CN105124741B - Method for selectively reducing content of Ni in paper-making reconstituted tobacco extraction liquid - Google Patents
Method for selectively reducing content of Ni in paper-making reconstituted tobacco extraction liquid Download PDFInfo
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- CN105124741B CN105124741B CN201510547747.3A CN201510547747A CN105124741B CN 105124741 B CN105124741 B CN 105124741B CN 201510547747 A CN201510547747 A CN 201510547747A CN 105124741 B CN105124741 B CN 105124741B
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Abstract
The invention discloses a method for selectively reducing the content of Ni in paper-making reconstituted tobacco extraction liquid. The method is characterized in that the tobacco extraction liquid prepared according to the paper-making reconstituted tobacco production technology is led into a dilution chamber of an electrodialysis device so that the content of Ni can be reduced through electrodialysis processing, and in the Ni content reducing process, the Ni removal degree is controlled through the change of conductivity in the dilution chamber or the actual content of Ni; meanwhile, the content of nicotine and the total amount of organic acid in the dilution chamber are detected to inspect selectivity of Ni removal. The method can effectively reduce the content of Ni in the reconstituted tobacco extraction liquid, meanwhile, lose of main organic acid of nicotine and tobacco can be avoided, and smoking quality of reconstituted tobacco is guaranteed to the largest extent.
Description
Technical field
The present invention relates to a kind of selectivity of papermaking-method reconstituted tobaccos Ni contents reduces method, belong to papermaking-method reconstituted tobaccos
Production technical field.
Background technology
According to Huffman harmful ingredients in flue gas list, heavy metal belongs to the main harmful substance of a class in cigarette smoke, its
In mainly include arsenic, lead, chromium, nickel etc..During burning and sucking, heavy metal can enter human body with main flume to Medicated cigarette, and in body
Each organ of body is enriched with, and then affects healthy.Therefore reducing Nicotiana tabacum L. and nickel (Ni) content in flue gas contributes to being lifted
The safety of smoking property of cigarette.
Papermaking-method reconstituted tobaccos are a kind of restructuring Nicotiana tabacum L.s, which has, and burn rate is fast, releasing content of coke tar is low, Filling power it is high with
And degrading resistance property it is good the features such as.The important step that extracting tobacco concentrated solution is produced as papermaking-method reconstituted tobaccos, its quality is
The key factor of Chip Quality is affected, but the current side for still lacking the heavy metal element effectively reduced in reconstituted tobacco extract
Method.At present, nickel ion in eliminating water is gone to have been reported in industry.Chinese patent CN104230054A discloses nickel ion in waste water
Minimizing technology, using zeolite molecular sieve heavy metal nickel ion Adsorption, clearance is in 98.5%-99%.Chinese patent
CN103011475A discloses a kind of method for removing nickel in sewage, by adding aluminium polychlorid, ion in nickeliferous sewage
Dispersant and surfactant, so as to reach the purpose for removing nickel, clearance can reach more than 99.9% for stirring, aeration.But
It is to realize that the removal of Ni ions in tobacco extraction liquid is not yet reported that using electrodialytic technique.Electrodialytic technique is handed over using ion
Selective penetrated property energy of the film to anions and canons is changed, under DC electric field effect, makes anions and canons that directional migration to occur, so as to reach
The purpose of separation, purification and concentration to electrolyte solution.The industries such as chemical industry, medicine, papermaking are had been widely used for now.China
Patent CN103182248A disclose removed in shellfish extracting solution using electrodialysis methods, the heavy metal such as lead, reducing effect compared with
For notable.Patent CN103082394A, CN103330277A and US4302308A, US4253929 are disclosed and are utilized electrodialysis
Method removes tobacco extract or the chloride ion in reconstituted tobacco extract, nitrate ion, but these patents do not investigate right
The removal effect of Ni.Chinese patent CN102406230A discloses the method for exchanging column chromatography using electrodialysis coupled ion and removes
As, Pb and Cd in tobacco extraction liquid, removal efficiency reach as high as 90%, but the patent does not investigate process to nicotine and Medicated cigarette
The impact of organoleptic quality.Common electrodialytic technique is realizing chloride ion, nitrate anion plasma compound relative to nonionic
While the selective removal of compound (Fructose, glucose, pectin etc.), Nicotiana tabacum L. ion-type active component (cigarette is also typically resulted in
Alkali and organic acid) a large amount of losses, this will cause smoking property of cigarette quality decline.Xiang Haiying etc. uses IONSEPTMIon exchange
While film removes removing chloride, discovery nicotine also reduces by more than 50%, and (in stem extracting solution, the electroosmose process of chloride ion is removed, cigarette
Careless science and technology, 2015,1:72-75).Therefore, while reconstituted tobacco extract intermediate ion removal efficiency is improved, how effectively to protect
The effective ingredient (nicotine and organic acid) for staying Nicotiana tabacum L. is electrodialysis process tobacco extraction liquid key issue urgently to be resolved hurrily, and electricity
The key problem in technology that osmotic technique is applied in papermaking-method reconstituted tobaccos production.
