CN109734090A - A kind of steel slag based biomass active carbon and preparation method thereof for degradation of formaldehyde - Google Patents
A kind of steel slag based biomass active carbon and preparation method thereof for degradation of formaldehyde Download PDFInfo
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- CN109734090A CN109734090A CN201910235201.2A CN201910235201A CN109734090A CN 109734090 A CN109734090 A CN 109734090A CN 201910235201 A CN201910235201 A CN 201910235201A CN 109734090 A CN109734090 A CN 109734090A
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Abstract
The steel slag based biomass active carbon and preparation method thereof that the invention discloses a kind of for degradation of formaldehyde, belongs to solid waste utilization of resources field.The steel slag based biomass active carbon includes biomass castoff, steel slag, steel slag composite grinding aids, phosphoric acid, dehydrated alcohol, hydrochloric acid and water.The biomass castoff is one of shell, fruit stone, stalk or a variety of；The steel slag is one of the bored slag of heat, electroslag and wind disintegrating slag or a variety of.The present invention carries out compound preparing steel slag based biomass active carbon using steel slag and biomass obsolete material, processing is modified to biomass obsolete material using the metal oxide contained in steel slag, the value added applications of steel slag Yu biomass obsolete material have been expanded, have realized the new approaches of " controlling danger with useless "；Simultaneously relative to the steel slag modified activated carbon technology that steel slag and active carbon are carried out to physical mixed at present, the present invention is combined using grinding aid technology with chemically composited technology, greatly improves the performance and stability of steel slag based biomass active carbon.
Description
Technical field
The invention belongs to solid waste utilization of resources fields, and in particular to a kind of that biomass castoff and steel slag are carried out grinding
Afterwards, and biomass castoff micro mist is modified using slag micro powder and obtains steel slag based biomass active carbon.
Background technique
Time in all one's life of people about 80% is to spend indoors, therefore indoor environment effect the most frequently contacts with people
Place, the health of the superiority and inferiority of air quality inhabitation people by directly affecting.Building heat preservation is insulated now with people
Performance and interior decoration beautification require, and cause indoor environment volatile organic compounds concentration to improve, lead to indoor air quality
Problem is got worse, and wherein formaldehyde is one of typical pollutant in room air, has become the coke of research indoor air quality
Point problem.
Active carbon is a kind of carbonaceous material with flourishing porous structure Yu abundant specific surface area, is widely used in interior
The absorption of atmospheric volatility organic compound.However on the one hand since active carbon generallys use timber, prepared by bamboo, cause
Sustainable development that is at high cost and being unfavorable for ecological environment；The service life of another aspect active carbon is short, be easy to cause indoor ring
The secondary pollution in border；And active carbon is modified using metal oxide, the service life and drop of active carbon can be improved
Formaldehyde performance is solved, but will lead to preparation cost increase, therefore significantly limits the active carbon pollutant of environment removal indoors
Application.For steel slag as the solid waste generated in steelmaking process, essential mineral is mutually tricalcium silicate, dicalcium silicate, calcium
The oxide formation of forsterite, calcium aluminoferrite and silicon, magnesium, iron (24.5%~39.4%), manganese (2.1%~3.4%), phosphorus
Solid solution, also containing a small amount of free calcium oxide and metallic iron etc..If (such as: shell, fruit using steel slag and biomass obsolete material
Core, stalk etc.) carry out it is compound prepare steel slag based biomass active carbon, it is useless to biomass using the metal oxide contained in steel slag
It abandons material and is modified processing, not only solve the problem that modified activated carbon is at high cost, environmental disruption is big, and expanded steel slag
With the value added applications of biomass obsolete material, the new approaches of " controlling danger with useless " are realized.
Summary of the invention
In order to solve on the one hand to cause at high cost and be unfavorable for since active carbon generallys use timber, prepared by bamboo
The sustainable development of ecological environment；The service life of another aspect active carbon is short, be easy to cause the secondary pollution of indoor environment；With
And active carbon is modified using metal oxide, the service life and degradation of formaldehyde performance of active carbon can be improved, still
The problem of will lead to preparation cost increase.After biomass castoff and steel slag are carried out grinding by the present invention, and it is micro- using steel slag
Powder, which is modified biomass castoff micro mist, obtains steel slag based biomass active carbon, while to grinding speed, grinding time, super
Acoustical power, ultrasonic disperse time, drying temperature, calcination temperature, calcining time etc. are controlled, to realize biomass castoff
It is recycled with the high added value of steel slag, obtains degradation of formaldehyde superior performance and the low-cost modified life for degradation of formaldehyde
Species activity charcoal.
