CN102948925B - Application method of cigarette smoke heavy metal adsorbent - Google Patents
Application method of cigarette smoke heavy metal adsorbent Download PDFInfo
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- CN102948925B CN102948925B CN201210491301.XA CN201210491301A CN102948925B CN 102948925 B CN102948925 B CN 102948925B CN 201210491301 A CN201210491301 A CN 201210491301A CN 102948925 B CN102948925 B CN 102948925B
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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 healthy protect consciousness of consumer to self and environmental consciousness are also in continuous enhancing, also more and more higher to the requirement of safety cigarette.Therefore the cigarette product of, developing low harm is a kind of trend.
Heavy metal in cigarette smoke is mainly derived from tobacco itself, and heavy metal element in tobacco is mainly derived from the soil, the water and air etc. that in tobacco planting environment, contain heavy metal pollution.The heavy metal elements such as lead in tobacco, arsenic, cadmium, chromium, mercury can enter human body by flue gas with the form of aerosol or metal oxide, forming after accumulation, may damage to human body.Research finds that in the flue gas of a cigarette, the most absorbable heavy metal is cadmium.For the control of content of beary metal in 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.The content of Chan Yan district heavy metal in soil and exist form directly to affect the absorptivity of tobacco leaf to heavy metal, in general soil, the content of soluble heavy metal is higher, 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 on the other hand in production of cigarettes process, adopt some technology reduce main flume in content of beary metal, 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 its harm to human body.Develop now the good NEW TYPE OF COMPOSITE filter tip of active carbon filter and some other effect, poisonous and hazardous trace element (cadmium, nickel, arsenic) and organic compound etc. are had to 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.Composite filter tip prepared by acetate fiber and yellow Siberian cocklebur, can effectively reduce cadmium and plumbous paramorphogen in cigarette main flume, sucks the accumulation exposure dose of heavy metal lead, cadmium and deposits and have positive effect in lung for reducing smoker.In addition, the active carbon composite filter tip of chitosan-containing has stronger selection absorbability to the heavy metal in flue gas and other harmful substances.The result of study of Zhou Guojun etc. shows, a kind of in copper chlorophyll and chlorophyllin sodium or two kinds are joined to triacetin three esters, sprays in tow, or is prepared into 40-80 order particle and adds in mouth rod, can effectively catching heavy metal.The research of Wang Ying etc. shows, CNT has more intense selective absorption effect to the heavy metal 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 and reaches fast adsorption equilibrium.Meanwhile, make on adsorbent band amino, carboxyl etc. functional groups come that huge legendary turtle is closed or complexation heavy metal ion is also an important channel of improving absorption property by finishing.
Polymine is a kind of high molecular weight water soluble polymer, has a large amount of amido N atoms on its strand, and 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 actual adsorption applications, due to the water miscible feature of polymine, need to be by selecting suitable carrier that water-soluble polyethylene imines is fixed, ensure the operability of its absorption heavy metal ions in wastewater.The performance of carrier is directly connected to the effect of adsorbent, 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 object of this invention is to provide the application process of the cigarette flue gas heavy metal adsorbent of the polyethylene imine beautify that a kind of adsorption effect is good, it is effective that this cigarette flue gas heavy metal adsorbent not only adsorbs heavy metal in cigarette smoke, and manufacture craft is simple, low production cost and be suitable for large-scale production.
An application process for heavy metal absorbent in cigarette smoke is to join in the filter tip of cigarette, for adsorbing the heavy metal of flue gas; The addition of described heavy metal absorbent is that 30mg/ props up;
Described heavy metal absorbent preparation method, specifically comprises the following steps:
(1) silica gel is placed in to 120 DEG C of baking 5 ~ 8h and activates, make Silica Surface generate 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, dry 2-6 hour at 80-120 DEG C, then be placed under infrared lamp and toast 3-7 hour, be finally dried to faint yellow solid at 120 DEG C;
Described polymine and the mass ratio of silica gel are 2.5 ~ 15:100; Be preferably 10:100.
Described silica gel particle size is 40 ~ 60 orders;
The molecular weight of described polymine is the polymine that 70000 polymine or molecular weight are 10000.
Be preferably 70000 high molecular weight polyethyleneimine.
The cigarette after 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, detects the conventional ingredient such as nicotine, tar in contrast cigarette sample and test cigarette sample main flume simultaneously.
Compared with prior art, its maximum feature is in the present invention:
1, use first on the silica gel of polymine uniform load after activation, make the functional groups such as a large amount of amino and carboxyl on adsorbent band by finishing, greatly improve the selective of the adsorption capacity of adsorbent and absorption by chelating or complexing, and this adsorbent is added in cigarette filter first, obtain 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, without 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 is activated and do not activated by acid treatment by direct heating means, greatly keep the mechanical strength of silica gel, avoided situation about being blended while stirring in synthetic, overcome the shortcoming that after adsorbent activates in manufacturing process, original physical behavior of silica gel is destroyed, thereby made silica gel stir the powdered drawback of granulation again because stir after having avoided absorbent preparation to complete.Simplify experimental implementation and retained original physical absorption attribute of silica gel.
