281 results about "Activated persulfate" patented technology

The invention discloses preparation of a two-component biochar composite material and application of the two-component biochar composite material to removal of antibiotics in wastewater by activating persulfate, and relates to a preparation method of the two-component biochar composite material. The invention aims to solve the problems that the existing biochar material has few surface active sites and limited catalytic ability to antibiotics in wastewater. The method comprises the following steps: 1, shearing, crushing, washing and drying a biomass material, and sieving after drying to obtain fine biomass material powder; 2, mixing and grinding the fine biomass material powder, metal salt and a pore-forming agent; and 3, placing the mixture in a tubular furnace, and carrying out pyrolysis in an inert atmosphere to obtain the bi-component biochar composite material. The bi-component biochar is synthesized through one-step pyrolysis, the preparation method is simple, operability is high, and the biochar is used for activating persulfate to remove antibiotics in wastewater.

The invention discloses a preparation method and application of a high-valence nickel monatomic catalyst, through the synergistic effect of nickel-phenanthroline complexing and inert template anchoring, dense and stable anchoring sites are provided for nickel atoms, atom migration and agglomeration in the high-temperature pyrolysis process are effectively inhibited, and the high-valence nickel monatomic catalyst is prepared. Meanwhile, by combining with an air-inert atmosphere two-step calcination procedure, air pre-oxidation is carried out, and a nickel precursor is stabilized in a carrier framework to prevent the nickel precursor from being reduced into a metal state in subsequent high-temperature inert calcination, so that the nickel precursor is locked in an electron-deficient high valence state, and a nickel-loaded material with the nickel loading capacity of 2.9-9.2 wt% and the nickel loading capacity of 9.2-9.2 wt% is prepared. And the nickel element stably exists mainly in the form of Ni < 3 + > or a higher-valence monatomic form, so that the three-in-one breakthrough of high load, high valence and high stability is realized. When the obtained catalyst activates persulfate, high-valence metal oxygen species are preferentially generated, various new pollutants are degraded, and the catalyst has high activity, selectivity and high stability.

The invention discloses a spinel and aluminosilicate composite Fenton-like catalyst derived from iron tailings as well as a preparation method and application of the spinel and aluminosilicate composite Fenton-like catalyst. Solid waste iron tailings are used as raw materials, a powdery spinel and aluminosilicate composite material is prepared through an improved sol-gel-calcination technology, then the powdery spinel and aluminosilicate composite material, biochar and water glass are mixed, molded and calcined, and the granular composite catalyst is prepared. The method is simple and convenient to operate and low in cost, and has industrial preparation feasibility. The prepared catalyst can efficiently activate oxidizing agents such as persulfate and hydrogen peroxide to generate active oxygen species, and organic pollutants in mineralized water can be rapidly degraded. The method is characterized in that the catalyst is prepared from iron tailings in a high-valued manner, the specific surface area of the material, the generation efficiency of active species and the cycling stability are remarkably improved through structure optimization, the problems that a traditional catalyst is high in cost, poor in industrial adaptability and the like are solved, and an economical and environment-friendly new thought is provided for large-scale treatment of organic pollution through an advanced oxidation technology; the method has double benefits of tailing recycling and environmental pollution treatment.

The invention belongs to the field of water pollution treatment, and particularly relates to a method for degrading chlorophenol organic pollutants in water by activating persulfate with a cobalt-cerium dioxide monatomic catalyst in the presence of bicarbonate radicals. According to the invention, cerium nitrate hexahydrate is calcined in a muffle furnace to obtain cerium dioxide. A catalyst precursor is prepared by a traditional isovolumetric impregnation method. The prepared catalyst precursor is annealed at different temperatures to obtain a series of catalysts, the catalytic performance of Co1-CeO2-700 is optimal, and the Co1-CeO2-700 has more excellent catalytic performance in the presence of bicarbonate radicals. The preparation method provided by the invention has the advantages of simple steps, convenience in operation, quick effect of treating chlorophenol, high product yield and low cost, and has good economic value and social benefit. The prepared monatomic catalyst has the advantages of being high in atom utilization rate, good in stability, excellent in catalytic effect and the like, and is expected to become a key technology for solving actual water environment organic pollution.

