24results about How to "Increased degradation rate" patented technology

The present application relates to the field of environment-friendly materials and its preparation technology, and particularly relates to a degradable environment-friendly paper cup interior coating and a preparation method thereof. The method comprises the following steps: firstly, synthesizing polymerizable quaternary ammonium salt surfactant (RPKO-X), and then introducing the polymerizable quaternary ammonium salt surfactant and a bio-based polymer solution into a polyacrylate molecular chain by a redox initiation polymerization method, so as to obtain a degradable acrylate emulsion for paper cup interior coating. By introducing the hydrophobic monomer RPKO-X with emulsifier characteristics, a stronger crosslinking network is formed, which can significantly improve the water resistance and oil resistance of the coating. Meanwhile, by introducing the bio-based material polyvinyl alcohol 2688, the environmental friendliness of the coating is enhanced, and the rapid degradation of the coating after use is promoted. By using the redox initiation polymerization system, the method is simple to prepare, can be prepared under mild conditions, and the emulsion particle size is uniform and stable.

This utility model discloses a fluorocarbon-free packaging paper. The utility model includes a paper base layer: a first waterproof layer is disposed on the top of the paper base layer, and a second waterproof layer is disposed on the bottom of the paper base layer. A nylon mesh and a degradation layer are disposed on the top of the first waterproof layer. With this utility model, users can tear the food packaging paper along the creases to expose the nylon mesh inside the food packaging paper. Pulling the nylon mesh then cuts the food packaging paper, thereby destroying the oil-proof layer. This breaks down the overall structure of the paper base layer, the first waterproof layer, the second waterproof layer, the reinforcing layer, and the oil-proof layer, allowing them to fully contact the outside environment and increasing the degradation rate of the food packaging paper. Furthermore, the waterproof adhesive, the first oil-proof adhesive, the second oil-proof adhesive, and the oil-proof layer are disposed on the food packaging paper, preventing the food packaging paper from being soaked in oil or water. The nylon mesh facilitates the separation of the printed layer and the food packaging paper, promoting the degradation of the food packaging paper.

This invention provides a method for preparing Ni3C / Bi5O7I composite material and its application, relating to the field of photocatalysis technology. The preparation method includes: Step 1: Adding KI to a suspension containing Bi(NO3)3·5H2O and NaOH, stirring, and then carrying out a hydrothermal reaction. The resulting product is cooled to room temperature, centrifuged, washed, and dried to obtain Bi5O7I; Step 2: Adding nickel acetate to an oleylamine aqueous solution under a nitrogen atmosphere, carrying out a hydrothermal reaction, cooling to room temperature, and the resulting precipitate is centrifuged, washed, and dried to obtain Ni3C; Step 3: Adding Bi(NO3)3·5H2O solution dropwise to a suspension containing Bi5O7I and Ni3C under vigorous stirring, and then carrying out a hydrothermal reaction. The resulting precipitate is centrifuged, washed, and vacuum dried to obtain Ni3C / Bi5O7I. This invention improves the photocatalytic activity of Bi5O7I by introducing Ni3C into it, and gives the resulting photocatalytic material the ability to efficiently and stably degrade phenol in water, which has potential application value in the field of phenol-containing wastewater purification.

The application discloses an environment-friendly anti-static bubble bag and belongs to the technical field of bubble bags. The bubble bag comprises an upper bag body, a lower bag body and a bag sealing assembly which are matched with each other. The upper bag body and the lower bag body are both made of degradable materials. Bubble film layers are compounded on the outer walls of the upper bag body and the lower bag body. Anti-static coating layers are arranged on the outer surfaces of the upper bag body and the lower bag body. The bag sealing assembly is detachably connected to the butt joint positions of the upper bag body and the lower bag body. The upper bag body and the lower bag body are detachably separated through the detachable bag sealing assembly. The upper bag body and the lower bag body are made of degradable materials. The outer walls of the upper bag body and the lower bag body are compounded with bubble film layers, so that the cushioning and protection performance is considered. The bag body can be disassembled when the articles are taken out through the detachable design of the bag sealing assembly, so that the inner wall of the bubble bag without the anti-static coating layer is fully exposed. The degradable base material can be greatly accelerated in the degradation rate. The packaging protection practicability, the anti-static safety and the whole-cycle environment-friendly adaptability are considered.

