CN102948925A - Application method of cigarette smoke heavy metal adsorbent - Google Patents
Application method of cigarette smoke heavy metal adsorbent Download PDFInfo
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- CN102948925A CN102948925A CN201210491301XA CN201210491301A CN102948925A CN 102948925 A CN102948925 A CN 102948925A CN 201210491301X A CN201210491301X A CN 201210491301XA CN 201210491301 A CN201210491301 A CN 201210491301A CN 102948925 A CN102948925 A CN 102948925A
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Abstract
The invention discloses an application method of a cigarette smoke heavy metal adsorbent. The adsorbent is prepared in such a way that activated silica gel and a certain proportional polyethyleneimine water solution are mixed and stirred uniformly in an isovolumetric manner, and the mixture is completely dried by a series of drying modes to obtain the adsorbent. The adsorbent prepared by the invention can well adsorb heavy metal in the cigarette smoke, is large in adsorption capacity and quick in speed. The preparation method of the adsorbent is simple and easy to operate, less raw materials are needed, the production cost is low, the adsorbent is suitable for large-scale industrial production, the disadvantage that physical characteristics of the silica gel particles are damaged in the preparation process is avoided, and the secondary granulation is not needed.
Description
Technical field
The invention belongs to Harm reduction techniques and environmental protection technical field, relate in particular to the application process of the cigarette flue gas heavy metal adsorbent of a kind of energy large-scale production.
Background technology
The World Health Organization (WHO) and " Tobacco Control framework treaty " are more and more stricter to the control of tobacco product; Along with improving constantly of living standard, the consumer to self healthy protect consciousness and environmental consciousness also in continuous enhancing, also more and more higher to the requirement of safety cigarette.Therefore, the cigarette product of the low harm of exploitation is a kind of trend.
Heavy metal in the cigarette smoke is mainly derived from tobacco itself, and the heavy metal element in the tobacco is mainly derived from and contains Heavy metal contaminated soil, water and air etc. in the tobacco planting environment.The heavy metal elements such as the lead in the tobacco, arsenic, cadmium, chromium, mercury can enter human body by flue gas with the form of aerosol or metal oxide, after forming accumulation, may damage to human body.Research finds that the most absorbable heavy metal is cadmium in the flue gas of a cigarette.For the control of content of beary metal in the tobacco, two kinds of thinkings of main employing are the effective control to tobacco leaf home environment heavy metal on the one hand at present, and the emphasis of research concentrates on tobacco leaf screening varieties and biotechnology aspect.Produce the content of cigarette district heavy metal in soil and exist form directly to affect tobacco leaf to the absorptivity of heavy metal, the content of soluble heavy metal is higher in the general soil, tobacco leaf is also higher to the absorptivity of heavy metal, and its absorptivity is subject to the impact of the factors such as soil pH, clay, organic matter and cation exchange capacity.Be to adopt some technology to reduce content of beary metal in the main flume in the production of cigarettes process on the other hand, the emphasis of research concentrates on filter tip absorption and holds back technology.It is generally acknowledged the heavy metal particles thing in the adsorbable flue gas of filter tip, reduce it to the harm of human body.Developed now preferably NEW TYPE OF COMPOSITE filter tip of active carbon filter and some other effects, poisonous and hazardous trace element (cadmium, nickel, arsenic) and organic compound etc. had suction-operated, have result of study to show that active carbon filter is respectively 4.25,3.58 and 1.61 times of acetate fiber filter tip to the adsorption capacity of Cd, Ni and As, adsorption effect obviously strengthens.The composite filter tip of acetate fiber and the preparation of yellow Siberian cocklebur can effectively reduce cadmium and plumbous paramorphogen in the cigarette main flume, sucks the accumulation exposure dose of heavy metal lead, cadmium for the minimizing smoker and has positive effect with deposition in lung.In addition, the active carbon composite filter tip of chitosan-containing has stronger selection absorbability to the heavy metal in the flue gas and other harmful substances.The result of study of Zhou Guojun etc. shows, a kind of in copper chlorophyll and the chlorophyllin sodium or two kinds are joined triacetin three esters, sprays in tow, perhaps is prepared into 40-80 order particle and adds in the mouth rod, can effectively catching heavy metal.Wang Ying etc. studies show that, CNT has more intense selective absorption effect to heavy metals such as Cd, Pb.
The existence of Silica Surface porous has increased the specific area of adsorbent, has reduced the diffusional resistance of solute, is beneficial to reach fast adsorption equilibrium.Simultaneously, make on the adsorbent band amino, carboxyl etc. functional groups come huge legendary turtle to close by finishing or complexation heavy metal ion also is an important channel of improving absorption property.