4, this adsorbent can be realized quick heavy metal adsorption.The general reaction time of heavy metal adsorption in water can be longer, and heavy metal adsorption reaction time in cigarette smoke is very short, and when cigarette smoking, be only Millisecond the time of contact of flue gas and adsorbent, requires adsorbent can realize heavy metal adsorption fast.And the existence of the Silica Surface porous that the present invention selects has increased the specific area of adsorbent, reduce 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 gas phase than general carrier, in a word, the combination of silica gel and polymine strengthens adsorbent heavy metal in gas phase ability of arresting greatly, can find out from the data of the embodiment of the present invention, has obtained beyond thought effect.
Detailed description of the invention
Following examples are intended to more specifically describe the present invention instead of limitation of the invention further, and the present invention can implement by the either type described in summary of the invention.
Embodiment mono-
First the silica gel that is dried to constant weight is crossed to 40 ~ 60 mesh sieves, be then placed in 120 DEG C of baking oven high-temperature heating 5 ~ 8h and activate the silica gel obtaining after activation.
Embodiment bis-
Get 0.50g molecular weight and be 10000 low molecular weight polyethylene imines and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs.In baking oven 120 DEG C dry 6 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids.Obtain the low molecular weight polyethylene imine beautify adsorbent that in adsorbent, the mass ratio of polymine and silica gel is 5:100.
Add the standard of 30mg adsorbent adsorbent to be joined in the filter tip of cigarette according to every cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out heavy metal detection, carry out the check experiment of blank cigarette sample simultaneously.Test cigarette is as shown in the table with the reduced rate that contrasts the main flume conventional ingredient of cigarette and heavy metal cadmium, lead.
Embodiment tri-
Get 1.00g molecular weight and be 10000 low molecular weight polyethylene imines and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs.In baking oven 120 DEG C dry 4 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids.Obtain the low molecular weight polyethylene imine beautify adsorbent that in adsorbent, the mass ratio of polymine and silica gel is 10:100.
Add the standard of 30mg adsorbent adsorbent to be joined in the filter tip of cigarette according to every cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out heavy metal detection, carry out the check experiment of blank cigarette sample simultaneously.Test cigarette is as shown in the table with the reduced rate that contrasts the main flume conventional ingredient of cigarette and heavy metal cadmium, lead.
Embodiment tetra-
Get 1.50g molecular weight and be 10000 low molecular weight polyethylene imines and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs.In baking oven 120 DEG C dry 4 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids.Obtain the low molecular weight polyethylene imine beautify adsorbent that in adsorbent, the mass ratio of polymine and silica gel is 15:100.
Add the standard of 30mg adsorbent adsorbent to be joined in the filter tip of cigarette according to every cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out heavy metal detection, carry out the check experiment of blank cigarette sample simultaneously.Test cigarette is as shown in the table with the reduced rate that contrasts the main flume conventional ingredient of cigarette and heavy metal cadmium, lead.
Embodiment five
Get 0.50g molecular weight and be 70000 high molecular weight polyethyleneimine 50% aqueous solution and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs.In baking oven 120 DEG C dry 5 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids.Obtain the high molecular weight polyethyleneimine that in adsorbent, the mass ratio of polymine and silica gel is 2.5:100 and modify adsorbent.
Add the standard of 30mg adsorbent adsorbent to be joined in the filter tip of cigarette according to every cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out heavy metal detection, carry out the check experiment of blank cigarette sample simultaneously.Test cigarette is as shown in the table with the reduced rate that contrasts the main flume conventional ingredient of cigarette and heavy metal cadmium, lead.
Embodiment six
Get 1.00g molecular weight and be 70000 high molecular weight polyethyleneimine 50% aqueous solution and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs.In baking oven 120 DEG C dry 6 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids.Obtain the high molecular weight polyethyleneimine that in adsorbent, the mass ratio of polymine and silica gel is 5:100 and modify adsorbent.
Add the standard of 30mg adsorbent adsorbent to be joined in the filter tip of cigarette according to every cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out heavy metal detection, carry out the check experiment of blank cigarette sample simultaneously.Test cigarette is as shown in the table with the reduced rate that contrasts the main flume conventional ingredient of cigarette and heavy metal cadmium, lead.
Embodiment seven
Get 1.60g molecular weight and be 70000 high molecular weight polyethyleneimine 50% aqueous solution and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs evenly.In baking oven 120 DEG C dry 6 hours dry most of moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids.Obtain the high molecular weight polyethyleneimine that in adsorbent, the mass ratio of polymine and silica gel is 8:100 and modify adsorbent.
Add the standard of 30mg adsorbent adsorbent to be joined in the filter tip of cigarette according to every cigarette, make a collection of cigarette, humiture balance 24h, adopt disk type smoking machine smoking cigarette under Electrostatic pattern, collect granule phase substance and gas gas-phase objects and carry out heavy metal detection, carry out the check experiment of blank cigarette sample simultaneously.Test cigarette is as shown in the table with the reduced rate that contrasts the main flume conventional ingredient of cigarette and heavy metal cadmium, lead.
