157 results about "Peroxymonosulfuric acid" patented technology

The invention discloses a cobalt-loaded covalent organic framework material as well as a preparation method and application thereof, and belongs to the technical field of catalyst preparation. The cobalt-loaded covalent organic framework material is prepared by taking a carbonized covalent organic framework as a matrix and cobalt nitrate hexahydrate as a cobalt source, reducing by using a sodium borohydride methanol solution, and introducing transition metal cobalt into the framework through room-temperature impregnation and thermal reduction processes. In the material, active components comprise Co0 and Co < 2 + > which are uniformly distributed on a carrier. Moreover, the metal cobalt is stably loaded in a carbon skeleton through the bonding effect of heteroatoms such as nitrogen and carbon, so that the stability, the catalytic activity and the durability of the metal cobalt are effectively improved, the dissolution risk of the metal cobalt is reduced, the hidden danger of environmental pollution is reduced, and efficient catalytic activity is shown in the aspect of catalyzing and activating peroxymonosulfate to degrade organic pollutants; and good recycling stability is achieved.

The invention provides an efficient chloramphenicol degradation method based on Co-Cu-carbon composite nano-catalyst activated peroxymonosulfate, which comprises the following steps: regulating the Co / Cu molar ratio in a bimetal organic framework precursor, and performing pyrolysis to prepare the Co-Cu-carbon composite catalyst with an optimized pore structure, graphitization degree and metal dispersity; peroxymonosulfate is activated by utilizing the synergistic effect of Co / Co and Cu / Cu redox pairs to generate sulfate free radicals, hydroxyl free radicals, singlet oxygen and superoxide free radicals, and direct oxidative degradation of chloramphenicol is promoted by taking a catalyst as an electron transfer bridge; the method realizes rapid and efficient removal of chloramphenicol, high mineralization rate, excellent cycle stability and strong anti-interference capability, and solves the technical problems of low removal efficiency, high cost and easy secondary pollution in the prior art.

The invention belongs to the technical field of environmental catalytic materials and pollutant control, and particularly relates to a Ni-coated NiS < 2 >-coated MoS < x > / NF composite catalyst and a preparation method and application thereof. According to the preparation method of the Ni-coated NiS2-coated MoSx / NF composite catalyst provided by the invention, the Ni-coated NiS2-coated MoSx / NF composite catalyst with a self-supported metal / crystalline / amorphous heterojunction is constructed by virtue of a collaborative strategy of directional self-assembly and internal Ni source and water dispersion, and meanwhile, the activation efficiency of peroxymonosulfate (PMS) can be remarkably improved by combining an Ni-Mo bimetal active center, so that the activation efficiency of the Ni-coated NiS2-coated MoSx / NF composite catalyst is improved. The problems that an existing catalyst is limited in active site and poor in structural stability are solved, the excellent capacity of activating PMS to remove antibiotics is shown, therefore, efficient degradation of antibiotic pollutants is achieved, and the catalyst has wide application prospects in antibiotic wastewater treatment.

The invention discloses a catalyst for simultaneously removing cyanide and organic matters in wastewater by a peroxymonosulfate oxidation method as well as a preparation method and application of the catalyst, and belongs to the field of chemistry and chemical engineering, in particular to the technical field of catalyst preparation. According to the preparation method, metal oxides such as molybdenum, cerium, vanadium and the like are introduced as a substrate, precise doping of cobalt and nickel and loading of noble metal nanoparticles are performed, and the structural stability and the anti-sintering capability of the catalyst are enhanced through surface modification while uniform distribution of metal elements is ensured, and efficient performance is kept for a long time under high-temperature complex reaction conditions; the catalyst prepared by the method is applied to simultaneous removal of cyanides (free cyanogens and complex cyanogens) and organic matters in wastewater by a peroxymonosulfate oxidation method, has excellent catalytic activity, can quickly reach the degradation rate of 90% or above for 100pmm cyanides (free cyanogens and complex cyanogens) and 200mg / LCOD organic matters in wastewater, and has excellent degradation effect and reaction rate.

