63 results about "Dye adsorption" patented technology

The invention discloses a nanocellulose composite aerogel, a preparation method thereof and application of the nanocellulose composite aerogel in wastewater dye adsorption, and belongs to the technical field of water treatment. The preparation method comprises the following steps: blending nano cellulose, a cross-linked polymer and a nano reinforcing material under the assistance of ultrasonic waves to form stably dispersed composite sol; injecting the composite sol into a mold, carrying out pre-freezing, and then carrying out vacuum freeze drying; and immersing the aerogel obtained after freeze drying into a cross-linking agent solution for post-crosslinking treatment, and drying to obtain the nano-cellulose composite aerogel. The nano-cellulose composite aerogel provided by the invention has the beneficial effects that efficient adsorption of cationic dyes and anionic dyes is realized at the same time, and the nano-cellulose composite aerogel is suitable for advanced treatment of printing and dyeing wastewater.

The invention discloses a preparation method and application of self-crosslinking hydrogel containing a capsaicin functional structure, and belongs to the technical field of dye adsorption materials. The capsaicin functional structure monomer is introduced into an acrylic acid system, so that the self-crosslinking of the hydrogel is realized, and meanwhile, the adsorption performance of the hydrogel is remarkably improved; mono-substituted capsaicin functional structure monomers containing carboxyl and sulfonic acid groups are used as components, a disubstituted capsaicin functional structure monomer with polyhydroxy and carboxyl is used as a cross-linking agent, the self-crosslinking hydrogel with multiple adsorption sites is successfully constructed through free radical polymerization, and the adsorption capacity and efficiency of the hydrogel are greatly improved. The hydrogel-based carbon material is obtained by carbonizing the self-crosslinking hydrogel containing the capsaicin functional structure, the adsorption performance of the hydrogel material is further improved, the obtained hydrogel-based carbon material can be desorbed and recycled in ethyl alcohol, and the service life of the hydrogel-based carbon material is prolonged. And the problem of secondary pollution of the existing hydrogel material in the acid / alkali desorption process is effectively avoided.

The invention belongs to the technical field of polymer adsorbent materials, and particularly relates to an ionic polymer adsorbent material containing sulfonic groups and triazinyl, a preparation method and application thereof. A sulfonic acid group is introduced to a molecular structure unit of the nitrogen-rich polymer, and the specific surface area and the ion capacity of the polymer are controlled by adjusting the content of benzidine disulfonic acid; along with the increase of the proportion of benzidine disulfonic acid, the ion capacity of an adsorbent is gradually increased, the specific surface area is gradually reduced, the invention also discloses application of the ionic polymer containing sulfonic acid and triazinyl structure in dye adsorption, and the prepared polymer has high specific surface area, heat-resistant stability, adsorption performance and adsorption regeneration performance.

The invention belongs to the technical field of polymer composite materials, and relates to a multilayer solar interface evaporator and a preparation method thereof. The evaporator comprises a photo-thermal layer, a connecting layer and a supporting layer, the photo-thermal layer combines biomass material-carbonized loofah powder with high polymer material polyacrylonitrile, a photo-thermal film with photo-thermal conversion capacity is prepared through the electrostatic spinning technology, and polyaniline grows on the surface of the photo-thermal film in situ so as to improve the photo-thermal efficiency; the connecting layer adopts a loofah sponge fiber skeleton, so that the layers are tightly combined; the supporting layer selects polyamide 6 as a foaming material and bamboo charcoal powder as a functional filler, and the polyamide 6-bamboo charcoal powder foam supporting layer is prepared by utilizing a solution foaming technology and has the functions of heat insulation, water delivery and dye adsorption. The photo-thermal layer and the supporting layer are integrated through the connecting layer to prepare the multi-layer solar interface evaporator, efficient photo-thermal evaporation, high dye adsorption rate and long cycle life are achieved, and the multi-layer solar interface evaporator has the advantages of being environmentally friendly, low in cost and stable in performance and has application prospects in the fields of seawater desalination and industrial wastewater treatment.

