CN110707222A - Method for preparing flexible substrate material capable of adsorbing lanthanum oxide by aid of mantis shrimp diaphragms - Google Patents
Method for preparing flexible substrate material capable of adsorbing lanthanum oxide by aid of mantis shrimp diaphragms Download PDFInfo
- Publication number
- CN110707222A CN110707222A CN201910636777.XA CN201910636777A CN110707222A CN 110707222 A CN110707222 A CN 110707222A CN 201910636777 A CN201910636777 A CN 201910636777A CN 110707222 A CN110707222 A CN 110707222A
- Authority
- CN
- China
- Prior art keywords
- flexible substrate
- substrate material
- lanthanum oxide
- adsorbing
- mantis shrimp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- 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
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3021—Milling, crushing or grinding
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3071—Washing or leaching
-
- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3085—Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- 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
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention relates to a preparation method of a flexible material, and provides a method for preparing a flexible substrate material capable of adsorbing lanthanum oxide by using a mantis shrimp diaphragm, aiming at the problem that common chitin hardly adsorbs lanthanide metal oxide. And transferring filter residues into an acetic acid solution, performing ultrasonic treatment and then centrifuging, taking supernate, and evaporating water to obtain the flexible substrate material. According to the invention, chitin is modified to add a large amount of amino and carboxyl functional groups, and the adsorption capacity of the flexible substrate material prepared from the modified chitin to lanthanum oxide is greatly improved, so that powerful support is provided for the development and application of the flexible substrate material in flexible screens such as AMOLED (active matrix organic light emitting diode) containing lanthanide metal oxide.
Description
Technical Field
The invention relates to a preparation method of a flexible material, in particular to a method for preparing a flexible substrate material capable of adsorbing lanthanum oxide by using a mantis shrimp diaphragm.
Background
The flexible display screen is light and thin in volume, good in flexibility and good in development prospect. The substrate of the flexible display screen is generally made of flexible chemical plastics, one of the problems of the chemical plastics is that the chemical plastics are not easy to decompose and damage the environment, and the other is that the material for preparing the substrate of the flexible display screen needs to have high light transmittance, high thermal stability and high tensile strength, and the chemical plastics are usually high in price. Chitin is a natural polymer with second-order content to cellulose in nature, and widely exists in natural resources such as crustaceans, fungi, insects, mollusks and the like. Chitin has good biocompatibility and degradability, can be prepared into a chitin film with certain flexibility and transparency, and can be used for replacing chemical plastics to prepare a substrate of a flexible display screen.
Lanthanide series oxide is resistant to acid and alkali corrosion, stable in high-temperature physical and chemical properties, and widely focused in the fields of semiconductors, luminescent materials and the like. The lanthanide series metal oxide TFT technology independently developed by China southern China university is reported to be the first time of successfully developing a color flexible AMOLED (active matrix organic light emitting diode, the most advanced flexible screen technology at present) display screen technology in China, and breaks the technical barrier of foreign countries. Therefore, the method has great significance for preparing the flexible screen with excellent properties by greatly improving the adsorption capacity of the lanthanide metal oxide. However, the common chitin hardly adsorbs lanthanide metal oxides, and thus an ideal technical structure is needed to solve the above problems.
Disclosure of Invention
The invention aims to overcome the problems in the prior art, and provides a method for preparing a flexible substrate material capable of adsorbing lanthanum oxide by using a mantis shrimp diaphragm, the prepared flexible substrate material is biodegradable and environment-friendly, the adsorption capacity of the flexible substrate material on lanthanide metal oxide is up to 107.8 mg/g chitin, and powerful support is provided for the development and application of the flexible substrate material in flexible screens such as AMOLED (active matrix organic light emitting diode) containing lanthanide metal oxide.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for preparing a flexible substrate material capable of adsorbing lanthanum oxide by using a mantis shrimp membrane is characterized in that the dried mantis shrimp membrane is firstly crushed into micro-nano-scale membrane powder, then the membrane powder is added into an amino-triethyl acid solution, N-dimethylaniline, potassium persulfate and hydrogen peroxide are added, the mixture is sealed and continuously stirred at normal temperature for 8 to 12 hours, a product is filtered, filter residues are washed to be neutral by water, and the vacuum drying is carried out. And transferring filter residues into an acetic acid solution, performing ultrasonic treatment and then centrifuging, taking supernate, and evaporating water to obtain the flexible substrate material.