Polymine is a kind of high molecular weight water soluble polymer, has a large amount of amido N atoms on its strand, and the counterweight metal has very strong huge legendary turtle and closes ability.This specific character has caused the extensive concern of Chinese scholars, and has been applied to numerous research fields.In the adsorption applications of reality, because the water miscible characteristics of polymine need to be fixed the water-soluble polyethylene imines by selecting suitable carrier, guarantee the operability of its absorption heavy metal ions in wastewater.The performance of carrier is directly connected to the effect of adsorbent, and is easy and simple to handle, modification effect good and the polyethylene imine beautify method of not destroying the original physical behavior of silica gel is an important research direction.
Summary of the invention
The application process that the purpose of this invention is to provide the cigarette flue gas heavy metal adsorbent of the good polyethylene imine beautify of a kind of adsorption effect, the heavy metal that this cigarette flue gas heavy metal adsorbent not only adsorbs in the cigarette smoke is effective, and manufacture craft is simple, low production cost and be suitable for large-scale production.
The application process of heavy metal absorbent in a kind of cigarette smoke is to join in the filter tip of cigarette, is used for the heavy metal of absorption flue gas; The addition of described heavy metal absorbent is that 30mg/ props up;
Described heavy metal absorbent preparation method specifically may further comprise the steps:
(1) silica gel is placed 120 ℃ of baking 5 ~ 8h activate, make Silica Surface generate the silicon hydroxyl;
(2) adopt equi-volume impregnating, silica gel after activating is immersed in the polyethyleneimine: amine aqueous solution of mass percent 30%-70%, stirs evenly, 80-120 ℃ of baking 2-6 hour, then place under the infrared lamp baking 3-7 hour, dry by the fire to faint yellow solid at 120 ℃ at last and get final product;
The mass ratio of described polymine and silica gel is 2.5 ~ 15:100; Be preferably 10:100.
Described silica gel particle size is 40 ~ 60 orders;
The molecular weight of described polymine is that 70000 polymine or molecular weight are 10000 polymine.
Be preferably 70000 high molecular weight polyethyleneimine.
The cigarette behind the adsorbent of the present invention is added in suction, collects respectively granule phase substance and the gas gas-phase objects of flue gas, detects wherein content of beary metal with ICPMS, simultaneously the conventional ingredients such as the nicotine in detection contrast cigarette sample and the test cigarette sample main flume, tar.
The present invention compared with prior art, its maximum characteristics are:
1, use first the polymine uniform load on the silica gel after the activation, make the functional groups such as a large amount of amino and carboxyl on the adsorbent band by finishing, greatly improved the selective of the adsorption capacity of adsorbent and absorption by chelating or complexing, and this adsorbent added in the cigarette filter first, obtained the effect of good Adsorption of Heavy Metals.
2, the preparation method of the heavy metal absorbent of polyethylene imine beautify of the present invention, simple to operate, need not crosslinking agent, reduce production cost and be suitable for large-scale production.
3, the heavy metal absorbent of polyethylene imine beautify of the present invention in the preparation, because silica gel activates and does not activate by acid treatment by direct heating means, the mechanical strength that has greatly kept silica gel, situation about having been blended when having avoided in synthetic, stirring, overcome the shortcoming that original physical behavior of silica gel was destroyed after adsorbent activated in manufacturing process, thereby because stir to make silica gel has been stirred the again drawback of granulation of powdered after having avoided absorbent preparation to finish.Simplify experimental implementation and kept original physical absorption attribute of silica gel.
4, this adsorbent can be realized quick heavy metal adsorption.The general reaction time of the heavy metal adsorption of aqueous phase can be longer, and the heavy metal adsorption reaction time in the cigarette smoke is very short, and only be Millisecond the time of contact of flue gas and adsorbent during cigarette smoking, requires adsorbent can realize fast heavy metal adsorption.And the existence of the Silica Surface porous that the present invention selects has increased the specific area of adsorbent, reduced the diffusional resistance of solute, be beneficial to and reach fast adsorption equilibrium, more be suitable for being combined with polymine being applied to Adsorption of Heavy Metals in the gas phase than general carrier, in a word, the combination of silica gel and polymine can be found out from the data of the embodiment of the invention so that adsorbent heavy metal in gas phase ability of arresting strengthens greatly, obtain beyond thought effect.
The specific embodiment
Following examples are intended to more specifically describe the present invention rather than limitation of the invention further, and the present invention can implement by the described arbitrary mode of summary of the invention.
Embodiment one
The silica gel that will be dried to first constant weight is crossed 40 ~ 60 mesh sieves, then places 120 ℃ of baking oven high-temperature heating 5 ~ 8h to activate silica gel after obtaining activating.