The invention belongs to the technical field of methyl red azo dye purification, and discloses a methyl red azo dye adsorbent with good adsorption performance on a methyl red azo dye adsorbent, and a preparation method and application thereof. The preparation method comprises the following steps: (1) preparing a first precursor solution and a second precursor solution; the first precursor solution contains melamine, and the second precursor solution contains cyanuric acid and / or barbituric acid; (2) sequentially adding the first precursor solution and the second precursor solution into biomass carbon powder to form a reaction solution; enabling the supermolecule aggregate to grow in situ and coat the surface of the biomass carbon powder under a stirring condition to form a solid-liquid mixture; removing the solvent in the solid-liquid mixture, and drying to obtain a supramolecular composite precursor; (3) carrying out pressure molding on a mixture of the supramolecular composite precursor, silicate clay mineral and nickel salt to obtain a green body; and (4) carrying out heat treatment on the green body to obtain the methyl red azo dye adsorbent.

The invention discloses a preparation process of ready to dye ready to dye and easy to dye easy to dye hair, and particularly relates to the technical field of hair treatment chemistry, the process is realized through three stages of pretreatment, modification treatment and neutralizing and shaping which are sequentially executed, the hair is immersed in a solution containing an alkaline reagent system and a bioactive peptide structure enhancer, and then the hair is soaked in a solution containing an alkaline reagent system and a bioactive peptide structure enhancer; at a specific temperature, synchronously opening hair cuticles and repairing keratin disulfide bond damage; under the catalysis of a rare earth metal complex catalyst, a permanent cationization three-dimensional network is formed through covalent grafting of an amphiphilic quaternary ammonium salt compound and a keratin nucleophilic site; a neutralizing solution containing an organic acid system and reactive siloxane is adopted to close hair cuticles, an ionic bond anchored hydrophobic protective film is formed, a biological peptide synergistic repair mechanism effectively overcomes keratin damage caused by traditional alkali treatment, and the completeness of the hair cuticles is remarkably improved; a high-density permanent cation site is constructed through rare earth catalytic covalent grafting, so that the dye adsorption strength is improved, and the problem that hair dyeing process damage and durability are difficult to consider at the same time is solved.

A preparation method of a Cu-Co bimetallic semi-crystalline material and its application in dye adsorption belong to the field of nanomaterial and environmental material preparation. The invention comprises the following steps: weighing a Cu salt and a Co salt of the same type in a mass ratio of 1:3 to 3:1, mixing them in an ethanol solution, and ultrasonically promoting dissolution and thorough mixing of the two, which is named solution A; adding an organic ligand into deionized water, and using an auxiliary reagent under ultrasonic conditions to adjust the concentration of the organic ligand to 0.2 mol / L, which is named solution B; mixing solutions A and B in a volume ratio of 1:2, stirring under uniform stirring until the mixture is in a flowable liquid state, which is named substance C; collecting substance C by centrifugation and drying it to obtain a dry Cu-Co bimetallic semi-crystalline material; the preparation method of the Cu-Co bimetallic semi-crystalline material of the invention is simple, rapid, and has low energy consumption; the synthesized Cu-Co bimetallic semi-crystalline material has a multi-element pore structure, a large specific surface area, and multi-element active sites, and has a strong adsorption capacity.

The utility model discloses a dark fiber composite yarn leveling and dyeing device which comprises a workbench, and a dye bin is fixedly installed on the inner wall of the bottom of the workbench. The number of the winding and unwinding assemblies is two, each winding and unwinding assembly comprises shaft sleeves, the shaft sleeves are arranged in a left-right paired mode, and the inner walls of the shaft sleeves are rotationally connected with line rollers; the spraying and dyeing assembly comprises a self-sucking pump and a heater, the output end of the self-sucking pump is connected with a spray head, the spray head faces the yarn sleeve, the dyeing efficiency is remarkably improved through the collaborative design of the heater and the spray head in the device, the heater can accurately heat dye to a proper temperature, and the dyeing efficiency is improved. The dye molecule activity is enhanced, and the dye can permeate yarn sleeve fibers more easily. The nozzle uniformly sprays the heated dye, the contact area of the dye and the yarn sleeve is increased, the dye adsorption process is accelerated, and compared with a traditional dyeing mode, the dyeing time is greatly shortened, the production efficiency is effectively improved, and the large-scale production requirement is met.