The invention provides a method for degrading a perfluoroalkyl compound by activating peroxymonosulfate based on a graphite electrode. Comprising the following steps: step 1, pretreatment of a graphite rod electrode: soaking the graphite rod electrode in a sulfuric acid solution to remove surface impurities; step 2, preparing an electrolyte: preparing the electrolyte containing a perfluoroalkyl compound to be degraded, a background supporting electrolyte and peroxymonosulfate (PMS), and fully stirring to ensure uniform distribution; and step 3, inserting the pretreated graphite rod electrode into electrolyte in an electrolytic bath, adjusting current and voltage, and carrying out electrolysis under the condition of solution stirring. According to the method, the feasibility of activating the PMS to degrade the perfluoroalkyl compound by the low-oxygen-evolution-potential electrode is proved for the first time, and the cognitive limitation of the traditional technology is broken through; the prior art generally depends on a high oxygen evolution potential electrode (such as a BDD electrode, and the oxygen evolution potential is larger than 2.0 V / SHE) to activate PMS so as to degrade perfluoroalkyl compounds.

The invention discloses a zinc-sulfur co-doped ZIF-67 derivative composite material as well as a preparation method and application thereof, and belongs to the technical field of advanced oxidation. The composite material is prepared through a coordination-substitution-calcination integrated process. The preparation method comprises the following steps: firstly, mixing a cobalt source and an organic ligand in methanol, and introducing a sulfur source to form a cobalt-based precursor; and drying, grinding with a zinc source, and calcining in an inert atmosphere. According to the method, stable cobalt active sites are replaced by isocrystals of zinc, sulfur doping promotes cobalt and peroxymonosulfate to form a weak oxidizing intermediate, and efficient and high-selectivity degradation of organic pollutants is achieved under the condition that a strong free radical path is not needed. The material is stable in structure and high in water quality interference resistance, is suitable for catalyzing peroxymonosulfate to degrade organic pollutants in a water body, and particularly has remarkable advantages in a complex water body.

The present disclosure provides tooth whitening oral care compositions comprising potassium peroxymonosulfate having improved stability and methods of using the same.

The invention discloses a biomass carbon loaded manganese dioxide catalyst as well as a preparation method and application thereof. The biomass carbon loaded manganese dioxide catalyst comprises a carrier and MnO2 loaded on the surface of the carrier, and the carrier is carbonized biomass obtained by performing alkali treatment and hydrogen peroxide treatment on biomass and then carbonizing the biomass in an inert atmosphere. The supported catalyst prepared by the method has proper valence and morphology, a MnO2 mixed phase appears, more oxygen vacancies are generated, generation of free radicals in the activation process of peroxymonosulfate (PMS) is facilitated, PMS can be effectively activated to remove organic pollutants, and the activation efficiency of MnO2 on PMS and the operation stability of MnO2 in a packed column are greatly improved. Compared with a traditional method for adjusting the oxygen vacancy of MnO2, the method for loading the biochar is relatively controllable, simple in mode and low in cost.

The invention relates to a method for treating wastewater by activating peroxymonosulfate through cobalt nanoparticle encapsulated carbon nanotubes, which comprises the following steps: adding a nanoparticle encapsulated carbon nanotube catalyst with the concentration of 10-200mg / L into wastewater, and stirring; after uniformly stirring, adding peroxymonosulfate with the concentration of 0.1-2.0 mmol / L to generate hydroxyl radicals to degrade organic pollutants in the wastewater; and after the wastewater is treated, recovering the nano-particle encapsulated carbon nanotube catalyst. According to the invention, the carbon nano tube provides a protection effect on the cobalt nano particles and plays a role in continuously and efficiently activating peroxymonosulfate to generate active species, so that the carbon nano tube has excellent recycling performance; meanwhile, in practical application, the commercial PES film loaded with the cobalt nanoparticle encapsulated carbon nanotube catalyst can be used for continuously and effectively removing organic pollutants.