The content of the invention
The present invention be directed to a large amount of losing issues of nicotine existing for above-mentioned existing electrodialytic technique and one kind for developing is raw
The Ni selective regulation methods that production. art is simple, controllability is strong, can be widely applied to, in papermaking-method reconstituted tobaccos extract, make Ni
Content selectivity is reduced, and is prevented effectively from the loss of nicotine and organic acid, while Ni contents are reduced, significantly improves paper process
Reconstituted tobacco sucking quality.
Use of the present invention by univalent anion selectivity through film efficiently reduces Ni contents in tobacco extraction liquid, and has
Effect avoids the loss of nicotine and organic acid, realizes the selectivity of Ni contents reduction.
The present invention solves technical problem, adopts the following technical scheme that：
In papermaking-method reconstituted tobaccos extract of the present invention, the selectivity of Ni contents reduces method, it is characterized in that：
A, will according to prepared by papermaking-method reconstituted tobaccos production technology tobacco extraction liquid introduce electrodialysis plant desalination
Room, and water or electrolyte is added in enriched chamber；The solid content of the tobacco extraction liquid is 7-10%.
The anion exchange membrane of the electrodialysis plant passes through film for univalent anion selectivity, and cation exchange membrane is preferred
For homogeneous phase cation exchange film.
The step of tobacco extraction liquid is prepared according to papermaking-method reconstituted tobaccos production technology be：By papermaking-method reconstituted tobaccos raw material
During (cabo, Nicotiana tabacum L. and/or offal) adds agitator tank, the water of 4-10 times of weight is added, and stirring is extracted 1 hour, using Double helix
Press master carries out solid-liquid separation, and resulting Nicotiana tabacum L. aqueous solution shakes sieve coarse filtration through 80-120 purposes, then in 2500-
Centrifugation under 3500rmb speed conditions, clear liquid are the tobacco extraction liquid needed for electrodialysis process.
B, under constant current conditions tobacco extraction liquid is carried out electrodialysis process removing Ni ions, that is, carry out at nickel removal
Reason；The flow of electrodialysis process is 4-8L/min；Constant current density is 10-15mA/cm2。
C, in nickel removal processing procedure by the change of diluting compartment internal conductance rate or the actual content of Ni come control process
Degree；Detect the indoor nicotine content of desalination and organic acid total amount (including citric acid, oxalic acid and malic acid) to investigate nickel removal simultaneously
The selectivity of process；
D, by the tobacco extraction liquid after nickel removal according to papermaking-method reconstituted tobaccos production technology proceed process, for reproducing
The processing of Nicotiana tabacum L..
Under usual condition, tobacco extract is about 4.5-6.5 in acidity, its pH scope, and nicotine therein is mainly with monovalence
The form of salt is present.In theory, nicotine by monovalence selective ion exchange membrane, but can test discovery：Electrodialysis
In journey, nicotine passes through film not by univalent anion selectivity, and this is mainly likely due to the ionic hydration half of nicotine anion
Footpath is big, and univalent anion selectivity has physical preferences through film to which.So as to the present invention can be selected by univalent anion
Property through film use, while Ni contents, effectively prevent the stream of nicotine and organic acid in tobacco extraction liquid is efficiently reduced
Lose, the selectivity for realizing Ni contents is reduced.