In order to solve the above technical problems, the present invention is achieved by the following technical programs.
The present invention provides a kind of steel slag based biomass active carbon for degradation of formaldehyde, active carbon formulas by weight hundred
Divide as follows than raw material:
The biomass castoff is one of shell, fruit stone, stalk or a variety of；The steel slag is the bored slag of heat, electric furnace
One of slag and wind disintegrating slag are a variety of；The steel slag composite grinding aids are the mixing of ethylene glycol, triethanolamine and dehydrated alcohol
Object, the mass ratio of ethylene glycol, triethanolamine and dehydrated alcohol are 1: 1: 1, and wherein ethylene glycol, triethanolamine and dehydrated alcohol are
It analyzes pure；The phosphoric acid is that analysis is pure；The dehydrated alcohol is that analysis is pure；The hydrochloric acid is that analysis is pure；The water is deionization
Water.
Invention also provides the preparation methods of the above-mentioned steel slag based biomass active carbon for degradation of formaldehyde, specific to wrap
Include following steps:
Biomass castoff is cleaned first and after drying, using frequency conversion planetary ball mill with revolving speed 400r/min~
600r/min grinding 45min~90min obtains biomass castoff micro mist；Steel slag is mixed with steel slag composite grinding aids
Afterwards, it is micro- to be obtained with revolving speed 600r/min~800r/min grinding 60min~120min for steel slag using frequency conversion planetary ball mill
Powder.
Secondly after biomass castoff micro mist being mixed with phosphoric acid, the ultrasound for being 400W~600W using ultrasonic power
Wave cell crushing instrument ultrasonic disperse 30min~60min obtains biomass castoff micro mist solution；Slag micro powder and water are carried out
Mixing and be added dropwise hydrochloric acid after, using ultrasonic power be 400W~600W ultrasonic cell disruption instrument ultrasonic disperse 30min~
60min obtains slag micro powder solution；Biomass castoff micro mist solution is mixed with slag micro powder solution and is added anhydrous
After ethyl alcohol, the ultrasonic cell disruption instrument ultrasonic disperse 90min~150min for being 600W~800W using ultrasonic power obtains steel
Slag based biomass active carbon precursor.
It is -0.08MPa~-0.04MPa and temperature that steel slag based biomass active carbon precursor, which is finally placed in vacuum pressure,
It is 200 DEG C~300 DEG C using calcination temperature after degree carries out activation 180min~270min for 60 DEG C~90 DEG C of vacuum oven
Experimental furnace roast 15min~45min, obtain steel slag based biomass active carbon.
The principles of science of the invention:
(1) surfactant molecule having using steel slag composite grinding aids forms one single point on steel slag surface to be ground
Sub- adsorbent thin film, steel slag is broken in crushing process, the free electrovalent bond and steel slag composite modifier generated on its plane of disruption
The lewis' acid of offer is neutralized, and to reach elimination or weaken slag micro powder aggregation tendency, and prevents the plane of disruption compound.
(2) steel slag composite grinding aids are adsorbed in steel slag surface, using steel slag composite grinding aids to the wetting action of steel slag and
Suction-operated reduces steel slag surface free energy, weakens steel slag intercrystalline resultant force, generation squeezes crack stress, to reach destruction steel
The effect of slag hardness.
(3) Fe in steel slag main chemical compositions2O3The adsorption capacity that can effectively improve active carbon is conducive to formaldehyde and is having
Have and form enrichment in the active carbon of porous structure, MnO has catalytic degradation effect to the formaldehyde being enriched in active carbon hole.
(4) timber, bamboo generation system are taken using the biomass obsolete material (such as: shell, fruit stone, stalk) containing charcoal ingredient
Standby activated carbon from activated sludge, not only reduces Activated Carbon Production cost, and promote the sustainable development of ecological environment.
(5) steel slag based biomass active carbon utilizes the suction of the high absorption property and steel slag PARA FORMALDEHYDE PRILLS(91,95) of activated carbon from activated sludge
Attached degradation and catalytic degradation act on, and realize that the Synergistic degradation formaldehyde of activated carbon from activated sludge and steel slag acts on.