The invention relates to an organic combined polluted underground water in-situ remediation method based on a micro-nano iron-based material. The method comprises the following steps: acquiring underground water pollution information; establishing a composite reaction zone at a preset position, and constructing a reduction-oxidation chain reaction system; and operating the composite reaction zone, collecting monitoring data, and optimizing the composite reaction zone until the composite pollution is degraded and removed to a preset value. Through series reaction of powerful reduction of the micro-nano iron-based material and advanced oxidation of the iron-based activated persulfate, the performance of the micro-nano iron-based material serving as a strong reduction material and an active agent is fully played, pollutants such as halogenated hydrocarbon in underground water are sequentially subjected to reduction degradation, pollutants such as benzene series and volatile phenol are sequentially subjected to oxidative degradation, and the pollution to the underground water is reduced. Effective management and control of underground water combined pollution of medical and chemical parks and enterprises are realized; a monitoring well is configured based on a composite reaction zone, and remediation materials are discontinuously added in combination with management and control conditions, or other management and control materials are flexibly selected, so that long-term management and control of groundwater pollution risks are realized.

The invention discloses a composite membrane with adsorption separation and catalytic degradation functions as well as a preparation method and application of the composite membrane. The composite membrane is supported by a porous base membrane, a polyamide separation layer formed by reaction of a 3, 4-dihydroxyphenylethylamine and 2, 3-diaminophenol comonomer and acyl chloride is constructed on the surface of the porous base membrane through interfacial polymerization, and FeCo-g-C3N4 nanosheets are anchored in situ; the membrane can efficiently activate peroxymonosulfate (PMS) to generate free radicals under the nearly neutral condition, efficient interception and catalytic degradation of organic pollutants (such as antibiotics) are synchronously achieved, and heavy metal ions (such as Pb < 2 + > and Cd < 2 + >) are adsorbed through a functional monomer structure; the invention provides an interfacial polymerization preparation method of the membrane. The composite membrane breaks through the limitation of'only interception but not degradation 'of a traditional membrane, realizes integration of'separation-adsorption-degradation', can remarkably reduce the volume of concentrated water and reduce the toxicity of the concentrated water, and is suitable for advanced treatment of wastewater containing composite pollutants in the industries of pharmacy, printing and dyeing and the like.

The present invention discloses a sulfur-nitrogen co-doped graphene hollow nanosphere and its preparation and application, belonging to the technical field of graphene nanomaterials. During the preparation, a mixture of thiourea and zinc powder is first calcined under the protection of an inert gas, and then H2O and HCl are added to the calcined product and heated for reaction, followed by post-processing to obtain the target product. The resulting product is a sulfur-nitrogen co-doped graphene material, which presents a hollow spherical morphology. This material has a large specific surface area and pore volume, and both the nitrogen and sulfur doping amounts have reached a high level. It has been verified that the obtained high-sulfur-nitrogen co-doped graphene hollow nanospheres have unique graphite nitrogen-pyridine nitrogen-thiophene sulfur synergistic active sites, which have high atomic utilization and high stability, and exhibit the best performance of activating persulfate to degrade organic matter. It can continuously and rapidly separate organic pollutants in actual water bodies and exhibit excellent stability.

The invention provides preparation of an S / N co-doped modified biochar composite material and application of the S / N co-doped modified biochar composite material in activated persulfate resource degradation and removal of antibiotics, belongs to the technical field of wastewater treatment, and aims to efficiently degrade and remove antibiotics in wastewater and avoid environmental risks of a metal catalyst at the same time. The method is a green, environment-friendly, economical and efficient water treatment method; the preparation method comprises the following specific steps: S1, mixing and grinding waste crop biomass and metal salt to prepare modified biochar; s2, mixing and grinding the modified charcoal and a sulfur-containing compound; s3, performing high-temperature pyrolysis on the ground mixture to obtain an S / N co-doped modified charcoal composite material, and using the S / N co-doped modified charcoal composite material as a persulfate catalyst to effectively degrade and remove tetracycline in polluted wastewater; the S / N co-doped modified biochar composite material prepared by the invention effectively solves the problem of secondary utilization of waste crops, mainly improves the degradation and removal efficiency of tetracycline and realizes resource conversion of tetracycline.