The invention discloses a method for degrading bisphenol organic pollutants. The method comprises a preparation method of ferromanganese spinel with a rare earth doped particle structure and an application of the ferromanganese spinel and peroxymonosulfate in degrading the bisphenol organic pollutants by cooperating with a hydrodynamic cavitation technology. Mainly relates to combination of a Fenton-like oxidation technology and a hydrodynamic cavitation technology for activating peroxymonosulfate by using ferromanganese spinel with a rare earth doped particle structure. Comprising the following steps: activating persulfate through transfer electrons between surface defects and rare earth elements of prepared ferromanganese spinel with a rare earth doped particle structure under a hydrodynamic cavitation condition, so as to generate a large number of superoxide free radicals to degrade bisphenol organic pollutants. A rich gas-liquid interface provided by nano bubbles generated by hydrodynamic cavitation is combined, and the contact opportunity of active oxygen species and pollutant molecules is increased, so that the reaction rate and the degradation efficiency are improved. According to the method, efficient degradation of bisphenol organic pollutants is realized, and a green and efficient solution is provided for water treatment.

The invention belongs to the technical field of solid waste recycling and organic wastewater treatment, and particularly relates to a method for treating organic wastewater by utilizing a composite material constructed by waste lithium iron phosphate to activate peroxymonosulfate. The method comprises the following steps: carrying out pyrolysis treatment on a waste lithium iron phosphate battery positive electrode material, and collecting a waste lithium iron phosphate SLFP powder material; preparing the SLFP into a uniform solution; sodium molybdate dihydrate and thioacetamide are added into the solution for a hydrothermal reaction, and a composite catalyst material SLFP-MoS2 is prepared; putting the catalyst into the wastewater to achieve adsorption equilibrium; and adding peroxymonosulfate to trigger an oxidation reaction, and removing organic pollutants in the solution. The SLFP-MoS2 catalyst provided by the invention can realize mutual promotion of Fe-Mo bimetal active sites, ensures stable circulation of iron ions and molybdenum ions in a local microenvironment, further activates peroxymonosulfate (PMS) to generate active species, and realizes effective removal of organic pollutants in wastewater.

The invention discloses a tetrathiomolybdate intercalated ternary iron-magnesium-zinc layered double hydroxide catalyst, a preparation method thereof and an application of the tetrathiomolybdate intercalated ternary iron-magnesium-zinc layered double hydroxide catalyst in degrading azo dyes by activating peroxymonosulfate. According to the method, a carbonate intercalated ternary LDH precursor is synthesized through a hydrothermal reaction, interlayer anions are replaced with nitrate and tetrathiomolybdate through ion exchange, and the target catalyst is obtained. In the catalyst, a unique Fe-Mg-Zn ternary metal laminate and a MoS < 2-> intercalation structure cooperatively construct a multi-active center, and MoS < 2-> is used as an electron donor to promote cyclic regeneration of Fe < 3 + > / Fe < 2 + >. The catalyst keeps ultrahigh activity in a wide range of pH (potential of hydrogen) of 3-9, can completely degrade 10 mg / L of acid orange 7 within 5 minutes, and is stable in structure and low in metal dissolution risk. The problems of low activity, slow Fe < 3 + > reduction, metal ion dissolution and the like under neutral and alkaline conditions in an advanced oxidation technology based on peroxymonosulfate are solved, and the method has important application value in the field of printing and dyeing wastewater treatment.

