27results about How to "High adsorption capacity" patented technology

The invention relates to a fly ash-based hierarchical pore molecular sieve composite material as well as a preparation method and application thereof, and belongs to the technical field of molecular sieve composite materials. In order to solve the problems that an existing fly ash based molecular sieve is single in pore structure, can only adsorb single pollutants and is complex in preparation process, the invention provides a preparation method of a fly ash based hierarchical pore molecular sieve composite material. The method comprises the following steps: carrying out mechanical-chemical coupling activation on fly ash, carrying out alkali fusion activation treatment, preparing a colloidal precursor, carrying out hydrothermal crystallization treatment, carrying out post-treatment on a crystallized product, and carrying out metal ion modification treatment. A micropore-mesopore-macropore three-level pore channel is constructed, the mass transfer efficiency and the adsorption activity are improved, double active sites are formed through metal modification, heavy metal and CO2 can be synchronously adsorbed, and the CO2 capacity is improved by 10-15% through heavy metal loading. The one-step method is adopted for preparation, the process is simplified, the cost is low, high consumption of fly ash is achieved, and the benefits of solid waste recycling and multi-pollutant cooperative treatment are achieved.

The invention relates to a soil microorganism high-efficiency water purification filter material and a preparation process thereof, and aims to solve the problems of low removal efficiency, high cost, easiness in secondary pollution, insufficient affinity with soil microorganisms and the like of the existing microorganism filter material. The filter material is prepared by taking volcanic rock, activated carbon, bentonite and modified cellulose as main raw materials, combining the main raw materials according to a specific ratio, preparing porous particles by virtue of processes such as calcining, activating, mixing, granulating and sintering, and finally loading the porous particles by virtue of a microbial bacterial liquid. The product has a large specific surface area, good adsorption performance and high chemical stability, and can provide an excellent adhesion and growth environment for soil microorganisms. Experiments prove that the filter material can significantly improve the removal efficiency of pollutants such as COD, ammonia nitrogen and total phosphorus in sewage, and the filter material has the advantages of easily available raw materials, low cost and environmental friendliness, and is suitable for the fields of sewage treatment, ecological restoration and the like.

The application discloses a preparation method of an antibiotic selective adsorbent, first, C-BN nanosheet balls are prepared by a simple catalytic thermal evaporation method; second, the C-BN nanosheet balls are used as a main body to limit and load magnetic Fe3O4 nanoparticles; and then mesoporous SiO2 and imprinted polymers are coated on the surface of the C-BN nanosheet balls in sequence, and the tetracycline antibiotic selective adsorbent is obtained after template molecules are eluted. The tetracycline antibiotic selective composite adsorbent with high adsorption capacity is prepared, the high specific surface area of the carrier material and the enrichment antibiotic capacity of the radial structure and the selectivity of the surface molecular imprinting material are fully utilized, the selective adsorption of specific antibiotics in a complex solution is effectively realized, and the adsorption efficiency is effectively improved. The carbon-doped BN and the limited loading magnetic particles enhance the adsorption capacity, and the adsorbent can be quickly recovered and separated under an external magnetic field. Meanwhile, the SiO2 layer and the imprinted polymers enable the antibiotics to be quickly desorbed, and the cycle number is more, so that the antibiotic selective adsorbent has application prospects in the fields of sewage treatment and food antibiotic detection.

This invention relates to the field of ion sieve technology, providing a titanium-based lithium-ion adsorbent, its preparation method, and its applications. The invention involves pyrolyzing NH2-MIL-125(Ti), then mixing it with lithium carbonate for calcination, granulating it using an ethylene-vinyl alcohol copolymer as a binder, and finally acid washing to obtain the titanium-based lithium-ion adsorbent. This invention integrates metal-organic framework (MOF)-derived carbon intercalation, nitrogen doping, and polymer-assisted granulation into a single process, preparing a particulate adsorbent with a hierarchical porous structure, strong hydrophilicity, and abundant active sites, showing great potential for industrial applications. Example results show that the adsorbent of this invention, under conditions of pH=12 and 25℃, exhibits a high Li-ion concentration of 24 h. + The adsorption capacity reached 33.95 mg / g. After five cycles of adsorption and desorption, the adsorption capacity could still reach 96.9% of the initial adsorption capacity, and the titanium dissolution loss in each cycle was only about 0.4%.

