CN102773074A - Preparation and application of efficient deodorant carbon-based adsorbent - Google Patents
Preparation and application of efficient deodorant carbon-based adsorbent Download PDFInfo
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- CN102773074A CN102773074A CN2012101843443A CN201210184344A CN102773074A CN 102773074 A CN102773074 A CN 102773074A CN 2012101843443 A CN2012101843443 A CN 2012101843443A CN 201210184344 A CN201210184344 A CN 201210184344A CN 102773074 A CN102773074 A CN 102773074A
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Abstract
The invention discloses an efficient refuse landfill odor adsorbent and preparation and application thereof. According to the odor adsorbent, iron ions are loaded on the surface of active carbon. According to the preparation method, cocoanut active carbon is taken as a carrier, and ferric nitrate is taken as a precursor; and the preparation method comprises the steps of loading Fe(NO3)3 on the surface of the active carbon by an immersion method, and drying an obtained sample for removing water at a temperature of 100-120 DEG C to obtain the modified active carbon adsorbent. The modified active carbon adsorbent has a good effect when being used for removing malodorous components such as thiol and thioether in odor, is simple to prepare and easy in control of process and has a high industrial application value.
Description
Technical field
The present invention relates to a kind of novel active carbon deodorization absorbent, be specifically related to a kind of containing to remove mercaptan, thioether preparation of adsorbent method in mercaptan, the thioether foul smell as refuse landfill foul smell or other.
Background technology
Along with the continuous development of urbanization process, municipal refuse be treated as a problem demanding prompt solution.Current, most countries generally adopts the method for sanitary landfills to handle.Unit such as the sorting in this process, fragmentation, conveying, dehydration all can produce a large amount of foul smell, and malodor components mainly contains mercaptan, thioether, chloride etc., can cause the pollution of atmospheric environment.Therefore, develop effective deodorization technology, can reduce the generation of secondary pollution, improve the working environment of refuse treatment engineering.
At present China about the deodorization technology of refuse landfill also in the starting stage, and mainly aspect the living beings deodorizing.Biological deodorizing specification requirement condition is harsh, and input cost is big, is unfavorable for that garbage loading embeading factory uses.And physical absorption has plurality of advantages such as energy consumption is low, technology is simple, automaticity is high, small investment, operating flexibility is big, environmental benefit is good and by broad research and application.Adsorbent is the research emphasis of physisorphtion as this technological core place always.Sorbing material commonly used is because many disadvantages all can not reach satisfied deodorizing effect.
Therefore, be even more important except that the adsorbent with high efficiency of additive capability just seems through modification exploitation to conventional sorbing material.
Summary of the invention
First technical problem that the present invention will solve is a kind of novel, charcoal base deodorization absorbent efficiently of exploitation.
Acticarbon of the present invention is at the area load Fe of cocoanut active charcoal (NO
3)
3Described acticarbon prepares according to following method: with the cocoanut active charcoal is carrier, is precursor with the ferric nitrate, and deionized water is that solvent is made into maceration extract; The mass ratio of said cocoanut active charcoal and inorganic metal salt is 1:0.005 ~ 0.1, adopts infusion process with said Fe (NO
3)
3Be carried on described active carbon glue surface, will be impregnated with Fe (NO again
3)
3 Silica gel 100 ~ 120 ℃ of down oven dry, be described modified activated carbon absorbent.
Second technical problem that the present invention will solve provides a kind of method for preparing above-mentioned acticarbon.
The technical scheme that the present invention adopts is following.
A kind of preparation method of acticarbon comprises the steps.
A) by the ferric nitrate maceration extract of the saturated water adsorptive value of getting active carbon configuration certain volume, maceration extract is added drop-wise in the said cocoanut active charcoal uniformly, makes said active carbon fully flood.
B) mass ratio of the metallic iron of said active carbon and load is 1:0.005 ~ 0.1.
C) will be impregnated with Fe (NO
3)
3The cocoanut active charcoal air dry oven in be heated to 100 ~ 120 ℃, carry out drying and dewater.