The invention relates to a silver-iron diatom modified carbon nitride (AgFe-CN) photocatalytic material capable of synchronously removing organic pollutants and pathogenic bacteria as well as a preparation method and application of the silver-iron diatom modified carbon nitride (AgFe-CN) photocatalytic material, and belongs to the field of environmental chemistry and material science. The catalyst is prepared through a supramolecular coordination-thermal polymerization method, wherein silver and iron are highly dispersed on a porous carbon nitride substrate in a monatomic form. The monatomic Ag and Fe synergistically construct an electron channel, and jointly endow the catalyst with excellent photocatalytic activity. The preparation method comprises the following steps: combining the catalyst with peroxymonosulfate (PMS) to construct an AgFe-CN / PMS / Vis photocatalytic Fenton-like synergistic system; in the system, the catalyst can lead generation of an advanced oxidation system which takes singlet oxygen as a main component and cooperates with superoxide free radicals and high-valence iron oxygen species, so that efficient and synchronous removal of various organic pollutants and pathogenic microorganisms in the water body is realized. The catalyst is simple in preparation process and mild in condition, and the constructed water treatment method is high in efficiency, high in universality and good in stability and has wide application prospects.

The invention discloses an iron-cobalt spinel oxide, which is prepared by the following steps: with ferric salt and cobalt salt as raw materials, dissolving the ferric salt, the cobalt salt and sodium acetate in an ethanol aqueous solution to obtain a precursor solution, carrying out hydrothermal treatment on the precursor solution, and washing and drying a reaction product to obtain the iron-cobalt spinel oxide. The iron-cobalt spinel type oxide is stable in crystal structure, the leaching rate of metal ions is remarkably reduced due to existence of metal-oxygen bonds, the recycling rate is increased, and meanwhile the risk of secondary pollution of water is reduced. In the process of degrading nitrogen-containing organic wastewater by an advanced oxidation technology for generating sulfate free radicals based on peroxymonosulfate, the iron-cobalt spinel type oxide has good catalytic performance, and can basically complete degradation of multi-nitrogen organic pollutants in water; and the method has relatively strong capability of resisting interference of inorganic ions and organic matters, and has relatively great application potential in actual wastewater treatment. The invention also discloses a method for degrading the multi-nitrogen explosive wastewater by using the ferrocobalt spinel type oxide.

The invention discloses a synthesis method and application of a peroxymonosulfate activated catalyst, and relates to the technical field of catalysts and the field of wastewater treatment. The composite material with negligible cation leaching, higher reusability and higher stability is obtained through a synthesis method, and the composite material has excellent activation performance in peroxymonosulfate (PMS), so that the degradation of paracetamol (acetaminophen) has remarkable catalytic activity. According to the preparation method disclosed by the invention, a proper amount of CoFe layered double hydroxide is mixed with melamine at a medium synthesis temperature, so that CoFe layered double oxide (CoFe LDO) on g-C3N4 is prepared, and an environmental pollution abatement compound with extremely high attraction is formed. According to the method, a new method of a free radical and electron transfer process coupling mechanism is created, the processes are synergistic, acetaminophen degradation can be promoted in the dark within 10 min, and an important reference value is provided for development of an efficient and stable PMS activated catalyst.

The application discloses a preparation method and application of nitrogen-doped oxygen-rich hierarchical porous carbon, and adopts a one-step co-activation method to prepare the nitrogen-doped oxygen-rich hierarchical porous carbon, which is simple in process and low in energy consumption. The structure and surface chemical performance of the prepared nitrogen-doped oxygen-rich hierarchical porous carbon catalyst are easy to control. The prepared TNS-X material has a large specific surface area and a developed pore structure, which is beneficial to exposure of catalytic sites and diffusion of reactants. Through ammonia and water vapor co-activation, efficient doping of nitrogen atoms and oxygen atoms is realized, the number of catalytic sites is increased, and the catalytic activity is improved. The TNS-800 material exhibits high catalytic performance in a peroxymonosulfate (PMS) activation process, and can completely remove organic pollutants such as acetylaminophenol in a short time.