The utility model discloses a kind of treatment systems of dust-containing acid flue gas, enamel horizontal spray tower is multiple tower series connection, flue gas inlet and flue gas outlet are provided on the upper end of first and last enamel horizontal spray tower, enamel horizontal spray tower lower end is provided with liquid discharge port, the flue gas inlet of enamel horizontal spray tower is connected with pre-spray pipeline, liquid discharge port is connected to plate-and-frame filter press, alkali absorption tower and acid absorption tower lower end are each provided with flue gas inlet, top end is provided with flue gas outlet, the flue gas outlet of enamel horizontal spray tower is connected with alkali absorption tower inlet, alkali absorption tower flue gas outlet is connected with acid absorption tower inlet, the utility model is combined with on-line in situ adsorption and regeneration collaborative mechanism, through resin adsorption, the removal efficiency of acidic component is strengthened, the problem of high ammonia escape in traditional ammonia absorption technology is solved, with high denitration desulfurization efficiency (>95%), low operating cost, strong sulfur resistance, can long-period operation advantage.

The application relates to the technical field of materials, and discloses a carbon-based adsorption material for treating heavy metal contaminated soil, which is prepared by using surface functionalized activated carbon as a base material, using bentonite and fly ash as auxiliary materials, bonding through biomass guar gum, and then mixing and sintering. The carbon-based adsorption material is prepared by using surface functionalized activated carbon as the main substance of the adsorption material, using bentonite and fly ash as auxiliary materials, realizing adsorption enrichment of heavy metal ions in the soil through the ultrahigh specific surface area of the activated carbon and the bentonite, then performing chemical solidification of the heavy metal ions by using active groups in the structure of the surface functionalized macromolecular reagent, and forming an adsorption mode of adsorption first and then solidification, so that the prepared adsorption material has extremely strong adsorption capacity and does not cause secondary pollution.

The invention discloses an adsorbent material for perfluorinated compounds in water and a preparation method and application thereof, and belongs to the technical field of water treatment materials, 1, 3-diamino-2-hydroxypropane, m-tribenzoic acid and 3, 3 '-(1, 4-phenylene) bis [2-propiolic acid] are used as raw materials to react to obtain a polyamide polymer, and finally the polyamide polymer is hydrolyzed to remove the m-tribenzoic acid to obtain the perfluorinated compounds in the water. The polymer adsorbent material is prepared; the adsorbent material for the perfluorinated compounds in the water, prepared by the invention, has a relatively large specific surface area and adsorption capacity, can be used for adsorbing the perfluorinated compounds in the water, has relatively strong mechanical stability, long service life and regeneration capacity, and has a good application prospect in the aspect of removing the perfluorinated compounds in the water.

The application discloses a treatment system for treating strongly complexed heavy metal wastewater in an electroplating industry, comprising an oxidation reaction tank, a Fenton-like reaction tank, a homogenizing adjusting tank, a chemical mixing tank, a No. I flocculation tank, a No. I sedimentation tank, a heavy metal adsorption tank, a No. II flocculation tank, a No. II sedimentation tank and a clean water tank which are connected in sequence; wherein, the bottom of the No. II sedimentation tank is provided with two sludge discharge ports, one of which is connected with the heavy metal adsorption tank through a sludge backflow pipeline, and the other is connected with a regeneration system. The application also discloses a method for treating strongly complexed heavy metal wastewater in the electroplating industry based on the treatment system. The method adopts the process of first oxidizing and breaking the complex, then adding alkali to precipitate, and finally modifying zeolite to adsorb, so that the electroplating strongly complexed heavy metal wastewater can be treated, the concentration of heavy metal ions in the effluent can be stably reduced to below 0.1 mg / L, and the discharge standard can be reached.

