CN107876027B - One kind porous water-absorbing material for air purification and method made of animal wastes - Google Patents
One kind porous water-absorbing material for air purification and method made of animal wastes Download PDFInfo
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- CN107876027B CN107876027B CN201711208692.9A CN201711208692A CN107876027B CN 107876027 B CN107876027 B CN 107876027B CN 201711208692 A CN201711208692 A CN 201711208692A CN 107876027 B CN107876027 B CN 107876027B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28054—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their surface properties or porosity
- B01J20/28057—Surface area, e.g. B.E.T specific surface area
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/80—Water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
Abstract
The invention discloses one kind porous water-absorbing material for air purification made of animal wastes.The scavenging material is made of following component configuration：Animal wastes 30~50wt% of composite, 1~2wt% of graphite, 2~5wt% of graphene, 20~30wt% of calcium sulfate, 15~20wt% of calcium chloride；Present invention utilizes animal wastes especially wormcast and or chicken manure and containing the combination of titanium particle, keeps the dust carrier of titaniferous blocking by sintering, form porous carrier.Porous carrier specific surface area with higher has good water absorbing properties, has good adsorptivity.The porous carrier provided by the invention has new approach to the utilization of animal wastes especially wormcast and/or chicken manure, while decreasing pollution of the animal wastes to environment.Adhere to graphite, graphene, calcium sulfate and calcium chloride on the basis of this porous carrier, forms the material that structure is more firm, multiparticle is adhered to, water absorbing capacity is high, detergent power is strong.
Description
Technical field
The present invention relates to material for air purification technical fields, more particularly to a kind of porous water-absorbing made of animal wastes
Material for air purification.
Background technique
Currently, the processing of animal wastes, is handled substantially around compost, as the biology such as feed resource or biofermentation
Mode.But above-mentioned processing mode, the processing time is long, there are certain requirements to environmental carrying capacity, and sometimes there are also generate two
Secondary pollution.And simultaneously, increasingly deeply concerned, environmental requirement of the people to family or public arena with people to environmental problem,
Including air purification degree, humidity etc., a new height is all reached.How to make the processing to animal wastes more environmentally friendly higher
How effect, make the processed material of animal wastes have new purposes, be a new project.
Summary of the invention
In view of this, how the technical problem to be solved by the present invention is to provide a kind of suction porous made of animal wastes
Aqueous material for air purification provides the new way of a kind of pair of animal wastes processing.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of water imbibition material for air purification, by following component
Configuration is made：Animal wastes 30~50wt% of composite, 1~2wt% of graphite, 2~5wt% of graphene, calcium sulfate 20~
30wt%, 15~20wt% of calcium chloride；
Wherein, the animal wastes composite is made of following steps：
Step S1, animal wastes are dried to water content 10% or so in 105~110 DEG C, by broken, grinding, screening
To 100~150 mesh, the first product is obtained；
Step S2, the first product and dilute hydrochloric acid solution are pressed into solid-to-liquid ratio 1：2~5 ratio mixing, is filtered, then after stirring
It is washed with deionized water to neutrality, secondary filter, obtains the second product；
Step S3, deionized water, dispersing agent is added in the second product, ultrasonic disperse 30min is added at 95~105 DEG C
Titanium sulfate and ammonium hydroxide keep pH 4.0 or so, persistently stir 2~6h, cooling third product；Wherein, the second product, go from
Sub- water, dispersing agent, titanium sulfate, ammonium hydroxide mass ratio be 1：1~2：0.2~0.4：0.1~0.2：2~5；The dispersing agent is
AMP；
Step S4, by third product filtering, it is washed to neutrality, secondary filter obtains the 4th product；
Step S5, mixed and modified solution is added into the 4th product, is calcined after filtering is sufficiently stirred, calcination temperature is
400~500 DEG C, calcination time is 1~3h, then activates 2~4h in 700~800 DEG C of heat preservations, then takes out to obtain the 5th product；
Wherein, the mass ratio of the 4th product and mixed and modified solution is 1：0.3~0.8；Wherein, the mixed and modified solution is：Sulfuric acid
5~10wt% of aluminium, 5~8wt% of phosphoric acid, 2~5wt% of silver nitrate, surplus are deionized water；
Step S6, the 5th product is rinsed through water to neutrality, then spray-dried, screening process, and obtained animal wastes are made
Object.
Preferably, the animal wastes are chicken manure or wormcast.
