173 results about "Carbonate minerals" patented technology

The invention provides a high-precision recovery method and system for judging the sedimentary environment of marine facies mixed-volume shale, which is characterized in that on the basis of microscopic slice fine identification, the types of minerals in a sample are preliminarily identified by XRD (X-Ray Diffraction), the mineral color change under a cathode luminescence test is combined, and the mineral composition is analyzed by XRD; three main end members of carbonate minerals, clay minerals and siliceous minerals are used for triangular projection so as to identify main lithofacies types of the mixed-volume shale and plane distribution characteristics of various lithofacies; through TOF-SIMS, micro-area mineral composition and micro-area element change identification in the mixed shale is carried out, and a biomarker compound in organic geochemistry is used for sedimentary environment identification, so that sedimentary environment change corresponding to complex lithofacies change of the mixed shale is identified, and the formation mechanism of the mixed shale is clarified.

The invention relates to a method and equipment for preparing a deacidification agent from household garbage incineration fly ash, and the method comprises the following steps: primary conversion: converting various minerals in the household garbage incineration fly ash into metal carbonate minerals; secondary conversion: converting the obtained metal carbonate minerals into corresponding metal oxides to obtain a high-alkalinity deacidification agent; and optionally, performing three-stage conversion before deacidification application, and hydrating the metal oxide to obtain a deacidification agent with high activity; wherein the household garbage incineration fly ash is generated by performing deacidification treatment on household garbage incineration flue gas; the primary conversion is carried out in an aqueous solution, and a conversion reagent contains water-soluble carbonate and / or water-soluble bicarbonate; the secondary conversion is carried out at a temperature of more than 700 DEG C. According to the method, harmlessness, reduction and recycling of the household garbage incineration fly ash are achieved, environmental release and ecological burden of toxic and harmful substances are prevented, and the technical economic feasibility is good.

vertical regenerative parallel-flow kiln comprising at least two vessels (1,2) interconnected by a gas transfer channel (3), each vessel comprising, in the in-service or out-of-service position, a loading inlet (5) for carbonate mineral rock at the top of the vessel, means for firing the rock, a discharge outlet (8) for the decarbonated calcined material produced at the bottom of the vessel, a cooling air inlet (7) at the bottom of the vessel for counter-cooling the calcined material produced, and a central collecting element (21) having, at its upper end, a collection opening (24) for the cooling air heated by the calcined material and, at its lower end, an extraction outlet (22), each vessel further comprising a protective cap-shaped element (25) which is fixed in the vessel in a position independent of the central collecting element (21),by covering and surrounding its upper end down to a level lower than the harvest opening (24), so as to leave, between this upper end and the cap (25), a free passage for the collection of heated cooling air through the harvest opening (24).

The invention provides a method for dechlorinating waste incineration fly ash and mineralizing carbon dioxide. The method provided by the invention comprises the following steps: S1, mixing the waste incineration fly ash with water, and carrying out first water washing treatment to obtain first water-washed fly ash; and S2, under the condition that gas containing carbon dioxide is introduced, mixing the first water washing fly ash obtained in the step S1 with water, and carrying out second water washing synergistic carbonization treatment to obtain a dechlorinated carbonization product. According to the method, the waste incineration fly ash serves as a mineralization material, CO2 in the industrial flue gas is absorbed and converted into stable carbonate minerals, meanwhile, deep removal of chlorine salt is achieved, and a new technical direction is provided for recycling of the waste incineration fly ash and carbon reduction of the industrial flue gas.

