CN107902769A - Sewage-treating agent of Biocomposite material and preparation method thereof - Google Patents
Sewage-treating agent of Biocomposite material and preparation method thereof Download PDFInfo
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- CN107902769A CN107902769A CN201711233334.3A CN201711233334A CN107902769A CN 107902769 A CN107902769 A CN 107902769A CN 201711233334 A CN201711233334 A CN 201711233334A CN 107902769 A CN107902769 A CN 107902769A
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- sewage
- treating agent
- biocomposite
- silkworm excrement
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
- C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
- C02F5/105—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances combined with inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a kind of sewage-treating agent of Biocomposite material and preparation method thereof.The sewage-treating agent of the Biocomposite material includes the raw material of following parts by weight：12~15 parts of alum, 20~30 parts of cross-linked rectorite, modified 5~10 parts of silkworm excrement, 10~15 parts of sodium hydroxide, 12~15 parts of polyethyleneimine, 10~15 parts of modification sulphonation lignin, biological 1~5 part of base porous compound material.Of the invention its adds two kinds of new biological carbon materials, absorption heavy metal and the suction-operated of other pollutants of sewage-treating agent are enhanced, it can effectively handle industrial pollution, and treatment effect is obvious, performance is stablized, and the industrial wastewater after processing meets the discharge standard of national regulation.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to sewage-treating agent and preparation method thereof.
Background technology
Sewage disposal is typically the processing of production waste and sanitary sewage.Production waste includes trade effluent, rural sewage
And medical sewage.It is most with the discharge capacity of trade effluent in this three.At present, handling the method for trade effluent has physics, changes
A variety of methods such as, biology, comprehensive.Physical method is that the undissolved suspension acted on by physical separation in recycling sewage is dirty
Contaminate thing, filtering, centrifugation etc..Such physical method is simple, but can only do based process, and treatment effect is bad, dissolving
Pollutant in water cannot be handled, and efficiency is low.Biological treatment be made by the metabolism of microorganism it is molten in sewage
The organic pollution of solution, colloid and suspended state is converted into stable harmless object.But this method equipment investment is big, operating cost
Height, and it is difficult to heavy-metal ion removal.Chemical treatment method is by launching chemical reagent, is sent out with the pollutant in sewage
Raw neutralization, flocculation, redox etc. are reacted to achieve the purpose that to remove pollutant.This mode treated sewage is more thorough, place
Discharge standard can be reached after reason, floor space is relatively small, and effect is more obvious, therefore is generally used.Chemical method
In sewage-treating agent selection, to prepare be crucial.
The content of the invention
The object of the present invention is to provide a kind of sewage-treating agent of Biocomposite material, it adds two kinds of new biologies
Carbon material, enhances absorption heavy metal and the suction-operated of other pollutants of sewage-treating agent.It can effectively handle industrial dirt
Dye, treatment effect is obvious, and performance is stablized, and the industrial wastewater after processing meets the discharge standard of national regulation.
The purpose of the present invention is achieved through the following technical solutions：
A kind of sewage-treating agent of Biocomposite material, it includes the raw material of following parts by weight：20~30 parts of alum, hand over
20~30 parts of rectorite of connection, 10~15 parts of polyferric chloride, 10~15 parts of sodium hydroxide, 10~15 parts of polyethyleneimine, change
Property 10~15 parts of lignosulfonate, biological 1~5 part of base porous compound material, modified 5~10 parts of silkworm excrement.
Preferred as technical solution, the sewage-treating agent of Biocomposite material of the invention includes the original of following parts by weight
Material：It is 25~30 parts of alum, 25~30 parts of cross-linked rectorite, 12~15 parts of polyferric chloride, 10~12 parts of sodium hydroxide, poly-
12~15 parts of aziridine, 10~12 parts of modification sulphonation lignin, biological 3~5 parts of base porous compound material, modified silkworm excrement 5~
8 parts.
Preferred as technical solution, the sewage-treating agent of Biocomposite material of the invention includes the original of following parts by weight
Material：30 parts of alum, 25 parts of cross-linked rectorite, 15 parts of polyferric chloride, 10 parts of sodium hydroxide, 15 parts of polyethyleneimine, modification
10 parts of lignosulfonate, biological 5 parts of base porous compound material, modified 5 parts of silkworm excrement.