Preferably, animal wastes composite is made of following steps：
Step S1, animal wastes are dried to water content 10% or so in 105~110 DEG C, by broken, grinding, screening
To 100 mesh, the first product is obtained；
Step S2, the first product and dilute hydrochloric acid solution are pressed into solid-to-liquid ratio 1：2~3 ratio mixing, is filtered, then after stirring
It is washed with deionized water to neutrality, secondary filter, obtains the second product；
Step S3, deionized water, dispersing agent is added in the second product, ultrasonic disperse 30min is added at 95~105 DEG C
Titanium sulfate and ammonium hydroxide keep pH 4.0 or so, persistently stir 2~3h, cooling third product；Wherein, the second product, go from
Sub- water, dispersing agent, titanium sulfate, ammonium hydroxide mass ratio be 1：1~2：0.2~0.4：0.1~0.2：2~3；The dispersing agent is
AMP95；
Step S4, by third product filtering, it is washed to neutrality, secondary filter obtains the 4th product；
Step S5, mixed and modified solution is added into the 4th product, is calcined after filtering is sufficiently stirred, calcination temperature is
400~450 DEG C, calcination time is 1~3h, then activates 2~4h in 700~800 DEG C of heat preservations, then takes out to obtain the 5th product；
Wherein, the mass ratio of the 4th product and mixed and modified solution is 1：0.5~0.8；Wherein, the mixed and modified solution is：Sulfuric acid
5~10wt% of aluminium, 5~8wt% of phosphoric acid, 2~5wt% of silver nitrate, surplus are deionized water；
Step S6, the 5th product is rinsed through deionized water to neutrality, then spray-dried, screening process, and animal excreta is made
Just composite.
The present invention also provides a kind of methods for preparing water imbibition material for air purification, include the following steps：By graphite, stone
It is crushed after black alkene, calcium sulfate mixing, adds water that the calcium sulphate soln of 20~35wt% is made；Animal wastes composite is immersed into solution
In, 24~36 hours are stood after stirring；Then animal wastes composite is impregnated 24 in the calcium chloride solution of 15~25wt%
~36 hours.
It is an advantage of the invention that：Animal wastes especially wormcast and or chicken manure and the combination containing titanium particle is utilized, leads to
Oversintering keeps the dust carrier of titaniferous blocking, forms porous carrier.Porous carrier specific surface area with higher has good
Water absorbing properties, have good adsorptivity.The porous carrier provided by the invention, to animal wastes especially wormcast and/
Or the utilization of chicken manure has new approach, while decreasing pollution of the animal wastes to environment.On the basis of this porous carrier
Upper attachment graphite, graphene, calcium sulfate and calcium chloride form more firm structure, multiparticle attachment, water absorbing capacity height, purification
The strong material of ability.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in the embodiment of the present invention
Technical solution is clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than complete
The embodiment in portion.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, shall fall within the protection scope of the present invention.Unless otherwise explicitly stated, otherwise entire
In specification and claims, the term " include " or its transformations will be understood as be include institute
The element or component of statement, and do not exclude other elements or other components.
Dedicated word " exemplary " means " being used as example, embodiment or illustrative " herein.Here as " exemplary "
Illustrated any embodiment should not necessarily be construed as preferred or advantageous over other embodiments.
In addition, in order to better illustrate the present invention, numerous details is given in specific embodiment below.
It will be appreciated by those skilled in the art that without certain details, the present invention equally be can be implemented.In some instances, for
Method well known to those skilled in the art, means, element are not described in detail, in order to highlight purport of the invention.
The present invention provides a kind of water imbibition material for air purification containing animal wastes composite.Wherein, animal wastes
Composite is made of following steps：
Step S1, animal wastes are dried to water content 10% or so in 105~110 DEG C, by broken, grinding, screening
To 100~150 mesh, the first product is obtained.By this step, the fine grained of animal wastes is obtained as raw material, carries out next step
Preparation.
Step S2, the first product and dilute hydrochloric acid solution are pressed into solid-to-liquid ratio 1：2~5 ratio mixing, is filtered, then after stirring
It is washed to neutrality, secondary filter obtains the second product.First product is embathed into filtering by dilute hydrochloric acid solution, obtains second
Product.