Embodiment two
Get the 0.50g molecular weight and be 10000 low molecular weight polyethylene imines and be dissolved in the 25ml deionized water, fully after the dissolving, the silica gel that takes by weighing after the 10.0g activation places this aqueous solution, stirs.Then 120 ℃ of bakings oven dry in 6 hours moisture place under the infrared lamp baking 6 hours in baking oven, at last in baking oven 120 ℃ of bakings to faint yellow granular solids.Obtain that the mass ratio of polymine and silica gel is the low molecular weight polyethylene imine beautify adsorbent of 5:100 in the adsorbent.
The standard that adds the 30mg adsorbent according to every cigarette joins adsorbent in the filter tip of cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under the Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out the heavy metal detection, carry out simultaneously the check experiment of blank cigarette sample.The reduced rate of the main flume conventional ingredient of test cigarette and contrast cigarette and heavy metal cadmium, lead is as shown in the table.
Embodiment three
Get the 1.00g molecular weight and be 10000 low molecular weight polyethylene imines and be dissolved in the 25ml deionized water, fully after the dissolving, the silica gel that takes by weighing after the 10.0g activation places this aqueous solution, stirs.Then 120 ℃ of bakings oven dry in 4 hours moisture place under the infrared lamp baking 6 hours in baking oven, at last in baking oven 120 ℃ of bakings to faint yellow granular solids.Obtain that the mass ratio of polymine and silica gel is the low molecular weight polyethylene imine beautify adsorbent of 10:100 in the adsorbent.
The standard that adds the 30mg adsorbent according to every cigarette joins adsorbent in the filter tip of cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under the Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out the heavy metal detection, carry out simultaneously the check experiment of blank cigarette sample.The reduced rate of the main flume conventional ingredient of test cigarette and contrast cigarette and heavy metal cadmium, lead is as shown in the table.
Embodiment four
Get the 1.50g molecular weight and be 10000 low molecular weight polyethylene imines and be dissolved in the 25ml deionized water, fully after the dissolving, the silica gel that takes by weighing after the 10.0g activation places this aqueous solution, stirs.Then 120 ℃ of bakings oven dry in 4 hours moisture place under the infrared lamp baking 6 hours in baking oven, at last in baking oven 120 ℃ of bakings to faint yellow granular solids.Obtain that the mass ratio of polymine and silica gel is the low molecular weight polyethylene imine beautify adsorbent of 15:100 in the adsorbent.
The standard that adds the 30mg adsorbent according to every cigarette joins adsorbent in the filter tip of cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under the Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out the heavy metal detection, carry out simultaneously the check experiment of blank cigarette sample.The reduced rate of the main flume conventional ingredient of test cigarette and contrast cigarette and heavy metal cadmium, lead is as shown in the table.
Embodiment five
Get the 0.50g molecular weight and be 70000 high molecular weight polyethyleneimine 50% aqueous solution and be dissolved in the 25ml deionized water, fully after the dissolving, the silica gel that takes by weighing after the 10.0g activation places this aqueous solution, stirs.Then 120 ℃ of bakings oven dry in 5 hours moisture place under the infrared lamp baking 6 hours in baking oven, at last in baking oven 120 ℃ of bakings to faint yellow granular solids.The high molecular weight polyethyleneimine that obtains the mass ratio of polymine and silica gel in the adsorbent and be 2.5:100 is modified adsorbent.
The standard that adds the 30mg adsorbent according to every cigarette joins adsorbent in the filter tip of cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under the Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out the heavy metal detection, carry out simultaneously the check experiment of blank cigarette sample.The reduced rate of the main flume conventional ingredient of test cigarette and contrast cigarette and heavy metal cadmium, lead is as shown in the table.
Embodiment six
Get the 1.00g molecular weight and be 70000 high molecular weight polyethyleneimine 50% aqueous solution and be dissolved in the 25ml deionized water, fully after the dissolving, the silica gel that takes by weighing after the 10.0g activation places this aqueous solution, stirs.Then 120 ℃ of bakings oven dry in 6 hours moisture place under the infrared lamp baking 6 hours in baking oven, at last in baking oven 120 ℃ of bakings to faint yellow granular solids.The high molecular weight polyethyleneimine that obtains the mass ratio of polymine and silica gel in the adsorbent and be 5:100 is modified adsorbent.
The standard that adds the 30mg adsorbent according to every cigarette joins adsorbent in the filter tip of cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under the Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out the heavy metal detection, carry out simultaneously the check experiment of blank cigarette sample.The reduced rate of the main flume conventional ingredient of test cigarette and contrast cigarette and heavy metal cadmium, lead is as shown in the table.