Compared with the prior art, the present invention has the beneficial effect that：
1st, the present invention can not only effectively reduce Ni contents, while the loss of nicotine and the predominantly organic acid of Nicotiana tabacum L. can be avoided, carry
The quality of papermaking-method reconstituted tobaccos extract is risen, the sucking quality of reconstituted tobacco is farthest ensure that.
2nd, simple production process of the present invention, controllability be strong, steady quality, can be widely applied to papermaking-method reconstituted tobaccos extraction
In liquid, the selectivity of Ni contents is reduced.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail
Embodiment 1：
Tobacco extraction liquid is prepared by raw material of Nicotiana tabacum L., the tobacco extraction liquid that 450mL solid content is 8% is loaded and is installed
(wherein cavity block is Selemion 10 pairs of ion exchange membraneesTMUnivalent anion selectivity passes through film, and anode membrane is SelemionTMOne
Valency cation permselective film, effective area be 1 square metre) electrodialysis plant diluting compartment in, and in enriched chamber plus
Enter the tap water of 500mL；In 10mA/cm2Constant current density under the conditions of, carry out electrodialysis process under the flow of 5L/min
40min。
Jing is tested, and after process, in diluting compartment, the electrical conductivity of Nicotiana tabacum L. extraction is reduced to 7.92mS/cm by initial 14.61mS/cm.
Be provided with 10 pairs of conventional ion exchange membranes (anion exchange membrane be homogeneous-phase anion exchange film CJA-2, cation
Exchange membrane be homogeneous phase cation exchange film CJC-2, Hefei Ke Jia macromolecular materials Science and Technology Ltd. manufacture) electrodialysis plant
In carry out the electrodialysis process contrast test of identical tobacco extraction liquid, test parameterss in addition to ion exchange membrane used difference, other
Parameter all same.
Jing after two kinds of membrane stacks are processed, the chemical analysis results of the indoor tobacco extraction liquid of desalination are shown in Table 1, as a result show：With it is general
Logical homogeneous ion-exchange membrane is compared, monovalent ion selectivity through film under the premise of realizing that Ni contents are diminishbb, can be significantly
Improve selectivity of the Ni contents relative to nicotine, it is to avoid a large amount of losses of nicotine, while organic acid (mainly including citric acid,
Oxalic acid and malic acid) also obtain preferable reservation.
The evaluation result of the papermaking-method reconstituted tobaccos prepared by the tobacco extraction liquid after being processed using two kinds of electrodialysis membrane stacks
Show：Compared with being compareed using the non-selective removal of common homogeneous ion-exchange membrane, Jing monovalent ions selectivity is selected through film
Selecting property remove after papermaking-method reconstituted tobaccos suck strength and burn rate is all obviously improved, and organoleptic quality is integrally changed
It is kind.
Table 1
Embodiment 2：
Tobacco extraction liquid is prepared by raw material of cabo, the tobacco extraction liquid that 500mL solid content is 8% is loaded and is installed
(wherein cavity block is Selemion 10 pairs of ion exchange membraneesTMUnivalent anion selectivity passes through film；Cation exchange membrane is CJC-
2 homogeneous phase cation exchange films, Hefei Ke Jia macromolecular materials Science and Technology Ltd. manufacture) electrodialyzer diluting compartment in；Concentration
The sodium sulfate of 1.0mol/L of 500mL is added in room as initial electrolyte；In 13mA/cm2Constant current density under the conditions of
Carry out electrodialysis process 55min.Jing test, after process in diluting compartment the electrical conductivity of tobacco extraction liquid by initial 16.5mS/cm
It is reduced to 6.1mS/cm.
Be provided with 10 pairs of conventional ion exchange membranes (anion exchange membrane be homogeneous-phase anion exchange film CJA-2, cation
Exchange membrane be homogeneous phase cation exchange film CJC-2, Hefei Ke Jia macromolecular materials Science and Technology Ltd. manufacture) electrodialyzer in
The electrodialysis process contrast test of identical tobacco extraction liquid is carried out, outside test parameterss deionization exchange membrane, other parameters all same.