Step S3, deionized water, dispersing agent is added in the second product, ultrasonic disperse 30min is added at 95~105 DEG C
Titanium sulfate and ammonium hydroxide keep pH 4.0 or so, persistently stir 2~6h, cooling third product；Wherein, the second product, go from
Sub- water, dispersing agent, titanium sulfate, ammonium hydroxide mass ratio be 1：1~2：0.2~0.4：0.1~0.2：2~5；The dispersing agent is
AMP.Dispersing agent is added and carries out ultrasonic disperse, so that the animal wastes particle in suspension separates, avoids generating sedimentation or solidifying
Collection.The addition of titanium sulfate and ammonium hydroxide, so that the particle of animal wastes particle and titaniferous is combined with each other or condenses together, so that containing
Titanium particle wraps up animal wastes particle or animal wastes particle package contains titanium particle, or containing titanium particle and animal wastes particle knot
It closes or condenses together.
Step S4, by third product filtering, it is washed to neutrality, secondary filter obtains the 4th product.
Step S5, mixed and modified solution is added into the 4th product, is calcined after filtering is sufficiently stirred, calcination temperature is
400~500 DEG C, calcination time is 1~3h, then activates 2~4h in 700~800 DEG C of heat preservations, then takes out to obtain the 5th product；
Wherein, the mass ratio of the 4th product and mixed and modified solution is 1：0.3~0.8；Wherein, the mixed and modified solution is：Sulfuric acid
5~10wt% of aluminium, 5~8wt% of phosphoric acid, 2~5wt% of silver nitrate, surplus are deionized water.By above-mentioned steps, animal wastes,
Especially wormcast and/or chicken manure are changed into containing the porous carrier containing titanium particle.
Step S6, the 5th product is rinsed through water to neutrality, then spray-dried, screening process, and obtained animal wastes are made
Object.
Porous carrier made of above-mentioned steps (animal wastes composite), specific surface area with higher have good
Water absorbing properties have good adsorptivity.The porous carrier provided by the invention, to animal wastes especially wormcast and/or
The utilization of chicken manure has new approach, while decreasing pollution of the animal wastes to environment.
Embodiment 1
Wormcast is dried to water content 10% or so in 110 DEG C, by broken, grinding is sized to 100 mesh, obtains first
Product；First product and dilute hydrochloric acid solution are pressed into solid-to-liquid ratio 1：2 ratio mixing, filters after stirring, is then washed with deionized water
To neutrality, secondary filter obtains the second product；Deionized water, dispersing agent, ultrasonic disperse 30min, 95 is added in second product
At DEG C, titanium sulfate (Ti (SO is added4)2) and ammonium hydroxide, pH is kept 4.0 or so, persistently stirs 3h, cooling third product；Its
In, the second product, deionized water, dispersing agent, titanium sulfate, ammonium hydroxide mass ratio be 1：1：0.2：0.1：2；The dispersing agent is
AMP；By third product filtering, it is washed to neutrality, secondary filter obtains the 4th product；It is added into the 4th product mixed and modified
Solution is calcined after filtering is sufficiently stirred, and calcination temperature is 400 DEG C, calcination time 2h, is then activated in 700 DEG C of heat preservations
2h then takes out to obtain the 5th product；Wherein, the mass ratio of the 4th product and mixed and modified solution is 1：0.3；Wherein, described mixed
Closing modified solution is：Aluminum sulfate 5wt%, phosphoric acid 5wt%, silver nitrate 2wt%, surplus are deionized water；5th product gone from
Sub- water is rinsed to neutrality, then spray-dried, screening process, and animal wastes composite 1 is made.
Embodiment 2
Chicken manure is dried to water content 10% or so convenient for 110 DEG C, by broken, grinding is sized to 150 mesh, obtains first
Product；First product and dilute hydrochloric acid solution are pressed into solid-to-liquid ratio 1：5 ratio mixing, filters after stirring, is then washed with deionized water
To neutrality, secondary filter obtains the second product；By the second product be added deionized water, dispersing agent, ultrasonic disperse 30min,
At 105 DEG C, titanium sulfate (Ti (SO is added4)2) and ammonium hydroxide, pH is kept 4.0 or so, persistently stirs 3h, cooling third product；
Wherein, the second product, deionized water, dispersing agent, titanium sulfate, ammonium hydroxide mass ratio be 1：2：0.2：0.1：3；The dispersing agent is
AMP；By third product filtering, it is washed to neutrality, secondary filter obtains the 4th product；It is added into the 4th product mixed and modified
Solution is calcined after filtering is sufficiently stirred, and calcination temperature is 450 DEG C, calcination time 3h, is then activated in 700 DEG C of heat preservations
2h then takes out to obtain the 5th product；Wherein, the mass ratio of the 4th product and mixed and modified solution is 1：0.5；Wherein, described mixed
Closing modified solution is：Aluminum sulfate 10wt%, phosphoric acid 5wt%, silver nitrate 2wt%, surplus are deionized water；5th product is floated through water
It is washed till neutrality, then spray-dried, screening process, animal wastes composite 2 is made.