The invention belongs to the technical field of polyurethane, and particularly relates to large-aperture biocompatible polyurethane sponge as well as a preparation method and application thereof. The large-aperture biocompatible polyurethane sponge is prepared by soaking a component A and a component B, wherein the component A comprises polyether polyol X, polyether polyol Y, a chain extender, a catalyst, a pore opening agent and a foaming agent; wherein the component B is prepared from modified MDI and liquefied MDI; the polyether polyol X is prepared by taking hydroxy anthraquinone and low-molecular-weight polyether polyol as a composite initiator and epoxypropane as a polymerization monomer; the average functionality of the polyether polyol Y is 3 to 4, and the number-average molecular weight of the polyether polyol Y is 4000 to 7000 g / mol. The large-aperture biocompatibility polyurethane sponge provided by the invention is large in aperture and strong in biocompatibility. The preparation method is simple in process and safe to operate. The prepared polyurethane sponge is used for sewage treatment, and the degradation rate of microorganisms is increased.

This invention relates to a method for tetracycline degradation based on a Cu-CNv heterogeneous Fenton-like catalyst. Using Cu-CNv as the catalyst, this invention utilizes heterogeneous Fenton-like advanced oxidation technology to mineralize and decompose antibiotics adsorbed in the aquatic environment. It exhibits high catalytic efficiency; the Cu-CNv heterojunction achieves a 93.98% degradation rate of 50 mg / L tetracycline-like Fenton within 40 minutes. The method is simple to operate, has good catalyst stability, and does not produce copper sludge. It solves the problems of traditional homogeneous Fenton technology, such as narrow pH range, inability to recover the catalyst, high H2O2 consumption, low catalytic efficiency, and low active sites.

The application provides an electrode material and a preparation method and electrode thereof, wherein the raw materials of the electrode material by weight comprise 45-75% carbon nanotubes, 5-20% cobalt oxide, 5-10% oxide of metal M, 1-5% conductive agent, 1-5% catalyst, 5-10% carrier and 1-5% structure regulator; M is selected from one or more of iron, nickel, copper and zinc; the method comprises: the catalyst is composed of a first part and a second part; step (1), mixing the carbon nanotubes, cobalt oxide, oxide of metal M, conductive agent, carrier, structure regulator and 0-5wt% first part catalyst to obtain a mixture; step (2), sequentially solidifying and calcining the mixture obtained in step (1) to obtain a precursor; step (3), modifying the precursor in step (2) with the second part catalyst to obtain the electrode material; the electrode material prepared by the application has excellent nitrogen pollutant removal effect and long service life.

The utility model discloses a kind of disturbance type sewage treatment equipment based on microbial inoculant processing, it is related to sewage treatment technical field, including processing box, the inoculant delivery assembly is arranged on the upper surface of processing box, the oxygen delivery assembly is arranged on the lower surface of processing box, the stirring assembly is arranged in the inside of processing box;The stirring assembly includes growth frame, the growth frame is arranged in the inside of processing box, a plurality of connecting rods are fixedly connected in the middle of growth frame, the utility model provides a large number of attachment growth surface area for microorganism by setting built-in growth frame's stirring assembly, effectively improve the biomass in reactor, enhance system processing capacity and stability;The design of unique hyperboloid vertical shaft stirring disc is matched with the same direction circular arc disturbance strip, can produce soft and multi-dimensional three-dimensional flow field under the driving of submersible motor.

The invention belongs to the technical field of oil field underground yield and injection increasing equipment, and discloses an all-metal soluble ball seat based on bridge shooting combined fracturing construction and a using method of the all-metal soluble ball seat. An upper cone is in a circular truncated cone shape, a sliding cavity is formed in the upper cone along the center axis, a center pull rod is arranged in the sliding cavity, and the outer conical surface of the upper cone is sleeved with a metal sealing ring; a sealing ring is arranged on the outer side face of the metal sealing ring, a slip is arranged outside the small end of the upper cone and on one side of the metal sealing ring in a sleeved mode, a tailstock is arranged at the end, away from the upper cone, of the slip, one end of the center pull rod is in threaded connection with the tailstock, and the other end of the center pull rod is fixedly connected with a pressing cap capable of abutting against the large end face of the upper cone. A centralizing sliding block is arranged on the portion, located in the sliding cavity, of the center pull rod in a sleeved mode, and the centralizing sliding block is in clearance fit with the sliding cavity. The slip centralizing device has the advantages that the slip centralizing effect is good, meanwhile, the number of parts left in a shaft is small, and rapid degradation can be achieved.