The application relates to the field of calcium oxide production, and discloses a high-temperature stable environment-friendly calcium oxide process, which comprises the following steps: (1) biological template pretreatment and porous CaCO3 precursor preparation: mixing a biological template with limestone powder, and performing freeze drying to form a porous CaCO3 precursor; (2) microwave pulse calcination and decomposition: performing microwave calcination on the precursor obtained in the step (1) under nitrogen protection, and decomposing the precursor into porous CaO; and (3) CO2 in-situ mineralization and coating layer formation: reacting calcination tail gas generated in the step (2) with a magnesium salt solution to generate a coating layer on the surface of the CaO. The application adopts a full-closed system and inert gas dynamic regulation technology scheme, realizes zero exposure transmission of an intermediate product, and solves the problem of oxidation and moisture absorption caused by frequent transfer of materials in the prior art. Compared with a traditional open process, the product stability is improved by more than 3 times, and environmental impurity pollution is completely blocked.

The invention relates to the technical field of industrial wastewater resourceful treatment, and provides a glass thinning etching waste liquid and waste residue resourceful method which comprises the following steps: treating glass thinning etching waste liquid by adopting a sodium chloride precipitation method to obtain first filter residue and first filtrate; neutralizing the glass thinning etching waste residues with ammonia water to obtain second filter residues and second filtrate; adding the second filter residue into the first filtrate, adding a part of the second filtrate, and stirring for reaction to obtain a third filter residue and a third filtrate; adding sodium fluosilicate seed crystals and sodium chloride into the third filtrate, and reacting to obtain fourth filter residues and fourth filtrate; lime is added into the fourth filtrate to adjust the pH value to be 11 or above, meanwhile, a modified flocculant accounting for 1-5% of the mass of the fourth filtrate is added, and a fifth filter residue and a fifth filtrate are obtained through a reaction; synergistic recycling of the glass thinning etching waste liquid and waste residues can be achieved, and particularly step-by-step recycling of the glass thinning etching waste residues can be achieved.

The invention relates to the technical field of carbon dioxide capture and adsorption, in particular to a calcium oxide-based adsorbent for high-temperature carbon dioxide capture and a preparation method. The adsorbent comprises a biomass calcium carbonate matrix, a skeleton proppant, a Ce-Zr-Cu composite oxide bifunctional aid, a conductive dispersant, a macropore-mesopore-micropore hierarchical porous structure formed by biomimetic mineralization of a biological template agent, and an amino functional group grafted by a surface modifier. The biomass calcium carbonate matrix is formed by compounding egg shells, shells and coral bones according to the mass ratio of 1: 1: 0.5; the skeleton proppant is formed by compounding a ZSM-5 molecular sieve and mesoporous gamma-aluminum oxide according to a mass ratio of 2: 1; in the scheme, biomimetic mineralization is realized by compounding a ZSM-5 / gamma-alumina skeleton and a Ce-Zr-Cu ternary auxiliary agent, introducing a PAN-based nitrogen-doped carbon network and matching with a diatom-egg white biological template, and APTES + PEI surface modification is performed, so that the problems of poor sintering, poor circulation, agglomeration and the like of a traditional adsorbent are solved in a targeted manner, double-temperature-zone adsorption is also realized, and the comprehensive performance is greatly improved.