The invention relates to a wastewater treatment method, in particular to a capacitive deionization-oxidation coupling high-salt industrial wastewater treatment process, which comprises the following steps: firstly, carrying out micro-filtration to remove suspended matters and adjust the pH value, then carrying out low-voltage electro-adsorption desalination through a modified capacitive deionization unit, collecting electric energy released in a regeneration stage, converting the electric energy into electric energy of a catalytic oxidation unit through a converter, and carrying out high-salt industrial wastewater treatment. Desalted water enters a non-free radical catalytic oxidation unit, a UV-LED excitation catalyst activates persulfate, singlet oxygen is generated to degrade organic matter, an intelligent control system dynamically adjusts voltage, medicament and energy distribution according to the water inlet condition, finally, capacitive deionization regeneration liquid is subjected to multi-stage membrane concentration and crystallization, salt products are recycled, and waste water treatment and recycling are achieved.

The invention discloses an algae-based iron-carbon catalyst as well as a preparation method and application thereof, and relates to the technical field of new material research and development and sewage treatment. The preparation method comprises the following steps: mixing ferrocene, diatomite and a solvent to obtain a mixed solution; adding a hydrogen peroxide solution into the mixed solution, and then heating for reaction to obtain an intermediate; and roasting the intermediate to obtain the algae-based iron-carbon catalyst. According to the invention, ferrocene and diatomite are used as raw materials, and the high-performance algae-based iron-carbon catalyst is prepared through simple solvothermal reaction and roasting treatment. The obtained algae-based iron-carbon catalyst is stable in structure, high in activity and wide in applicable pH range in a persulfate oxidation system, and can be used for activating persulfate to degrade antibiotic pollutants in water.

The invention discloses a cobalt-based catalytic material for efficiently activating persulfate to degrade antibiotics and a preparation method of the cobalt-based catalytic material. The catalytic material is prepared by taking an H-Beta zeolite molecular sieve as a carrier, loading cobalt ions on the molecular sieve through an impregnation method and then carrying out high-temperature roasting treatment. The preparation method comprises the following steps: preparing a cobalt acetate tetrahydrate solution, adding an H-Beta zeolite molecular sieve into the solution to carry out ion exchange, and then carrying out drying and high-temperature roasting. The prepared catalytic material has highly dispersed cobalt active sites and excellent structural stability and catalytic activity. Compared with the prior art, the catalyst provided by the invention has the advantages of simple preparation process, lower cost, high catalytic efficiency, good stability, low cobalt ion dissolution rate, easiness in recovery and reuse and the like, and has a good practical application prospect.

The invention belongs to the technical field of antibiotic pollutant degradation, and discloses a method for degrading antibiotic pollutants by using boron-carbon co-regulated nanoscale zero-valent iron as an activating agent, which comprises the following steps: step 1, synthesizing carbon-coated nanoscale zero-valent iron, marked as Fe0-C, through a hydrothermal method and a carbothermic method; and step 2, mixing the Fe < 0 >-C obtained in the step 1 with crystal boron, adding the mixture into sewage containing antibiotic pollutants, and then adding persulfate as an oxidizing agent to degrade the antibiotic pollutants. A boron-carbon co-regulation method is adopted to realize the passivation resistance of the nano zero-valent iron in the whole process from preparation, storage to application, and the nano zero-valent iron is applied to the process of activating persulfate to degrade tetracycline.