The invention relates to the technical field of microbial carbon sequestration, in particular to novel paenibacillus GD-2 and application thereof in carbon sequestration. The preservation number of the paenibacillus GD-2 disclosed by the invention is CGMCC (China General Microbiological Culture Collection Center) No. 31835. The paenibacillus GD-2 provided by the invention is a potential new strain in paenibacillus separated from fixed inter-plate soil in a salinization photovoltaic field area, has dual carbon sequestration capability, can convert carbon dioxide in the atmosphere into carbonate minerals, can grow by converting the carbon dioxide into own biochar (organic carbon), and has the advantages of being simple in preparation process and low in cost. The strain can grow under the condition that only atmospheric carbon dioxide is contained, meanwhile, the growth rate of the strain can be remarkably improved through NaHCO3, an external carbon source and an electron donor are not needed, the carbon sequestration cost is reduced, and the strain has important significance for improving the soil carbon sequestration and sink increasing potential, promoting high-quality development of the photovoltaic industry in a salinization fragile area and relieving global climate warming.

The invention relates to the technical field of carbon sequestration and hydrogen production, and discloses a carbon sequestration and hydrogen production method and a carbon sequestration and hydrogen production device combined with new energy surplus electric power, and the carbon sequestration and hydrogen production method combined with new energy surplus electric power comprises the following steps: regulating and controlling the temperature and pressure of a geological reaction ore bed; carrying out degassing treatment on the water to obtain degassed water; injecting a mixed solution of carbon dioxide and the degassed water into the geological reaction ore bed; carrying out carbon dioxide mineralization storage and hydrogen production reaction to obtain carbonate minerals and hydrogen; purifying the hydrogen to obtain purified hydrogen; the new energy surplus electric power is used for providing driving force for the carbon sequestration hydrogen production method. The carbon sequestration and hydrogen production method is high in reaction efficiency and reaction rate, not only assists carbon dioxide emission reduction, but also can obtain high-purity hydrogen, can also consume new energy surplus electric power, and has both environmental protection and resource utilization values.

The invention belongs to the technical field of coal mine underground carbon dioxide emission reduction, and relates to a mine CO2 direct capture-geological utilization-mineralization storage integrated method which comprises the following steps: firstly, arranging a CO2 gas concentration and air quality monitor in a return airway, collecting environmental data and transmitting the environmental data to an interactive computer for analysis; according to a set threshold value, a self-adaptive early warning device sends out a signal, CO2 is sucked in at the end of a return airway, and liquid CO2 is prepared in real time through reaction, purification and pressurization; the supercritical CO2 is used for preventing and treating coal and gas outburst disasters, and the liquid CO2 is used for preventing and treating goaf fire disasters to realize geological utilization; finally, gangue is intelligently recognized and grabbed to generate carbonate minerals with CO2, the carbonate minerals are evenly mixed with other materials, a paste filling material is obtained, and the paste filling material is conveyed to a goaf through a grouting high-pressure pipeline to be mineralized and sealed. The invention relates to a CO2 direct capture, geological utilization and mineralization storage integrated method, which effectively reduces the carbon emission in the coal mine production process.

The invention discloses low-carbon high-strength concrete and a preparation method thereof, the concrete comprises the following components in parts by weight: 0-150 parts of cement, 150-200 parts of fly ash, 150-200 parts of blast furnace slag, 70-100 parts of silica fume, 10-20 parts of nano MgO, 700-850 parts of sand, 900-100 parts of stone, 9-15 parts of a water reducing agent, 1-5 parts of diethanol isopropanolamine and 95-105 parts of water, the sand is composed of sand with the particle size of 1.25-5 mm and sand with the particle size of 0-1.25 mm, and the low-carbon high-strength concrete is obtained through CO2 curing. Through reuse of the machine-made sand and the natural sand and the synergistic effect of the nano MgO and the diethanolisopropanolamine, the hydration reaction and the pore structure are optimized, the strength and durability are improved, and the cement consumption is reduced; meanwhile, CO2 is converted into carbonate minerals by combining a carbon capture technology, so that the carbon emission is further reduced, and the performance is enhanced; the concrete quality is guaranteed, meanwhile, economic benefits and environmental value are achieved, and the method is suitable for green building engineering.