The invention relates to a sulfydryl silicon dioxide coated magnetic biochar material, a preparation method thereof and an application of the sulfydryl silicon dioxide coated magnetic biochar material in adsorbing and removing cadmium ions, the material takes biochar prepared from aquaculture byproducts as a substrate, and Fe3O4 magnetic particles, a silicon dioxide coating layer and a sulfydryl functional group are loaded in sequence. The method comprises the following steps: firstly, synthesizing magnetic biochar containing SiO2-coated Fe3O4 particles on the surface by a coprecipitation method under an alkaline condition, and then carrying out sulfydryl modification on the magnetic biochar by a grafting method to finally prepare the sulfydryl-modified silicon dioxide-coated magnetic biochar adsorbent. The adsorbent prepared by the method has the characteristics of high specific surface area, abundant pore structures, a large number of sulfydryl active groups and the like, shows high adsorption capacity and good selectivity on cadmium ions in water, and can be conveniently separated and recycled through magnetism. The material can also be used for adsorbing lead, copper, zinc, chromium and other heavy metal ions, the preparation process is simple, and the material has wide application prospects in the field of heavy metal wastewater treatment.

The present application belongs to the technical field of adsorption materials, and particularly relates to a preparation method and application of activated carbon porous material loaded with organic molecular cage. The activated carbon porous adsorption material is obtained by using coconut shell or coal-based activated carbon with high specific surface area as a matrix, loading CC3 through an impregnation method or a chemical immersion method, uniformly dispersing the CC3 in and outside pores of the activated carbon, forming a microcosmic layer closely combined structure, and performing outstanding performance in application. In the field of gas adsorption, the activated carbon porous adsorption material is used for removing volatile organic pollutants (VOCs) such as ammonia, hydrogen sulfide, sulfur-containing and nitrogen-containing heterocyclic compounds and the like in industrial waste gas. Under the condition of a set adsorption device, the adsorption capacity is improved compared with pure activated carbon. The limitations of traditional activated carbon and CC3 used alone are overcome, and the activated carbon porous adsorption material has high adsorption capacity, good selectivity and stable and repeatable utilization. A simple, efficient and cost-controllable preparation method is given, and the activated carbon porous adsorption material is expanded in purification purposes in multiple fields, and has broad application prospects and significant practical value.

The invention provides a potato-tower-shaped nanofiber as well as a preparation method and application thereof, and belongs to the technical field of solid-phase microextraction. The preparation method of the potato-tower-shaped nanofiber comprises the following steps: mixing and dissolving a fiber-forming polymer, an amino precursor, a spinning aid and a solvent I to prepare an electrostatic spinning solution; preparing nanofibers by using an electrostatic spinning technology; the preparation method comprises the following steps: soaking nanofibers in water, and washing and drying after soaking; dissolving an aldehyde group precursor and a template agent into a solvent II to obtain a mixed solution, dipping the nanofiber into the mixed solution, adding a catalyst, and then performing solvothermal reaction to obtain the potato-tower-shaped nanofiber. A large number of uniformly-distributed and orderly-arranged sheet structures are inlaid on the surface of the nanofiber, and the whole fiber is in a potato tower shape; the potato-tower-shaped nanofiber has excellent extraction performance on a micro-plastic loaded plasticizer. The potato-tower-shaped nanofiber disclosed by the invention shows good application potential in the fields of sample pretreatment and solid-phase microextraction.

This invention provides a selective adsorption and efficient recovery process for fluorides in electrolytic aluminum flue gas based on high-efficiency activated carbon, relating to the field of electrolytic aluminum flue gas treatment technology. The process includes the following steps: Pretreatment-metal oxide loading-activation three-step process to prepare modified activated carbon with high selectivity for fluorides; filling the modified activated carbon into a multi-chamber fluidized bed adsorption tower, and using the waste heat from the electrolytic aluminum flue gas to heat the adsorption zone; This invention designs a three-step directional modification process of pretreatment-metal oxide loading-activation, using a mixed solution of dilute hydrochloric acid and hydrogen peroxide to remove impurities and expand pores in the activated carbon; loading Ce-Al binary metal oxides to endow the activated carbon with specific complexation adsorption capacity for fluorides; and then activation in a steam-nitrogen mixed atmosphere to optimize the pore structure, thereby improving the adsorption selectivity of the modified activated carbon for fluorides, extending the effective adsorption cycle of the adsorbent, and reducing the frequency of adsorbent replacement.