Compared with prior art, the invention has the following advantages:
1, the present invention solves the prior art on the one hand since active carbon generallys use timber, prepared by bamboo, causes
Sustainable development that is at high cost and being unfavorable for ecological environment；The service life of another aspect active carbon is short, be easy to cause indoor ring
The secondary pollution in border；And active carbon is modified using steel slag, reduce the production cost 50% of modified activated carbon~
60%, improve its market competitiveness and application range.
2, the present invention compound prepares steel slag using steel slag and biomass obsolete material (such as: shell, fruit stone, stalk) progress
Based biomass active carbon is modified processing to biomass obsolete material using the metal oxide contained in steel slag, expands
The value added applications of steel slag and biomass obsolete material realize the new approaches of " controlling danger with useless "；Simultaneously relative at present by steel
Slag and active carbon carry out the steel slag modified activated carbon technology of physical mixed, and the present invention utilizes grinding aid technology and chemically composited technology phase
In conjunction with greatly improving the performance and stability of steel slag based biomass active carbon.
3, a kind of steel slag based biomass active carbon and preparation method thereof for degradation of formaldehyde of the present invention meets related energy conservation
Environmentally friendly, circular economy policy requirements.
Detailed description of the invention
Fig. 1 is that environmental test chamber simulates indoor environment schematic diagram；
In figure: 1, Temperature Humidity Sensor；2, thief hatch；3, fan；4, light source；A, formaldehyde gas；B, steel slag based biomass
Active carbon.
Specific embodiment
The present invention is described in detail below in conjunction with specific embodiment, but the present invention is not limited to following embodiments.
Embodiment 1
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The biomass castoff is shell；The steel slag is electroslag；The steel slag composite grinding aids are ethylene glycol, three
The mixture of ethanol amine and dehydrated alcohol, the mass ratio of ethylene glycol, triethanolamine and dehydrated alcohol are 1: 1:1, wherein ethylene glycol,
Triethanolamine and dehydrated alcohol are that analysis is pure；The phosphoric acid is that analysis is pure；The dehydrated alcohol is that analysis is pure；The hydrochloric acid is
It analyzes pure；The water is deionized water.
After biomass castoff is cleaned and dried first, using frequency conversion planetary ball mill with revolving speed 500r/min grinding
45min obtains biomass castoff micro mist；After steel slag is mixed with steel slag composite grinding aids, the planetary ball of frequency conversion is utilized
Grinding machine obtains slag micro powder with revolving speed 800r/min grinding 90min.
Secondly after biomass castoff micro mist being mixed with phosphoric acid, the supersonic cell for being 400W using ultrasonic power
Broken instrument ultrasonic disperse 30min, obtains biomass castoff micro mist solution；Slag micro powder is mixed with water and hydrochloric acid is added dropwise
Afterwards, the ultrasonic cell disruption instrument ultrasonic disperse 50min for being 600W using ultrasonic power obtains slag micro powder solution；It will be biological
It is the super of 700W using ultrasonic power after matter waste micro mist solution is mixed with slag micro powder solution and dehydrated alcohol is added
Sound wave cell crushing instrument ultrasonic disperse 110min obtains steel slag based biomass active carbon precursor.
Steel slag based biomass active carbon precursor is finally placed in vacuum pressure is -0.08MPa and temperature is 80 DEG C
After vacuum oven carries out activation 240min, 45min is roasted using the experimental furnace that calcination temperature is 250 DEG C, it is raw to obtain steel slag base
Species activity charcoal.
Embodiment 2
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The biomass castoff is stalk；The steel slag is the bored slag of heat；The steel slag composite grinding aids are ethylene glycol, three
The mixture of ethanol amine and dehydrated alcohol, the mass ratio of ethylene glycol, triethanolamine and dehydrated alcohol are 1: 1: 1, wherein ethylene glycol,
Triethanolamine and dehydrated alcohol are that analysis is pure；The phosphoric acid is that analysis is pure；The dehydrated alcohol is that analysis is pure；The hydrochloric acid is
It analyzes pure；The water is deionized water.
After biomass castoff is cleaned and dried first, using frequency conversion planetary ball mill with revolving speed 600r/min grinding
90min obtains biomass castoff micro mist；After steel slag is mixed with steel slag composite grinding aids, the planetary ball of frequency conversion is utilized
Grinding machine obtains slag micro powder with revolving speed 600r/min grinding 105min.