In the face of doing, above-mentioned preparation method specifies down.
In the step a), described dipping method is commonly used has wet impregnation and incipient impregnation, the preferred equi-volume impregnating of the present invention.
In the step a), described dipping method, the suitable raising of dipping temperature, the growth of dip time help improving dipping efficient, carry out 4 ~ 12 hours under the preferred 20-60 of incipient impregnation of the present invention ℃.
In the step b), the Fe (NO that is impregnated with of the present invention
3)
3The drying of cocoanut active charcoal generally in air dry oven, carry out, described drying is recommended in carried out under 100 ~ 120 ℃ 12 ~ 24 hours.
The 3rd technical problem that the present invention will solve is with described Fe (NO
3)
3Modified activated carbon absorbent is used as thioether, mercaptan adsorbent, from the refuse landfill foul smell, removes malodor components thioether, mercaptan.
Metal modified active carbon adsorbent of the present invention can at room temperature use, and is applicable to the absorption to malodor components such as thioether, mercaptan, is far superior to unmodified cocoanut active charcoal, is the high-efficiency adsorbent of a kind of effective elimination thioether, mercaptan.
Compared with prior art, beneficial effect of the present invention is embodied in.
1) load of the present invention has Fe (NO
3)
3The cocoanut active charcoal adsorbent, with the cocoanut active charcoal of function admirable as carrier, at its area load inorganic metal salt.Because the factors such as electronic effect of metallic iron make that the active carbon after the load is further improved on many performances, outstanding shows: adsorption capacity is stronger, and is better to the absorption property of malodor components such as thioether, mercaptan.Shown good effect when in as the refuse landfill foul smell, removing malodor components thioether, mercaptan adsorbent with metal modified active carbon adsorbent of the present invention.
2) Fe (NO of the present invention
3)
3Modification cocoanut active charcoal preparation of adsorbent method is simple, realizes easily.Adopt equi-volume impregnating with Fe (NO
3)
3Directly load to activated carbon surface, removing redundant moisture and form with carrier active carbon surface and functional group through drying has the iron ion load layer of pretending usefulness, is described acticarbon.Compare with additive method, this preparation method is simpler, and preparation process does not have the waste liquid generation.
Description of drawings
Fig. 1 is a used carrier active carbon low temperature nitrogen adsorption/desorption curve map of the present invention.
Fig. 2 is a used carrier active carbon graph of pore diameter distribution of the present invention.
Fig. 3 is that application implementation example one described different activities carbon adsorbent is respectively to the breakthrough curve of ethyl mercaptan.
Fig. 4 is that application implementation example two described different activities carbon adsorbents are respectively to the breakthrough curve of ethyl sulfide.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Embodiment one.
Take by weighing 0.527 g, nine water ferric nitrates and place beaker, add 10.2 g deionized water and stirring and make its dissolving.Take by weighing 6 g cocoanut active charcoals and place the magnetic crucible, will join maceration extract dropwise add in the crucible, all be impregnated in the active carbon until all maceration extracts.At normal temperatures, the absorption dipping was put into air dry oven 110 ℃ of following dried overnight after 4 hours.Promptly obtain area load Fe (NO is arranged
3)
3Modification cocoanut active charcoal adsorbent.
Embodiment two.
Take by weighing 0.503 g, six water nickel nitrates and place beaker, add 10.2 g deionized water and stirring and make its dissolving.Take by weighing 6 g cocoanut active charcoals and place the magnetic crucible, will join maceration extract dropwise add in the crucible, all be impregnated in the active carbon until all maceration extracts.At normal temperatures, the absorption dipping was put into air dry oven 110 ℃ of following dried overnight after 4 hours.Promptly obtain area load Ni (NO is arranged
3)
2Modification cocoanut active charcoal adsorbent.
The present invention places application implementation example, comparative example one, comparative example two said charcoal base adsorbents of the present invention a kind of adsorbent bed of adsorbing separation evaluation system.Under normal pressure, feed the gaseous mixture of nitrogen ethyl mercaptan and nitrogen ethyl sulfide respectively, measure the adsorbance of adsorbent.