The invention discloses a preparation method of a macroporous magnesium-aluminum composite material, and belongs to the technical field of chemical engineering, and the method comprises the following steps: preparation of magnesium-aluminum sol, preparation of a first solution, preparation of a magnesium-aluminum dry gel film, preparation of a macroporous magnesium-aluminum composite material precursor and preparation of the macroporous magnesium-aluminum composite material. According to the invention, the alumina matrix is subjected to magnesium-aluminum coating modification, the pore structure of the magnesium-aluminum composite material is optimized, the surface acid-base property of the adsorbent material is improved by combining the modification of the organic ligand, and the adsorption selectivity of water vapor is greatly reduced while the structural stability of the material is ensured; the carbon dioxide can be efficiently captured in a high-water-vapor environment (such as air). The invention also discloses the macroporous magnesium-aluminum composite material prepared by the preparation method. Meanwhile, the invention further discloses application of the macroporous magnesium-aluminum composite material in the field of adsorption.

The application discloses a catalyst for biomass gasification hydrogen production, a preparation method of the catalyst and a hydrogen production method. The preparation method comprises the following steps: uniformly mixing a doping component A and a doping component B to obtain a material flow I; adding an anionic surfactant and a first precipitator into a calcium salt solution, controlling the pH of the system to be 8-9, and then uniformly mixing at 40-60 DEG C to obtain a material flow II; adding the material flow I, a second precipitator and a third precipitator into the material flow II, uniformly mixing at 70-80 DEG C to obtain a material flow III, and further performing heat treatment to obtain the catalyst. The application also provides the catalyst prepared by the above method and a hydrogen production method by biomass gasification. The application overcomes the densification problem of the adsorption and desorption process of the conventional calcium-based absorbent, and further realizes the double goals of biomass production of high-quality hydrogen and recycling of the calcium-based absorbent through matching of the double fluidized bed process.

The invention relates to the technical field of photocatalytic coatings, in particular to a nano photocatalytic coating for inhibiting peculiar smell adsorption, which comprises the following components: a visible light response type composite photocatalyst, an interface enhancer, a bonding reinforcement phase and a porous carrier material, through the synergistic effect of all the components, the coating achieves the integrated functions of adsorption, degradation and stabilization. The porous carrier material selectively adsorbs peculiar smell molecules and enriches the peculiar smell molecules on the surface of the coating, so that sufficient reactants are provided for photocatalytic reaction; the visible light response type composite photocatalyst efficiently degrades enriched odor molecules under visible light, so that adsorption saturation of the carrier is avoided, and cyclic regeneration of adsorption sites is realized; the interface reinforcer and the bonding reinforcement phase ensure the structural stability and the interface bonding force of the whole coating system, and ensure long-term effectiveness of adsorption and catalytic performance. Due to the synergistic effect, the peculiar smell adsorption inhibition rate and the degradation rate of the coating both reach 80% or above, and the coating also has excellent binding force and aging resistance.

The application discloses an intelligent integrated targeted plant powder adsorbent water purification system and method, and constructs a multi-unit cooperative intelligent treatment system to provide a water pollution treatment system and method which are exclusive, customized, green, repaired, efficient and economical.The plant powder adsorbent water purification system of the application provides a complete and efficient scheme design process for water pollution treatment.For different water areas with different pollution conditions, the system can adjust the most suitable plant powder adsorbent formula, and optimizes the design to improve the adsorption efficiency and realize the maximum economic benefit of the matching device.In addition, the water pollution treatment scheme provided by the system is dynamic, and the most suitable treatment scheme for the next stage can be recommended according to the change of the treatment progress.The application is designed and optimized in the aspects of scheme design, plant powder adsorbent ratio optimization, treatment equipment optimization, whole purification process supervision and dynamic adjustment, and is helpful to reduce the cost and difficulty of water pollution treatment and improve the treatment efficiency.

