10results about How to "Stable degradation" patented technology

The invention discloses a CoFeCuMn LDH nanosheet, a confinement catalytic membrane and a preparation method of the CoFeCuMn LDH nanosheet. The preparation method of the CoFeCuMn LDH nanosheet comprises the steps that A1, cobalt salt, ferric salt, copper salt and manganese salt are dissolved in pure water according to a preset proportion to prepare a first solution, sodium hydroxide is dissolved in pure water to prepare a second solution, and sodium carbonate is dissolved in pure water to prepare a third solution; a2, adding the first solution and the second solution into the third solution, and stirring to obtain a mixed solution; a3, carrying out hydrothermal reaction on the mixed solution; a4, centrifugally washing the product obtained in the step A3 to obtain a precipitate; and A5, the sediment is dried, and the CoFeCuMn LDH nanosheet is obtained. According to the CoFeCuMn LDH nanosheet, the confinement catalytic membrane and the preparation methods of the CoFeCuMn LDH nanosheet and the confinement catalytic membrane, the degradation efficiency and the degradation rate of new pollutants are remarkably improved.

The invention belongs to the technical field of environmental pollution treatment, and particularly relates to a nitrogen-doped carbon nanotube confinement composite material as well as a preparation method and application thereof. Compared with the prior art, the preparation method has the advantages that the cheap nitrogen source and transition metal salt are used as raw materials, the nitrogen-doped carbon nanotube-coated iron carbide confinement material is creatively synthesized in one step by regulating and controlling the cracking temperature, the metal nanoparticles are effectively coated in the carbon nanotubes, and the preparation method is simple to operate and high in yield. The prepared material has the advantages of large specific surface area, rich catalytic active sites, efficient electron transfer capability, strong magnetism, convenience in recovery and the like, so that the nitrogen-doped carbon nanotube confinement composite material can effectively improve the electron transfer capability of the material, reduce the binding energy between the material and persulfate, and improve the catalytic activity of the material. A reaction system mainly activates persulfate through a free radical path to generate sulfate free radicals and hydroxyl free radicals with higher oxidation-reduction potential, so that perfluoro and polyfluoroalkyl substances are effectively degraded.

The invention relates to application of iron-doped carbon nitride rich in nitrogen vacancies, in particular to application of the iron-doped carbon nitride rich in the nitrogen vacancies in degradation of active pharmaceutical compounds based on a degradation system of UV-LED / NaClO and / or UV-LED / NH2Cl. The removal rates of the UV-LED / NaClO / Fe-g-C3N4-Nv degradation system and the UV-LED / NH2Cl / Fe-g-C3N4-Nv degradation system on carbamazepine are as high as 98.3% and 67.2% respectively, the oxidation capacity of g-C3N4 is enhanced through iron doping, a new intermediate energy level is formed through introduction of nitrogen vacancy, the effect of an electron capturer is achieved, a new electron transmission channel is formed under the combined action of iron doping and nitrogen vacancy, and the degradation efficiency of carbamazepine is improved. The migration rate of electrons and the separation efficiency of photon-generated carriers are obviously improved; meanwhile, the Fe-g-C3N4-Nv achieves efficient activation of NaClO and NH2Cl through O2.-and hvb + under UV-LED irradiation, the yield of HO., RCS and RNS in a degradation system is increased, the adaptability to water quality fluctuation is high, and stable degradation of pharmaceutical active compounds can be achieved.

The invention discloses a bacterium capable of efficiently degrading cellulose under a low-temperature condition and application of the bacterium. The low-temperature-resistant cellulose degrading bacterium Paenibacillus sp.JN-1 provided by the invention is preserved in the China Center for Type Culture Collection on July 22, 2024, and the preservation number is CCTCC (China Center for Type Culture Collection) NO: M20241624. The strain can well grow and secrete filter paper enzyme and carboxymethyl cellulose under the conditions of 30 DEG C and 15 DEG C. After the JN-1 strain is cultured for one month under the conditions of 30 DEG C and 15 DEG C, the actual degradation rates of the JN-1 strain to corn straw respectively reach 34.04% and 34.23%, and the strain resource can be provided for straw decomposition efficiency in a low-temperature environment.

This invention relates to the field of microbial technology, disclosing a *Strombus adhesiveus* strain YF2 that degrades polyethylene mulch film, microbial preparations, methods, and applications, addressing the problems of insufficient efficacy and unclear mechanisms in existing PE-degrading strains. This strain is deposited at the Guangdong Provincial Microbial Culture Collection Center, with accession number GDMCC No:67086, and a deposit date of October 13, 2025. Through systematic parallel comparisons, strain YF2 significantly outperformed the control strain in PE degradation efficiency, biofilm formation ability, and induction of PE polymer oxidation. Genomic analysis showed that YF2 contains a genetic network encoding key degrading enzyme systems such as nitroreductase, cytochrome P450, and alkane monooxygenase, and particularly possesses unique nitrification degradation potential. Microbial preparations prepared based on this strain can be used for the bioremediation of PE mulch film residues in farmland soils, compost, and other environments.