The invention provides a method for measuring gold distribution in high-carbon ore, and relates to the technical field of mineral processing and mineral content measurement, and the method comprises the following steps: 1) preparing an experimental sample; 2) preparing an electronic probe sample and an MLA sample; (3) quantitatively analyzing the types of the carbon minerals and the content of carbon in the minerals by using an electronic probe; (4) measuring the content of carbonate minerals and the content of other minerals through MLA qualitative analysis; (5) determining the content of monomers and continuous gold; 6) determining the gold content in the carbonate mineral; (7) determining the gold content in the metal mineral; and 8) determining the content of gold in silicate neutralized organic carbon. The determination method is simple, convenient to operate and short in time consumption, and a basis can be quickly provided for selection of a mineral separation process method and flow. The measurement method is based on calculation of the raw ore grade, errors caused by different treatment slag grades in all intermediate processes are avoided, secondary correction of mineral content data can be carried out in the measurement process, and the precision and accuracy are remarkably improved.

The invention relates to an evaluation and optimization method for continental shale oil dessert intervals, which comprises the following steps: calculating an oil production evaluation coefficient of each sample according to the organic carbon content and petroleum potential parameters; calculating a reservoir evaluation coefficient of each sample according to the shale porosity; calculating an oiliness evaluation coefficient of each sample according to the free oil quantity; calculating a compressibility evaluation coefficient of each sample according to the quartz content, the carbonate mineral content and the clay mineral content; calculating the shale oil dessert layer segment coefficient of each sample according to the oil-generating property evaluation coefficient of each sample, the storage property evaluation coefficient of each sample, the oiliness evaluation coefficient of each sample and the compressibility evaluation coefficient of each sample, and performing data distribution proportion analysis on the shale oil dessert layer segment coefficients of all the samples in the plurality of samples to obtain the shale oil dessert layer segment coefficient of each sample. And determining an evaluation grading standard to complete well drilling shale oil dessert interval evaluation optimization, so that technical support can be provided for realizing high yield and stable yield of a shale oil well.

The invention discloses a shale gas exploration method, device, equipment and medium, and relates to the technical field of shale gas exploration and development, and the shale gas exploration method comprises the following steps: obtaining respective mass fractions of long quartz minerals, clay minerals and carbonate minerals of a shale reservoir in each well section of a current well, determining the maximum difference degree index, the local onrush characteristic index and the relative change amplitude index of the corresponding mineral content of the shale reservoir in each well section based on each mass fraction, and constructing a comprehensive heterogeneity index representing the shale reservoir in each well section; the porosity, the water saturation and the total gas content of the shale reservoir in each well section are obtained, so that the initial sweet spot grade of each well section is divided; performing grade correction on the initial dessert grade of the corresponding well section according to each comprehensive heterogeneity index to obtain a target dessert grade corresponding to each well section after correction; and determining a well track optimization scheme and a fracturing design scheme based on the target dessert grade so as to carry out corresponding shale gas exploration operation. And accurate shale gas exploration is realized.

A treatment agent for acidic fluorine-containing wastewater and a method for using the same. The treatment agent for acidic fluorine-containing wastewater of the present invention comprises an agent A and an agent B; the agent A comprises carbonate minerals and silicate minerals; the agent B is mainly aluminum salt. The method for using the treatment agent for acidic fluorine-containing wastewater of the present invention comprises the following steps: (1) pretreatment: sedimentation filtration to remove suspended solids; (2) pH adjustment: adding agent A to the acidic fluorine-containing wastewater to make the solution pH 6.5-7.5; (3) coagulation precipitation: adding agent B to the solution, standing and precipitating after reaction, and the supernatant is discharged. The use of the treatment agent for acidic fluorine-containing wastewater of the present invention can effectively improve the acid-base buffering capacity of the water quality, and spontaneously stabilize the pH to 6.5-7.5, with high fluorine removal efficiency. It can also improve the sedimentation efficiency of the fluorine removal alum flower, avoid the use of polyacrylamide, and the treatment process is simple and low-cost.