Preferred as technical solution, the preparation of the biology base porous compound material is by sodium carboxymethylcellulose gel
With trimesic acid solution according to Solute mass ratio be 1~3：1 is uniformly mixed, and is subsequently poured into and is inserted with 15 ° of angle of inclination copper sheets
Mould in, be then placed under -40~-50 DEG C of environment and be freeze-dried, you can obtain biological base porous compound material.Its
Middle sodium carboxymethylcellulose gel is to mix sodium carboxymethylcellulose under stirring with water, you can obtains carboxymethyl fibre
The plain sodium gel of dimension；Trimesic acid solution is that trimesic acid is dissolved in ultrasonic dissolution in absolute ethyl alcohol, you can it is molten to obtain trimesic acid
Liquid.
Preferred as technical solution, the preparation of the modified silkworm excrement is Faeces bombycis and ZnCl2Solution is 1 according to solid-liquid ratio：
It is freeze-dried after 60 mixing swellings, then rear silkworm excrement will be freezed in N2In, carried out at 700 DEG C activation reaming reaction 1 it is small when, so
Silkworm excrement base porous carbon material is obtained after cleaning, centrifuge and drying again afterwards；It is again 1 according to solid-liquid ratio with copper-bath by it：
Drying is centrifuged after 60 vibration mixing, plasma reactor is placed into, is passed through O2, input voltage 20V, modification time 10min into
Row surface is modified, modified cleaning, and drying can obtain modified silkworm excrement.
The preparation method of the sewage-treating agent of the Biocomposite material of the present invention, first weighs raw material, then according to parts by weight
Alum, cross-linked rectorite, modification sulphonation lignin, biological base porous compound material are mixed, crushes, crosses 50~100 mesh, throw
Enter in container, add polyethyleneimine, polyferric chloride stirring mixing in 20~30 minutes, add sodium hydroxide stirring
Mixing 20~30 minutes, is eventually adding modified silkworm excrement, is uniformly mixed, you can obtain the sewage disposal of Biocomposite material
Agent.
The application method of the sewage-treating agent of the Biocomposite material of the present invention, 0.2 is put into according to every 1 cubic metre of sewage
The sewage-treating agent of~0.3kg Biocomposite materials, while start sewage stirrer 20~30 minutes so that biological composite wood
The sewage-treating agent of material fully with stopping stirring after waste water, allows the sewage-treating agent of Biocomposite material and sewage to send out
Raw reaction.
The polyferric chloride of the present invention has good flocculating effect, and hydrolysis rate is fast, and aquation is weak, has wadding
Solidifying ability, easily forms alumen ustum, and closely knit, and sinking speed is fast, is influenced by water temperature change small, can meet in flow process
The middle requirement for producing shearing force.Alum can be chemically reacted with the hydrogen sulfide in water, phosphate and alkaline hydrated oxide degree
Sediment is generated, the sulfide precipitation in sewage is come out, it forms in alumen ustum and adsorbable water the material for being difficult to degrade, and is
The flocculant of high efficiency low cost.With obvious precipitation, deodorization, oil removing, sterilization, dephosphorization, reduction water outlet COD and BOD and other effects.
Ionization generates Al3+ after alum is dissolved in water, and Al3+ is combined with water power from the OH- of generation generates aluminium hydroxide,
Alumine hydroxide colloid particle carries positive charge, meets with electronegative silt micelle, electric charge is neutralized each other, loses electric charge
Micelle, flocculation is agglomerating, thus achievees the purpose that sedimentation, water purification.
Polyethyleneimine has high adhesion and adsorptivity, it is with polar group (amino) and hydrophobic group (vinyl)
Structure, can be combined with different materials.Polyethyleneimine exists with polymerizing cationically in water, can neutralize and adsorb
All anionic species, moreover it is possible to chelaization heavy metal ion.
Modified silkworm excrement not only has native three dimensional pleated structure and containing a large amount of carboxyls, hydroxyl and amino group etc., but also
High-ratio surface microcellular structure is formed, these microcellular structures can adsorb heavy metal in sanitary sewage, and due to the increasing of specific surface area
Greatly, adsorbance substantially increases, while it contains carboxyl, hydroxyl and amino group, can make with the polar groups of sewage
With accelerating the processing of sewage.
The hierarchical porous structure of three-dimensional network intercommunication is formed in biological base porous compound material, and with abundant nanometer
Hole surface, is very beneficial for improving the adsorption capacity to binding molecule, simultaneously because CMC has substantial amounts of hydroxy functional group, therefore
Material has obvious adsorption capacity to the heavy metal in sewage.
Cross-linked rectorite utilizes the cation exchange property of Rectorite.Its stable structure, does not expand, and has
Larger specific surface area, ion exchange capacity and micropore size and have the characteristics that heat endurance is good, surface acidity is strong, inhale
Attached ability is big, is a kind of adsorbent of excellent performance.