The application provides a composite porous fiber aerogel and a preparation method and application thereof, and belongs to the field of functional materials. Polyvinyl alcohol and sodium lignosulfonate are dissolved in water to obtain a PVA solution and an LS solution; the PVA solution and the LS solution are uniformly mixed in proportion to obtain a spinning dope; the spinning dope is atomized into droplets and sprayed into a uniform-speed stirring coagulation bath, so that the droplets form fibers under the stirring and drawing action of the coagulation bath, and solvent-non-solvent exchange and phase separation occur simultaneously to form nascent composite porous fibers; the nascent composite porous fibers are placed in a coagulation bath containing a crosslinking agent for crosslinking treatment and phase separation to obtain crosslinked composite porous fibers, and the crosslinked composite porous fibers are subjected to dispersion, freezing and freeze-drying treatment to obtain the composite porous fiber aerogel. The covalent compounding of polyvinyl alcohol and sodium lignosulfonate and the multi-level pore structure enable the composite porous fiber aerogel to have high adsorption capacity for positive proteins and excellent regeneration performance.

The utility model discloses a kind of elastic contact pads for wafer transmission, by setting vertically movable adjusting assembly and edge fixed, contact layer structure of detachable middle part, the controllable switching of contact state between contact layer and wafer is realized, in wafer transmission process, adjusting assembly is in first position, contact layer upper surface keeps plane and is completely contacted with wafer, can provide enough contact area and adsorption force, ensure that wafer does not slip, transmission is stable and reliable, after wafer transmission is in position, adjusting assembly moves to second position and lifts the middle part of contact layer, so that contact layer upper surface is changed into umbrella-shaped arc surface, its edge and wafer gradually peel off, to greatly reduce contact area, realize the easy release of wafer, simple structure, easy to process and use, different wafer transmission working condition can be dynamically adapted, with excellent anti-slip and anti-adhesion comprehensive performance.

This invention provides a solid-liquid composite adsorbent for carbon dioxide capture, its preparation method, and its application, specifically relating to the field of carbon dioxide capture materials technology. The solid-liquid composite adsorbent of this invention includes a shell and a core; the shell comprises hydrophobic SiO2 and hydrophobic modified biochar; the core is an acidic gas absorbent. This invention utilizes a unique solid-liquid structure to combine the high specific surface area and low corrosivity of the solid adsorbent with the high adsorption capacity and high selectivity of the acidic gas absorbent, thereby improving the adsorption capacity of the adsorbent; by using a hydrophobic solid particle shell to encapsulate the acidic gas absorbent core, the contact area between the acidic gas absorbent and the capture equipment is reduced, preventing corrosion of the equipment by the acidic gas absorbent. As shown in the examples, the solid-liquid composite adsorbent provided in this application has a CO2 adsorption capacity of 1.5–5 mmol / g.

The application belongs to the technical field of adsorbing materials, and particularly relates to an adsorbing material, a preparation method and application thereof, and a method for capturing low-concentration CO2 in air. The adsorbing material provided by the application comprises an adsorbing base and organic amine loaded on the surface of the adsorbing base; the adsorbing base comprises macroporous adsorbing resin, the pore volume of the adsorbing base is 0.3-0.9 mL / g, the specific surface area is 300-800 m 2 / g, and the average pore radius is 15-19 Å; the organic amine comprises polyethylene imine or polyethylene polyamine. The macroporous adsorbing resin with low price is used as a carrier to load the organic amine active component, so that the adsorbing capacity is improved and the cost of the adsorbing material is reduced. The adsorbing material provided by the application can efficiently adsorb low-concentration carbon dioxide in the environment in a humidified environment.