The invention relates to an identification method and system for a hydrothermal alteration zone in carbonate rock construction, and belongs to the field of remote sensing geological prospecting, and the identification method comprises the steps: obtaining and preprocessing a spaceflight hyperspectral remote sensing image of a to-be-identified region, and obtaining surface reflectance data; mineral component analysis is carried out based on the surface reflectance data, carbonate mineral dominant pixels are marked, and a binary mask array after assignment is generated; extracting hydrothermal alteration information and generating an information intensity array according to the assigned binary mask array; performing binarization processing on the information intensity array according to a preset threshold value to generate a binary logic array; and converting the binary logic array into a geographic space vector area file based on an original image geographic coordinate system, and taking the geographic space vector area file as a hydrothermal alteration zone identification result. According to the method, rapid and accurate identification of the hydrothermal alteration zone in the carbonate rock area can be facilitated.

The invention belongs to the technical field of oil and gas field development, and particularly discloses a reservoir fracturing fluid gel breaker concentration optimization method which comprises the following steps: (1) selecting a representative core of a reservoir, measuring the volume fraction phi of carbonate minerals, and determining the maximum crack width d and the fracturing fluid action depth h; (2) preparing fracturing fluid with the volume of V, adding calcium carbonate powder with the mass of m g, adding gel breakers with different concentrations, and heating to the reservoir temperature; (3) carrying out thorough gel breaking at the reservoir temperature, and filtering a gel breaking solution; and (4) selecting the concentration range of the gel breaker according to the relationship between the concentration of the gel breaker and the relative molecular mass, the residue amount, the residue particle size and the sugar content of the filtrate of the degradation product of the gel breaking liquid. The relationship between the concentration of the gel breaking solution and the relative molecular mass distribution of the degradation product of the gel breaking solution, the sugar content of the filtrate and the residue content is established by considering the carbonate mineral content of the reservoir, the gel breaking performance of the gel breaker is analyzed more comprehensively, and the requirement for the performance of the gel breaking solution at present is met.

The invention discloses an alkaline solid waste mineralization test device, which comprises a support frame, a reaction kettle, a stirring shaft, a gas inlet pipe and a gas outlet pipe, the reaction kettle is arranged on the support frame, the reaction kettle comprises a kettle cover and a kettle body, the kettle cover detachably covers the kettle body, a discharge pipe is arranged at the bottom of the kettle body, and the gas outlet pipe is arranged on the bottom of the kettle body. The stirring shaft is arranged in the kettle body, stirring blades positioned in the kettle body are arranged on the stirring shaft, the gas inlet pipe is arranged on the reaction kettle and is communicated with the reaction kettle, a first flow meter is arranged on the gas inlet pipe, the gas outlet pipe is arranged on the reaction kettle and is communicated with the reaction kettle, and a second flow meter is arranged on the gas outlet pipe. According to the alkaline solid waste mineralization test device, carbon dioxide is converted into stable carbonate minerals through alkaline solid waste mineralization reaction, CO fixation and emission reduction are achieved, the test device can research the carbon sequestration peak value of mineralization of different alkaline solid wastes, the mineralization process is optimized, and the carbon sequestration capacity is improved.

Method for calcining carbonate mineral stones in a parallel flow regenerative kiln wherein through said connecting channel, where a mixing gas stream is injected through a series of mixing gas entry means at high velocity in such a way that a ratio of momentum J between each gas stream and the combustion fumes is higher than 1, forming combustion fumes depleted in CO exiting the connecting channel.