Modification sulphonation lignin has the functional groups such as phenolic hydroxyl group, alcoholic extract hydroxyl group, carboxyl, sulfonic group, has flocculation, chelating, resistance
Dirt etc. acts on；Suspended matter in water removal, microorganism, bacterium etc. can also be gone, improves aquatic environment.
Compared with prior art, the invention has the advantages that：
(1) sewage-treating agent of Biocomposite material of the invention, adds two kinds of biomass carbon materials, modified silkworm excrement
With biological base porous compound material, the absorption of heavy metal element and some other polar contaminants in sewage can be significantly improved
Processing.
(2) present invention using science formula by various sewage disposal components collocation get up, ensure flocculant, adsorbent,
Antisludging agent etc. plays one's part to the full, and improves the treatment effeciency to sewage so that COD of sewage, BOD after processing substantially reduce, symbol
Close the discharge standard of national requirements.
(3) sewage-treating agent of Biocomposite material of the invention can also effectively act as inhibition, scale inhibition and suppress algae
The technique effect of growth, effectively reduces the fouling and corrosion of system, reduces production cost, and sewage is reduced while purifying sewage
The cleaning process of processing pond.
Embodiment
With reference to embodiment, the present invention will be further described, but the scope of protection of present invention is not limited to
In the scope of embodiment statement.
It is modified the previously prepared of silkworm excrement：The preparation of modified silkworm excrement is that 10kg silkworm excrements are added 300L mass concentrations 0.50kg/L
ZnCl2It is freeze-dried after solution swelling, then rear silkworm excrement will be freezed in N2In, it is small that activation reaming reaction 1 is carried out at 700 DEG C
When, silkworm excrement base porous carbon material is obtained after then cleaning, centrifuge and drying again；Again by itself and 0.1mol/L copper-baths
It is 1 according to solid-liquid ratio：Drying is centrifuged after 60 vibration mixing, plasma reactor is placed into, is passed through O2, input voltage 20V,
Modification time 10min carries out surface modification, modified cleaning, and drying can obtain modified silkworm excrement.
Biological base porous compound material it is previously prepared：By 5kg sodium carboxymethylcelluloses and 50L water under stirring
Mixing, you can obtain sodium carboxymethylcellulose gel.5kg trimesic acids are dissolved in ultrasonic dissolution in 30L absolute ethyl alcohols, you can
Obtain trimesic acid solution.Then it is 1~3 according to mass ratio by sodium carboxymethylcellulose gel and trimesic acid solution：1 stirs
Mix uniformly mixed, be subsequently poured into and be inserted with the mould for the copper sheet that angle of inclination is 15 °, it is dry to be then placed in -40~-50 DEG C of freezings
It is dry in dry machine to can obtain biomass porous composite material.
Embodiment 1
A kind of sewage-treating agent of Biocomposite material, raw material composition are：30 parts of alum, 25 parts of cross-linked rectorite, polymerization
15 parts of ferric trichloride, 10 parts of sodium hydroxide, 15 parts of polyethyleneimine, 10 parts of modification sulphonation lignin, the porous composite wood of bio-based
5 parts of material, modified 5 parts of silkworm excrement.First according to parts by weight weigh raw material, then by alum, cross-linked rectorite, modification sulphonation lignin,
Biological base porous compound material mixing, crushes, crosses 100 mesh, put into container, add polyethyleneimine, polyferric chloride
Stirring mixes for 20 minutes, adds sodium hydroxide and is stirred 30 minutes, is eventually adding modified silkworm excrement, is uniformly mixed, i.e.,
It can obtain the sewage-treating agent of Biocomposite material..
Embodiment 2
A kind of sewage-treating agent of Biocomposite material, raw material composition are：25 parts of alum, 30 parts of cross-linked rectorite, polymerization
12 parts of ferric trichloride, 12 parts of sodium hydroxide, 12 parts of polyethyleneimine, 12 parts of modification sulphonation lignin, the porous composite wood of bio-based
3 parts of material, modified 8 parts of silkworm excrement.First according to parts by weight weigh raw material, then by alum, cross-linked rectorite, modification sulphonation lignin,
Biological base porous compound material mixing, crushes, crosses 50 mesh, put into container, add polyethyleneimine, polyferric chloride
Stirring mixes for 30 minutes, adds sodium hydroxide and is stirred 20 minutes, is eventually adding modified silkworm excrement, is uniformly mixed, i.e.,
It can obtain the sewage-treating agent of Biocomposite material.