Secondly after biomass castoff micro mist being mixed with phosphoric acid, the supersonic cell for being 500W using ultrasonic power
Broken instrument ultrasonic disperse 60min, obtains biomass castoff micro mist solution；Slag micro powder is mixed with water and hydrochloric acid is added dropwise
Afterwards, the ultrasonic cell disruption instrument ultrasonic disperse 40min for being 400W using ultrasonic power obtains slag micro powder solution；It will be biological
It is the super of 800W using ultrasonic power after matter waste micro mist solution is mixed with slag micro powder solution and dehydrated alcohol is added
Sound wave cell crushing instrument ultrasonic disperse 150min obtains steel slag based biomass active carbon precursor.
It is -0.06MPa and at a temperature of 90 °C that steel slag based biomass active carbon precursor, which is finally placed in vacuum pressure,
After vacuum oven carries out activation 270min, 15min is roasted using the experimental furnace that calcination temperature is 200 DEG C, it is raw to obtain steel slag base
Species activity charcoal.
Embodiment 3
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The biomass castoff is fruit stone；The steel slag is wind disintegrating slag；The steel slag composite grinding aids are ethylene glycol, three
The mixture of ethanol amine and dehydrated alcohol, the mass ratio of ethylene glycol, triethanolamine and dehydrated alcohol are 1: 1: 1, wherein ethylene glycol,
Triethanolamine and dehydrated alcohol are that analysis is pure；The phosphoric acid is that analysis is pure；The dehydrated alcohol is that analysis is pure；The hydrochloric acid is
It analyzes pure；The water is deionized water.
After biomass castoff is cleaned and dried first, using frequency conversion planetary ball mill with revolving speed 400r/min grinding
75min obtains biomass castoff micro mist；After steel slag is mixed with steel slag composite grinding aids, the planetary ball of frequency conversion is utilized
Grinding machine obtains slag micro powder with revolving speed 700r/min grinding 60min.
Secondly after biomass castoff micro mist being mixed with phosphoric acid, the supersonic cell for being 600W using ultrasonic power
Broken instrument ultrasonic disperse 40min, obtains biomass castoff micro mist solution；Slag micro powder is mixed with water and hydrochloric acid is added dropwise
Afterwards, the ultrasonic cell disruption instrument ultrasonic disperse 60min for being 500W using ultrasonic power obtains slag micro powder solution；It will be biological
It is the super of 600W using ultrasonic power after matter waste micro mist solution is mixed with slag micro powder solution and dehydrated alcohol is added
Sound wave cell crushing instrument ultrasonic disperse 90min obtains steel slag based biomass active carbon precursor.
Steel slag based biomass active carbon precursor is finally placed in vacuum pressure is -0.04MPa and temperature is 70 DEG C
After vacuum oven carries out activation 180min, 30min is roasted using the experimental furnace that calcination temperature is 300 DEG C, it is raw to obtain steel slag base
Species activity charcoal.
Embodiment 4
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The biomass castoff is stalk；The steel slag is electroslag；The steel slag composite grinding aids are ethylene glycol, three
The mixture of ethanol amine and dehydrated alcohol, the mass ratio of ethylene glycol, triethanolamine and dehydrated alcohol are 1: 1: 1, wherein ethylene glycol,
Triethanolamine and dehydrated alcohol are that analysis is pure；The phosphoric acid is that analysis is pure；The dehydrated alcohol is that analysis is pure；The hydrochloric acid is
It analyzes pure；The water is deionized water.
After biomass castoff is cleaned and dried first, using frequency conversion planetary ball mill with revolving speed 500r/min grinding
60min obtains biomass castoff micro mist；After steel slag is mixed with steel slag composite grinding aids, the planetary ball of frequency conversion is utilized
Grinding machine obtains slag micro powder with revolving speed 700r/min grinding 120min.
Secondly after biomass castoff micro mist being mixed with phosphoric acid, the supersonic cell for being 500W using ultrasonic power
Broken instrument ultrasonic disperse 50min, obtains biomass castoff micro mist solution；Slag micro powder is mixed with water and hydrochloric acid is added dropwise
Afterwards, the ultrasonic cell disruption instrument ultrasonic disperse 30min for being 600W using ultrasonic power obtains slag micro powder solution；It will be biological
It is the super of 600W using ultrasonic power after matter waste micro mist solution is mixed with slag micro powder solution and dehydrated alcohol is added
Sound wave cell crushing instrument ultrasonic disperse 130min obtains steel slag based biomass active carbon precursor.