The application belongs to the technical field of lithium extraction, and particularly relates to a titanium-based lithium extraction adsorbent and a preparation method and application thereof. The preparation method provided by the application comprises the following steps: a) mixing and grinding a lithium compound, a titanium compound, a zirconium compound, a niobium compound, an iron compound, a pore former and water, and drying to obtain a mixed powder; b) placing the mixed powder in a calcination device, first heating from ambient temperature to a first temperature at a first heating rate, then heating from the first temperature to a second temperature at a second heating rate, and calcining at the second temperature to obtain a precursor powder; c) granulating the precursor powder to obtain activated adsorbent particles; and d) placing the activated adsorbent particles in an acid solution for activation treatment to obtain the titanium-based lithium extraction adsorbent. The preparation method provided by the application can improve the adsorption capacity, ion selectivity and structural stability of the lithium extraction adsorbent, reduce the solution loss of the lithium extraction adsorbent, and prolong the service life of the lithium extraction adsorbent.

The application discloses a preparation method of a lithium extraction adsorption membrane based on electrostatic spinning, and the method comprises the following steps: loading metatitanic acid lithium on polyacrylonitrile by using electrostatic spinning technology to obtain a polyacrylonitrile electrostatic spinning membrane loaded with metatitanic acid lithium; and then performing pickling in a forced flow-through mode to effectively convert the metatitanic acid lithium into metatitanic acid, thereby obtaining the lithium extraction adsorption membrane based on electrostatic spinning. The metatitanic acid lithium is prepared by calcining Li2CO3 and TiO2 at high temperature. The method provided by the application fixes the powder-shaped titanium-based lithium ion sieve on the polyacrylonitrile fiber by using the electrostatic spinning and the forced flow-through pickling mode. Compared with the prior art, the lithium extraction adsorption membrane based on electrostatic spinning prepared by the method provided by the application has higher adsorption capacity and faster adsorption rate, and is convenient for industrial application.

The invention relates to the technical field of soil remediation, in particular to a soil remediation agent for petroleum-contaminated soil and a preparation method of the soil remediation agent, and aims to solve the problem that existing petroleum-contaminated soil is difficult to naturally remedy. According to the preparation method, the polluted soil is repaired by utilizing a bioremediation method, the advantages of high efficiency, good effect and small environmental damage are achieved by adding florae into the polluted soil to remove petroleum hydrocarbon pollutants, the candida tropicalis and the streptococcus faecalis are adopted for composite treatment, the candida tropicalis has the advantages of high permeability resistance, acid resistance and high metabolism efficiency of fungi, and the streptococcus faecalis and the candida tropicalis have the advantages of being high in metabolism efficiency. Streptococcus faecalis can be degraded by the petroleum hydrocarbon, pseudomycelium and spores can be generated, an extended network structure is formed in soil and can be used as a channel for bacterial migration, bacterial migration is facilitated, the treatment effect on pollutants is improved, streptococcus faecalis can grow in the environment with the petroleum hydrocarbon, the degradation effect on the petroleum hydrocarbon is good, and the degradation effect on the petroleum hydrocarbon is good. By compounding the two components, a good biodegradation effect can be achieved.

The invention provides a sulfur-doped MXene hydrogel adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: dispersing MXene in deionized water, adding a sulfur source, carrying out an ion exchange reaction, and after the reaction is finished, carrying out centrifugal separation, washing and drying to obtain sulfur-doped MXene; the preparation method comprises the following steps: dissolving an acrylic monomer in deionized water, adding a cross-linking agent and an initiator, and uniformly mixing to obtain an acrylic acid prepolymerization solution; and dispersing the sulfur-doped MXene in deionized water, adding an acrylic acid prepolymerization solution, uniformly stirring, and carrying out polymerization reaction to obtain the sulfur-doped MXene hydrogel adsorbent. According to the preparation method, MXene is doped with sulfur, and additional adsorption sites are introduced, so that the adsorption capacity of cesium ions can be remarkably improved. As a carrier, the acrylic acid-based hydrogel can improve the dispersibility and stability of MXene in water and enhance the mechanical strength of the material.