The content of chitin in the diaphragm of the Oratosquilla is very high, which accounts for about 82.8% of the total mass, and the residual impurities comprise minerals (mainly calcium carbonate), crude protein, grease and the like, the mass percent of the minerals is only 8.6%, and the mass percent of the protein is also only 7.2%. Because the mineral content and the protein content are low, the high-purity chitin (the ash content is less than 1%) can be obtained by only processing a small amount of low-concentration amino-triethyl acid solution when extracting effective components, so the Mantis shrimp diaphragm is adopted as a raw material, the processing steps are simple, and the reagent consumption is low; the flexible substrate material prepared from the oratosquillas diaphragm belongs to waste utilization, the raw materials are cheap, and the solid waste treatment cost of the oratosquillas diaphragm is reduced; the diaphragm of the Oratosquilla is an ecological material, and the flexible substrate material prepared from the diaphragm of the Oratosquilla is degradable and environment-friendly. The method comprises the steps of modifying chitin by using N, N-dimethylaniline as a modifier and potassium persulfate and hydrogen peroxide as initiators, adding a large amount of amino and carboxyl functional groups on the chitin, and preparing the flexible substrate material after a series of purification treatments such as acetic acid solution dissolution, ultrasound, centrifugation and the like, wherein the adsorption capacity of the flexible substrate material on lanthanum oxide is greatly improved.
Preferably, the concentration of the amino-triethyl acid solution is 10 to 25% (w: v).
Preferably, the material-liquid ratio of the membrane powder to the amino-triethyl acid solution is 1g (20-50) mL.
Preferably, the addition amounts of potassium persulfate and hydrogen peroxide are each 0.1 to 10% (w: v) of the aqueous solution of iminodisuccinic acid sodium.
Preferably, the feed-liquid ratio of the filter residue to the acetic acid solution is 1g (30-50) mL.
Preferably, the sonication is carried out continuously at 900W in an ice bath for 1 to 2 hours.
Preferably, the centrifugation is carried out at 12000 rpm and 4 ℃ for 30 min.
Therefore, the invention has the following beneficial effects: (1) the raw material mantis shrimp diaphragm of the invention has high chitin content, and high-purity chitin can be obtained only by treating a small amount of low-concentration amino-triethyl acid solution, so that the treatment steps are simple, the reagent consumption is low, and the method is convenient and environment-friendly; (2) the flexible substrate material prepared by using the oratosquillas diaphragm belongs to waste utilization, the raw materials are cheap, and the solid waste treatment cost of the oratosquillas diaphragm is reduced; (3) the flexible substrate material prepared from the chitin is degradable and environment-friendly; (4) the chitin is modified to add a large number of amino and carboxyl functional groups, the adsorption capacity of the flexible substrate material prepared from the modified chitin to lanthanum oxide is greatly improved, and powerful support is provided for development and application of the flexible substrate material in flexible screens such as AMOLED (active matrix organic light emitting diode) containing lanthanide metal oxide.
Drawings
Fig. 1 is a graph showing the amount of adsorption of lanthanum oxide by the flexible base materials of example 1 and comparative example.
Fig. 2 is an SEM image of the flexible base material of the comparative example after adsorbing lanthanum oxide.
Fig. 3 is an SEM image of the flexible substrate material of example 1 after adsorbing lanthanum oxide.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
In the present invention, unless otherwise specified, all the raw materials and equipment used are commercially available or commonly used in the art, and the methods in the examples are conventional in the art unless otherwise specified.