Jing after two kinds of membrane stacks are processed, the chemical analysis results of the indoor tobacco extraction liquid of desalination are shown in Table 2, as a result show：With it is general
Logical homogeneous-phase anion exchange film is compared, univalent anion selectivity through film on the premise of realizing that Ni contents are substantially reduced,
Selectivity of the Ni contents relative to nicotine can be greatly improved, it is to avoid a large amount of losses of nicotine, at the same organic acid also obtained compared with
Good reservation.
The evaluation result of the papermaking-method reconstituted tobaccos prepared by the tobacco extraction liquid after being processed using two kinds of electrodialysis membrane stacks
Show：Compared with the non-selective removal control of the Ni ions using common homogeneous-phase anion exchange film, Jing univalent anions are selected
Property is obviously improved through the strength of sucking of the papermaking-method reconstituted tobaccos after film selective removal, and the sense organ such as pleasant impression and zest refers to
Mark is improved.
Comparative example 1 and embodiment 2 are also known that, are selected from univalent anion in the anion exchange membrane of electrodialysis plant
Through in the case of film, cation exchange membrane is passed through from monovalent cation selectivity selecting property from homogeneous phase cation exchange film ratio
The effect of film is better, passes through film compared with monovalent cation selectivity, and the use of homogeneous phase cation exchange film can improve the removing of Ni
Rate and its selectivity.
Table 2
Claims (3)
1. in a kind of papermaking-method reconstituted tobaccos extract, the selectivity of Ni contents reduces method, it is characterized in that：
A, will according to prepared by papermaking-method reconstituted tobaccos production technology tobacco extraction liquid introduce electrodialysis plant diluting compartment, and
Water or electrolyte is added in enriched chamber；The anion exchange membrane of the electrodialysis plant is passed through for univalent anion selectivity
Film, cation exchange membrane are homogeneous phase cation exchange film；
B, electrodialysis process removing Ni ions are carried out under the conditions of constant current density to tobacco extraction liquid, that is, carried out at nickel removal
Reason；
C, in nickel removal processing procedure by the change of diluting compartment internal conductance rate or the actual content of Ni controlling nickel removal degree；
Detect the indoor nicotine content of desalination and organic acid total amount to investigate the selectivity of nickel removal process simultaneously；
D, by the tobacco extraction liquid after nickel removal according to papermaking-method reconstituted tobaccos production technology proceed process, for reconstituted tobacco
Processing.
2. in papermaking-method reconstituted tobaccos extract according to claim 1, the selectivity of Ni contents reduces method, its feature
It is：The solid content of the tobacco extraction liquid is 7-10%.
3. in papermaking-method reconstituted tobaccos extract according to claim 1, the selectivity of Ni contents reduces method, its feature
It is：The flow of electrodialysis process described in step b is 4-8L/min；Constant current density is 10-15mA/cm2。
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253929A (en) * | 1980-03-05 | 1981-03-03 | Philip Morris Incorporated | Method for denitration of tobacco employing electrodialysis |
| US4302308A (en) * | 1980-03-05 | 1981-11-24 | Philip Morris, Inc. | Method for electrolytic denitration of tobacco |
| CN101940354B (en) * | 2010-09-21 | 2012-09-12 | 川渝中烟工业有限责任公司 | Processing method of cigarette with low heavy metal Ni content |
| US9192193B2 (en) * | 2011-05-19 | 2015-11-24 | R.J. Reynolds Tobacco Company | Molecularly imprinted polymers for treating tobacco material and filtering smoke from smoking articles |
| CN102406230B (en) * | 2011-07-05 | 2013-05-08 | 中国海诚工程科技股份有限公司 | Method for removing heavy metal ions from tobacco extract |
| CN103082394A (en) * | 2013-01-25 | 2013-05-08 | 安徽中烟工业有限责任公司 | Regulation and control method for paper-making method reproducing tobacco leaf extract liquor negative ion components |
| CN103330277A (en) * | 2013-07-02 | 2013-10-02 | 云南烟草科学研究院 | Method of controlling contents of nitrate and nitrite in tobacco reconstituted in papermaking method |
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