Steel slag based biomass active carbon precursor is finally placed in vacuum pressure is -0.08MPa and temperature is 60 DEG C
After vacuum oven carries out activation 210min, 45min is roasted using the experimental furnace that calcination temperature is 250 DEG C, it is raw to obtain steel slag base
Species activity charcoal.
Embodiment 5
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The biomass castoff is shell；The steel slag is the bored slag of heat；The steel slag composite grinding aids are ethylene glycol, three
The mixture of ethanol amine and dehydrated alcohol, the mass ratio of ethylene glycol, triethanolamine and dehydrated alcohol are 1: 1: 1, wherein ethylene glycol,
Triethanolamine and dehydrated alcohol are that analysis is pure；The phosphoric acid is that analysis is pure；The dehydrated alcohol is that analysis is pure；The hydrochloric acid is
It analyzes pure；The water is deionized water.
After biomass castoff is cleaned and dried first, using frequency conversion planetary ball mill with revolving speed 600r/min grinding
45min obtains biomass castoff micro mist；After steel slag is mixed with steel slag composite grinding aids, the planetary ball of frequency conversion is utilized
Grinding machine obtains slag micro powder with revolving speed 600r/min grinding 75min.
Secondly after biomass castoff micro mist being mixed with phosphoric acid, the supersonic cell for being 600W using ultrasonic power
Broken instrument ultrasonic disperse 60min, obtains biomass castoff micro mist solution；Slag micro powder is mixed with water and hydrochloric acid is added dropwise
Afterwards, the ultrasonic cell disruption instrument ultrasonic disperse 30min for being 400W using ultrasonic power obtains slag micro powder solution；It will be biological
It is the super of 700W using ultrasonic power after matter waste micro mist solution is mixed with slag micro powder solution and dehydrated alcohol is added
Sound wave cell crushing instrument ultrasonic disperse 150min obtains steel slag based biomass active carbon precursor.
Steel slag based biomass active carbon precursor is finally placed in vacuum pressure is -0.06MPa and temperature is 60 DEG C
After vacuum oven carries out activation 180min, 30min is roasted using the experimental furnace that calcination temperature is 200 DEG C, it is raw to obtain steel slag base
Species activity charcoal.
Embodiment 6
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The biomass castoff is fruit stone；The steel slag is wind disintegrating slag；The steel slag composite grinding aids are ethylene glycol, three
The mixture of ethanol amine and dehydrated alcohol, the mass ratio of ethylene glycol, triethanolamine and dehydrated alcohol are 1: 1: 1, wherein ethylene glycol,
Triethanolamine and dehydrated alcohol are that analysis is pure；The phosphoric acid is that analysis is pure；The dehydrated alcohol is that analysis is pure；The hydrochloric acid is
It analyzes pure；The water is deionized water.
After biomass castoff is cleaned and dried first, using frequency conversion planetary ball mill with revolving speed 400r/min grinding
60min obtains biomass castoff micro mist；After steel slag is mixed with steel slag composite grinding aids, the planetary ball of frequency conversion is utilized
Grinding machine obtains slag micro powder with revolving speed 800r/min grinding 120min.
Secondly after biomass castoff micro mist being mixed with phosphoric acid, the supersonic cell for being 400W using ultrasonic power
Broken instrument ultrasonic disperse 40min, obtains biomass castoff micro mist solution；Slag micro powder is mixed with water and hydrochloric acid is added dropwise
Afterwards, the ultrasonic cell disruption instrument ultrasonic disperse 50min for being 500W using ultrasonic power obtains slag micro powder solution；It will be biological
It is the super of 800W using ultrasonic power after matter waste micro mist solution is mixed with slag micro powder solution and dehydrated alcohol is added
Sound wave cell crushing instrument ultrasonic disperse 110min obtains steel slag based biomass active carbon precursor.
It is -0.04MPa and at a temperature of 90 °C that steel slag based biomass active carbon precursor, which is finally placed in vacuum pressure,
After vacuum oven carries out activation 270min, 15min is roasted using the experimental furnace that calcination temperature is 300 DEG C, it is raw to obtain steel slag base
Species activity charcoal.
