10results about How to "Improve carbon sequestration performance" patented technology

This invention provides a method for microalgae to fix carbon dioxide under high-mineralization and high-temperature environments, belonging to the field of microalgae cultivation and carbon neutrality technology. The carbon dioxide fixation method includes the following steps: S1: Constructing a carbon fixation culture system using ammonium sulfate as the sole nitrogen source; S2: Introducing microalgae into the carbon fixation culture system for cultivation at a temperature of 20-43℃; S3: Passing carbon dioxide-containing flue gas into the carbon fixation culture solution, and collecting the microalgae biomass after cultivation to fix carbon dioxide. This invention can improve the stress resistance and carbon fixation performance of microalgae under high-mineralization and high-temperature environments, is suitable for the synergistic treatment of high-mineralization water bodies and high-carbon dioxide concentration flue gas in power plants, and has low treatment costs, is easy to operate, and has broad application prospects.

The application discloses a CO2 storage carrier, a preparation method and a device, which comprise the following components in percentage by mass: quartz: 30.10-40.45%, borax: 8.75-14.3%, calcium oxide: 5.13-7.20%, magnesium oxide: 5.50-7.52%, sodium carbonate: 1.87-3.47%, sodium sulfate: 0.12-0.53%, sodium phosphate: 0.23-0.82%, a stable dispersing agent: 0.06-0.33%, a surfactant: 0.02-0.13%, and water: 35-45%. The application comprises the following steps in the preparation: (1) preparing a slurry; (2) preparing a CO2 storage carrier precursor; and (3) preparing the CO2 storage carrier. The CO2 storage carrier provided by the application can wrap carbon dioxide gas inside, can realize carbon storage, and can help realize the vision of carbon neutrality as soon as possible.

The application discloses a high-efficiency carbon fixation microalgae breeding device, and relates to the technical field of carbon fixation microalgae breeding.The device comprises an elongated pool, a partition plate is arranged at the middle position of the elongated pool, so that a loop-shaped channel in the shape of a long strip is formed in the elongated pool, bottom plates are arranged in the two parallel straight channels of the loop-shaped channel, the upper surfaces of the bottom plates are arranged in an inclined manner, and the inclined directions of the two bottom plates are opposite.Two liquid lifting mechanisms are arranged at the high end positions of the two bottom plates respectively, and are used for lifting the algal liquid in the loop-shaped channel to the high end of the bottom plate, so that the algal liquid flows downward along the upper surface of the bottom plate automatically.Two groups of disturbance mechanisms are arranged on the upper surfaces of the two bottom plates.The algal liquid is driven to form a turbulent state by the bidirectional inclined bottom plates, the liquid lifting mechanism and the disturbance mechanism, the problems of surface light inhibition and bottom dark area are reduced, and the light energy utilization efficiency of the microalgae is improved significantly.

The present application relates to a kind of preparation of nanometer SiO2 / CaSiO3 Composite material using electroplating sludge and its carbon dioxide mineralization process. Nanometer SiO2 / CaSiO3 Composite material is prepared by using carbon dioxide assisted precipitation method and solid phase mixing method, realizes the high-value resource utilization of electroplating sludge, and optimizes the carbon fixation performance of CaSiO3. The carbon dioxide mineralization process provided in the present application is under lower temperature and pressure conditions, by water vapor wetting nanometer SiO2 / CaSiO3, so that carbon dioxide is quickly mineralized into stable carbonate, thereby realizing efficient capture and storage of carbon dioxide. The process is simple in operation, low in energy consumption and uses only a small amount of water, does not cause secondary pollution, is green and environmentally friendly, low in cost, suitable for large-scale development and application.