Embodiment 3
A kind of sewage-treating agent of Biocomposite material, raw material composition are：28 parts of alum, 26 parts of cross-linked rectorite, polymerization
15 parts of ferric trichloride, 11 parts of sodium hydroxide, 12 parts of polyethyleneimine, 12 parts of modification sulphonation lignin, the porous composite wood of bio-based
4 parts of material, modified 6 parts of silkworm excrement base multi-stage porous Carbon Materials.First according to parts by weight weigh raw material, then by alum, cross-linked rectorite,
Modification sulphonation lignin, biological base porous compound material mixing, crush, cross 80 mesh, put into container, add polyethyleneimine
Amine, polyferric chloride are stirred 25 minutes and mixed, and are added sodium hydroxide and are stirred 25 minutes, are eventually adding modified silkworm excrement,
It is uniformly mixed, you can obtain the sewage-treating agent of Biocomposite material.
Embodiment 4
A kind of sewage-treating agent of Biocomposite material, raw material composition are：20 parts of alum, 30 parts of cross-linked rectorite, polymerization
10 parts of ferric trichloride, 15 parts of sodium hydroxide, 10 parts of polyethyleneimine, 15 parts of modification sulphonation lignin, the porous composite wood of bio-based
1 part of material, modified 10 parts of silkworm excrement.Raw material first is weighed according to parts by weight, it is then that alum, cross-linked rectorite, modification sulphonation is wooden
Element, biological base porous compound material mixing, crush, cross 100 mesh, put into container, add polyethyleneimine, polymerization trichlorine
Change iron and stir mixing in 20 minutes, add sodium hydroxide and be stirred 20 minutes, be eventually adding modified silkworm excrement, be stirred
It is even, you can to obtain the sewage-treating agent of Biocomposite material.
Embodiment 5
A kind of sewage-treating agent of Biocomposite material, raw material composition are：30 parts of alum, 20 parts of cross-linked rectorite, polymerization
15 parts of ferric trichloride, 10 parts of sodium hydroxide, 15 parts of polyethyleneimine, 10 parts of modification sulphonation lignin, the porous composite wood of bio-based
2 parts of material, modified 5 parts of silkworm excrement base multi-stage porous Carbon Materials.First according to parts by weight weigh raw material, then by alum, cross-linked rectorite,
Modification sulphonation lignin, biological base porous compound material mixing, crush, cross 50 mesh, put into container, add polyethyleneimine
Amine, polyferric chloride are stirred 30 minutes and mixed, and are added sodium hydroxide and are stirred 30 minutes, are eventually adding modified silkworm excrement,
It is uniformly mixed, you can obtain the sewage-treating agent of Biocomposite material.
The sewage-treating agent that embodiment 1~5 is prepared to Biocomposite material puts into 0.2 according to every 1 cubic metre of sewage
The sewage-treating agent of~0.3kg Biocomposite materials, while start sewage stirrer 20~30 minutes so that biological composite wood
The sewage-treating agent of material fully with stopping stirring after waste water, makes the sewage-treating agent of Biocomposite material and sewage anti-
Raw effect.Sewage after the sewage-treating agent processing of Biocomposite material using the present invention meets discharging standards.
Claims (8)
1. the sewage-treating agent of Biocomposite material, it is characterised in that it includes the raw material of following parts by weight：Alum 20~30
Part, 20~30 parts of cross-linked rectorite, 10~15 parts of polyferric chloride, 10~15 parts of sodium hydroxide, polyethyleneimine 10~15
Part, 10~15 parts of modification sulphonation lignin, biological 1~5 part of base porous compound material, modified 5~10 parts of silkworm excrement.
2. the sewage-treating agent of Biocomposite material according to claim 1, it is characterised in that the Biocomposite material
Sewage-treating agent include the raw materials of following parts by weight：25~30 parts of alum, 25~30 parts of cross-linked rectorite, polyferric chloride
12~15 parts, 10~12 parts of sodium hydroxide, 12~15 parts of polyethyleneimine, 10~12 parts of modification sulphonation lignin, bio-based it is more
3~5 parts of hole composite material, modified 5~8 parts of silkworm excrement.
3. the sewage-treating agent of Biocomposite material according to claim 1, it is characterised in that the Biocomposite material
Sewage-treating agent include the raw materials of following parts by weight：30 parts of alum, 25 parts of cross-linked rectorite, 15 parts of polyferric chloride, hydrogen
10 parts of sodium oxide molybdena, 15 parts of polyethyleneimine, 10 parts of modification sulphonation lignin, biological 5 parts of base porous compound material, modified silkworm excrement 5
Part.