Comparative example 1
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The biomass castoff is fruit stone；The steel slag is wind disintegrating slag；The phosphoric acid is that analysis is pure；The dehydrated alcohol
It is pure to analyze；The hydrochloric acid is that analysis is pure；The water is deionized water.
After biomass castoff is cleaned and dried first, using frequency conversion planetary ball mill with revolving speed 400r/min grinding
60min obtains biomass castoff micro mist；By steel slag utilization frequency conversion planetary ball mill with revolving speed 800r/min grinding
120min obtains slag micro powder.
Secondly after biomass castoff micro mist being mixed with phosphoric acid, the supersonic cell for being 400W using ultrasonic power
Broken instrument ultrasonic disperse 40min, obtains biomass castoff micro mist solution；Slag micro powder is mixed with water and hydrochloric acid is added dropwise
Afterwards, the ultrasonic cell disruption instrument ultrasonic disperse 50min for being 500W using ultrasonic power obtains slag micro powder solution；It will be biological
It is the super of 800W using ultrasonic power after matter waste micro mist solution is mixed with slag micro powder solution and dehydrated alcohol is added
Sound wave cell crushing instrument ultrasonic disperse 110min obtains steel slag based biomass active carbon precursor.
It is -0.04MPa and at a temperature of 90 °C that steel slag based biomass active carbon precursor, which is finally placed in vacuum pressure,
After vacuum oven carries out activation 270min, 15min is roasted using the experimental furnace that calcination temperature is 300 DEG C, it is raw to obtain steel slag base
Species activity charcoal.
Comparative example 2
Component and its quality proportioning used for preparing product of the present invention 100g are as follows:
The biomass castoff is fruit stone；The phosphoric acid is that analysis is pure；The dehydrated alcohol is that analysis is pure；The hydrochloric acid
It is pure to analyze；The water is deionized water.
After biomass castoff is cleaned and dried first, using frequency conversion planetary ball mill with revolving speed 400r/min grinding
60min obtains biomass castoff micro mist.
Secondly after biomass castoff micro mist being mixed with phosphoric acid, the supersonic cell for being 400W using ultrasonic power
Broken instrument ultrasonic disperse 40min, obtains biomass castoff micro mist solution；After water is mixed with hydrochloric acid, ultrasonic function is utilized
Rate is the ultrasonic cell disruption instrument ultrasonic disperse 50min of 500W, obtains hydrochloric acid solution；By biomass castoff micro mist solution with
After hydrochloric acid solution is mixed and dehydrated alcohol is added, the ultrasonic cell disruption instrument ultrasonic disperse for being 800W using ultrasonic power
110min obtains activated carbon from activated sludge precursor.
It is that -0.04MPa and vacuum at a temperature of 90 °C are done that activated carbon from activated sludge precursor, which is finally placed in vacuum pressure,
After dry case carries out activation 270min, 15min is roasted using the experimental furnace that calcination temperature is 300 DEG C, obtains activated carbon from activated sludge.
Examples 1 to 6 and comparative example 1~2 are prepared, performance testing process is as follows:
Environmental test chamber simulation indoor environment (as shown in Figure 1) generallyd use using European Union.Utilize Temperature Humidity Sensor
1, at 23+0.5 DEG C, humidity is arranged in 45+3% temperature setting.The formaldehyde that 2.5 μ L concentration are 37%~40% is analyzed pure solution
It is added dropwise on culture dish, is put into environmental test chamber, it is made sufficiently to volatilize in environmental test chamber, make entire environment using fan 3
Formaldehyde gas a concentration in test chamber is 1mg/m3.The steel slag based biomass active carbon b of 40g is loaded into 0.1m2Test board
On, it is excited using light source 4, it is made to generate degradation.Using acetylacetone,2,4-pentanedione spectrophotometry (GB/T15516-1995),
It using thief hatch 2, selects to sample the gas in the cabin 10L when 10h, detects the concentration variation of formaldehyde gas in environmental test chamber, from
And the degradation of formaldehyde efficiency of steel slag based biomass active carbon can be calculated.