To provide: a production method for powder having reduced specific surface area which enables the powder having reduced specific surface area to be easily produced; and a powder production device.SOLUTION: A production method for powder having reduced specific surface area includes: a reaction step of supplying gas G containing carbon dioxide to a solution 3 containing a metal ion to react the metal ion and a carbonate ion to produce an intermediate 7; and a separation step of separating the intermediate 7 from the solution 3 to produce carbonate mineral powder 2 which is powdered. During the reaction step, a surfactant S for reducing specific surface area of the intermediate 7 is added to the solution 3.SELECTED DRAWING: Figure 1

Methods for increasing the mechanical strength of subterranean formations using MXene-containing fluids may include introducing a plurality of MXene flakes into a subterranean formation comprising a carbonate mineral; and depositing at least a portion of the MXene flakes upon a surface of the carbonate mineral, within a plurality of pores of the carbonate mineral, or any combination thereof to increase a mechanical strength of the carbonate mineral.

The application discloses a kind of mixed mineral materials and methods for promoting long-term storage of sediment organic carbon, the material is composed of a certain proportion of serpentine and magnesite, steps are: 1) select mineral material serpentine and magnesite as raw material;2) serpentine and magnesite are pretreated;3) the serpentine and magnesite after pretreatment are mixed according to certain proportion;4) the mixed mineral material is spread to sediment surface with certain thickness;5) through the reaction of mixed mineral material and sediment organic carbon to generate stable magnesium carbonate mineral, realize long-term storage of sediment organic carbon in situ.The mineral material in the application has the characteristics of environmental friendly, reasonable formula, convenient to use, ecological environmental protection and the like.The application realizes long-term storage of sediment organic carbon in situ by the reaction of mixed mineral material and organic carbon, provides new ideas for water ecological restoration engineering to help carbon neutralization and realize sediment in situ carbon storage.

According to the carbonate rock rare earth element content in-situ analysis method and device, carbonate rock samples are obtained, and the carbonate rock samples are from various rock forms or components; carrying out sample pretreatment on the carbonate rock sample to obtain a to-be-analyzed sample; detecting the calcium element content and the magnesium element content of the sample to be analyzed; detecting the contents of main trace elements and rare earth elements of a single carbonate mineral on the to-be-analyzed sample; and by taking the calcium element content as an internal standard, carrying out data processing on the main trace and rare earth element content of the single carbonate mineral to obtain the rare earth and yttrium element content of the single carbonate mineral. Therefore, the accurate original deposition signal of the carbonate rock sample is obtained, and the accuracy of the environmental condition and the geological history when the reconstructed sediment is formed is improved.

The invention provides a method and a device for extracting soluble organic matters of a carbonate reservoir, and the method for extracting the soluble organic matters of the carbonate reservoir comprises the following steps: extracting a reservoir rock sample with a first mesh number to obtain free-state soluble organic matters and first residual substances of the reservoir rock sample; crushing the first residual substance to a second mesh number, and removing carbonate minerals in the first residual substance; extracting the first residual substance from which the carbonate minerals are removed so as to obtain bound-state soluble organic matters and second residual substances of the reservoir rock sample; crushing the second residual substance to a third mesh number to destroy reservoir rock particles of the reservoir rock sample; and extracting the second residual substance crushed to the third mesh number to obtain the inclusion soluble organic matter. According to the method, carbonate reservoir rocks with different granularities are extracted for multiple times to obtain soluble organic matters in different occurrence states, and the soluble organic matters are compared with hydrocarbon source rocks in characteristic to judge the oil and gas filling period.

The invention discloses a method for mineralizing, reinforcing and protecting weathered sandstone cultural relics through carbon sequestration bacteria, and belongs to the technical field of cultural relic protection and restoration. In order to solve the problems of residue of deliquescent anionic salt and generation of bad byproduct ammonia gas in the existing technology for reinforcing and protecting sandstone cultural relics by microbial mineralization, the reinforcing depth and strength are improved in a lower-carbon and higher-efficiency manner, and an aspartic acid chelated calcium liquid containing low-solubility active magnesium oxide is effectively permeated into weathered sandstone; the carbon capture and nucleation effects of the bacillus mucilaginosus with the carbon sequestration function are utilized, on one hand, carbon dioxide in air is captured and converted into carbonate needed by mineralization, on the other hand, carbonate in an ammonium carbonate solution which is easy to volatilize and decompose is locked and used for carbonate mineral crystallization, and meanwhile ammonium ions are inhibited from being converted into ammonia gas to overflow; calcium carbonate and basic magnesium carbonate are induced to be subjected to intercrystallization nucleation, and a high-strength cementation structure is formed in pores of the weathered sandstone and is used for permeating, reinforcing and protecting the weathered sandstone cultural relics.