The invention provides a ZIF-67 (at) Co / HPLFM composite material and a preparation method and application of the ZIF-67 (at) Co / HPLFM composite material, and the preparation method comprises the following steps: providing a hollow porous straw lignin fiber membrane (HPLFM); cobalt salt is dissolved in absolute ethyl alcohol, the hollow porous straw lignin fiber membrane is taken and placed in the mixed solution, absolute ethyl alcohol dissolved with 2-methylimidazole is dropwise added into the mixed solution after oscillation, and oscillation continues for a period of time; taking out the hollow porous straw lignin fiber membrane, washing, and freeze-drying to obtain a precursor material; and carrying out high-temperature calcination on the precursor material to obtain the ZIF-67 (at) Co / HPLFM composite material. The high surface activity and the porous hollow structure of the hollow porous straw lignin fiber membrane are utilized, ZIF-67 is loaded on HPLFM, the ZIF-67-coated Co / HPLFM composite material is obtained through further treatment, and the material has high specific surface area and excellent adsorption performance and has good application prospects in organic pollutant degradation by activating peroxymonosulfate.

The invention discloses an iron atom loaded molybdenum disulfide catalyst and a preparation method and application thereof, and the preparation method of the catalyst comprises the following steps: preparing molybdenum disulfide nano flower balls, dispersing the molybdenum disulfide nano flower balls in water, adding a ferric salt and a reducing agent, and carrying out a hydrothermal reaction to obtain the iron atom loaded molybdenum disulfide catalyst. In the preparation method, under the combined action of the 1T-phase molybdenum disulfide, the ferric iron and the reducing agent, the iron atom loaded molybdenum disulfide catalyst with many reaction active sites, good stability and high catalytic activity can be prepared, and when the iron atom loaded molybdenum disulfide catalyst is used for activating persulfate, efficient activation of persulfate can be achieved; furthermore, a large amount of. SO4 <-> and singlet oxygen can be rapidly generated by utilizing the persulfate to realize efficient degradation of organic pollutants. Meanwhile, the preparation method disclosed by the invention also has the advantages of simple process, high preparation efficiency, easily controlled preparation conditions, safe preparation process and the like, is suitable for large-scale preparation and is convenient for industrial application.

The invention discloses a method for removing grease in neodymium-iron-boron oil sludge waste by self-activated persulfate, which comprises the following specific steps: adding neodymium-iron-boron oil sludge waste into a stirring device, adjusting the concentration, pH value and temperature of slurry, then adding persulfate into the slurry, stirring for a certain time, and then dehydrating to obtain a qualified neodymium-iron-boron product. According to the method, hydroxyl free radicals and sulfate free radicals are generated through neodymium iron boron self-activation persulfate, grease substances in the neodymium iron boron oil sludge waste can be degraded into CO2 and H2O, rapid analysis of the grease substances from the surfaces of neodymium iron boron particles is achieved, and efficient deoiling can be achieved after solid-liquid separation. The method has the characteristics of simplicity in operation, high deoiling efficiency and wide application range.

The invention belongs to the technical field of wastewater treatment and energy recovery, and particularly relates to a self-driven electro-catalysis system for activating persulfate to degrade antibiotics and application of the self-driven electro-catalysis system. The invention provides a self-driven electro-catalysis system for activating persulfate to degrade antibiotics. The self-driven electro-catalysis system comprises a reaction unit, an electrolyte and an external circuit wire, the reaction unit comprises a cobalt sheet anode and a carbon rod cathode; the external circuit lead is used for connecting the cobalt sheet anode and the carbon rod cathode; and an electrolyte in the electrolyte solution comprises Na2SO4. According to the self-driven electro-catalysis system, in a wastewater solution containing antibiotics, persulfate and supporting electrolyte, an external power source is not needed, spontaneous electron transmission is formed through the potential difference of the cobalt sheet anode and the carbon rod cathode, and self-driven PMS activation and antibiotic pollutant degradation are achieved.

The application discloses a method for treating organic pollutant wastewater by using manganese monoxide-graphite diacetylene nano-confined catalytic material to activate persulfate, the method is to degrade and treat organic pollutant wastewater by using manganese monoxide-graphite diacetylene nano-confined catalytic material as a catalyst for activating persulfate, and the nano-confined catalytic material comprises graphite diacetylene nanosheets, and manganese monoxide nanoparticles are confined between the layered structures of the graphite diacetylene nanosheets.The method has the advantages of rich active sites, fast electron transfer and stable structure, so that the catalytic degradation system is not only high in efficiency, but also strong in adaptability, and shows good degradation effect on various organic pollutants, and has the advantages of simple process, convenient operation, high treatment efficiency, good removal effect, strong adaptability, green environmental protection and the like, and has important promoting significance for deep purification of organic pollutant wastewater.