4. according to the sewage-treating agent of any Biocomposite material of claims 1 to 3, it is characterised in that：The biology
It by sodium carboxymethylcellulose gel and trimesic acid solution according to Solute mass ratio is 1~3 that the preparation of base porous compound material, which is,：
1 is uniformly mixed, and is subsequently poured into and is inserted with the mould of 15 ° of angle of inclination copper sheets, be then placed under -40~-50 DEG C of environment into
Row freeze-drying, you can obtain biological base porous compound material.
5. the sewage-treating agent of Biocomposite material according to claim 4, it is characterised in that：The carboxymethyl cellulose
Sodium gel is to mix sodium carboxymethylcellulose under stirring with water, you can obtains sodium carboxymethylcellulose gel；Equal benzene
Three acid solutions are that trimesic acid is dissolved in ultrasonic dissolution in absolute ethyl alcohol, you can obtain trimesic acid solution.
6. according to the sewage-treating agent of any Biocomposite material of claims 1 to 3, it is characterised in that：The modification
Silkworm excrement is by Faeces bombycis and ZnCl2Solution is 1 according to solid-liquid ratio：It is freeze-dried after 30 mixing swellings, then rear silkworm excrement will be freezed in N2
Under protection, carried out at a high temperature of 700 DEG C activation reaming reaction 1 it is small when, then clean, centrifuge again, drying and obtain silkworm excrement Quito
Hole Carbon Materials；It is again 1 according to solid-liquid ratio with copper-bath by it：60 vibration mixing, centrifugation drying, it is anti-to place into plasma
Device is answered, is passed through O2, input voltage 20V, modification time 10min progress surface modification, modified cleaning, drying is to be modified
Silkworm excrement.
7. the preparation method of the sewage-treating agent of the Biocomposite material as described in claim 1~6 is any, it is characterised in that
Raw material first is weighed according to parts by weight, then by alum, cross-linked rectorite, modification sulphonation lignin, biological base porous compound material
Mixing, crushes, and crosses 50~100 mesh, puts into container, adds polyethyleneimine, polyferric chloride stirs 20~30 minutes
Mix, add sodium hydroxide and be stirred 20~30 minutes, be eventually adding modified silkworm excrement, be uniformly mixed, you can obtain
The sewage-treating agent of Biocomposite material.
8. the application method of the sewage-treating agent of the Biocomposite material as described in claim 1~6 is any, it is characterised in that
According to the sewage-treating agent of every 1 cubic metre of sewage input 0.2~0.3kg Biocomposite materials, while start sewage stirrer 20
~30 minutes, sewage-treating agent fully with stop stirring after waste water, allow Biocomposite material sewage-treating agent with it is dirty
Water reacts, and achievees the purpose that sewage disposal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711233334.3A CN107902769A (en) | 2017-11-30 | 2017-11-30 | Sewage-treating agent of Biocomposite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711233334.3A CN107902769A (en) | 2017-11-30 | 2017-11-30 | Sewage-treating agent of Biocomposite material and preparation method thereof |
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| CN107902769A true CN107902769A (en) | 2018-04-13 |
Family
ID=61849557
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| CN201711233334.3A Pending CN107902769A (en) | 2017-11-30 | 2017-11-30 | Sewage-treating agent of Biocomposite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108773886A (en) * | 2018-07-09 | 2018-11-09 | 佛山舒宜添科技有限公司 | A kind of textile waste cleanser and preparation method thereof |
| CN115999520A (en) * | 2023-02-16 | 2023-04-25 | 内蒙古农业大学 | Method for preparing pH response lignin-based adsorbent |
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| CN106622151A (en) * | 2015-11-03 | 2017-05-10 | 中国石油化工股份有限公司 | Composite containing metal-organic framework material and preparation method and application thereof |
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| CN103663617B (en) * | 2013-12-11 | 2016-01-27 | 广东瀚蓝环保工程技术有限公司 | A kind of method of wastewater treatment containing grease |
| CN106622151A (en) * | 2015-11-03 | 2017-05-10 | 中国石油化工股份有限公司 | Composite containing metal-organic framework material and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108773886A (en) * | 2018-07-09 | 2018-11-09 | 佛山舒宜添科技有限公司 | A kind of textile waste cleanser and preparation method thereof |
| CN115999520A (en) * | 2023-02-16 | 2023-04-25 | 内蒙古农业大学 | Method for preparing pH response lignin-based adsorbent |
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Application publication date: 20180413 |