The present disclosure provides tooth whitening oral care compositions comprising potassium peroxymonosulfate having improved stability and methods of using the same.

The invention discloses a device and a method for synchronously removing heavy metals and organic matters in industrial wastewater, and particularly relates to the technical field of water treatment.A complexing agent is used for promoting manganese dioxide on the surface of manganese sand to activate peroxymonosulfate to generate high-activity sulfate free radicals and persulfate free radicals, so that the oxidative degradation efficiency of organic pollutants is improved; meanwhile, residual manganese dioxide formed in the reaction process has good heavy metal adsorption performance, and the mass transfer and reaction rate of pollutants is enhanced by combining the dynamic fluidized contact effect of manganese sand particles in the fluidized bed reactor. According to the process provided by the invention, various organic pollutants and heavy metal ions in the wastewater can be synchronously and efficiently removed under a mild condition, the problems of low treatment efficiency, complex process flow, secondary pollution and the like in a traditional method are avoided, and the process has a good application prospect and popularization value; the technical challenges of complex components and high treatment difficulty of industrial wastewater can be effectively handled.

The invention relates to the technical field of photocatalytic materials, in particular to a metal single atom loaded defect carbon nitride catalyst and a preparation method and application thereof. The method comprises the following steps: by taking melamine as a nitrogen source, soluble metal salt as a metal source and ethylenediaminetetraacetic acid as a chelating agent, carrying out freeze drying in a solvent system, calcining in a protective atmosphere, and carrying out thermal polymerization, so as to obtain the metal single atom loaded defective carbon nitride catalyst. The metal in the soluble metal salt is copper, iron or manganese. Precise anchoring and high dispersion of metal ions are achieved through complexing of ethylenediamine tetraacetic acid, a stable metal-N coordination structure is formed, metal agglomeration is avoided, a defect structure is constructed synchronously, and the metal monatomic loading capacity is 1 wt.%-7 wt.%. The catalyst can efficiently catalyze and activate peroxymonosulfate and rapidly degrade antibiotic pollutants such as tetracycline, has the advantages of being low in preparation cost, environmentally friendly, high in catalytic activity and high in stability, and is suitable for the field of water pollution remediation.

The invention discloses a method for catalytically degrading dye wastewater based on tetrahedrite. The method comprises the steps that tetrahedrite is subjected to mechanical activation and then mixed with peroxymonosulfate, the mixture is added into dye wastewater, the initial pH of a system is adjusted, a catalytic degradation reaction is carried out, tetrahedrite is recovered after the reaction is finished, and tetrahedrite is obtained. The mass molar ratio of tetrahedrite to peroxymonosulfate is (0.33-6): 1g / mmol; the mass ratio of tetrahedrite to organic residues in the dye wastewater is (10-80): 1. According to the method, active sites on the surface of tetrahedrite are used for adsorbing PMS molecules, PMS is activated through electron transfer to generate active free radicals, singlet oxygen in the active free radicals plays a main role, superoxide free radicals and sulfate free radicals play auxiliary roles, and therefore the catalytic activity and the degradation rate of organic matter in dye wastewater are greatly improved.

The application discloses an electrode material based on MOF@COF / BC and application thereof in wastewater treatment and belongs to the technical field of wastewater treatment. The electrode material is prepared by the following method: NH2-MIL101(Fe), melamine and phthalocyanine molybdenum are dissolved in dimethyl sulfoxide, reaction is carried out at 160-200 DEG C for 10-14 h, the precipitate is collected after reaction, and washing, drying are carried out to prepare NH2-MIL101(Fe)@Mel-MoPc; the biochar and NH2-MIL101(Fe)@Mel-MoPc are mixed in deionized water, ultrasonic treatment is carried out for 8-12 min, stirring is carried out for 10-14 h, then the precipitate is collected by centrifugation, and washing, drying are carried out to prepare the electrode material. The application develops and designs a novel electrode material, which is used for electrocatalytic activation of peroxymonosulfate to degrade OFX wastewater, and the degradation efficiency of the OFX wastewater is greatly improved.

