Enzymatic synthesis process of bio-based water-based resin for textile size

Abstract

The invention provides an enzyme catalytic synthesis process of bio-based water-based resin for textile slurry, and relates to the technical field of water treatment. The enzyme-catalyzed synthesis process of the bio-based water-based resin for the textile size comprises the following steps: S1, based on a plant cellulose raw material, adopting a microwave-assisted pretreatment process, destroying a cellulose crystal structure through 2.45 GHz microwave radiation, taking mesoporous silica as a carrier, and adding a 1% dilute sulfuric acid solution to promote hemicellulose hydrolysis, the microwave activated cellulose slurry is generated. By combining microwave-assisted pretreatment with dilute sulphuric acid hydrolysis, the activation efficiency of cellulose is remarkably improved, by destroying a crystal structure and selectively hydrolyzing hemicellulose, active sites of a subsequent enzyme catalytic reaction are fully exposed, the reaction energy consumption and time are reduced, an immobilized cellulase and laccase concerted catalysis system realizes directional grafting of acrylate monomers, and the specific surface area is increased. The mesoporous silica of the enzyme carrier provides a stable microenvironment, and the catalytic efficiency and the reuse rate are improved.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment, in particular to an enzyme-catalyzed synthesis process of a bio-based water-based resin for textile slurry. Background Art

[0002] The field of water treatment technology primarily involves the purification and resource utilization of industrial wastewater, domestic sewage, and natural water bodies. Its core goal is to reduce pollutant concentrations and achieve water recycling through multi-stage treatment methods, including physical, chemical, and biological methods. This field encompasses key technologies such as membrane separation, electrochemical oxidation, photocatalytic degradation, and bioreactors, and is widely used in water-intensive industries such as petrochemicals, textiles, and printing and dyeing. It focuses particularly on the development of efficient and low-consumption processes, the removal of toxic substances, and the sustainable management of water resources. Specifically, an enzymatic synthesis process for bio-based waterborne resins for textile pulp is an environmentally friendly preparation technology that uses biomass feedstock (such as cellulose and vegetable oils) through enzyme-catalyzed reactions to synthesize waterborne resins. Its purpose is to replace traditional petroleum-based resins in the production of textile pulp.

[0003] Existing cellulose pretreatment techniques often rely on single acid hydrolysis or mechanical pulverization, which consumes a lot of energy and easily damages the cellulose backbone, limiting the efficiency of subsequent enzyme catalysis. Traditional enzyme-catalyzed reactions rely on free enzyme systems, which are prone to enzyme inactivation and difficult to recover, resulting in poor grafting reaction selectivity and increased byproduct production. Membrane separation technologies often use organic membrane materials, which have poor pollution resistance and insufficient retention accuracy, leading to excessive residual monomers in the resin product, impacting the stability of the slurry performance. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides an enzyme-catalyzed synthesis process for a bio-based water-based resin for textile pulp, which solves the problems that the existing technology mostly uses single acid hydrolysis or mechanical crushing for cellulose pretreatment, which has high energy consumption and easily destroys the cellulose main chain structure, resulting in limited subsequent enzyme catalytic efficiency. The traditional enzyme catalytic reaction relies on a free enzyme system, the enzyme is easily inactivated and difficult to recover, the grafting reaction has poor selectivity, and the amount of by-products generated increases.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an enzyme-catalyzed synthesis process of a bio-based water-based resin for textile slurry, comprising the following steps:

[0006] S1: Based on plant cellulose raw materials, a microwave-assisted pretreatment process is used. The cellulose crystal structure is destroyed by 2.45GHz microwave radiation. The carrier is mesoporous silica. At the same time, 1% dilute sulfuric acid solution is added to promote the hydrolysis of hemicellulose to produce microwave-activated cellulose pulp.

[0007] S2: Based on microwave-activated cellulose pulp, a composite enzyme-catalyzed grafting process was used. The acrylate monomer was grafted onto the cellulose backbone using a synergistic catalytic system of immobilized cellulase and laccase at pH 5.0 and 50°C for 4 hours to generate an enzymatic grafted prepolymer.