The application discloses a modular microbial fuel cell type artificial wetland system, and relates to the technical field of water pollution control and water treatment. The modular microbial fuel cell type artificial wetland system comprises a water inlet channel, a wetland treatment area and a water outlet channel which are sequentially connected. The wetland treatment area comprises a plurality of treatment units which are arranged in parallel. The water inlet of the treatment unit is connected with the water inlet channel, and the water outlet of the treatment unit is connected with the water outlet channel. Each treatment unit comprises a plurality of microbial fuel cells which are connected in series. The two ends of the microbial fuel cell are respectively provided with a water inlet and a water outlet. The electrode lead-out ends with opposite polarities are arranged on the water inlet side and the water outlet side respectively. The water inlets and the water outlets of adjacent microbial fuel cells are detachably connected. The electrode lead-out ends with opposite polarities of adjacent microbial fuel cells are detachably connected. The application can enhance the organic matter degradation capacity and degradation rate of the wetland system by using the microbial fuel cell, and can ensure the electric energy output of the microbial fuel cell on the basis of solving the clogging problem.

This invention discloses an environmentally friendly antistatic bubble bag, belonging to the field of bubble bag technology. It includes an upper bag body, a lower bag body, and a sealing assembly that cooperate with each other. Both the upper and lower bag bodies are made of biodegradable materials, and both have a bubble film layer laminated to their outer walls. Both the upper and lower bag bodies also have an antistatic coating on their outer surfaces. The sealing assembly is detachably connected to the joint between the upper and lower bag bodies, allowing for easy separation. The combination of biodegradable materials for the upper and lower bag bodies, the bubble film layer on the outer wall providing cushioning and protection, and the detachable design of the sealing assembly allows the bag to be disassembled when the contents are removed, fully exposing the inner wall of the bubble bag without the antistatic coating. This significantly accelerates the degradation rate of the biodegradable substrate, balancing practicality, antistatic safety, and lifecycle environmental adaptability.

This invention relates to highly efficient corn straw-degrading bacteria, specifically the actinomycetes *Streptomyces* sp. GS9, *Streptomyces canus* MD31, *Streptomyces fagopyri* MD55, *Streptomyces cinnabarigriseus* MD63, and a complex bacterial flora. The degrading bacteria or complex bacterial agents obtained through screening in this invention can withstand low and high temperatures and complex acidic and alkaline environments, making them suitable for the complex environment of straw return to the field. They significantly improve the straw degradation rate and increase soil organic matter content.

The invention belongs to the technical field of chemical cleaning, and particularly relates to an environment-friendly efficient cleaning agent for a membrane material based on an environment-degradable material, which comprises a stimuli-responsive cleavable surfactant, a biogenic polycarboxylic acid chelating system, an environment-induced degradation accelerator, a modified biopolymer membrane layer protective agent and a permeation enhancement cofactor, the controlled extinguishing of interfacial activity is realized by utilizing the acid-induced fracture characteristic of an acetal bond of a surfactant, and active induced degradation is realized through a microcapsule packaging oxidation catalysis system; while efficient decontamination and membrane protection are realized, the medicament degradation period is remarkably shortened, and the foam impact of waste liquid on a biochemical system is thoroughly eliminated.

The application discloses an anaerobic system nutrient salt adding method based on AI intelligent control, relates to the technical field of industrial wastewater biological treatment, and comprises the following steps: collecting real-time water quality time sequence data and laboratory biochemical true value data, and constructing a multi-modal input vector; inputting an LSTM-Attention model to generate an anaerobic bacteria specific growth rate prediction value and a dynamic dosing weight coefficient; based on the weight coefficient, a double-loop control strategy is executed, the total dosing amount target is optimized in the outer loop, and the instantaneous dosing flow instruction is calculated in the inner loop; the instruction is sent to adjust the dosing amount, and the true value deviation value is calculated; when the deviation value exceeds the threshold value, sensor calibration and model incremental training update are executed. The application solves the problems of blindness in addition and system instability caused by the mismatch between the long lag of the traditional control mode and the fast fluctuation of the water hydraulic load.