Embodiment seven
Get the 1.60g molecular weight and be 70000 high molecular weight polyethyleneimine 50% aqueous solution and be dissolved in the 25ml deionized water, fully after the dissolving, the silica gel that takes by weighing after the 10.0g activation places this aqueous solution, stirs evenly.Then 120 ℃ of bakings oven dry in 6 hours most of moisture places under the infrared lamp baking 6 hours in baking oven, at last in baking oven 120 ℃ of bakings to faint yellow granular solids.The high molecular weight polyethyleneimine that obtains the mass ratio of polymine and silica gel in the adsorbent and be 8:100 is modified adsorbent.
The standard that adds the 30mg adsorbent according to every cigarette joins adsorbent in the filter tip of cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under the Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out the heavy metal detection, carry out simultaneously the check experiment of blank cigarette sample.The reduced rate of the main flume conventional ingredient of test cigarette and contrast cigarette and heavy metal cadmium, lead is as shown in the table.
Claims (1)
1. the application process of heavy metal absorbent in the cigarette smoke is characterized in that, is to join in the filter tip of cigarette, is used for the heavy metal of absorption flue gas; The addition of described heavy metal absorbent is that 30mg/ props up;
Described heavy metal absorbent preparation method specifically may further comprise the steps:
(1) silica gel is placed 120 ℃ of baking 5 ~ 8h activate, make Silica Surface generate the silicon hydroxyl;
(2) adopt equi-volume impregnating, silica gel after activating is immersed in the polyethyleneimine: amine aqueous solution of mass percent 30%-70%, stirs evenly, 80-120 ℃ of baking 2-6 hour, then place under the infrared lamp baking 3-7 hour, dry by the fire to faint yellow solid at 120 ℃ at last and get final product;
The mass ratio of described polymine and silica gel is 2.5 ~ 15:100;
Described silica gel particle size is 40 ~ 60 orders;
The molecular weight of described polymine is that 70000 polymine or molecular weight are 10000 polymine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210491301.XA CN102948925B (en) | 2012-11-27 | 2012-11-27 | Application method of cigarette smoke heavy metal adsorbent |
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| CN201210491301.XA CN102948925B (en) | 2012-11-27 | 2012-11-27 | Application method of cigarette smoke heavy metal adsorbent |
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| CN102948925A true CN102948925A (en) | 2013-03-06 |
| CN102948925B CN102948925B (en) | 2014-06-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105919159A (en) * | 2016-05-27 | 2016-09-07 | 阜阳卷烟材料厂 | Cigarette filter stick capable of removing heavy metals in cigarette smoke |
| CN106954891A (en) * | 2017-04-10 | 2017-07-18 | 滁州卷烟材料厂 | A kind of filter tip for being used to adsorb heavy metal in cigarette smoke |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716063A (en) * | 1970-09-25 | 1973-02-13 | Brown & Williamson Tobacco | Selective gas phase filter material |
| US4266561A (en) * | 1978-04-10 | 1981-05-12 | Brown & Williamson Tobacco Corporation | Tobacco smoke filtering compositions |
| CN1044037A (en) * | 1988-12-20 | 1990-07-25 | 赫尔克里斯有限公司 | The reservation of acetaldehyde in the smoke from cigarette and nicotine byproduct and the transmission of selection |
| CN102499479A (en) * | 2011-11-03 | 2012-06-20 | 湖南中烟工业有限责任公司 | Complex adsorbent capable of reducing release amount of heavy metals in mainstream smoke of cigarettes, preparation method for complex adsorbent and application of complex adsorbent |
-
2012
- 2012-11-27 CN CN201210491301.XA patent/CN102948925B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3716063A (en) * | 1970-09-25 | 1973-02-13 | Brown & Williamson Tobacco | Selective gas phase filter material |
| US4266561A (en) * | 1978-04-10 | 1981-05-12 | Brown & Williamson Tobacco Corporation | Tobacco smoke filtering compositions |
| CN1044037A (en) * | 1988-12-20 | 1990-07-25 | 赫尔克里斯有限公司 | The reservation of acetaldehyde in the smoke from cigarette and nicotine byproduct and the transmission of selection |
| CN102499479A (en) * | 2011-11-03 | 2012-06-20 | 湖南中烟工业有限责任公司 | Complex adsorbent capable of reducing release amount of heavy metals in mainstream smoke of cigarettes, preparation method for complex adsorbent and application of complex adsorbent |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105919159A (en) * | 2016-05-27 | 2016-09-07 | 阜阳卷烟材料厂 | Cigarette filter stick capable of removing heavy metals in cigarette smoke |
| CN106954891A (en) * | 2017-04-10 | 2017-07-18 | 滁州卷烟材料厂 | A kind of filter tip for being used to adsorb heavy metal in cigarette smoke |
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| CN102948925B (en) | 2014-06-11 |
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