Adsorbing separation evaluation system of the present invention comprises adsorption separation device, gaseous mass spectrum, equipment such as gas-chromatography.Adsorbent bed is the stainless steel column structure, internal diameter 8mm, and wall thickness 2mm, length 480mm, adsorbent bed is connected by crossover sub with pipeline.
The application implementation example.
Get the said area load of 1 g Fe (NO is arranged
3)
3Acticarbon, at normal temperatures and pressures, the ethyl mercaptan mixed gas flow is 70 ml/min, the content of ethyl mercaptan is 5000 ppm.Find Fe (NO through the adsorption experiment test
3)
3The cocoanut active charcoal adsorbent of modification has fine adsorption effect to ethyl mercaptan, and the experiment breakthrough curve is seen the c curve among Fig. 3.
Get the said area load of 1 g Fe (NO is arranged
3)
3Acticarbon, at normal temperatures and pressures, the ethyl sulfide mixed gas flow is 200 ml/min, the content of ethyl sulfide is 5000 ppm.Find Fe (NO through the adsorption experiment test
3)
3The cocoanut active charcoal adsorbent of modification is also fine to the ethyl sulfide adsorption effect, and the experiment breakthrough curve is seen the c curve among Fig. 4.Therefore, load has Fe (NO
3)
3Acticarbon ethyl mercaptan and ethyl sulfide are all had good adsorption effect, be a kind of efficient deodorizing adsorbent that big application prospect is arranged.
Comparative example one.
Get the unmodified acticarbon of 1 g, at normal temperatures and pressures, the ethyl mercaptan mixed gas flow is 70 ml/min, and the content of ethyl mercaptan is 5000 ppm.Find that through the adsorption experiment test unmodified active carbon has certain adsorption capacity to ethyl mercaptan, the experiment breakthrough curve is seen a curve among Fig. 3.
Get the unmodified acticarbon of 1 g, at normal temperatures and pressures, the ethyl sulfide mixed gas flow is 200 ml/min, and the content of ethyl sulfide is 5000 ppm.Find that through the adsorption experiment test unmodified active carbon also has certain adsorption capacity to ethyl sulfide, the experiment breakthrough curve is seen a curve among Fig. 4.
Compare Fe (NO with unmodified active carbon
3)
3The cocoanut active charcoal adsorbent of modification obviously strengthens ethyl mercaptan, ethyl sulfide adsorption capacity.Therefore load has Fe (NO
3)
3Acticarbon ethyl mercaptan, ethyl sulfide are all had good adsorption effect, be a kind of efficient deodorizing adsorbent that big application prospect is arranged.
Comparative example two.
Get 1 g area load Ni (NO is arranged
3)
2Acticarbon, at normal temperatures and pressures, the ethyl mercaptan mixed gas flow is 70 ml/min, the content of ethyl mercaptan is 5000 ppm.Find Ni (NO through the adsorption experiment test
3)
2The cocoanut active charcoal adsorbent of modification reduces the ethyl mercaptan adsorption capacity, and the experiment breakthrough curve is seen the b curve among Fig. 3.
Get the said area load of 1 g Ni (NO is arranged
3)
2Acticarbon, at normal temperatures and pressures, the ethyl sulfide mixed gas flow is 200 ml/min, the content of ethyl sulfide is 5000 ppm.Find Ni (NO through the adsorption experiment test
3)
2The cocoanut active charcoal adsorbent of modification increases to the ethyl sulfide adsorption capacity, and the experiment breakthrough curve is seen the b curve among Fig. 4.