The invention discloses a semi-coke wastewater biochemical treatment system and a treatment process thereof, and relates to the technical field of semi-coke wastewater biochemical treatment, the semi-coke wastewater biochemical treatment system comprises a treatment system, the treatment system comprises an oil removal flotation module, an anaerobic module and a multi-stage anaerobic-aerobic module; the oil removal air floatation module comprises an oil separation tank, a buffer tank, an accident tank and an inert air floatation tank, and the oil separation tank, the buffer tank, the accident tank and the inert air floatation tank are connected with one another. Through combination of oil removal flotation, anaerobic treatment and multi-stage anaerobic-aerobic treatment, oil, phenols and other refractory organic matters in the wastewater can be effectively removed, and the biodegradability of the wastewater is remarkably improved. The oxidation problem of phenolic substances is avoided by adopting inert gas floatation, the toxicity of the wastewater is remarkably reduced by the composite anaerobic fluidized bed reactor, finally, organic pollutants are stably degraded by virtue of a multi-stage anaerobic-aerobic process, the concentration of the pollutants can be effectively reduced, the effluent quality is ensured to be stable and reach the standard, and the semi-coke wastewater treatment device is suitable for biochemical treatment of semi-coke wastewater.

The invention discloses a biochar electroactive bacterium complex for enhancing degradation of hydrophobic organic pollutants and a preparation method of the biochar electroactive bacterium complex. The method comprises the following steps: (1) pyrolyzing lignocellulose-based biomass under a high-temperature anaerobic condition to obtain original biochar; (2) under an ice bath condition, mixing the original charcoal, NaNO3, concentrated sulfuric acid and KMnO4, carrying out a first oxidation reaction, and keeping continuous stirring; (3) adding a sulfuric acid solution for a second oxidation reaction of the biochar, and after the temperature is reduced by 60 DEG C, adding an H2O2 solution to terminate the reaction; and (4) cleaning the modified biochar material with a mixed solution of sulfuric acid and H2O2, an HCl solution and deionized water until the pH value is neutral, and finally obtaining the modified biochar material. According to the method, the dual advantages of physical adsorption and biodegradation are combined, and an efficient, green and sustainable solution is provided for removal of hydrophobic organic pollutants in a water body.

The application discloses a piezoelectric fuel cell and application thereof. The electrode of the application comprises a conductive substrate and a catalytic film fixed on the conductive substrate material, and the catalytic film comprises granular tetragonal phase BaTiO3, has good piezoelectric performance, strong active material loading firmness, simple preparation, low cost and other advantages, and can fully utilize mechanical energy and organic wastewater in the environment when used in the fuel cell, so that stable power generation and degradation of organic pollutants are simultaneously realized. Meanwhile, the tetragonal phase BaTiO3 of the catalytic film on the electrode of the application can improve the conductive performance and piezoelectric performance of the electrode by loading SnO2 or doped SnO2, and the electrode loaded with SnO2 or doped with SnO2 also has good piezoelectric performance, strong active material loading firmness, and simultaneously realizes stable power generation and effective degradation of organic pollutants, and is suitable for the fields of environmental protection and energy.

The present invention provides an intensive modular combined aquaculture tailwater treatment system, comprising a sewage collection tank, a physical filtration device, an electrode-suspended filler coupled biofilter treatment unit, and an air pump microporous aeration tank connected in sequence, wherein the sewage collection tank, the physical filtration device, the electrode-suspended filler coupled biofilter treatment unit, and the air pump microporous aeration tank are all connected to a sludge concentration and dehydration device; the suspended filler in the electrode-suspended filler coupled biofilter treatment unit is arranged in the biofilter, the DC positive and negative electrode array combination is arranged at the upper part of the biofilter, the electric stirring device is arranged at the lower part of the biofilter, the bottom of the biofilter is provided with a sludge hopper, the electric stirring device is arranged above the sludge hopper, and the carbon source supplement device is connected to the biofilter through a pipeline. The present invention has the advantages of high denitrification and phosphorus removal efficiency, small footprint, energy saving, low cost, no secondary pollution, and simple management.

The invention belongs to the technical field of underground water treatment, and particularly relates to a ferrous activated persulfate slow-release material as well as a preparation method and application thereof. The ferrous activated persulfate sustained-release material is obtained by alternately bonding ferrous sulfate sustained-release material units and persulfate sustained-release material units in a mass ratio of 1: (1-1.5) along the length direction; wherein the ferrous sulfate slow-release material is formed by mixing and solidifying a first coagulator, ferrous sulfate, citric acid and first sodium carboxymethyl cellulose, and the persulfate slow-release material is formed by mixing and solidifying a second coagulator, sodium persulfate and second sodium carboxymethyl cellulose; the mass ratio of the ferrous sulfate to the citric acid to the sodium persulfate is 1: (0.5-1): (0.15-7.5). Synergistic long-acting release of the activating agents ferrous sulfate and persulfate is achieved by combining a slow release technology, the problems that in the prior art, medicament consumption is too fast, and synchronous activation cannot be achieved are solved, and organic pollutants in underground water can be stably degraded in a long-acting mode.