Example 1
Firstly, crushing a dried mantis shrimp diaphragm into micro-nano diaphragm powder by using an ultrafine crusher, then adding 10g of diaphragm powder into 200mL of amino-triethyl-acid solution, wherein the concentration of the amino-triethyl-acid solution is 15% (w: v), then adding 10g of N, N-dimethylaniline, 10g of potassium persulfate and 10g of hydrogen peroxide, sealing, continuously stirring for 12 hours at normal temperature, filtering a product, washing filter residues to be neutral by using water, and carrying out vacuum drying. And transferring the filter residue into an acetic acid solution with the pH value equal to 3, continuously performing ultrasonic treatment for 1 hour in an ice bath environment by using a 900W ultrasonic cell disruptor, then centrifuging for 30 min at the rotation speed of 12000 rpm and the temperature of 4 ℃, taking supernatant, and evaporating water to dryness in an oil bath at the temperature of 100 ℃ to obtain the flexible substrate material.
Example 2
Firstly, crushing a dried mantis shrimp diaphragm into micro-nano diaphragm powder by using an ultrafine crusher, then adding 10g of diaphragm powder into 500mL of amino-triethyl-acid solution, wherein the concentration of the amino-triethyl-acid solution is 25% (w: v), then adding 50g of N, N-dimethylaniline, 50g of potassium persulfate and 0.5g of hydrogen peroxide, sealing, continuously stirring for 8 hours at normal temperature, filtering a product, washing filter residues to be neutral by using water, and drying in vacuum. And transferring the filter residue into an acetic acid solution with the pH value equal to 2, continuously performing ultrasonic treatment for 2 hours in an ice bath environment by using a 900W ultrasonic cell disruptor, centrifuging for 50 minutes at the rotation speed of 12000 rpm and the temperature of 0 ℃, taking supernatant, and evaporating water to dryness in an oil bath at the temperature of 100 ℃ to obtain the flexible substrate material.
Example 3
Firstly, crushing a dried mantis shrimp diaphragm into micro-nano diaphragm powder by using an ultrafine crusher, then adding 10g of diaphragm powder into 300mL of aminotriacetic acid solution, wherein the concentration of the aminotriacetic acid solution is 10% (w: v), continuously adding 15g of N, N-dimethylaniline, 0.3g of potassium persulfate and 30g of hydrogen peroxide, sealing, continuously stirring for 10 hours at normal temperature, filtering a product, washing filter residues to be neutral by using water, and performing vacuum drying. And transferring the filter residue into an acetic acid solution with the pH value equal to 3, continuously performing ultrasonic treatment for 1 hour in an ice bath environment by using a 900W ultrasonic cell disruptor, centrifuging for 20 min at the rotation speed of 12000 rpm and the temperature of 4 ℃, taking supernatant, and evaporating water to dryness in an oil bath at the temperature of 100 ℃ to obtain the flexible substrate material.
Comparative example
10g of the membrane powder prepared in example 1 was added to 200mL of an aminotrietric acid solution having a concentration of 15% (w: v), sealed, stirred continuously at room temperature for 12 hours, the product was filtered, the filter residue was washed with water to neutrality, and dried in vacuo. And transferring the filter residue into an acetic acid solution with the pH value equal to 3, continuously performing ultrasonic treatment for 1 hour in an ice bath environment by using a 900W ultrasonic cell disruptor, centrifuging for 30 min at the rotation speed of 12000 rpm and the temperature of 4 ℃, taking supernatant, and evaporating water to dryness in an oil bath at the temperature of 100 ℃ to obtain the flexible substrate material.
The comparative example has less modification step than example 1, the other treatments are identical, and the products are coated with a layer of lanthanum oxide respectively, and the influence of the modification step on the properties of the flexible material can be seen through characterization. As shown in FIG. 1, the flexible substrate material made of unmodified chitin has no adsorption capacity to lanthanum oxide basically, while the flexible substrate material made of modified chitin has an adsorption capacity to lanthanum as high as 91.9mg/g chitin (107.8 mg/g chitin after being converted into lanthanum oxide). In addition, as shown in fig. 2 and 3, after the lanthanide oxide is adsorbed, no lanthanum oxide particles can be found on the surface of the unmodified chitin; a large amount of lanthanum oxide particles are distributed on the surface of the modified chitin, which shows that the adsorption capacity of the modified chitin on lanthanide metal oxide is greatly improved. The material provides powerful support for development and application of the material in flexible screens such as AMOLED containing lanthanide metal oxides.