The invention relates to the technical field of adsorbents, and discloses a preparation method and application of a sunflower stem pith foam adsorption material.The preparation method comprises the steps that microfibrillated cellulose, quaternized chitosan and sunflower stem pith powder are put into a beaker to be mixed, a cross-linking agent is added, and stirring cross-linking is conducted; and then cryopreserving and thawing to prepare the composite sunflower stem pith foam adsorption material with the dispersed sunflower stem pith powder wrapped by the chitosan. Chitosan is used as a support to support and disperse sunflower stem pith powder, so that sunflower stem pith agglomeration is avoided, and active adsorption sites are increased. The adsorption capacity of the sunflower stem pith foam adsorption material prepared by the method is greatly increased, the adsorption capacity of Congo red is 9 times that of uncompounded sunflower stem pith, the performance is greatly improved, and the sunflower stem pith foam adsorption material can be applied to adsorption of hydrophobic and anionic azo dyes and has a good application prospect. The adsorbent has the advantages of low cost, simplicity in preparation, no chemical pollution, reproducibility, excellent adsorption performance and the like.

The invention discloses a preparation method and application of a metal-organic dye adsorbent based on sulfonyl calixarene, Ni (II) is used as a metal node, and the metal-organic dye adsorbent is prepared through a solvothermal directional assembly strategy by utilizing the synergistic coordination effect of a dicarboxylic acid ligand 4, 4 '-dithiobisbenzoic acid and p-tert-butylsulfonyl calix [4] arene (H4TBSC). The sulfonyl calixarene-based structure metal-organic dye adsorbent with definite inner and outer cavity partitions is successfully constructed. The adsorption material comprises a central large cavity and two symmetrically distributed peripheral cavities, and the special structure enables the adsorption material to show excellent selective adsorption performance on Congo red (CR) dye molecules. And efficient separation of a Congo red / rhodamine B (RhB) mixed system can be realized through a molecular size screening effect. The invention provides a new thought and method for developing a multifunctional supramolecular adsorption material based on dynamic coordination engineering, and has a wide application prospect in the fields of dye separation and wastewater treatment.

The invention discloses a sizing-free dyeing method, colored yarn and colored fabric, and belongs to the field of textile, the method comprises the following steps: cutting colored waste silk fabric into fragments, dissolving the fragments with a dissolving solution containing calcium chloride and ethanol, intercepting silk fibroin molecules, adding a penetrant and poly (diallyldimethylammonium chloride), adjusting the mixture to be alkaline with sodium carbonate, and drying to obtain the sizing-free waste silk fabric. The pure cotton yarn is subjected to padding dyeing, the dyed pure cotton yarn is neutralized, and then the pure cotton yarn is cleaned and dried. According to the method, the dye on the colored waste silk can be used for dyeing the pure cotton yarn, meanwhile, silk fibroin is matched with poly (diallyldimethylammonium chloride) so that fiber hairiness of the pure cotton yarn can be attached, additional sizing is not needed, and the dye is promoted to be adsorbed to the pure cotton yarn; the silk fibroin brings smooth and soft touch feeling similar to that of silk to the pure cotton yarn to a certain extent, so that the fabric woven by the yarn has the characteristics of softness and comfort without desizing treatment.

The present application provides a sunflower leaf dyeing and setting process. The process comprises the steps of: (1) removing petiole and retaining only leaf blade; (2) separating each leaf blade and hanging on a support; (3) adding dye to heated water and stirring to dissolve and obtain dye liquor; (4) after heating the dye liquor, immersing the fixed leaf blade vertically in the dye liquor and continuing to cook for a certain time; (5) removing the dyed leaf blade and cooling and soaking in water; (6) after setting, airing under natural sunlight and carrying out double-sided clip ironing. Each leaf blade is hung on a support, the leaf blades are separated and fully contact with the dye liquor to realize uniform dyeing. High-temperature cooking of sunflower leaf causes the sunflower leaf to swell by absorbing water, and the dye solution penetrates into the sunflower leaf to enhance the brightness of the sunflower leaf and improve the dye adsorption rate. The oil and wax on the surface of the sunflower leaf are separated from the sunflower leaf and float on the liquid surface during high-temperature cooking. Double-sided clip ironing not only can fix the color of the dyed sunflower leaf, but also can set the sunflower leaf to maintain the oil and bright gloss of the sunflower leaf.