Therefore, load has Ni (NO
3)
2Acticarbon only ethyl sulfide is all had adsorption effect preferably, and very poor to the adsorption effect of ethyl mercaptan, concrete data are seen table 1, this obviously is not a kind of superior adsorbent.With (the NO of Fe described in the embodiment
3)
3Modified activated carbon absorbent is compared, and big gap is arranged on the foul smell adsorption capacity.So, Fe (NO of the present invention
3)
3-acticarbon is a kind of efficient decarburization adsorbent that big application prospect is arranged
The unit adsorbance of each sample of sorbent of table 1
Claims (9)
1. one kind is the acticarbon of main body with the cocoanut active charcoal, it is characterized in that said adsorbent is in the activated carbon surface load Fe (NO to be arranged
3)
3, said acticarbon prepares according to following method: with the cocoanut active charcoal is carrier, is precursor with the ferric nitrate, is that solvent is made into maceration extract with the deionized water, said active carbon and Fe (NO
3)
3Mass ratio be 1:0.005 ~ 0.1, adopt infusion process with Fe (NO
3)
3Be carried on described activated carbon surface, will be impregnated with Fe (NO again
3)
3Active carbon 100 ~ 120 ℃ of down oven dry, be described high efficiency active carbon deodorization absorbent.
2. require the preparation method of described acticarbon like right 1, said preparation method comprises the steps:
Fe (the NO of configuration certain volume
3)
3Maceration extract dropwise adds maceration extract in the cocoanut active charcoal, and active carbon is fully flooded;
To be impregnated with Fe (NO
3)
3Cocoanut active charcoal in air dry oven, be heated to 100 ~ 120 ℃, carry out drying and dewater.
3. the preparation method of acticarbon as claimed in claim 2 is characterized in that the described cocoanut active charcoal specific area of step a) is greater than 500 m
2/ g, average pore size 2 ~ 6 nm.
4. the preparation method of acticarbon as claimed in claim 2 is characterized in that the described infusion process of step a) is an equi-volume impregnating, and promptly the maceration extract volume is the saturated water adsorptive value of carrier cocoanut active charcoal.
5. the preparation method of acticarbon as claimed in claim 2 is characterized in that described infusion process active carbon of step a) and Fe (NO
3)
3Mass ratio be 1:0.005 ~ 0.1.
6. like the preparation method of the described acticarbon of claim 2 ~ 4, it is characterized in that the described dipping of step a) is under 20-60 ℃ of temperature, to carry out 4 ~ 12 hours.
7. the preparation method of acticarbon as claimed in claim 2 is characterized in that the dry used time of step b) is 12 ~ 24 hours.
8. like the preparation method of claim 1,2 and 4 described acticarbons, the unit mass saturated water adsorptive value that it is characterized in that the described cocoanut active charcoal of step a) is 1.7 ml/g.
9. acticarbon as claimed in claim 1 contains the application of mercaptan, thioether adsorbent in mercaptan, the thioether foul smell as refuse landfill foul smell or other.
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145534A (en) * | 2013-03-26 | 2013-06-12 | 南开大学 | Method for deeply removing sulfides in gasoline additive, namely methyl tert-butyl ether |
| CN103506074A (en) * | 2013-08-30 | 2014-01-15 | 蚌埠凤凰滤清器有限责任公司 | Transition metal modified active carbon capable of eliminating harmful materials and preparation method thereof |
| CN103521195A (en) * | 2013-08-30 | 2014-01-22 | 蚌埠首创滤清器有限公司 | Iron oxyhydroxide modified active carbon desulfurizer as well as preparation method thereof |
| CN103566894A (en) * | 2013-09-26 | 2014-02-12 | 蚌埠华纺滤材有限公司 | Arsenic removal modified active carbon and preparation method thereof |
| CN104261504A (en) * | 2014-09-16 | 2015-01-07 | 同济大学 | Method for removing sulfamethoxazole in water body by using modified bamboo charcoal |
| CN104437348A (en) * | 2014-11-12 | 2015-03-25 | 中国地质大学（武汉） | Uranium removing material for treating uranium-containing groundwater in situ and preparation method thereof |