The invention relates to silkworm cocoon-shaped zinc silicate nano-particles and a preparation method and application thereof, and the preparation method of the silkworm cocoon-shaped zinc silicate nano-particles comprises the following steps: preparing a zinc salt aqueous solution; mixing the zinc salt aqueous solution with the tetraethyl silicate solution, and adjusting the pH value to 7.0 to obtain a mixed solution; carrying out a reaction on the mixed solution in a hydrothermal reaction at a temperature of 180-200 DEG C for 12-18 h to obtain a precipitate; and washing and drying the precipitate to obtain the silkworm cocoon-shaped zinc silicate nanoparticles. The invention further provides the silkworm cocoon-shaped zinc silicate nano-particles prepared by the preparation method of the silkworm cocoon-shaped zinc silicate nano-particles and application of the silkworm cocoon-shaped zinc silicate nano-particle activated peroxymonosulfate in degradation of tetracycline antibiotics. The defects in antibiotic wastewater treatment in the prior art are overcome, the prepared silkworm cocoon-shaped zinc silicate nanoparticles provide efficient and stable catalytic performance for peroxymonosulfate, and efficient removal of tetracycline antibiotics is achieved.

The invention discloses a nickel-phosphine co-doped molybdenum disulfide composite material as well as a preparation method and application thereof. According to the method, nickel ions and organic phosphonic acid molecules are co-doped into the structure of molybdenum disulfide, and the nickel-phosphine co-doped molybdenum disulfide composite material with high stability and catalytic performance is prepared by fully utilizing the good conductivity of molybdenum disulfide, the chemical modification function of organic phosphonic acid and the strong oxidation-reduction activity of the nickel ions. The composite material shows excellent catalytic performance in the aspect of catalytically activating peroxymonosulfate to oxidize and degrade organic pollutants, can effectively degrade the organic pollutants in wastewater, and has the advantages of mild reaction conditions, high degradation rate, high catalytic stability, high pollution resistance, high reusability and wide application prospect.

The invention belongs to the technical field of sewage advanced oxidation technology treatment, and particularly relates to a defluorination device and method for peroxymonosulfate and manganese ferrite synergistic dielectric barrier discharge. The method comprises the following steps: 1) preparing a mixed sample of peroxymonosulfate, manganese ferrite and fluorine-containing organic matters; and 2) carrying out discharge degradation by adopting the device. The device comprises a voltage regulator; the plasma generator is electrically connected with the voltage regulator; the dielectric barrier discharger is electrically connected with the plasma generator; wherein the dielectric barrier discharger is filled with a mixed dispersion liquid of peroxymonosulfate and manganese ferrite. The peroxymonosulfate and the manganese ferrite cooperate with the dielectric barrier discharge, so that multiple technical problems of low defluorination efficiency of fluorine-containing organic matters such as PFOA, low utilization efficiency of DBD energy and DBD active substances, low activation efficiency of PMS and the like are effectively solved.

This invention discloses an interference-resistant method for purifying DOM-rich, high-arsenic groundwater. The method involves adding an Fe / Co bimetallic organic framework (BOF) material and potassium persulfate solution to a high-arsenic groundwater sample rich in dissolved organic matter, maintaining stirring at room temperature, and achieving efficient simultaneous oxidation-adsorption removal of As(III). This method is unaffected by dissolved organic contaminants and common anions and cations. The method described herein, using the Fe / Co BOM coupled with peroxymonosulfate, can effectively purify complex, high-arsenic groundwater.