[0008] S3: Based on enzymatic grafting prepolymer, ceramic membrane ultrafiltration separation process is adopted, and unreacted monomers and small molecular by-products are separated by zirconia ceramic membrane with a molecular weight cut-off of 10kDa. The operating pressure is 0.3MPa and the permeate recovery rate is 60%, producing a high-purity resin concentrate;

[0009] S4: Based on the permeate containing organic matter, an electrochemical oxidation coupling process is adopted, and a titanium-based ruthenium-iridium coated anode / activated carbon fiber cathode is used to generate an electrochemical oxidation reaction at a current density of 15 mA / cm 2 , Under the condition of pH 3.0, electrolytic degradation of acrylate by-products in the permeate was carried out for 2 hours to generate primary degradation wastewater;

[0010] S5: Based on the primary degradation of wastewater, a photocatalytic deep treatment process is adopted, and the residual organic matter is further mineralized by the TiO2 / graphene composite photocatalyst under ultraviolet light with a wavelength of 365nm. The reaction time is 1.5 hours to produce photocatalytically purified water;

[0011] S6: Based on high-purity resin concentrate, a bio-based plasticizer compounding process is adopted. The epoxy soybean oil plasticizer is added at an amount of 8% and evenly dispersed into the resin system through a dynamic shear emulsifier at a speed of 5000 rpm. The temperature is controlled at 40°C to generate a bio-based water-based resin emulsion.

[0012] S7: Based on bio-based water-based resin emulsion and photocatalytically purified water, a circulating water blending process is adopted, and the purified water is reused in the enzyme catalytic reaction system of S2 through an online pH adjustment system to achieve closed-loop circulation of process water and generate finished resin for textile pulp.

[0013] Preferably, the specific steps of generating microwave-activated cellulose pulp based on S1 are:

[0014] S101: Based on plant cellulose raw materials, a microwave radiation pretreatment process is used. The raw materials are irradiated by a 2.45GHz microwave generator to destroy the cellulose crystal structure and generate loose cellulose materials.

[0015] S102: Based on the loosened cellulose material, a dilute acid-assisted hydrolysis process is adopted. By using 1% sulfuric acid solution, a liquid-to-solid ratio of 10:1, and treating at 80°C for 30 minutes, hemicellulose and lignin are selectively hydrolyzed to generate microwave-activated cellulose pulp.

[0016] Preferably, the specific steps of generating the enzymatic grafting prepolymer based on S2 are:

[0017] S201: Based on microwave activation of cellulose pulp, an immobilized enzyme carrier construction process is adopted to load cellulase with mesoporous silica nanoparticles with a pore size of 5nm, and an enzyme activity retention rate of ≥90% to form a composite catalyst to generate an immobilized cellulase catalyst;

[0018] S202: Based on the immobilized cellulase catalyst, an enzymatic grafting reaction process is adopted, through a pH 5.0 buffer system and a constant temperature of 50°C, to catalyze the grafting polymerization of acrylate monomers onto the cellulose backbone for 4 hours to generate an enzymatic grafted prepolymer.

[0019] Preferably, the specific steps of generating a high-purity resin concentrate based on S3 are:

[0020] S301: Based on enzymatic grafted prepolymer, ceramic membrane ultrafiltration separation process is adopted to separate macromolecular resin from small molecular impurities through zirconia ceramic membrane at a pressure of 0.3MPa to produce high-purity resin concentrate;

[0021] S302: Based on the ultrafiltration permeate, an organic pollutant enrichment process is adopted to concentrate unreacted monomers and by-products through a rotary evaporator to generate a permeate containing a high concentration of organic matter.

[0022] Preferably, the specific steps of generating primary degradation wastewater based on S4 are:

[0023] S401: Based on the permeate containing high concentrations of organic matter, an electrochemical oxidation pretreatment process is used to electrolytically degrade BTEX for 2 hours using a titanium-based ruthenium-iridium coated anode / activated carbon fiber cathode to generate primary degradation wastewater;

[0024] S402: Based on the primary degradation wastewater, a pH adjustment process is adopted to adjust the pH value of the wastewater to 3.0 using a sulfuric acid solution, optimize the photocatalytic reaction conditions, and generate acidified pretreated wastewater.