Method and kiln for calcining carbonate mineral stones in a rectangular shaft parallel flow regenerative kiln (PFRK) in common conditions of combustion, with improved extraction of cooling gas.

Method for calcining carbonate mineral stones in a parallel flow regenerative kiln wherein the method comprises an extraction step of the heated cooling gas through a series of extracting port located in an effective cooling zone within a cooling zone below a connecting channel, said heating cooling gas enters into an implementation port orifice and passes into a port duct to reach an evacuation element at an average extraction velocity comprised between 0.5 and 5 m / s.

The invention relates to a regenerative parallel-flow vertical shaft furnace comprising at least two shafts (1, 2) interconnected by a gas transfer channel (3), each of the shafts comprising, in the active or inactive position, a charging inlet (5) for charging a carbonate mineral rock at the top of the shaft, means for firing the rock, an outlet (8) for discharging the decarbonated produced calcined material at the bottom of the shaft, a cooling air inlet (7) at the bottom of the shaft for countercurrent cooling of the produced calcined material, and a central collecting element (21) that has, at its upper end, a collection opening (24) for collecting the cooling air heated by the calcined material and, at its lower end, an extraction outlet (22), each shaft further comprising a hat-shaped protective element (25) that is fixed in the shaft in a position independent of the central collecting element (21), which element covers and surrounds the upper end thereof to a level lower than the collection opening (24) so as to leave, between this upper end and the hat-shaped element (25), a free passage for collecting the heated cooling air through the collection opening (24).

The invention discloses a mixed mineral material and method for promoting long-term storage of sediment organic carbon, the material is composed of serpentine and magnesite according to a certain proportion, and the method comprises the following steps: 1) selecting mineral materials serpentine and magnesite as raw materials; (2) pretreating the serpentine and the magnesite; 3) uniformly mixing the pretreated serpentine and magnesite according to a certain proportion; 4) spreading the mixed mineral material on the surface of the sediment by a certain thickness; and 5) reacting the mixed mineral material with the sediment organic carbon to generate a stable magnesium carbonate mineral so as to realize in-situ long-term storage of the sediment organic carbon. The mineral material has the characteristics of environment friendliness, reasonable formula, convenience in use, ecological environment friendliness and the like. According to the method, in-situ long-term sequestration of the sediment organic carbon is realized through reaction of the mixed mineral material and the organic carbon, and a new thought is provided for assisting carbon neutralization and realizing in-situ carbon sequestration of the sediment in water ecological restoration engineering.

