead content of tree moss extract and application thereof |
| CN107486162A (en) * | 2017-08-14 | 2017-12-19 | 中国烟草总公司郑州烟草研究院 | A kind of tobacco source adsorbent for heavy metal and its application |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337731A (en) * | 2008-08-13 | 2009-01-07 | 彭克俭 | Method for removing cadmium in industrial wastewater by bio adsorbing agent |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337731A (en) * | 2008-08-13 | 2009-01-07 | 彭克俭 | Method for removing cadmium in industrial wastewater by bio adsorbing agent |
Non-Patent Citations (1)
| Title |
|---|
| 傅晓萍: "美洲商陆镉吸收和耐性机理研究", 《中国博士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104353430A (en) * | 2014-11-13 | 2015-02-18 | 中国烟草总公司郑州烟草研究院 | Plant adsorbing material capable of reducing lead content of tree moss extract and application thereof |
| CN107486162A (en) * | 2017-08-14 | 2017-12-19 | 中国烟草总公司郑州烟草研究院 | A kind of tobacco source adsorbent for heavy metal and its application |
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