This invention provides the application of *Pseudomonas* and its enzyme preparations in cellulose degradation, relating to the fields of microbial resource utilization and ecological agriculture. The *Pseudomonas* strain AHhStB30 is deposited at the China Center for Type Culture Collection (CCTCC) with accession number CCTCC NO: M 2025628, and the deposit date is March 31, 2025. The *Pseudomonas* strain of this invention is derived from autumn grassland soil and can significantly improve cellulose degradation efficiency under low-temperature conditions. It can efficiently decompose agricultural waste and industrial cellulose waste, accelerate carbon cycling in synergy with the microbial system, maintain high enzyme activity at low temperatures, and reduce pretreatment energy consumption. The *Pseudomonas* strain of this invention has a long-lasting activity retention time and can significantly improve the cellulose degradation rate. Cellulose treated with the *Pseudomonas* strain of this invention or its enzyme preparations degrades more rapidly at low temperatures and exhibits higher activity at low temperatures.

The utility model relates to sewage treatment technical field, and disclose a kind of to realize MBR membrane processing low carbon and intelligent water production device, including biochemical unit and MBR membrane biological reaction tank, water inlet pipe is connected and arranged on biochemical unit, MBR membrane module is provided in MBR membrane biological reaction tank, clean water pool is provided in MBR membrane biological reaction tank side, membrane washing mechanism is provided between MBR membrane biological reaction tank and clean water pool, aeration fan is provided on biochemical unit and MBR membrane biological reaction tank, water is discharged through water production pump between MBR membrane biological reaction tank and clean water pool, for the water filtered in MBR membrane biological reaction tank is discharged into clean water pool, backwash water pump is provided between membrane washing mechanism and MBR membrane biological reaction tank, for the water in clean water pool is discharged into MBR membrane biological reaction tank inside and carries out membrane flushing, water outlet pipe is fixedly connected on clean water pool side, water production device is also provided with PLC controller, the problem that existing equipment needs artificial accurate control has been solved.

The present application belongs to the technical field of groundwater pollution remediation, and particularly relates to a biological remediation composition for remediation of contaminated groundwater, a remediation agent, and a preparation method and application thereof. The biological remediation composition for remediation of contaminated groundwater comprises a composite bacterial flora, a slow-release carrier material, a nutrient slow-release agent, a surfactant, and a stabilizer; the composite bacterial flora is composed of the following bacterial strains: Bacillus subtilis, Pseudomonas putida, Desulfovibrio and Serratia marcescens. The biological remediation composition provided by the present application has high remediation efficiency and improves the removal rate of diesel oil, chlorophenol, and sulfadimethoxine.

This invention relates to a biliary stent material, its preparation method, and its application, belonging to the field of biliary stent technology. A method for preparing a biliary stent material includes the following steps: dissolving 4-(ethylene glycol ketal)-ε-caprolactone and caprolactone copolymer in an organic solvent, then adding barium sulfate to obtain a mixed solution; after the organic solvent in the mixed solution evaporates, a composite casting membrane is obtained; the composite casting membrane is coated onto the surface of a mold, heated, cooled, and the mold is removed to obtain a tubular stent; the tubular stent is immersed in a dopamine hydrochloride buffer solution and stirred to obtain a tubular stent loaded with a polydopamine coating; curcumin is added to an amnion decellularized hydrogel solution to obtain a composite hydrogel solution; the tubular stent loaded with the polydopamine coating is then immersed in the composite hydrogel solution and allowed to gel statically to obtain the biliary stent material. The biliary stent material of this invention has the characteristics of being biodegradable, having good flexibility, and excellent biocompatibility.

This invention discloses a method for enhancing electron transfer in a longitudinal phase-separation anaerobic reactor. This method achieves efficient degradation of various recalcitrant organic wastewaters and efficient biogas recovery in the anaerobic reactor. By longitudinally partitioning the reactor, relative phase separation of the acid-producing and methanogenic stages is achieved. Precise addition of acid-producing and methanogenic phase media materials through phase separation enhances the electron transfer process in the anaerobic treatment, resulting in a faster electron transfer rate, improved stability and pollutant treatment efficiency, shorter reactor start-up time, smaller footprint, easier control, lower cumulative effects of intermediate products such as VFAs, and higher treatment efficiency and energy recovery rate.