The present invention concerns an industrial chemical process (400f) and an apparatus for carrying out that process. The chemical process integrates into a single, combined method: (i) a method (303, 304) of producing iron and / or manganese from their ores, and (ii) a method (205a, 205b, 207, 208, 209) of producing an oxide or hydroxide of at least one of calcium, magnesium and iron from another ore respectively comprising a carbonate mineral of at least one of calcium, magnesium and iron. This combined method has the iron and / or manganese ore and the other ore comprising the carbonate mineral as its only essential ingredients, with common salt and / or water as optional extra ingredients. The combined method produces iron and / or manganese in elemental form, an oxide or hydroxide derived from the carbonate mineral, and oxygen as its corresponding products. If the iron and / or manganese ore also comprises a siliceous mineral, the method may also produce an alkaline mixture comprising sodium silicate as a co-product. Salt and water act as intermediaries to produce these end-products, but are only consumed if supplied in excess. An amount of sodium oxide, hydroxide and / or carbonate determined by the amount of salt consumed may be produced as a co-product, along with a corresponding amount of at least one of chlorine and hydrochloric acid. An amount of hydrogen determined by the amount of water consumed may also be produced as a co-product, along with an increased amount of oxygen. The iron, manganese and oxygen produced may all be used in steelmaking. Any excess oxygen may be safely vented to atmosphere. The oxide or hydroxide derived from the carbonate mineral may be used in cement manufacture, as a flux in steelmaking and / or as an ingredient in the manufacture of soda-lime glass. The alkaline mixture comprising sodium silicate may be used as an alkaline activator for an alkaline activated or geopolymer cement. The sodium carbonate may be used in the manufacture of soda-lime and / or borosilicate glass, for example. The chlorine and / or hydrochloric acid may be used in the manufacture of chlorinated organic compounds, for example. The hydrogen may be used as a fuel in a hydrogen economy. The method of the invention requires no nett input of heat because the chemical reactions it involves are exothermic overall. It also consumes no fossil fuels and has electricity as its only energy requirement. Thus if the electricity is produced from a source of renewable energy, this method produces no greenhouse gas emissions. In some embodiments, the method can even have a negative carbon footprint overall. The invention is intended to replace existing techniques for producing iron and / or manganese from their ores, including hydrogen-DRI, the calcination of limestone and other carbonate minerals, both in cement manufacture and in the production of lime for other purposes, and the ammonia-soda, or Solvay, process for the production of sodium carbonate. The invention therefore has the potential to eliminate up to about 20% of anthropogenic carbon dioxide emissions. [Fig. 9B]

A product-activity-tunable method for calcining a carbonate mineral, relating to a method for calcining a carbonate mineral. In the present invention, two stages of reactions (i.e., a carbonate decomposition reaction and a product high-temperature sintering reaction) of a carbonate calcination process are separated in two reactors, i.e., a carbonate decomposition reactor and an activity tunning reactor, and the activity of products is flexibly regulated and controlled by respectively controlling the reaction conditions of the two reactors, thereby achieving co-production of multiple active products, and solving the problems of traditional production technologies, e.g., single product activity and limited product application. In addition, high-temperature flue gas from the activity tunning reactor is used as a heat source for the carbonate decomposition reactor, achieving efficient cascade utilization of energy in a system, and achieving significant energy saving and consumption reduction effects. In addition, the production process takes only a few seconds to a few minutes, the system processing capacity is high, and large-scale industrialization is easy to achieve.

The application of geocatalysts in controlling CO2 capture processes in situ as well as in a reaction vessel, chamber or tower is described. More specifically, a process for controlling the reaction of a CO2-containing gas stream with one or more starting materials selected from waste building material, mineral, rock, sand, amorphous material or combinations thereof is disclosed: wherein said starting material comprises Si and / or Al, and one or more divalent cation(s), water, and one or more organic compound(s) to control the reaction: thereby providing a product comprising: at least one carbonate mineral and preferably colloidal silica.

The invention discloses a pressure-boosting microbial capillary crystalline type negative pressure anti-seepage device, and relates to the technical field of wall surface repairing, the pressure-boosting microbial capillary crystalline type negative pressure anti-seepage device comprises a body mechanism, the body mechanism comprises a guide rail frame, a treatment mechanism is arranged on the front surface of the guide rail frame, and the treatment mechanism comprises a pressurizing unit which is located on the front surface of the guide rail frame; the pressurizing unit is used for supplementing a carbon source to the sprayed microorganism slurry; the treatment mechanism further comprises a curing unit located on the front face of the guide rail frame, the pressurizing unit and the curing unit are used in cooperation, and the curing unit is used for improving the biological activity of microorganisms. According to the device, after microbial mortar is sprayed through the spraying mechanism, the water seepage wall surface is locally covered through the pressurizing disc, so that a carbonization reactant source is supplemented in time, more sedimentary carbonate mineral crystals are generated, and the anti-seepage plugging effect of the water seepage wall surface is improved.