The invention provides an azo dye adsorbent preparation method, which comprises: S1, carrying out alkali treatment on a pyrolytic coke raw material to obtain porous pyrolytic coke; s2, introducing inert gas into the organic amine solution to obtain inert gas carrying organic amine; the organic amine comprises at least one of diethanol amine, hydroxyethyl ethylenediamine and diethylenetriamine; and S3, placing the porous pyrolytic coke in a reactor, then introducing inert gas carrying organic amine into the reactor, and carrying out organic amine modification on the porous pyrolytic coke by adopting a low-temperature plasma technology to obtain the azo dye adsorbent. According to the method, the pyrolytic coke is adopted as the raw material, resource utilization of the waste heat pyrolytic coke is achieved while pollution is reduced, the waste heat pyrolytic coke obtains the use value again through recycling and reprocessing, and resource waste is effectively reduced. The azo dye adsorbent obtained by adopting the preparation method disclosed by the invention has an excellent adsorption effect and has a good application prospect in azo dye wastewater treatment.

This invention discloses an aminoindole derivative-based porous polymer, its preparation method, and its application, belonging to the field of dye adsorbent technology. The preparation method is as follows: 2-phenylindole is dissolved in acetic acid, and sodium nitrite aqueous solution is added dropwise. The system is then stirred and reacted at low temperature. After the reaction, the precipitate is collected and dried to obtain product 1. Product 1 is dissolved in ethanol, and NaOH solution is slowly added dropwise while stirring and mixing. Na2S2O4 is added, and the reaction is stirred under heating conditions. After the reaction, the precipitate is collected and dried to obtain product 2. Product 2, 1,2-dichloroethane, and dimethoxymethane are stirred and mixed. A catalyst is added, and the reaction is stirred and reacted under heating conditions. After the reaction, the precipitate is collected, washed, and dried to obtain the final product. The aminoindole derivative-based porous polymer of this application has high specific surface area, high adsorption rate, and high adsorption capacity, effectively solving the problems existing in the prior art.

The application provides a preparation method of a fluorine-free hydrophobic modified W-MEL or W-MFI zeolite molecular sieve membrane for oil-water separation, i.e. an in-situ crystallization method for preparing W-MEL and W-MFI type zeolite molecular sieve membranes. The method first pretreats a carrier with 3-aminopropyl triethoxysilane, then places the carrier in a reaction kettle, and performs high-temperature crystallization in a synthesis liquid to obtain W-MEL and W-MFI zeolite molecular sieve membranes with excellent performance. The research provides a simple synthesis method for novel W-MEL and W-MFI zeolite membrane materials, and innovatively proposes a fluorine-free hydrophobic modification strategy, so that the oil-water mixture can be effectively separated, and the method is applied to dye adsorption. The method provided by the application has strong operability, and has important industrial promotion and practical application value.

To suppress polyene formation in a polarizer made of a polyvinyl alcohol resin film.SOLUTION: A polarizing plate 100 includes a polarizer 101 in which a dichroic dye is adsorbed and aligned on a polyvinyl alcohol-based resin film, and a protective film 103 laminated on at least one surface of the polarizer 101 via an adhesive layer 102. The adhesive layer 102 contains a urea compound. The polarizer 101 contains a radical scavenger. The urea compound is at least one selected from the group consisting of urea, urea derivatives, thiourea, and thiourea derivatives. The radical scavenger is a hindered amine compound.SELECTED DRAWING: Figure 1

The application discloses a new route for purifying regenerated DMT, and the application is characterized in that layered double hydroxide and porous dopamine are used as adsorbents, tannic acid is used as a binder, and the adsorbents are loaded on a cellulose membrane to prepare a filter membrane with a dye adsorption function; meanwhile, an industrial filter membrane is combined to form a multi-layer series filter system, and regenerated DMT is subjected to primary purification; then, the melt crystallization and rectification coupling technology is adopted to perform secondary purification on the regenerated DMT, so that high-purity and high-quality regenerated DMT is formed, the application field of the regenerated DMT is expanded, and a foundation is laid for high-value utilization of downstream regenerated DMT. The application effectively solves the technical problem of the difficulty in purifying the regenerated DMT, and will strongly promote the application and development of the regenerated DMT.