This invention provides a metal-organic framework-based heterogeneous Fenton catalyst, its preparation method, and its application. The method includes: adding a tannic acid solution dropwise to a MIL-88A solution, stirring at room temperature, centrifuging, and drying to obtain MIL-88A@TA; and calcining the MIL-88A@TA. The catalyst preparation method provided by this invention uses the environmentally friendly iron-based MOF material MIL-88A as a substrate, and synthesizes a porous metal-organic framework-based heterogeneous Fenton catalyst through tannic acid modification combined with heat treatment. The porous structure and abundant defects of this catalyst enhance the mass transfer between the material and the target analyte and strengthen the interaction between the active sites in the material and H2O2, thereby accelerating the activation rate of H2O2.

The invention relates to a recovery method of hexazinone production wastewater, and belongs to the technical field of waste liquid recovery. According to the recovery method, high-efficiency separation of methanol and high-boiling-point impurities is realized through pressurized rectification and precise temperature control of tower top and tower kettle temperatures in cooperation with high-efficiency stainless steel wire mesh filler; by constructing a ferric oxide-activated carbon catalyst, sodium sulfite and circulating amine salt solution ternary synergistic toxicity breaking system, the efficiency bottleneck of a traditional single reducing agent is broken through, and synergistic interaction is achieved; efficient capture and high-value conversion of ammonia nitrogen are realized through precise stoichiometric control and an electrochemical innovation scheme; and a carbon dioxide saturated aqueous solution with the pH value of 5.3-5.7 is innovatively adopted to replace an organic solvent for adsorption column desorption, so that the desorption efficiency is greatly improved, and the VOCs emission and hazardous waste disposal risks caused by the use of methanol are effectively eliminated. According to the recycling method, the recycling rate and the purity are guaranteed, and meanwhile the recycling rate of substances such as organic amines is increased.

The invention provides an osteochondral repair scaffold based on an extremely small curved surface, and belongs to the field of tissue engineering repair materials, the scaffold comprises a cartilage repair layer and a subchondral bone repair layer which are made of the same material, and the cartilage repair layer and the subchondral bone repair layer are both of an extremely small curved surface bionic porous structure. And the bionic porous structures of the cartilage repair layer and the subchondral bone repair layer are in continuous smooth transition at the junction of the two layers. Furthermore, the pore diameter and the pore wall thickness of the subchondral bone repair layer are gradually changed in a gradient mode in the longitudinal axis direction of the stent. The problems of interface layering, incompatibility of mechanical properties and pore structures and the like of a multi-layer bracket are solved.

This invention belongs to the field of wastewater treatment technology, and particularly relates to a purification process for hydrazine-containing industrial wastewater, comprising the following steps: loading cobalt and copper ions onto mesoporous silica, followed by calcination to obtain composite microparticles; dissolving polyethylene glycol hexadecyl ether in an ethanol solution and reacting it with TEOS and VTMS, then adding acrylic acid and an initiator and mixing to obtain an inner coating solution; dissolving poloxamer in an ethanol solution and reacting it with TEOS and VTMS to obtain an outer coating solution; subjecting the composite microparticles to hydroxylation treatment and dispersing them in the inner coating solution for reaction, extraction, dispersing them in the outer coating solution for reaction, extraction, and obtaining a composite catalyst, which is then used in synergistic treatment with hydrogen peroxide solution to treat hydrazine-containing industrial wastewater. This invention maintains high treatment efficiency even as the concentration of unsymmetrical dimethylhydrazine (UDMH) in the wastewater decreases, effectively reducing the concentration of UDMH in the wastewater within a specified hydraulic retention time to meet effluent requirements.

The invention discloses a preparation method of a bimetallic zeolite imidazate skeleton derived carbon material and a method for degrading sulfathiazole in water by activating peroxymonosulfate, and belongs to the technical field of advanced oxidation catalytic materials and environments. The invention aims to solve the technical problem that the discharged sewage contains toxic sulfathiazole to cause the adverse effect of environmental pollution. The method comprises the following steps: preparing corn straw powder; the preparation method comprises the following steps: pouring corn straw powder, C4H10O6Zn and Co (NO3) 2.6 H2O into methanol, and dispersing; the preparation method comprises the following steps: dispersing 2-methylimidazole in methanol; and heating in a nitrogen atmosphere. The bimetallic zeolite imidazate framework derived composite carbon catalytic material is prepared by adopting a vacuum thermal synthesis method. The material can efficiently activate peroxymonosulfate, mainly generates singlet oxygen non-free radical active species, and accelerates the degradation of a target pollutant sulfathiazole under the assistance of an efficient electron migration pathway and other free radicals. The high-grade oxidation material prepared by the method is used for antibiotic treatment in a water environment.