Embodiment 3
Wormcast and chicken manure are pressed 1：1 mixing, is then dried to water content 10% or so in 105 DEG C, by being crushed, grinds
Mill, is sized to 100 mesh, obtains the first product；First product and dilute hydrochloric acid solution are pressed into solid-to-liquid ratio 1：3 ratio mixing, after stirring
Filtering, is then washed with deionized water to neutrality, secondary filter, obtains the second product；Deionized water, dispersion is added in second product
Titanium sulfate (Ti (SO is added at 100 DEG C in agent, ultrasonic disperse 30min4)2) and ammonium hydroxide, it keeps pH 4.0 or so, persistently stirs
5h, cooling third product；Wherein, the second product, deionized water, dispersing agent, titanium sulfate, ammonium hydroxide mass ratio be 1：2：0.4：
0.2：5；The dispersing agent is AMP；By third product filtering, it is washed to neutrality, secondary filter obtains the 4th product；To the 4th
Mixed and modified solution is added in product, is calcined after filtering is sufficiently stirred, calcination temperature is 500 DEG C, calcination time 2.5h,
Then 4h is activated in 800 DEG C of heat preservations, then takes out to obtain the 5th product；Wherein, the mass ratio of the 4th product and mixed and modified solution
It is 1：0.4；Wherein, the mixed and modified solution is：Aluminum sulfate 5wt%, phosphoric acid 8wt%, silver nitrate 5wt%, surplus be go from
Sub- water；5th product is rinsed through water to neutrality, then spray-dried, screening process, and animal wastes composite 3 is made.
Through detecting, the specific surface area of animal wastes composite 1,2,3 is 932m2/g、1019m2/ g and 986m2/g.Its performance
It is suitable with general active carbon.
Preparation example 1
By animal wastes composite 1, graphite, graphene, calcium sulfate in mass ratio 50：2：5：30 weigh；By graphite, graphite
It is crushed after alkene, calcium sulfate mixing, adds water that the calcium sulphate soln of the 30wt% containing graphite and graphene is made；Then by animal excreta
Just composite 1 immerses in solution, stands 2 hours after stirring；Then the calcium chloride again by animal wastes composite 1 in 25wt% is molten
It is impregnated 24 hours in liquid.Sample 1 is made.
Preparation example 2
By animal wastes composite 2, graphite, graphene, calcium sulfate in mass ratio 40：1：2：30 weigh；By graphite, graphite
It is crushed after alkene, calcium sulfate mixing, adds water that the calcium sulphate soln of the 30wt% containing graphite and graphene is made；Then by animal excreta
Just composite 2 immerses in solution, stands 36 hours after stirring；Then again by animal wastes composite 2 20wt% calcium chloride
It is impregnated 36 hours in solution.Sample 2 is made.
Preparation example 3
By animal wastes composite 3, graphite, graphene, calcium sulfate in mass ratio 30：2：2：25 weigh；By graphite, graphite
It is crushed after alkene, calcium sulfate mixing, adds water that the calcium sulphate soln of the 25wt% containing graphite and graphene is made；Then by animal excreta
Just composite 3 immerses in solution, stands 30 hours after stirring；Then again by animal wastes composite 3 20wt% calcium chloride
It is impregnated 24 hours in solution.Sample 3 is made.
Preparation example 4
By animal wastes composite 1, graphite, graphene, calcium sulfate in mass ratio 45：2：5：30 weigh；By graphite, graphite
It is crushed after alkene, calcium sulfate mixing, adds water that the calcium sulphate soln of the 25wt% containing graphite and graphene is made；Then by animal excreta
Just composite 1 immerses in solution, stands 24 hours after stirring；Then again by animal wastes composite 1 20wt% calcium chloride
It is impregnated 24 hours in solution.Sample 4 is made.