The utility model discloses a dye adsorption device, and relates to the field of dye wastewater treatment, the dye adsorption device comprises a support seat, a filter box is fixed on the support seat, a conveying pipe is fixed on the filter box, a discharge pipe is fixed at one end of the filter box, a valve is mounted on the discharge pipe, a plurality of support frames are arranged in the filter box, and the support frames are fixed on the support seat. A filter plate is fixed on the support frames, a lifting maintenance mechanism is arranged between the plurality of support frames and the filter box, and a stirring mechanism is arranged at one end, close to the conveying pipe, of the filter box. When the filter plates need to be overhauled and replaced, the plurality of supporting frames and the filter plates are lifted by directly utilizing the lifting overhauling mechanism, then the filter plates are overhauled and replaced by workers, and the plurality of filter plates are simultaneously fed into the filter box after being overhauled and replaced. Therefore, the plurality of filter plates can be conveniently taken out from the filter box at the same time, and workers can conveniently overhaul and replace the filter plates.

The application provides a Zn-MOF material and a preparation method and application thereof in Congo red dye adsorption, and relates to the technical field of metal organic framework materials.The preparation method comprises the following steps: 2-methyl imidazole is reacted with 3,6-dichloropyridazine to generate 3,6-bis(2-methyl imidazole) pyridazine in an alkaline solvent environment; and the Zn-MOF material is prepared by mixing and coordinating 3,6-bis(2-methyl imidazole) pyridazine, isophthalic acid and a zinc source.The Zn-MOF material prepared by the application can effectively adsorb Congo red.

The invention discloses an aviation aluminum material pulse anodic oxidation process, the aviation aluminum material pulse anodic oxidation process comprises a pretreatment step, an anodic oxidation step and a hole sealing step, electrolyte used in the anodic oxidation step is sulfuric acid and oxalic acid dihydrate composite electrolyte, the current is forward direct current pulse current, and the hole sealing step is a hole sealing step. The concentration of sulfuric acid in the electrolyte is 130-180 g / L, the concentration of oxalic acid dihydrate is 30-60 g / L, the current density of the forward direct current pulse current is 1.5-2.5 A / dm, and the ratio of current time to current-free time in the period of the pulse current is (3-5): 1. Through the mode, the finally obtained oxidation film layer is uniform and compact in structure, dye adsorption is uniform, firm and stable during dyeing, the hardness and the wear resistance are further improved, and the corrosion resistance and the insulating property are remarkably enhanced.

The invention belongs to the technical field of MOF synthesis and dye adsorption, and particularly relates to an electrochemical synthesis method of iron-based pacs-MOF and application of the iron-based pacs-MOF in organic dye adsorption.The electrochemical synthesis method comprises the following steps that terephthalic acid, 2, 4, 6-tri (4-pyridyl)-1, 3, 5-triazine and tetrabutylammonium bromide are added into a mixed solvent of DMF and ethyl alcohol, acetic acid is added, the mixture is stirred to be uniform, the reaction is carried out, and the iron-based pacs-MOF is obtained. Performing ultrasonic treatment on the obtained mixed raw material; taking an iron sheet as a cathode and an anode, taking the uniformly mixed solution as an electrolyte, fixing the electrodes, and carrying out electrochemical reaction; and after the reaction is finished, centrifuging reaction liquid, removing supernate, adding ethanol into a centrifugal tube, activating, and drying after the activation is finished, so as to obtain a sample. The iron-based pacs-MOF can be applied to methyl red adsorption, and the maximum adsorption capacity is 997 mg / g.