| CN104815614A (en) * | 2015-04-15 | 2015-08-05 | 南通职业大学 | Preparation method of supported ferric activated carbons as well as condition and device applying supported ferric activated carbons to absorb methylbenzene |
| CN105170091A (en) * | 2015-10-22 | 2015-12-23 | 南京信息工程大学 | Preparation method of iron-modified reed biological carbon, and application of iron-modified reed biological carbon in treatment of phosphorus wastewater |
| CN105771900A (en) * | 2016-05-11 | 2016-07-20 | 南京工程学院 | Iron-loaded modified active carbon and preparation method thereof |
| CN107096501A (en) * | 2017-05-27 | 2017-08-29 | 长安大学 | It is a kind of to be used to adsorb load iron ion activity charcoal of xanthate and preparation method thereof and adsorption method |
| CN107938435A (en) * | 2017-11-21 | 2018-04-20 | 常州市鼎升环保科技有限公司 | A kind of preparation method of odor type reducing tar cigarette paper |
| CN109289770A (en) * | 2018-10-24 | 2019-02-01 | 山西新华化工有限责任公司 | The preparation method of the modified methyl mercaptan adsorbent material of yttrium |
| CN113230874A (en) * | 2021-04-30 | 2021-08-10 | 浙江维朴环境科技有限公司 | Odor treatment device and application thereof |
| CN113441109A (en) * | 2021-06-07 | 2021-09-28 | 南通大学 | Preparation method of compound modified spherical activated carbon for gas defense |
| CN115779969A (en) * | 2022-12-07 | 2023-03-14 | 山东京博石油化工有限公司 | Catalyst for mercaptan conversion in gasoline and preparation method thereof |
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| CN103145534A (en) * | 2013-03-26 | 2013-06-12 | 南开大学 | Method for deeply removing sulfides in gasoline additive, namely methyl tert-butyl ether |
| CN103506074A (en) * | 2013-08-30 | 2014-01-15 | 蚌埠凤凰滤清器有限责任公司 | Transition metal modified active carbon capable of eliminating harmful materials and preparation method thereof |
| CN103521195A (en) * | 2013-08-30 | 2014-01-22 | 蚌埠首创滤清器有限公司 | Iron oxyhydroxide modified active carbon desulfurizer as well as preparation method thereof |
| CN103566894A (en) * | 2013-09-26 | 2014-02-12 | 蚌埠华纺滤材有限公司 | Arsenic removal modified active carbon and preparation method thereof |
| CN104261504B (en) * | 2014-09-16 | 2016-04-20 | 同济大学 | A kind of method utilizing modification bamboo charcoal to remove sulfamethoxazole in water body |
| CN104261504A (en) * | 2014-09-16 | 2015-01-07 | 同济大学 | Method for removing sulfamethoxazole in water body by using modified bamboo charcoal |
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| CN105771900A (en) * | 2016-05-11 | 2016-07-20 | 南京工程学院 | Iron-loaded modified active carbon and preparation method thereof |
| CN107096501B (en) * | 2017-05-27 | 2020-04-24 | 长安大学 | Iron ion loaded activated carbon for adsorbing xanthate and preparation method and adsorption method thereof |
| CN107096501A (en) * | 2017-05-27 | 2017-08-29 | 长安大学 | It is a kind of to be used to adsorb load iron ion activity charcoal of xanthate and preparation method thereof and adsorption method |
| CN107938435A (en) * | 2017-11-21 | 2018-04-20 | 常州市鼎升环保科技有限公司 | A kind of preparation method of odor type reducing tar cigarette paper |
| CN109289770A (en) * | 2018-10-24 | 2019-02-01 | 山西新华化工有限责任公司 | The preparation method of the modified methyl mercaptan adsorbent material of yttrium |
| CN109289770B (en) * | 2018-10-24 | 2021-06-25 | 山西新华防化装备研究院有限公司 | Preparation method of yttrium modified methyl mercaptan adsorbing material |
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| CN113441109A (en) * | 2021-06-07 | 2021-09-28 | 南通大学 | Preparation method of compound modified spherical activated carbon for gas defense |
| CN113441109B (en) * | 2021-06-07 | 2023-11-07 | 南通大学 | Preparation method of composite modified spherical active carbon for gas defense |
| CN115779969A (en) * | 2022-12-07 | 2023-03-14 | 山东京博石油化工有限公司 | Catalyst for mercaptan conversion in gasoline and preparation method thereof |
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Application publication date: 20121114 |