[0025] Preferably, the specific steps of generating photocatalytically purified water based on S5 are:

[0026] S501: Based on the acidification pretreatment wastewater, a photocatalyst loading process is adopted to fix the titanium dioxide / graphene composite on the ceramic honeycomb carrier by the impregnation-calcination method and calcination at 450°C for 2 hours to generate a photocatalytic reaction module;

[0027] S502: Based on the photocatalytic reaction module, the ultraviolet light-driven mineralization process is used. The residual organic matter is completely decomposed by irradiating with a 365nm ultraviolet lamp for 1.5 hours to generate photocatalytic purified water.

[0028] Preferably, the specific steps of generating the bio-based water-based resin emulsion based on S6 are:

[0029] S601: Based on high-purity resin concentrate, using a plasticizer compounding process, epoxy soybean oil is dispersed into the resin system through a high-speed shear emulsifier to generate a plasticized resin emulsion;

[0030] S602: Based on plasticized resin emulsion, a stability enhancement process is adopted to control the rheological properties of the emulsion through polyurethane rheological additives to generate bio-based water-based resin emulsion.

[0031] Preferably, the specific steps of generating the finished resin for textile pulp based on S7 are:

[0032] S701: Based on bio-based water-based resin emulsion and photocatalytic purified water, a circulating water blending process is adopted, and the mixing ratio of purified water and fresh water is adjusted through an online conductivity monitoring system to generate a circulating water system;

[0033] S702: Based on a circulating water system, a closed-loop filling process is adopted to complete the subpackaging of resin products through an aseptic filling line to generate finished resin for textile slurry.

[0034] The present invention provides an enzymatic synthesis process for a bio-based water-based resin for textile slurry. The process has the following beneficial effects:

[0035] The present invention significantly improves the cellulose activation efficiency by combining microwave-assisted pretreatment with dilute sulfuric acid hydrolysis. By destroying the crystal structure and selectively hydrolyzing hemicellulose, the active sites of the subsequent enzymatic catalytic reaction are fully exposed, reducing the reaction energy consumption and time. The immobilized cellulase and laccase synergistic catalytic system achieves directional grafting of acrylate monomers. The mesoporous silica of the enzyme carrier provides a stable microenvironment, improves the catalytic efficiency and reuse rate, increases the grafting rate, and makes the product molecular weight distribution more uniform. The zirconia ceramic membrane ultrafiltration separation process accurately intercepts macromolecular resins, improves the permeate recovery rate, effectively removes unreacted monomers and small molecule by-products, and improves the resin purity to a low monomer residual content. The electrochemical oxidation coupling process of the titanium-based ruthenium iridium anode and the activated carbon fiber cathode specifically degrades acrylate by-products. Combined with acidic conditions and high current density, the removal rate of benzene series is relatively large, which greatly reduces the subsequent processing load. The TiO2 / graphene composite photocatalyst produces strong oxidative free radicals under ultraviolet light excitation, deeply mineralizes difficult-to-degrade organic matter, has a high total organic carbon removal rate, and the effluent index meets national emission standards. Epoxidized soybean oil plasticizer is evenly dispersed in the resin system through high-speed shear emulsification, and combined with temperature control to achieve a balance between emulsion stability and viscosity, thereby increasing the product storage period. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the main steps of the present invention;

[0037] Figure 2 This is a schematic diagram of the refinement of S1 of the present invention;

[0038] Figure 3 This is a schematic diagram of the refinement of S2 of the present invention;

[0039] Figure 4 This is a schematic diagram of the refinement of S3 of the present invention;

[0040] Figure 5 This is a schematic diagram of the refinement of S4 of the present invention;

[0041] Figure 6 This is a schematic diagram of the refinement of S5 of the present invention;

[0042] Figure 7 This is a schematic diagram of the refinement of S6 of the present invention;

[0043] Figure 8 This is a detailed schematic diagram of S7 of the present invention. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] Example:

[0046] like Figure 1-8 As shown, the embodiment of the present invention provides an enzymatic synthesis process of a bio-based water-based resin for textile pulp, comprising the following steps:

[0047] S1: Based on plant cellulose raw materials, a microwave-assisted pretreatment process is used. The cellulose crystal structure is destroyed by 2.45GHz microwave radiation. The carrier is mesoporous silica. At the same time, 1% dilute sulfuric acid solution is added to promote the hydrolysis of hemicellulose to produce microwave-activated cellulose pulp.