The utility model belongs to the technical field of grinding, polishing and surface fluid coating in operation transportation, and particularly relates to steel pipe painting complete machine equipment which comprises two longitudinal fixed sliding rails, and a first painting box assembly and a second painting box assembly which are arranged between the two longitudinal fixed sliding rails in a spaced mode in the longitudinal direction. The first coloring box assembly and the second coloring box assembly respectively comprise a transverse coloring box between the two fixed sliding rails, a plurality of dye adsorption blocks are arranged on the coloring boxes at intervals in the transverse direction, and the upper surfaces of the dye adsorption blocks are flush and are exposed out of the upper surfaces of the coloring boxes; the dye adsorption blocks of the first painting box assembly and the second painting box assembly are arranged in a staggered manner in the transverse direction; a movable supporting frame assembly is arranged on the two fixed sliding rails in a sliding mode, and the movable supporting frame assembly comprises two movable supporting frames which are arranged on the two fixed sliding rails in a one-to-one mode and symmetrically arranged so that the two ends of the steel pipe can be clamped respectively. The device can avoid the problem that coloring of interval warning paint on the outer surface of the pipe fitting is inconvenient, the process of dyeing and coating the axial interval warning paint on the outer surface of the pipe fitting is automatically completed, and quality and efficiency are improved.

The invention discloses a preparation method of a TAP-BTCA-COF / viscose composite spunlaced non-woven fabric for dye adsorption, which comprises the following steps: taking a viscose spunlaced non-woven fabric as a base fabric, taking 1, 3, 5-tris (4-aminophenyl) benzene and 1, 3, 5-benzenetricarboxaldehyde as organic ligands, and adopting a one-step in-situ solvothermal method to prepare the TAP-BTCA-COF / viscose composite spunlaced non-woven fabric. The TAP-BTCA-COF adhesive composite spunlaced non-woven fabric prepared by the invention can efficiently adsorb organic dyes in printing and dyeing wastewater, has the characteristics of easily available raw materials, simple preparation method, recyclability, cyclic utilization, environmental protection and economy, and has a good application prospect in the field of printing and dyeing wastewater treatment.

The invention is applicable to the technical field of wastewater treatment, and particularly relates to an indium-based MOF (Metal Organic Framework) organic dye adsorbent as well as a preparation method and application thereof, and the indium-based MOF organic dye adsorbent has an open porous anionic frame structure and can be used for efficiently separating mixed dyes. The preparation method comprises the following steps: uniformly mixing In (NO3) 3.4. 5H2O, H4SFT, DMF and HNO3 in an ultrasonic manner, transferring the mixture into a 4mL pressure-resistant glass bottle, and reacting in a drying oven at 120 DEG C for 24 hours; and cooling to room temperature, carrying out ultrasonic treatment, centrifuging, washing, and drying in air to obtain a yellow crystal, namely the indium-based MOF dye adsorbent. The indium-based MOF dye adsorbent can remove about 80% of MB dye molecules within 6 hours, and the saturated adsorption capacity of the indium-based MOF dye adsorbent to MB reaches 49.6 mg / g. Chromatographic column analysis shows that the indium-based MOF dye adsorbent can be used for efficiently separating mixed dyes. The indium-based MOF dye adsorbent prepared by the invention has the advantages of easily available raw materials, mild preparation reaction conditions, safe and simple method and high MB removal efficiency, and can be repeatedly used.

The application discloses an active dye adsorbent and a preparation method thereof, and an environmentally-friendly dyeing method for jean fabric, and belongs to the field of textiles. The preparation method comprises the following steps: dissolving sucrose and sodium periodate in water, adjusting the mixed solution to be acidic, adding a precipitant after reaction, and filtering to obtain a formyl sucrose solution; dissolving chitosan in an acetic acid solution to obtain a chitosan solution; mixing the formyl sucrose solution and the chitosan solution, stirring, and filtering to obtain a solid active dye adsorbent. The adsorbent has good adsorption capacity for active blue 19 in an acidic environment, can elute the active blue 19 in an alkaline environment, and has good reusability, so that the active dye and the adsorbent can be reused, the environmentally-friendly dyeing method for jean fabric is applied, waste water can also have value, waste of the active dye can be reduced, subsequent waste water treatment pressure can be reduced, and waste water treatment cost can be reduced.

The utility model belongs to the technical field of textile printing and dyeing, particularly relates to a dyeing and soaking device with a movable guiding function, and aims to solve the problem that dye drips and is wasted when the existing cloth is soaked with the dye, the dyeing and soaking device comprises a dyeing shell, and the front end of the dyeing shell is connected with a sliding door in a sliding mode. When cloth enters the extrusion shell through the penetrating groove, the connecting plate is elastically pushed through the damping spring, the abutting roller clamps and extrudes the cloth, meanwhile, the situation that the conveying smoothness of the cloth is affected due to excessive extrusion is avoided, the cloth is not prone to falling off, and the cloth is not prone to falling off. During extrusion, the dye flows out to keep the cloth penetrating out of the dyeing shell free of excessive dye, the situation that the environment is polluted or the dye is wasted due to the dripping situation is avoided, meanwhile, the extruded dye is adsorbed to the sponge layer, the cloth can be soaked again before extrusion, and the uniformity of the dye is improved.