The raw material mantis shrimp diaphragm of the invention has high chitin content, and high-purity chitin can be obtained only by treating a small amount of low-concentration amino-triethyl acid solution, so that the treatment steps are simple, the reagent consumption is low, and the method is convenient and environment-friendly; the flexible substrate material prepared from the oratosquillas diaphragm belongs to waste utilization, the raw materials are cheap, and the solid waste treatment cost of the oratosquillas diaphragm is reduced; the flexible substrate material prepared from the chitin is degradable and environment-friendly; the chitin is modified to add a large number of amino and carboxyl functional groups, the adsorption capacity of the flexible substrate material prepared from the modified chitin to lanthanum oxide is greatly improved, and powerful support is provided for development and application of the flexible substrate material in flexible screens such as AMOLED (active matrix organic light emitting diode) containing lanthanide metal oxide.
Claims (7)
1. A method for preparing a flexible substrate material capable of adsorbing lanthanum oxide by using a mantis shrimp membrane is characterized in that a dried mantis shrimp membrane is firstly crushed into micro-nano-scale membrane powder, then the membrane powder is added into an amino-triethyl acid solution, N-dimethylaniline, potassium persulfate and hydrogen peroxide are added, the mixture is sealed and continuously stirred at normal temperature for 8 to 12 hours, a product is filtered, filter residues are washed to be neutral by water, vacuum drying is carried out, the filter residues are transferred into an acetic acid solution, centrifugation is carried out after ultrasonic treatment, supernatant is taken, and water is evaporated to dryness, so that the flexible substrate material is obtained.
2. The method for preparing a flexible substrate material capable of adsorbing lanthanum oxide from mantis shrimp membranes as claimed in claim 1, wherein the concentration of the amino-acetic acid solution is 10-25% (w: v).
3. The method for preparing the flexible substrate material capable of adsorbing the lanthanum oxide from the mantis shrimp membranes as claimed in claim 1, wherein the feed-liquid ratio of the membrane powder to the amino-triethyl acid solution is 1g (20-50) mL.
4. The method for preparing a flexible substrate material capable of adsorbing lanthanum oxide from a mantis shrimp membrane as claimed in claim 1, 2 or 3, wherein the addition amount of potassium persulfate and hydrogen peroxide is 0.1-10% (w: v) of the aqueous solution of iminodisuccinic acid.
5. The method for preparing the flexible substrate material capable of adsorbing the lanthanum oxide from the mantis shrimp membranes as claimed in claim 1, wherein the ratio of the filter residue to the acetic acid solution is 1g (30-50) mL.
6. The method for preparing the flexible substrate material capable of adsorbing the lanthanum oxide by using the mantis shrimp membrane as claimed in claim 1, wherein the ultrasonic condition is 900W, and the continuous ultrasonic treatment is carried out for 1-2 hours in an ice bath.