Claims (6)
1. an application process for heavy metal absorbent in cigarette smoke, is characterized in that, heavy metal absorbent is joined in the filter tip of cigarette, for adsorbing the heavy metal of flue gas; The addition of described heavy metal absorbent is that 30mg/ props up;
Described heavy metal absorbent preparation method, specifically comprises the following steps:
First the silica gel that is dried to constant weight is crossed to 40～60 mesh sieves, be then placed in 120 DEG C of baking oven high-temperature heating 5～8h and activate the silica gel obtaining after activation; Get 0.50g molecular weight and be 10000 low molecular weight polyethylene imines and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs; In baking oven 120 DEG C dry 6 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids; Obtaining the mass ratio of polymine and silica gel in adsorbent is 5:100.
2. an application process for heavy metal absorbent in cigarette smoke, is characterized in that, heavy metal absorbent is joined in the filter tip of cigarette, for adsorbing the heavy metal of flue gas; The addition of described heavy metal absorbent is that 30mg/ props up;
Described heavy metal absorbent preparation method, specifically comprises the following steps:
First the silica gel that is dried to constant weight is crossed to 40～60 mesh sieves, be then placed in 120 DEG C of baking oven high-temperature heating 5～8h and activate the silica gel obtaining after activation; Get 1.00g molecular weight and be 10000 low molecular weight polyethylene imines and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs; In baking oven 120 DEG C dry 4 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids; Obtaining the mass ratio of polymine and silica gel in adsorbent is 10:100.
3. an application process for heavy metal absorbent in cigarette smoke, is characterized in that, heavy metal absorbent is joined in the filter tip of cigarette, for adsorbing the heavy metal of flue gas; The addition of described heavy metal absorbent is that 30mg/ props up;
Described heavy metal absorbent preparation method, specifically comprises the following steps:
First the silica gel that is dried to constant weight is crossed to 40～60 mesh sieves, be then placed in 120 DEG C of baking oven high-temperature heating 5～8h and activate the silica gel obtaining after activation; Get 1.50g molecular weight and be 10000 low molecular weight polyethylene imines and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs; In baking oven 120 DEG C dry 4 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids; Obtaining the mass ratio of polymine and silica gel in adsorbent is 15:100.
4. an application process for heavy metal absorbent in cigarette smoke, is characterized in that, heavy metal absorbent is joined in the filter tip of cigarette, for adsorbing the heavy metal of flue gas; The addition of described heavy metal absorbent is that 30mg/ props up;
Described heavy metal absorbent preparation method, specifically comprises the following steps:
First the silica gel that is dried to constant weight is crossed to 40～60 mesh sieves, be then placed in 120 DEG C of baking oven high-temperature heating 5～8h and activate the silica gel obtaining after activation; Get 0.50g molecular weight and be 70000 high molecular weight polyethyleneimine 50% aqueous solution and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs; In baking oven 120 DEG C dry 5 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids; Obtaining the mass ratio of polymine and silica gel in adsorbent is 2.5:100.
5. an application process for heavy metal absorbent in cigarette smoke, is characterized in that, heavy metal absorbent is joined in the filter tip of cigarette, for adsorbing the heavy metal of flue gas; The addition of described heavy metal absorbent is that 30mg/ props up;
Described heavy metal absorbent preparation method, specifically comprises the following steps:
First the silica gel that is dried to constant weight is crossed to 40～60 mesh sieves, be then placed in 120 DEG C of baking oven high-temperature heating 5～8h and activate the silica gel obtaining after activation; Get 1.00g molecular weight and be 70000 high molecular weight polyethyleneimine 50% aqueous solution and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs; In baking oven 120 DEG C dry 6 hours dry moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids; Obtaining the mass ratio of polymine and silica gel in adsorbent is 5:100.
6. an application process for heavy metal absorbent in cigarette smoke, is characterized in that, heavy metal absorbent is joined in the filter tip of cigarette, for adsorbing the heavy metal of flue gas; The addition of described heavy metal absorbent is that 30mg/ props up;
Described heavy metal absorbent preparation method, specifically comprises the following steps:
First the silica gel that is dried to constant weight is crossed to 40～60 mesh sieves, be then placed in 120 DEG C of baking oven high-temperature heating 5～8h and activate the silica gel obtaining after activation; Get 1.60g molecular weight and be 70000 high molecular weight polyethyleneimine 50% aqueous solution and be dissolved in 25ml deionized water, after fully dissolving, the silica gel taking after 10.0g activation is placed in this aqueous solution, stirs evenly; In baking oven 120 DEG C dry 6 hours dry most of moisture, be then placed under infrared lamp and toast 6 hours, finally in baking oven 120 DEG C be dried to faint yellow granular solids; Obtaining the mass ratio of polymine and silica gel in adsorbent is 8:100.
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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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| CN102948925B true CN102948925B (en) | 2014-06-11 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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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 |
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