The invention relates to the technical field of bamboo processing and modification treatment, and discloses a method for improving high-permeability bamboo modification, which comprises the following steps: preparing a mixed aqueous solution of 9.25-37 mmol / L of alkali compound and 9.3-27.8 mmol / L of persulfate, and dipping bamboo at normal temperature for 3-6 hours; the soaked bamboo wood is heated and activated, and the activation mode is selected from one of 60-80 DEG C constant-temperature water bath treatment, 300-550 W microwave radiation treatment or 100-400 W ultrasonic radiation treatment; and after the activated bamboo wood is cleaned to be neutral, freeze drying is conducted at the temperature ranging from-50 DEG C to-70 DEG C. According to the method, free radicals generated by alkali liquor swelling and synergistic thermal activation of persulfate are utilized, bamboo blocking pore extracts are oxidized and degraded, a fluid conduction path is dredged, the permeability and porosity of the bamboo are improved, the original mechanical strength of the bamboo is kept, and the technical problems that traditional modified liquid medicine is difficult to permeate, and a skeleton is damaged due to strong base treatment are solved.

The invention relates to the technical field of precious metal recovery and water treatment, in particular to application of cobalt catalytic activation persulfate in recovery of gold in thiosulfate leachate. The invention provides application of cobalt catalytic activation persulfate in recovery of gold in thiosulfate leachate. The method comprises the following steps: blending a cobalt catalyst, persulfate and a thiosulfate leaching solution containing Au (S2O3) 2 < 3->, and carrying out complex breaking reduction to obtain a gold elementary substance. The CoNC / persulfate technology provided by the invention is proved to be a catalytic system based on singlet oxygen species, has high oxidation capacity and strong complex breaking selectivity, shows remarkable solution acid-base property adaptation and coexisting cation / anion interference resistance, and has ultrahigh recovery selectivity.

The application discloses a method for activating persulfate for improving the degradation performance of organic pollutants based on a flow-through electrocatalytic membrane, which comprises two steps of preparing a boron nitride electrocatalytic membrane loaded with bimetallic nanoparticles and carrying out a flow-through degradation reaction. Compared with a traditional mode, the flow-through mode provided by the application realizes effective coupling of a membrane catalytic system and a conventional electro-activated persulfate system, breaks through the limitation of low mass transfer efficiency, significantly improves the utilization rate of persulfate, and thus improves the degradation efficiency of organic pollutants. The flow-through reactor provided by the application has the advantages of simple structure, strong operability, low catalyst loss and good stability, has a wide industrial application prospect, and provides an efficient, economical and sustainable solution for the degradation of organic pollutants.

The present application relates to a kind of iron salt reinforced heat-activated persulfate treatment organic wastewater method, the method includes the following steps: adding iron salt to wastewater, adjust the pH of solution to acidic, subsequently control the reaction temperature to be above 60 DEG C, and add persulfate to reaction solution to carry out reaction, after reaction, solid-liquid separation is carried out to reaction system, realize the complete removal of organic pollutants.The present application is based on heat-activated persulfate polymerization removal organic pollutants, introduce iron salt to strengthen the polymerization removal process of organic matter.Compared with prior art, by the synergistic effect of iron salt and persulfate, the utilization efficiency of oxidant and the removal rate of organic pollutants are greatly improved, while the generation of toxic intermediates is reduced, the application range of polymerization removal organic pollutants in water is widened, and the carbon emission problem caused by CO2 is avoided.