7. The method for preparing the flexible substrate material capable of adsorbing the lanthanum oxide from the mantis shrimp membranes as claimed in claim 1, wherein the centrifugation is performed at 12000 rpm and 4 ℃ for 30 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910636777.XA CN110707222B (en) | 2019-07-15 | 2019-07-15 | Method for preparing flexible substrate material capable of adsorbing lanthanum oxide by aid of mantis shrimp diaphragms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910636777.XA CN110707222B (en) | 2019-07-15 | 2019-07-15 | Method for preparing flexible substrate material capable of adsorbing lanthanum oxide by aid of mantis shrimp diaphragms |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110707222A true CN110707222A (en) | 2020-01-17 |
| CN110707222B CN110707222B (en) | 2022-07-22 |
Family
ID=69193135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910636777.XA Active CN110707222B (en) | 2019-07-15 | 2019-07-15 | Method for preparing flexible substrate material capable of adsorbing lanthanum oxide by aid of mantis shrimp diaphragms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110707222B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342821A (en) * | 2013-07-10 | 2013-10-09 | 南京林业大学 | Method for preparing chitin nanofibre by using shrimp and crab shells |
| CN109225157A (en) * | 2018-10-26 | 2019-01-18 | 浙江海洋大学 | A kind of preparation method of lanthanum ion adsorbent |
| CN109824797A (en) * | 2018-10-26 | 2019-05-31 | 浙江海洋大学 | A method of preparing chitin |
-
2019
- 2019-07-15 CN CN201910636777.XA patent/CN110707222B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342821A (en) * | 2013-07-10 | 2013-10-09 | 南京林业大学 | Method for preparing chitin nanofibre by using shrimp and crab shells |
| CN109225157A (en) * | 2018-10-26 | 2019-01-18 | 浙江海洋大学 | A kind of preparation method of lanthanum ion adsorbent |
| CN109824797A (en) * | 2018-10-26 | 2019-05-31 | 浙江海洋大学 | A method of preparing chitin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110707222B (en) | 2022-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Jin et al. | Polyethyleneimine-bacterial cellulose bioadsorbent for effective removal of copper and lead ions from aqueous solution | |
| AU2011201389A1 (en) | Biosorbents for the extraction of metals | |
| JP2008035853A (en) | Method for producing oligosaccharide, etc., from material containing polysaccharide | |
| JPH0559844B2 (en) | ||
| CN108325506A (en) | A kind of preparation method of the modified cellulose aeroge of absorption heavy metal | |
| JP5732390B2 (en) | Method for the co-production of chitin, its derivatives and polymers containing glucose, mannose and / or galactose by fermentation of yeast Pichia pastoris | |
| CN101993257B (en) | Method for preparation of high-activity compound organic fertilizer by waste acid liquid of D-glucosamine hydrochloride | |
| CN101289518A (en) | Method for preparing chitin and process for preparing chitosan by using chitin | |
| CN1687437A (en) | Method of high post extraction of acyl Gellan | |
| CN104525148A (en) | Method for preparing ammonium sulfamate bacterial celluloses for absorbing Pb2+ in waste water | |
| CN101125893A (en) | Method for preparing high-purity fucoidin from slag and liquid of sea-tangle chemical industry production | |
| CN107638872B (en) | Fly ash/magnetic straw composite material and preparation method and application thereof | |
| Ding et al. | Study on the “glutamic acid-enzymolysis” process for extracting chitin from crab shell waste and its by-product recovery | |
| CN106749764A (en) | The method that a kind of step of quaternary ammonium salt ionic liquid one prepares chitin in shrimp and crab shells | |
| WO2005059153A1 (en) | A METHOD FOR SEPARATING, EXTRACTING AND PURIFING POLY- β -HYDROXYALKANOATES (PHA’s) DIRECTLY FROM BACTERIAL FERMENTED BROTH | |
| Tan et al. | Adsorption of Ni2+ on amine-modified mycelium of Penicillium chrysogenum | |
| CN110707222B (en) | Method for preparing flexible substrate material capable of adsorbing lanthanum oxide by aid of mantis shrimp diaphragms | |
| Ghaed et al. | Biosorption of copper ions by Bacillus and Aspergillus species | |
| Dai et al. | Multi-strategy in production of high titer gluconic acid by the fermentation of concentrated cellulosic hydrolysate with Gluconobacter oxydans | |
| CN105749872A (en) | Application of immobilized sericin protein gel particle adsorption material in treatment of cadmium-containing heavy metal wastewater | |
| Taokaew et al. | Biotransformation of okara extracted protein to nanocellulose and chitin by Gluconacetobacter xylinus and Bacillus pumilus | |
| CN1772769A (en) | Treatment process of reusing crab and shrimp shell | |
| CN100345627C (en) | Process for preparing cation sorbent and its application | |
| CN1259426C (en) | Gellan gum post-extraction method | |
| KR20100071530A (en) | The bead composition which contains chitosan and surfactants for water treatment and a method of preparing thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |