CN105984871A - Method for preparing modified activated carbon from coffee residues - Google Patents
Method for preparing modified activated carbon from coffee residues Download PDFInfo
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- CN105984871A CN105984871A CN201510976643.4A CN201510976643A CN105984871A CN 105984871 A CN105984871 A CN 105984871A CN 201510976643 A CN201510976643 A CN 201510976643A CN 105984871 A CN105984871 A CN 105984871A
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- activated carbon
- coffee residues
- carbonized material
- modified activated
- coffee
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Abstract
The invention provides a method for preparing modified activated carbon from coffee residues. The method includes soaking raw materials, namely, the coffee residues, in sodium hydroxide solution at first; carbonizing the coffee residues at the high temperatures to increase the specific surface areas of the coffee residues, spraying potassium chloride solution on the coffee residues, activating the coffee residues at the high temperatures again and keeping the temperatures of the coffee residues constant; activating the coffee residues by the aid of water vapor, spraying iron sulfate solution on the coffee residues and carrying out activating treatment on the coffee residues; adding silane coupling agents into the coffee residues and grinding and smashing the silane coupling agents and the coffee residues; adding potassium ferrate, diatomaceous earth and MnO2 into the coffee residues, sufficiently grinding the potassium ferrate, the diatomaceous earth, the MnO2 and the coffee residues and sufficiently mixing the potassium ferrate, the diatomaceous earth, the MnO2 and the coffee residues with one another to obtain mixtures; calcining and cooling the mixtures to obtain the modified activated carbon which is a final product. The method has the advantages that the modified activated carbon has abundant micropores, the micropores are slightly larger than harmful gas, the specific surface area of the modified activated carbon is larger than 3000 square meters/gram, the modified activated carbon is high in efficiency and adsorption capacity for toxic and harmful gas such as benzene, formaldehyde and ammonia gas, gaseous pollutants and harmful repugnant substances in indoor air can be effectively removed, purposes of reducing pollution and purifying the air can be achieved, and increase of the formaldehyde in the indoor air can be effectively inhibited.
Description
Technical field
The present invention relates to activated carbon preparation field, be specifically related to a kind of method that coffee grounds produces modified activated carbon.
Background technology
Along with the development in air-tightness modern times building for the purpose of insulation, noise reduction, the saving energy, construction material,
Chemical substance that household goods distributes and the cigarette smoke that smoking produces are that modern suffers from asthma, chemicals
Matter allergy, the major reason of immune disease.According to the research of U.S. Environmental Protection Agency (EPA), the sky that people breathe in indoor
Gas pollution level is 2-5 times of outdoor air, sometimes even up to 100 times, and modern almost 90% work
Move and all carry out in indoor.Thus long-time breathe contaminated room air start to cause people to have a headache, dizziness,
Faint, stimulate the eye ear mouth and nose of people, even cause respiratory tract diseases such as being difficult to allergy and the asthma cured, indoor
Air pollution has become as the problem that the mankind can not be ignored.For solving air pollution problem inside rooms, U.S. Environmental Protection Agency (EPA)
(EPA) air purifier is recommended.
The operation principle of air purifier is that the physisorption by activated carbon adsorbs the formaldehyde in air in fact
Etc. harmful gas, the efficiency comparison of existing activated carbon is low, is substantially unable to reach the effect that full room purifies, typically
Can only a corner of clean rooms, and activated carbon once reaches to adsorb saturation, if not processing, its
Can become again a malicious source, volatilize in air dusty gas endlessly, causes secondary pollution, activity
The development of charcoal is developed targetedly to be had the activated carbon of special absorption property and becomes one of important research direction.
Utilize special garbage prepare activated carbon to find special absorption function, to find cheap bonding agent etc. be also weight
The research direction wanted.
Summary of the invention
The invention provides a kind of method that coffee grounds produces modified activated carbon, the activated carbon that the inventive method prepares
Porosity is high, and specific surface area is big, has high-effect absorbability to toxic and harmful.
The present invention adopts the following technical scheme that
A kind of coffee grounds produces the method for modified activated carbon, it is characterised in that comprise the following steps:
(1), the coffee grounds that will dry, first soak at 70-80 DEG C with the sodium hydroxide solution that concentration is 0.5%
1-2 hour, it is subsequently placed in small-sized retort isolation air and heats, control heating rate and be 4-5 DEG C
Constant temperature 2h when/min is warming up to 200 DEG C is then according to same programming rate is continuously heating to 440 DEG C of constant temperature again
1-2h, is finally cooled to room temperature in the case of isolation air, then obtain carbonized material；
(2), the carbonized material of step (1) gained is put into blender, under stirring, spray potassium chloride to it
Solution, the fountain height of Klorvess Liquid is: every kilogram of carbonized material sprays into 100ml Klorvess Liquid, described chlorine
Change potassium solution be concentration be 0.5% Klorvess Liquid, spray after terminating stirring 10-15 minute, allow carbonized material
Abundant adsorbing chlorinated potassium solution；
(3) carbonized material being adsorbed with potassium chloride, step (2) obtained loads and completely cuts off air in Miniature activating oven
Heating, activates, when temperature rises to 500 DEG C again being passed through appropriate steam when temperature is raised to 500 DEG C
After Shi Hengwen 1-1.5h, then spray into ferrum sulfuricum oxydatum solutum, be continuously heating to 600 DEG C, constant temperature 1-1.5h, activation
At the end of activated carbon completely cut off air cooling-down be cooled to room temperature；
(4) carbonized material, by step (3) obtained puts in grinder, is simultaneously introduced carbonized material weight 3-4%
Silane coupler, is fully ground 15 minutes, adds the potassium ferrate of carbonized material weight 0.5-1%, the silicon of 1-2%
Diatomaceous earth, the MnO2 of 1%, after being fully ground, then 400-425 DEG C of roasting 1-2 hour, finally at isolation air
In the case of be cooled to room temperature, i.e. obtain modified activated carbon.
Described coffee grounds produces the method for modified activated carbon, it is characterised in that: the iron sulfate described in step (3)
The mass percent concentration of solution is 1.0%, and fountain height is: every kilogram of carbonized material sprays into 60-70ml ferric sulfate solution
Liquid.
Beneficial effect
The present invention passes through carbonization and deep activation, the modified modification prepared with domestic refuse coffee grounds for raw material
Activated carbon.The inventive method is first with sodium hydroxide solution coffee soaking slag raw material, then at high temperature carbonization, improves
Specific surface area, with spraying Klorvess Liquid, high temperature activates again, constant temperature, then with after steam activation,
Spray into ferrum sulfuricum oxydatum solutum activation processing again, be subsequently adding silane coupler and grind, add potassium ferrate,
Kieselguhr, MnO2 are fully ground mixing, in roasting, cooling, obtain final products.This method passes through alkali liquor
The duct energy of immersion, loading metal-salt potassium chloride, modified with ferric sulfate, the SOx discharged by decomposition and activated carbon
Certain chemical reaction enough occurring, thus increases the aperture of absorbent charcoal material, meanwhile, slaine is at high temperature bar
Being reduced by activated carbon under part, expand activated carbon pore size, the modified activated carbon that this method obtains has specific surface area
Greatly, specific surface area is up to 3500m2/ g, uses potassium ferrate, kieselguhr, MnO2 is mixed and modified improves work
The ability of property charcoal adsorption analysis formaldehyde.
The activated carbon that the inventive method obtains in a word has abundant micropore, and the size in hole is slightly larger than there being poison
Body, specific surface area > 3000 meters squared per gram, for benzene, formaldehyde, the toxic and harmful such as ammonia has efficiently
Energy absorbability, can effectively remove the gaseous contaminant in room air and harmful rotten material, and then reach fall
Low stain, the purpose of purification air, can suppress the increase of formaldehyde in indoor air effectively.The coffee grounds system of employing
Standby activated carbon is a kind of Land use systems of abandoned biomass resource, and can realize utilizing abandoned biomass resource to control
The problem of reason environmental pollution, reaches the effect turned waste into wealth.
Detailed description of the invention
A kind of coffee grounds produces the method for modified activated carbon, comprises the following steps:
(1), the coffee grounds that will dry, first soak at 70-80 DEG C with the sodium hydroxide solution that concentration is 0.5%
1-2 hour, it is subsequently placed in small-sized retort isolation air and heats, control heating rate and be 4-5 DEG C
Constant temperature 2h when/min is warming up to 200 DEG C is then according to same programming rate is continuously heating to 440 DEG C of constant temperature again
1-2h, is finally cooled to room temperature in the case of isolation air, then obtain carbonized material；
(2), the carbonized material of step (1) gained is put into blender, under stirring, spray potassium chloride to it
Solution, the fountain height of Klorvess Liquid is: every kilogram of carbonized material sprays into 100ml Klorvess Liquid, described chlorine
Change potassium solution be concentration be 0.5% Klorvess Liquid, spray terminate after stirring 15 minutes, allow carbonized material fill
Divide adsorbing chlorinated potassium solution；
(3) carbonized material being adsorbed with potassium chloride, step (2) obtained loads and completely cuts off air in Miniature activating oven
Heating, activates, when temperature rises to 500 DEG C again being passed through appropriate steam when temperature is raised to 500 DEG C
After Shi Hengwen 1-1.5h, then spray into ferrum sulfuricum oxydatum solutum, be continuously heating to 600 DEG C, constant temperature 1.5h, activation knot
During bundle, activated carbon is completely cut off air cooling-down and be cooled to room temperature；
(4) carbonized material, by step (3) obtained puts in grinder, is simultaneously introduced carbonized material weight 3-4%
Silane coupler, is fully ground 15 minutes, adds the potassium ferrate of carbonized material weight 0.5-1%, the silicon of 1-2%
Diatomaceous earth, the MnO2 of 1%, after being fully ground, then 400-425 DEG C of roasting 1-2 hour, finally at isolation air
In the case of be cooled to room temperature, i.e. obtain modified activated carbon.
Wherein, the mass percent concentration of the ferrum sulfuricum oxydatum solutum in step (3) is 1.0%, and fountain height is: every thousand
Gram carbonized material sprays into 65ml ferrum sulfuricum oxydatum solutum.
Performance detection to the activated carbon that the inventive method prepares, result see table:
Claims (2)
1. the method that a coffee grounds produces modified activated carbon, it is characterised in that comprise the following steps:
(1), the coffee grounds that will dry, first soak 1-2 hour at 70-80 DEG C with the sodium hydroxide solution that concentration is 0.5%, it is subsequently placed in small-sized retort isolation air to heat, control heating rate be 4-5 DEG C/min when being warming up to 200 DEG C constant temperature 2h then according to same programming rate is continuously heating to 440 DEG C of constant temperature 1-2h again, finally in the case of isolation air, it is cooled to room temperature, then obtains carbonized material；
(2), the carbonized material of step (1) gained is put into blender, Klorvess Liquid is sprayed to it under stirring, the fountain height of Klorvess Liquid is: every kilogram of carbonized material sprays into 100ml Klorvess Liquid, described Klorvess Liquid be concentration be 0.5% Klorvess Liquid, sprinkling terminate after stirring 10-15 minute, allow the abundant adsorbing chlorinated potassium solution of carbonized material；
(3) carbonized material being adsorbed with potassium chloride, step (2) obtained loads and completely cuts off air heating in Miniature activating oven, activate being passed through appropriate steam when temperature is raised to 500 DEG C, when temperature rises to 500 DEG C again after constant temperature 1-1.5h, spray into ferrum sulfuricum oxydatum solutum again, it is continuously heating to 600 DEG C, constant temperature 1-1.5h, completely cuts off air cooling-down by activated carbon at the end of activation and is cooled to room temperature；
(4) carbonized material, step (3) obtained puts in grinder, it is simultaneously introduced the silane coupler of carbonized material weight 3-4%, it is fully ground 15 minutes, add the potassium ferrate of carbonized material weight 0.5-1%, the kieselguhr of 1-2%, the MnO2 of 1%, after being fully ground, again 400-425 DEG C of roasting 1-2 hour, finally in the case of isolation air, it is cooled to room temperature, i.e. obtains modified activated carbon.
Coffee grounds the most according to claim 1 produces the method for modified activated carbon, it is characterised in that: the mass percent concentration of the ferrum sulfuricum oxydatum solutum described in step (3) is 1.0%, and fountain height is: every kilogram of carbonized material sprays into 60-70ml ferrum sulfuricum oxydatum solutum.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510976643.4A CN105984871A (en) | 2015-12-22 | 2015-12-22 | Method for preparing modified activated carbon from coffee residues |
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| CN201510976643.4A CN105984871A (en) | 2015-12-22 | 2015-12-22 | Method for preparing modified activated carbon from coffee residues |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904615A (en) * | 2017-05-02 | 2017-06-30 | 北京中欧普瑞科技有限公司 | Method for preparation of active carbon and the equipment for preparing activated carbon |
| CN107892300A (en) * | 2017-11-15 | 2018-04-10 | 广东环境保护工程职业学院 | A kind of coffee grounds valuable component separation and recovery method and application |
| CN108863628A (en) * | 2018-09-30 | 2018-11-23 | 芜湖县花桥镇恒乐水果种植专业合作社 | One kind can improve soil and increase matter grape slow-release fertilizer preparation method |
| CN110124614A (en) * | 2019-05-21 | 2019-08-16 | 中国咖啡工程研究中心 | A kind of coffee slag adsorbent handling industrial textile waste water |
| CN110143592A (en) * | 2019-07-05 | 2019-08-20 | 咖法科技(上海)有限公司 | A kind of preparation method of coffee grounds active carbon |
| CN110178738A (en) * | 2019-07-05 | 2019-08-30 | 咖法科技(上海)有限公司 | A kind of preparation method of coffee grounds cat litter |
| CN110639472A (en) * | 2019-10-17 | 2020-01-03 | 哈尔滨商业大学 | Preparation method of densified composite adsorbent based on activated carbon/nano-mineral crystal/graphene |
| CN110732316A (en) * | 2019-11-11 | 2020-01-31 | 北京航天爱锐科技有限责任公司 | Activated carbon adsorption material, preparation method thereof and application thereof in field of catalytic decomposition of organic pollutants |
| CN111533201A (en) * | 2020-04-23 | 2020-08-14 | 华南理工大学 | Biomass water treatment agent based on porous coffee grounds and preparation method thereof |
| CN112005811A (en) * | 2020-09-22 | 2020-12-01 | 蒋亚涛 | Edible fungus cultivation material and preparation method thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904615A (en) * | 2017-05-02 | 2017-06-30 | 北京中欧普瑞科技有限公司 | Method for preparation of active carbon and the equipment for preparing activated carbon |
| CN107892300A (en) * | 2017-11-15 | 2018-04-10 | 广东环境保护工程职业学院 | A kind of coffee grounds valuable component separation and recovery method and application |
| CN108863628A (en) * | 2018-09-30 | 2018-11-23 | 芜湖县花桥镇恒乐水果种植专业合作社 | One kind can improve soil and increase matter grape slow-release fertilizer preparation method |
| CN110124614A (en) * | 2019-05-21 | 2019-08-16 | 中国咖啡工程研究中心 | A kind of coffee slag adsorbent handling industrial textile waste water |
| CN110143592A (en) * | 2019-07-05 | 2019-08-20 | 咖法科技(上海)有限公司 | A kind of preparation method of coffee grounds active carbon |
| CN110178738A (en) * | 2019-07-05 | 2019-08-30 | 咖法科技(上海)有限公司 | A kind of preparation method of coffee grounds cat litter |
| CN110639472A (en) * | 2019-10-17 | 2020-01-03 | 哈尔滨商业大学 | Preparation method of densified composite adsorbent based on activated carbon/nano-mineral crystal/graphene |
| CN110639472B (en) * | 2019-10-17 | 2022-03-01 | 哈尔滨商业大学 | Preparation method of densified composite adsorbent based on activated carbon/nano-mineral crystal/graphene |
| CN110732316A (en) * | 2019-11-11 | 2020-01-31 | 北京航天爱锐科技有限责任公司 | Activated carbon adsorption material, preparation method thereof and application thereof in field of catalytic decomposition of organic pollutants |
| CN110732316B (en) * | 2019-11-11 | 2022-08-23 | 北京航天爱锐科技有限责任公司 | Activated carbon adsorption material, preparation method thereof and application thereof in field of catalytic decomposition of organic pollutants |
| CN111533201A (en) * | 2020-04-23 | 2020-08-14 | 华南理工大学 | Biomass water treatment agent based on porous coffee grounds and preparation method thereof |
| CN111533201B (en) * | 2020-04-23 | 2021-09-21 | 华南理工大学 | Biomass water treatment agent based on porous coffee grounds and preparation method thereof |
| CN112005811A (en) * | 2020-09-22 | 2020-12-01 | 蒋亚涛 | Edible fungus cultivation material and preparation method thereof |
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Application publication date: 20161005 |