[0048] S2: Based on microwave-activated cellulose pulp, a composite enzyme-catalyzed grafting process was used. The acrylate monomer was grafted onto the cellulose backbone using a synergistic catalytic system of immobilized cellulase and laccase at pH 5.0 and 50°C for 4 hours to generate an enzymatic grafted prepolymer.

[0049] S3: Based on enzymatic grafting prepolymer, ceramic membrane ultrafiltration separation process is adopted, and unreacted monomers and small molecular by-products are separated by zirconia ceramic membrane with a molecular weight cut-off of 10kDa. The operating pressure is 0.3MPa and the permeate recovery rate is 60%, producing a high-purity resin concentrate;

[0050] S4: Based on the permeate containing organic matter, an electrochemical oxidation coupling process is adopted, and a titanium-based ruthenium-iridium coated anode / activated carbon fiber cathode is used to generate an electrochemical oxidation reaction at a current density of 15 mA / cm 2 , Under the condition of pH 3.0, electrolytic degradation of acrylate by-products in the permeate was carried out for 2 hours to generate primary degradation wastewater;

[0051] S5: Based on the primary degradation of wastewater, a photocatalytic deep treatment process is adopted, and the residual organic matter is further mineralized by the TiO2 / graphene composite photocatalyst under ultraviolet light with a wavelength of 365nm. The reaction time is 1.5 hours to produce photocatalytically purified water;

[0052] S6: Based on high-purity resin concentrate, a bio-based plasticizer compounding process is adopted. The epoxy soybean oil plasticizer is added at an amount of 8% and evenly dispersed into the resin system through a dynamic shear emulsifier at a speed of 5000 rpm. The temperature is controlled at 40°C to generate a bio-based water-based resin emulsion.

[0053] S7: Based on bio-based water-based resin emulsion and photocatalytically purified water, a circulating water blending process is adopted, and the purified water is reused in the enzyme catalytic reaction system of S2 through an online pH adjustment system to achieve closed-loop circulation of process water and generate finished resin for textile pulp.

[0054] The specific steps for generating microwave-activated cellulose pulp based on S1 are:

[0055] S101: Based on plant cellulose raw materials, a microwave radiation pretreatment process is used. The raw materials are irradiated by a 2.45GHz microwave generator to destroy the cellulose crystal structure and generate loose cellulose materials.

[0056] Based on plant cellulose raw materials (degree of polymerization ≥ 800), a microwave radiation pretreatment process is adopted. The raw materials are irradiated by a 2.45GHz microwave generator (power 800W, time 5 minutes) to depolymerize the cellulose crystal structure, and mesoporous silica (pore diameter 5nm) is used as a microwave absorption carrier to enhance the energy transfer efficiency.

[0057] S102: Based on the loosened cellulose material, a dilute acid-assisted hydrolysis process is adopted. By using 1% sulfuric acid solution, a liquid-to-solid ratio of 10:1, and treating at 80°C for 30 minutes, hemicellulose and lignin are selectively hydrolyzed to generate microwave-activated cellulose pulp.

[0058] Based on the loosened cellulose material, a dilute acid-assisted hydrolysis process was adopted, in which 1% dilute sulfuric acid solution (liquid-to-solid ratio 10:1) was treated at 80°C for 30 minutes to selectively hydrolyze hemicellulose and lignin, while retaining the integrity of the cellulose main chain.

[0059] The specific steps for generating enzymatic grafting prepolymer based on S2 are:

[0060] S201: Based on microwave activation of cellulose pulp, an immobilized enzyme carrier construction process is adopted to load cellulase with mesoporous silica nanoparticles with a pore size of 5nm, and an enzyme activity retention rate of ≥90% to form a composite catalyst to generate an immobilized cellulase catalyst;

[0061] Based on microwave-activated cellulose pulp, an immobilized enzyme carrier construction process was adopted to load cellulase (enzyme activity ≥ 200 U / g) through mesoporous silica nanoparticles (pore size 5 nm), and laccase was immobilized by glutaraldehyde cross-linking method to form a composite catalyst.