The present invention discloses a modified vermiculite-loaded cubic cobalt-manganese spinel material and a preparation method thereof, belonging to the technical field of environmental remediation functional materials. The present invention first synthesizes cubic cobalt-manganese spinel by in-situ coprecipitation on the surface and interlayers of vermiculite. The vermiculite-loaded cubic cobalt-manganese spinel material is then modified using hexadecyltrimethylammonium bromide to prepare the modified vermiculite-loaded cubic cobalt-manganese spinel material. The reaction conditions are mild, and no toxic or hazardous raw materials are involved. The prepared catalyst is stable, efficient, and environmentally friendly, effectively reducing the activation energy of oxidants such as peroxymonosulfate, thereby achieving efficient removal of perfluorooctanoic acid.

The present invention relates to the field of energy conservation and environmental protection, and more particularly to a catalyst for degrading organic pollutants, a preparation method thereof, and an application thereof. Double-modified MCM-49 zeolite nanocrystals are prepared in a one-step method by hexamethylimine and quaternary ammonium salt as a dual-template agent. This makes the prepared MCM-49 zeolite nanocrystals amphiphilic, i.e., having both hydrophilic and lipophilic properties and synergistic effects with peroxymonosulfate or peroxydisulfate, and can efficiently degrade organic pollutants such as antibiotics, dyes, and endocrine disruptors within a wide pH range, and is suitable for treating wastewater containing organic pollutants. The number of reuses is ≥10 times, and the activity retention rate of the catalyst reaches more than 95%. The catalyst preparation process of the present invention is simple, low cost, and has good application prospects.

The invention discloses a method for degrading benzo (alpha) pyrene in water by using gamma rays, belongs to the technical field of sewage treatment, and aims to solve the technical problem that the degradation efficiency and the degradation degree of the benzo (alpha) pyrene in the water by using the gamma rays in the prior art need to be further improved. An iron circulation-peroxymonosulfate composite system composed of a quaternized porous aromatic material, a sulfonated silicon-based hybrid channel material and a cross-linked beta-cyclodextrin material in a synergistic manner is constructed, and the quaternized porous aromatic material realizes stable enrichment of pollutants and peroxymonosulfate through a positive electricity interface; the sulfonated silicon-based hybrid channel material provides a continuous coordination and electron transfer environment for iron species, the cross-linked beta-cyclodextrin material performs confinement and secondary inclusion on hydrophobic pollutants and intermediates, and the sulfonated silicon-based hybrid channel material, the cross-linked beta-cyclodextrin material, the hydrophobic pollutants and the intermediates form a mutually linked reaction path in structure and function, so that construction and maintenance of a reaction micro-domain and continuous organization of the reaction path are realized, and the hydrophobic pollutants and the intermediates are subjected to continuous coordination and electron transfer. Therefore, the degradation efficiency and the cycling stability of pollutants are remarkably improved.

This invention provides a method for the degradation of bisphenol A (BPA) by persulfate activated by tea residue and iron filings. The method includes: freeze-drying and pulverizing tea residue to obtain coarse tea residue powder; sieving the coarse tea residue powder to obtain tea residue powder; mixing the tea residue powder with iron-containing substances to obtain an iron-containing tea residue mixture; adding the iron-containing tea residue mixture to a solution containing persulfate and BPA to initiate a chemical reaction; and measuring the BPA content to obtain the measurement results. This invention utilizes tea residue to replace pure tea polyphenols, constructing a persulfate degradation system activated by tea residue and iron filings, achieving a high-efficiency removal of 93.7% of BPA. This not only maintains the complexation and reduction advantages of tea polyphenols but also realizes the resource utilization of waste. It provides a low-cost, green, and sustainable technical path for BPA pollution control, with significant environmental and economic benefits.

Various formulations of a disinfectant are disclosed. The disinfectant includes an amount of potassium peroxymonosulfate, at least one organic acid, and at least one surfactant. The disclosed disinfectant can exist in both powder form and liquid form, and can also be in kit form having a variety of form factors. These disinfectant formulations offer higher efficacy and lower toxicity when compared with disinfectants known in the art, and when compared with potassium peroxymonosulfate alone.