The application belongs to the technical field of composite materials, and relates to a preparation method of a kind of red mud reinforced anaerobic digestion biogas residue biochar loaded coating reduced graphene oxide layer carbon nitride (CN@rGO / RCH) high-efficiency catalyst, which comprises: CN and GO are fully stirred and ultrasonically dispersed in deionized water, and the solid-liquid mixture is hydrothermally reacted at 160-200 DEG C for 12-24 hours to obtain CN@GO; CN@GO and RCH are fully mixed and dispersed in deionized water, and are placed in a gas bath constant-temperature oscillation box for ultrasonic oscillation; after centrifugal drying, pyrolysis is carried out at 700-900 DEG C in an inert gas for 2-4 hours, and after cooling to room temperature, the catalyst is obtained. The prepared catalyst is applied to activate persulfate to degrade tetracycline in water. The preparation process is simple, controllable and environmentally friendly, and by loading and coating carbon nitride with reduced graphene oxide layer after anaerobic high-temperature pyrolysis and hydrochloric acid modification of red mud reinforced anaerobic digestion biogas residue, the environmental hazard solid waste produced by anaerobic digestion is recycled and reused, and the purpose of rapidly degrading tetracycline in water is achieved.

This invention discloses a method for preparing and applying a class of highly efficient catalytic materials for activating persulfate. The preparation method includes: dispersing g-C3N4 in nitric acid at room temperature, stirring, washing, and drying to obtain g-C3N4-H; placing it in an inert atmosphere and treating it at high temperature to obtain a g-C3N4 substrate; mixing it with iron salt, cobalt salt, water, and 1,10-phenanthroline to obtain a suspension; evaporating to dryness, grinding, drying, treating at high temperature, dispersing in nitric acid, washing, drying again, treating at high temperature in an inert atmosphere, and naturally cooling to obtain FeCo-g-C3N4 catalytic material. The method of this invention constructs structurally stable and highly dispersed FeCo bimetallic-nitrogen-carbon active centers on the g-C3N4 substrate; it can achieve efficient degradation of pollutants with low dosage, while the metal leaching rate is extremely low, avoiding secondary pollution; this catalytic material combines high activity, high stability, environmental friendliness, and operational economy, showing outstanding application potential in the field of advanced oxidation water treatment.

The invention relates to an oil-containing sludge biochar catalyst, a preparation method thereof and a method for removing organic pollutants in sewage, the method comprises the following steps: S1, heating a mixture containing saccharides, amino compound raw materials, inorganic alkali and oil-containing sludge for Maillard reaction to obtain a precursor containing a nitrogen-containing heterocyclic compound; wherein the amino compound raw material contains amino acid and / or protein; and S2, in an inert atmosphere, carrying out pyrolysis on the precursor containing the nitrogen heterocyclic compound. The oily sludge biochar catalyst prepared by the method disclosed by the invention has a better catalytic effect on activating persulfate to degrade organic pollutants in a water body.

The invention discloses a preparation method and application of a heterogeneous activated persulfate catalyst, and the preparation method comprises the following steps: step 1, immersing a decommissioned LiFePO4 soft package battery in a 5% NaCl solution for 24 hours, and reducing the voltage of the battery to 0.5 V or below; then the discharged battery is disassembled in a glove box filled with nitrogen, and an aluminum plastic film, a negative pole piece and a diaphragm are separated out; separating an aluminum foil from a positive electrode material by using a scraper for the detached positive electrode plate, placing the material in 1: 1 hydrochloric acid, performing acid leaching for 2 hours, then performing ultrasonic water washing until the material is neutral, placing the material in an air dry oven, and drying at the temperature of 80 DEG C; and finally, the heterogeneous activated persulfate catalyst based on the retired LiFePO4 material is obtained. The preparation method provides dual solutions for high-value utilization of the retired battery material and organic wastewater treatment.