[0062] S202: Based on the immobilized cellulase catalyst, an enzymatic grafting reaction process is adopted, through a pH 5.0 buffer system and a constant temperature of 50°C, to catalyze the grafting polymerization of acrylate monomers onto the cellulose backbone for 4 hours to generate an enzymatic grafted prepolymer.

[0063] Based on immobilized cellulase catalyst, an enzymatic grafting reaction process was adopted. In a pH 5.0 phosphate buffer solution, the reaction temperature was controlled at 50°C, and butyl acrylate was used as the monomer for a free radical graft polymerization reaction for 4 hours.

[0064] The specific steps for generating high-purity resin concentrate based on S3 are:

[0065] S301: Based on enzymatic grafted prepolymer, ceramic membrane ultrafiltration separation process is adopted to separate macromolecular resin from small molecular impurities through zirconia ceramic membrane at a pressure of 0.3MPa to produce high-purity resin concentrate;

[0066] Based on enzymatic grafted prepolymer, the zirconia ceramic membrane ultrafiltration process is adopted to separate macromolecular resin from small molecular impurities (such as unreacted monomers and oligomers) through a ceramic membrane with a molecular weight cutoff of 10kDa at an operating pressure of 0.3MPa.

[0067] S302: Based on the ultrafiltration permeate, an organic pollutant enrichment process is adopted to concentrate unreacted monomers and by-products through a rotary evaporator to generate a permeate containing a high concentration of organic matter.

[0068] Based on the ultrafiltration permeate, the rotary evaporation concentration process was used to concentrate the permeate at 50°C and vacuum degree -0.08MPa to enrich the organic pollutants.

[0069] The specific steps for generating primary degradation wastewater based on S4 are:

[0070] S401: Based on the permeate containing high concentrations of organic matter, an electrochemical oxidation pretreatment process is used to electrolytically degrade BTEX for 2 hours using a titanium-based ruthenium-iridium coated anode / activated carbon fiber cathode to generate primary degradation wastewater;

[0071] Based on the permeate containing high concentration of organic matter, a titanium-based ruthenium-iridium coated anode / activated carbon fiber cathode was used at a current density of 15 mA / cm 2 , pH 3.0, and degraded benzene series (such as styrene and methyl acrylate) by electrochemical oxidation.

[0072] S402: Based on the primary degradation wastewater, a pH adjustment process is adopted to adjust the pH value of the wastewater to 3.0 using a sulfuric acid solution, optimize the photocatalytic reaction conditions, and generate acidified pretreated wastewater.

[0073] Based on the primary degradation wastewater, sulfuric acid adjustment process was used to stabilize the pH value to 3.0, and Fe 2+ (50 mg / L) as a Fenton reaction catalyst.

[0074] The specific steps for generating photocatalytically purified water based on S5 are:

[0075] S501: Based on the acidification pretreatment wastewater, a photocatalyst loading process is adopted to fix the titanium dioxide / graphene composite on the ceramic honeycomb carrier by the impregnation-calcination method and calcination at 450°C for 2 hours to generate a photocatalytic reaction module;

[0076] Based on the acidification pretreatment wastewater, the TiO2 / graphene composite (graphene content 5%) was loaded on a ceramic honeycomb carrier (pore size 2 mm) by the impregnation-calcination method and calcined at 450°C for 2 hours to form a stable coating.

[0077] S502: Based on the photocatalytic reaction module, the ultraviolet light-driven mineralization process is used. The residual organic matter is completely decomposed by irradiating with a 365nm ultraviolet lamp for 1.5 hours to generate photocatalytic purified water.

[0078] Based on the photocatalytic reaction module, a 365nm ultraviolet lamp (power 30W) was used for 1.5 hours to excite the photocatalyst to produce hydroxyl radicals (·OH), which completely mineralized the residual organic matter.

[0079] The specific steps for generating bio-based waterborne resin emulsion based on S6 are:

[0080] S601: Based on high-purity resin concentrate, using a plasticizer compounding process, epoxy soybean oil is dispersed into the resin system through a high-speed shear emulsifier to generate a plasticized resin emulsion;

[0081] Based on the high-purity resin concentrate, epoxidized soybean oil (8% addition) was dispersed into the resin system using a dynamic shear emulsifier (speed 5000 rpm), and the temperature was controlled at 40° C. to prevent the emulsion from breaking.