The degradation of formaldehyde efficiency of 1 steel slag based biomass active carbon of table
| Serial number | Degradation of formaldehyde efficiency/% |
| Embodiment 1 | 58.4 |
| Embodiment 2 | 60.6 |
| Embodiment 3 | 42.3 |
| Embodiment 4 | 55.2 |
| Embodiment 5 | 46.5 |
| Embodiment 6 | 53.1 |
| Comparative example 1 | 39.7 |
| Comparative example 2 | 31.2 |
Claims (2)
1. a kind of steel slag based biomass active carbon for degradation of formaldehyde, which is characterized in that the active carbon is former by weight percentage
Expect as follows:
The biomass castoff is one of shell, fruit stone, stalk or a variety of；The steel slag be the bored slag of heat, electroslag and
One of wind disintegrating slag is a variety of；The steel slag composite grinding aids are the mixture of ethylene glycol, triethanolamine and dehydrated alcohol, second
The mass ratio of glycol, triethanolamine and dehydrated alcohol is 1: 1: 1, and wherein ethylene glycol, triethanolamine and dehydrated alcohol are analysis
It is pure；The phosphoric acid is that analysis is pure；The dehydrated alcohol is that analysis is pure；The hydrochloric acid is that analysis is pure；The water is deionized water.
2. a kind of preparation method for the steel slag based biomass active carbon of degradation of formaldehyde, feature as described in claim 1 exist
In including the following steps:
After biomass castoff is cleaned and dried first, using frequency conversion planetary ball mill with revolving speed 400r/min~600r/
Min grinding 45min~90min obtains biomass castoff micro mist；After steel slag is mixed with steel slag composite grinding aids, benefit
With frequency conversion planetary ball mill with revolving speed 600r/min~800r/min grinding 60min~120min, slag micro powder is obtained；
Secondly thin using the ultrasonic wave that ultrasonic power is 400W~600W after biomass castoff micro mist being mixed with phosphoric acid
Born of the same parents are crushed instrument ultrasonic disperse 30min~60min, obtain biomass castoff micro mist solution；Slag micro powder is mixed with water
And after hydrochloric acid is added dropwise, the ultrasonic cell disruption instrument ultrasonic disperse 30min~60min for being 400W~600W using ultrasonic power,
Obtain slag micro powder solution；Biomass castoff micro mist solution is mixed with slag micro powder solution and dehydrated alcohol is added
Afterwards, the ultrasonic cell disruption instrument ultrasonic disperse 90min~150min for being 600W~800W using ultrasonic power obtains steel slag base
Activated carbon from activated sludge precursor；
Steel slag based biomass active carbon precursor is finally placed in vacuum pressure is -0.08MPa~-0.04MPa and temperature is
After 60 DEG C~90 DEG C of vacuum oven carries out activation 180min~270min, the reality for being 200 DEG C~300 DEG C using calcination temperature
Furnace roasting 15min~45min is tested, steel slag based biomass active carbon is obtained.
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| CN110408254A (en) * | 2019-07-03 | 2019-11-05 | 安徽工业大学 | The fire-retardant, antirust of one kind metallurgical solid waste pigments and fillers integrated with constitution and preparation method thereof |
| CN110465322A (en) * | 2019-08-30 | 2019-11-19 | 四川轻化工大学 | A kind of steel slag/nitrogen-dopped activated carbon composite material and preparation method and application |
| CN112875699A (en) * | 2021-02-07 | 2021-06-01 | 西安科技大学 | Preparation method and application of special steel slag-based biomass activated carbon |
| CN114180876A (en) * | 2021-12-10 | 2022-03-15 | 广西柳钢环保股份有限公司 | High-activity concrete admixture and method for producing high-activity concrete admixture by using stainless steel slag |
| CN114669268A (en) * | 2022-04-11 | 2022-06-28 | 明正鹏达(天津)环保科技有限公司 | Preparation method and application of biochar-steel slag composite adsorption material |
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| CN112875699A (en) * | 2021-02-07 | 2021-06-01 | 西安科技大学 | Preparation method and application of special steel slag-based biomass activated carbon |
| CN114180876A (en) * | 2021-12-10 | 2022-03-15 | 广西柳钢环保股份有限公司 | High-activity concrete admixture and method for producing high-activity concrete admixture by using stainless steel slag |
| CN114669268A (en) * | 2022-04-11 | 2022-06-28 | 明正鹏达(天津)环保科技有限公司 | Preparation method and application of biochar-steel slag composite adsorption material |
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Application publication date: 20190510 |