The invention discloses polyester knitted dyed cloth and a production method thereof.The polyester knitted dyed cloth adopts special-shaped cross section polyester fibers as raw materials, the cross section of each polyester fiber is of a multi-leaf shape or a hollow structure, and the production method sequentially comprises the following steps of S1, fiber pretreatment and spinning, S2, knitting, S3, pretreatment, S4, multi-stage gradient dyeing and S5, aftertreatment. According to the method, the special-shaped cross-section fiber is adopted and combined with low-temperature plasma treatment, so that a solid foundation is provided for dye adsorption and permeation; a multi-stage gradient dyeing process and a temperature response type slow-release color fixing agent are combined, so that an excellent dyeing effect is obtained; compared with a traditional process, the composite biological refining enzyme agent has the advantages that the energy consumption and the dosage of chemicals are greatly reduced; the temperature response type slow-release color fixing agent realizes accurate and automatic control of pH, avoids waste, reduces chemical load, and is more environment-friendly and energy-saving; functional treatments such as rare earth complexing deepening and anti-ultraviolet finishing are integrated in the final stage of dyeing, so that the subsequent finishing procedure is omitted, the period is shortened, the cost is reduced, and fiber damage is avoided.

The invention discloses a method for promoting reconnection of graphene oxide after dye adsorption through ion regulation and control, which comprises the following steps: step 1, uniformly stirring graphene oxide (GO), and then preparing an ion-doped GO composite material by adopting a dispensing method; 2, shearing or grinding the ion-doped GO composite material obtained in the step 1, and adding the ion-doped GO composite material into a dye solution; and step 3, standing for a period of time, finishing dye adsorption, reconnecting the ion-doped GO composite material which is originally cut into pieces or ground into powder, and keeping stable connection without breaking under a certain ultrasonic condition. According to the invention, material recovery and reutilization are realized, and secondary pollution of an adsorption material to a water body is avoided. The cost is lower, the operation is simple, and large-scale use and popularization are easy.

The invention discloses an adsorption method of Congo red dye, which comprises the following steps: adding bagasse porous carbon as an adsorbent into a Congo red solution, adsorbing for a period of time at constant temperature, and carrying out solid-liquid separation to obtain clear liquid, the bagasse porous carbon is obtained by soaking powdery bagasse in a phosphoric acid solution and a hydrogen peroxide solution, and then performing suction filtration, washing and calcining. The concentration of the phosphoric acid solution is 10-14 mol / L, the concentration of the hydrogen peroxide solution is 6-9 mol / L, and the molar ratio of phosphoric acid to hydrogen peroxide is (8-14): (6-12); the bagasse porous carbon prepared by the method retains oxygen-containing functional groups of a part of biomass raw materials, forms an aromatic structure, has an obvious pore structure, increases the number of pores, and provides more adsorption sites for Congo red. According to the adsorbent, the Congo red adsorption rate of 90% or above can be achieved within 80 minutes through chemical adsorption and monomolecular layer adsorption under optimized operation conditions.

This invention relates to the fields of dye adsorption and decontamination, and water purification technology. It provides a photocatalytic synthesis of porous polySchiff base materials from styrene and their application in dye adsorption. The polySchiff base provided by this invention is produced by dissolving bis(amino) rigid styrene (as shown in Formula 2) in a chloroform solution and subjecting it to a 365nm ultraviolet lamp (60mW / cm²). ‑2 The resulting brown or red solid, obtained by irradiation and filtration, is polySchiff base. The required irradiation time varies depending on the concentration; 10... ‑5 Polymerization at mol / L can be completed in just a few seconds. Three solvents, DMSO, THF, and CHCl3, were screened, and CHCl3 was found to have the highest polymerization rate. Furthermore, the obtained polySchiff base can be degraded in HCl and D / L-CSA acid environments.