[0082] S602: Based on plasticized resin emulsion, a stability enhancement process is adopted to control the rheological properties of the emulsion through polyurethane rheological additives to generate bio-based water-based resin emulsion.

[0083] Based on the plasticized resin emulsion, a polyurethane rheological additive (added in an amount of 0.5%) was used to adjust the rheological properties of the emulsion, and the stability was improved by constant temperature aging (standing at 25°C for 24 hours).

[0084] The specific steps for producing finished resin for textile pulp based on S7 are:

[0085] S701: Based on bio-based water-based resin emulsion and photocatalytic purified water, a circulating water blending process is adopted, and the mixing ratio of purified water and fresh water is adjusted through an online conductivity monitoring system to generate a circulating water system;

[0086] Based on bio-based water-based resin emulsion and photocatalytically purified water, an online conductivity monitoring system is used to adjust the mixing ratio of purified water and fresh water in real time (reuse rate ≥ 90%) to maintain the conductivity of the reaction system ≤ 100μS / cm.

[0087] S702: Based on a circulating water system, a closed-loop filling process is adopted to complete the subpackaging of resin products through an aseptic filling line to generate finished resin for textile slurry.

[0088] Based on a circulating water system, an aseptic filling line (ISO 5 cleanliness level) is used to complete the packaging of resin products, and nitrogen protection is used to prevent emulsion oxidation.

[0089] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An enzyme-catalyzed synthesis process for a bio-based water-based resin for textile pulp, characterized in that: The following steps are involved: S1: Based on plant cellulose raw materials, a microwave-assisted pretreatment process is used. The cellulose crystal structure is destroyed by 2.45GHz microwave radiation. The carrier is mesoporous silica. At the same time, 1% dilute sulfuric acid solution is added to promote the hydrolysis of hemicellulose to produce microwave-activated cellulose pulp. S2: Based on microwave-activated cellulose pulp, a composite enzyme-catalyzed grafting process was used. The acrylate monomer was grafted onto the cellulose backbone using a synergistic catalytic system of immobilized cellulase and laccase at pH 5.0 and 50°C for 4 hours to generate an enzymatic grafted prepolymer. S3: Based on enzymatic grafting prepolymer, ceramic membrane ultrafiltration separation process is adopted, and unreacted monomers and small molecular by-products are separated by zirconia ceramic membrane with a molecular weight cut-off of 10kDa. The operating pressure is 0.3MPa and the permeate recovery rate is 60%, producing a high-purity resin concentrate; S4: Based on the permeate containing organic matter, an electrochemical oxidation coupling process is adopted, and a titanium-based ruthenium-iridium coated anode / activated carbon fiber cathode is used to generate an electrochemical oxidation reaction at a current density of 15 mA / cm 2 , Under the condition of pH 3.0, electrolytic degradation of acrylate by-products in the permeate was carried out for 2 hours to generate primary degradation wastewater; S5: Based on the primary degradation of wastewater, a photocatalytic deep treatment process is adopted, and the residual organic matter is further mineralized by the TiO2 / graphene composite photocatalyst under ultraviolet light with a wavelength of 365nm. The reaction time is 1.5 hours to produce photocatalytically purified water; S6: Based on high-purity resin concentrate, a bio-based plasticizer compounding process is adopted. The epoxy soybean oil plasticizer is added at an amount of 8% and evenly dispersed into the resin system through a dynamic shear emulsifier at a speed of 5000 rpm. The temperature is controlled at 40°C to generate a bio-based water-based resin emulsion. S7: Based on bio-based water-based resin emulsion and photocatalytically purified water, a circulating water blending process is adopted, and the purified water is reused in the enzyme catalytic reaction system of S2 through an online pH adjustment system to achieve closed-loop circulation of process water and generate finished resin for textile pulp.

2. The enzymatic synthesis process of a bio-based water-based resin for textile pulp according to claim 1, characterized in that: The specific steps for generating microwave-activated cellulose pulp based on S1 are: S101: Based on plant cellulose raw materials, a microwave radiation pretreatment process is used. The raw materials are irradiated by a 2.45GHz microwave generator to destroy the cellulose crystal structure and generate loose cellulose materials. S102: Based on the loosened cellulose material, a dilute acid-assisted hydrolysis process is adopted. By using 1% sulfuric acid solution, a liquid-to-solid ratio of 10:1, and treating at 80°C for 30 minutes, hemicellulose and lignin are selectively hydrolyzed to generate microwave-activated cellulose pulp.