The invention discloses a Co3O4-Cu2-xS composite photo-thermal catalyst as well as a preparation method and application thereof. The composite photo-thermal catalyst is prepared by taking a surfactant as a bridge and compounding Co3O4 and Cu2-xS. The composite photo-thermal catalyst has a reduced band gap width, can effectively promote migration and separation of photon-generated carriers, enhances the absorption efficiency of visible light-near infrared light, and shows excellent photo-thermal conversion performance. The composite photo-thermal catalyst can be used for constructing a Co3O4-Cu2-xS + PMS + NIR catalytic system, and peroxymonosulfate is activated under the irradiation of near-infrared light so as to degrade antibiotics in water. Experiments prove that the Co3O4-Cu2-xS + PMS + NIR system disclosed by the invention can achieve the degradation rate of 99% on levofloxacin within 20 minutes, and the generation efficiency of active species is remarkably improved through the synergistic effect of a photothermal effect and interface activation. The catalyst has broad-spectrum degradation activity on various antibiotics, keeps efficient and stable catalytic performance in a wide pH range, and shows excellent ion interference resistance and adaptability to various water bodies.

A porous biochar adsorption material for water purification, a preparation method and a method for using the same to treat pharmaceutical wastewater. A porous biochar adsorption material for water purification, comprising porous biochar particles with a porosity of 70-85%, wherein the porous biochar particles comprise porous biochar particles doped with Zn ions and Mn ions. The present application clarifies the porosity of the porous biochar adsorption material for water purification and the doping of Zn ions and Mn ions. The high porosity gives the biochar material a huge specific surface area, providing ample space for the adsorption and reaction of substances. This means that when treating pharmaceutical wastewater, more drug molecules can contact the biochar surface, thereby improving the adsorption efficiency. Zn ion and Mn ion doping form special active sites inside the biochar, which can activate persulfate and generate free radicals with strong oxidizing properties, thereby efficiently degrading pollutants in the pharmaceutical wastewater.

The application discloses a method for degrading soil organic pollutants, a biomass charcoal material and a preparation method. A self-supporting charcoal material with a high aspect ratio and capable of activating persulfate is partially inserted into soil containing organic pollutants and partially exposed to soil containing organic pollutants, and persulfate is added to the soil. Under illumination, the self-supporting charcoal material uses capillary action to adsorb soil organic pollutants to the part of the self-supporting charcoal material exposed to the illumination, and the self-supporting charcoal material activates the persulfate to degrade the adsorbed soil organic pollutants. The biomass charcoal with a high aspect ratio inherits the hydrophilicity of biomass and a natural vertical channel structure, and under the action of a thermal gradient and a concentration gradient, transports the soil organic pollutants to the inside of the biomass charcoal, and is mineralized under the oxidation of persulfate-derived radicals. In the case that the soil is not tilled and replaced, the purpose of degrading and removing the soil organic pollutants is achieved.

This invention belongs to the field of straw resource utilization technology, and discloses a method for preparing and applying an amino-containing straw cellulose CuFe composite material. By pretreating straw with ammoniation at low temperature to increase the proportion of nitrogen-containing active functional groups and improve the adsorption capacity of the straw material, a spherical amino-containing straw cellulose CuFe composite material is synthesized using a one-step hydrothermal method. This spherical amino-containing straw cellulose CuFe composite material can be used to activate persulfate to degrade pesticides and other organic pollutants in soil or farmland runoff, exhibiting the characteristic of simultaneous adsorption and degradation of organic pollutants, thus achieving in-situ degradation of pesticide residues in soil.

The application discloses a method for treating antibiotic wastewater by using a graphdiyne / ferrous indium sulfide nanocomposite to activate persulfate, and the method is characterized by using the graphdiyne / ferrous indium sulfide nanocomposite as a catalyst to activate persulfate for degrading and treating antibiotic wastewater, wherein the graphdiyne / ferrous indium sulfide nanocomposite comprises ferrous indium sulfide nanoparticles, and the nanoparticles are loaded with graphdiyne nanosheets. The method for treating antibiotic wastewater by using the graphdiyne / ferrous indium sulfide nanocomposite to activate persulfate uses the graphdiyne / ferrous indium sulfide nanocomposite as a catalyst, wherein the nanocomposite has many reactive sites, high catalytic activity and good stability, can efficiently activate persulfate with a smaller amount of catalyst, can efficiently remove antibiotics in wastewater, and has the advantages of low cost, high treatment efficiency, good removal effect, green environmental protection and the like, and therefore, the method has important significance for effectively purifying antibiotic wastewater, has high use value and good application prospect.