Through detecting, the specific surface area of sample 1,2,3,4 is 582m2/g、691m2/g、643m2/ g and 679m2/g。
Porous water-absorbing material for air purification provided by the invention, is utilized the strong absorptive of calcium sulfate and calcium chloride, leads to
The form for crossing chemical seasoning carrys out adsorbed water molecule.In the particle of calcium sulfate and calcium chloride, admixed graphite, graphene reinforcing and
Adjust the combination of itself and porous carrier.Porous carrier is used for physical absorption, by the tiny hole of porous carrier come adsorption moisture
Son.And in porous carrier, even more containing titanium particle is contained, the bacterium in the hydrone being adsorbed onto can be killed, the work of sterilization is played
With.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that：It still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (4)
1. a kind of porous water-absorbing material for air purification made of animal wastes, which is characterized in that configured and made by following component
At：Animal wastes 30~50wt% of composite, 1~2wt% of graphite, 2~5wt% of graphene, 20~30wt% of calcium sulfate, chlorination
15~20wt% of calcium；
Wherein, the animal wastes composite is made of following steps：
Step S1, animal wastes are dried to water content 10% or so in 105~110 DEG C, by broken, grinding is sized to 100
~150 mesh obtain the first product；
Step S2, the first product and dilute hydrochloric acid solution are pressed into solid-to-liquid ratio 1：2~5 ratio mixing, filters after stirring, then washes
To neutrality, secondary filter obtains the second product；
Step S3, deionized water, dispersing agent is added in the second product, sulfuric acid is added at 95~105 DEG C in ultrasonic disperse 30min
Titanium and ammonium hydroxide keep pH 4.0 or so, persistently stir 2~6h, cooling third product；Wherein, the second product, deionized water,
Dispersing agent, titanium sulfate, ammonium hydroxide mass ratio be 1：1~2：0.2~0.4：0.1~0.2：2~5；The dispersing agent is AMP；
Step S4, by third product filtering, it is washed to neutrality, secondary filter obtains the 4th product；
Step S5, mixed and modified solution is added into the 4th product, is calcined after filtering is sufficiently stirred, calcination temperature 400
~500 DEG C, calcination time is 1~3h, then activates 2~4h in 700~800 DEG C of heat preservations, then takes out to obtain the 5th product；Its
In, the mass ratio of the 4th product and mixed and modified solution is 1：0.3~0.8；Wherein, the mixed and modified solution is：Aluminum sulfate 5
~10wt%, 5~8wt% of phosphoric acid, 2~5wt% of silver nitrate, surplus are deionized water；
Step S6, the 5th product is rinsed through water to neutrality, then spray-dried, screening process, and animal wastes composite is made.
2. the porous water-absorbing material for air purification according to claim 1 made of animal wastes, which is characterized in that institute
Stating animal wastes is chicken manure or wormcast.
3. the porous water-absorbing material for air purification according to claim 1 made of animal wastes, which is characterized in that institute
Animal wastes composite is stated to be made of following steps：
Step S1, animal wastes are dried to water content 10% or so in 105~110 DEG C, by broken, grinding is sized to 100
Mesh obtains the first product；
Step S2, the first product and dilute hydrochloric acid solution are pressed into solid-to-liquid ratio 1：2~3 ratio mixing, filters after stirring, then spends
Ion is washed to neutrality, and secondary filter obtains the second product；
Step S3, deionized water, dispersing agent is added in the second product, sulfuric acid is added at 95~105 DEG C in ultrasonic disperse 30min
Titanium and ammonium hydroxide keep pH 4.0 or so, persistently stir 2~3h, cooling third product；Wherein, the second product, deionized water,
Dispersing agent, titanium sulfate, ammonium hydroxide mass ratio be 1：1~2：0.2~0.4：0.1~0.2：2~3；The dispersing agent is AMP95；
Step S4, by third product filtering, it is washed to neutrality, secondary filter obtains the 4th product；
Step S5, mixed and modified solution is added into the 4th product, is calcined after filtering is sufficiently stirred, calcination temperature 400
~450 DEG C, calcination time is 1~3h, then activates 2~4h in 700~800 DEG C of heat preservations, then takes out to obtain the 5th product；Its
In, the mass ratio of the 4th product and mixed and modified solution is 1：0.5~0.8；Wherein, the mixed and modified solution is：Aluminum sulfate 5
~10wt%, 5~8wt% of phosphoric acid, 2~5wt% of silver nitrate, surplus are deionized water；
Step S6, the 5th product is rinsed through deionized water to neutrality, then spray-dried, screening process, and animal wastes system is made
At object.
4. a kind of porous water-absorbing material for air purification made of animal wastes prepared as described in claims 1 to 3 is any
Method, which is characterized in that include the following steps：
It is crushed after graphite, graphene, calcium sulfate are mixed, adds water that the calcium sulphate soln of 20~35wt% is made；
Animal wastes composite is immersed in solution, stands 24~36 hours after stirring；
Then animal wastes composite is impregnated 24~36 hours in the calcium chloride solution of 15~25wt%.
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| CN107876027A (en) | 2018-04-06 |
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