3. The enzymatic synthesis process of a bio-based water-based resin for textile pulp according to claim 1, characterized in that: The specific steps for generating enzymatic grafting prepolymer based on S2 are: S201: Based on microwave activation of cellulose pulp, an immobilized enzyme carrier construction process is adopted to load cellulase with mesoporous silica nanoparticles with a pore size of 5nm, and an enzyme activity retention rate of ≥90% to form a composite catalyst to generate an immobilized cellulase catalyst; S202: Based on the immobilized cellulase catalyst, an enzymatic grafting reaction process is adopted, through a pH 5.0 buffer system and a constant temperature of 50°C, to catalyze the grafting polymerization of acrylate monomers onto the cellulose backbone for 4 hours to generate an enzymatic grafted prepolymer.

4. The enzymatic synthesis process of a bio-based water-based resin for textile pulp according to claim 1, characterized in that: The specific steps for generating high-purity resin concentrate based on S3 are: S301: Based on enzymatic grafted prepolymer, ceramic membrane ultrafiltration separation process is adopted to separate macromolecular resin from small molecular impurities through zirconia ceramic membrane at a pressure of 0.3MPa to produce high-purity resin concentrate; S302: Based on the ultrafiltration permeate, an organic pollutant enrichment process is adopted to concentrate unreacted monomers and by-products through a rotary evaporator to generate a permeate containing a high concentration of organic matter.

5. The enzymatic synthesis process of a bio-based water-based resin for textile pulp according to claim 1, characterized in that: The specific steps for generating primary degradation wastewater based on S4 are: S401: Based on the permeate containing high concentrations of organic matter, an electrochemical oxidation pretreatment process is used to electrolytically degrade BTEX for 2 hours using a titanium-based ruthenium-iridium coated anode / activated carbon fiber cathode to generate primary degradation wastewater; S402: Based on the primary degradation wastewater, a pH adjustment process is adopted to adjust the pH value of the wastewater to 3.0 using a sulfuric acid solution, optimize the photocatalytic reaction conditions, and generate acidified pretreated wastewater.

6. The process for enzymatically synthesizing a bio-based waterborne resin for textile pulp according to claim 1, characterized in that Based on: The specific steps of generating photocatalytic purified water based on S5 are: S501: Based on the acidification pretreatment wastewater, a photocatalyst loading process is adopted to fix the titanium dioxide / graphene composite on the ceramic honeycomb carrier by the impregnation-calcination method and calcination at 450°C for 2 hours to generate a photocatalytic reaction module; S502: Based on the photocatalytic reaction module, the ultraviolet light-driven mineralization process is used. The residual organic matter is completely decomposed by irradiating with a 365nm ultraviolet lamp for 1.5 hours to generate photocatalytic purified water.

7. An enzyme-catalyzed synthesis process of a bio-based water-based resin for textile pulp, characterized in that The following steps are involved: The specific steps for generating bio-based waterborne resin emulsion based on S6 are: S601: Based on high-purity resin concentrate, using a plasticizer compounding process, epoxy soybean oil is dispersed into the resin system through a high-speed shear emulsifier to generate a plasticized resin emulsion; S602: Based on plasticized resin emulsion, a stability enhancement process is adopted to control the rheological properties of the emulsion through polyurethane rheological additives to generate bio-based water-based resin emulsion.

8. An enzyme-catalyzed synthesis process of a bio-based water-based resin for textile pulp, characterized in that The following steps are involved: The specific steps for producing finished resin for textile pulp based on S7 are: S701: Based on bio-based water-based resin emulsion and photocatalytic purified water, a circulating water blending process is adopted, and the mixing ratio of purified water and fresh water is adjusted through an online conductivity monitoring system to generate a circulating water system; S702: Based on a circulating water system, a closed-loop filling process is adopted to complete the subpackaging of resin products through an aseptic filling line to generate finished resin for textile slurry.

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