The invention discloses a low-carbon high-efficiency artificial purification wetland system. The low-carbon high-efficiency artificial purification wetland system comprises a sedimentation tank, a percolation dam, an aeration tank, a primary submerged plant tank and a secondary submerged plant tank which are sequentially communicated through water channels. According to the method, the wetland carbon sequestration capability, the purification efficiency and the economic benefit are improved by preparing the aquatic plants which grow fast and are high in economic benefit. Solar energy is adopted, carbon emission is reduced, an aerator is arranged, dissolved oxygen of a water body is increased, emission of wetland greenhouse gas methane is reduced, and the purification efficiency is also improved. By optimizing the configuration of the wetland structure, the physical effects of precipitation, filtration, adsorption and the like are enhanced, the absorption and utilization of plants and the decomposition of microorganisms are enhanced, and the purification efficiency of the wetland is improved.

The application belongs to the field of soil improvement, and relates to a method for applying a modifier for soil acidification in southern forests, by which goethite as a mineral modifier can effectively increase soil pH, adjust soil acidity, improve soil carbon sink capacity, comprehensively improve the plant habitat, and further promote plant growth, so as to simultaneously realize soil habitat improvement and ecological function improvement of the southern forests.

The invention discloses an active cementing material based on aluminum-carbon synergistic reaction and a preparation method thereof. The preparation method comprises the following steps: mixing a calcium-based solid waste material with a regulating agent solution to form mixed slurry; introducing industrial tail gas containing CO2 into the mixed slurry, reacting for 30-180 minutes at the temperature of 25-100 DEG C, carrying out carbonization treatment, and then carrying out solid-liquid separation and drying dehydration to obtain an active carbonate admixture; mixing the active carbonate admixture with a volcanic ash material and ordinary Portland cement, and adding water to prepare an active cementing material with aluminum-carbon synergistic reaction; aiming at the problems in the prior art, an aluminum-carbon synergistic reaction is introduced to realize synchronous proceeding of carbonate mineralization and aluminate activation, a compact and continuous skeleton structure is constructed, the early and later compressive strength of the cementing material is remarkably improved, and meanwhile, resource utilization of industrial solid wastes such as the steel slag, the red mud and the waste concrete can also be realized.

The invention discloses an agriculture and forestry compound management method with eucalyptus and commercial crops as main components, and the method specifically comprises the following steps: S1, forest land site selection and pretreatment: selecting a laterite / laterite forest land with the altitude less than or equal to 800m and the PH value of 4.5-6.5, and relates to the technical field of agriculture and forestry compound management. According to the agriculture and forestry composite management method with eucalyptus and commercial crops as main components, medicinal plants such as honeysuckle, rhizoma polygonati and anoectochilus formosanus are accurately matched according to microenvironment characteristics of eucalyptus in different growth stages, the content of effective components of various medicinal materials is remarkably increased by combining a medicinal component directional regulation and control technology, and the effective components meet the high-quality standard of pharmacopoeia; compared with a traditional mode, the annual average yield per mu income of medicinal plants and the land resource utilization rate are greatly improved, the nutrient requirements of eucalyptus in all growth stages are met through intelligent drip irrigation and staged water and fertilizer management, the application of biological bacterial fertilizer and organic fertilizer is matched, the soil structure is effectively improved, the eucalyptus growth speed and the wood yield are remarkably improved, and the phenomenon of small old trees is avoided.

This invention relates to the field of wetland ecological restoration technology, and particularly to a quinone-enriched modified biochar, its preparation method, and its application. In this invention, *Spartina alterniflora* is pyrolyzed under an inert atmosphere to obtain *Spartina alterniflora*-based biochar; the *Spartina alterniflora*-based biochar is then immersed in an anthraquinone-2-sulfonic acid solution to react and obtain quinone-enriched *Spartina alterniflora* biochar. This invention utilizes anthraquinone-2-sulfonic acid to modify the biochar, significantly increasing the surface quinone content, which effectively promotes the reduction-oxidation cycle of iron in sediments. The quinone-enriched modified biochar provides additional electron shuttle pathways, accelerating the iron cycling process, increasing the content of amorphous iron, and promoting the iron cycle and the formation and transformation of iron minerals. Through the promotion of iron cycling, the proportion of iron-bound organic carbon and recalcitrant organic carbon is increased, improving the fixation efficiency and stability of soil organic matter (SOC).

The application provides a multifunctional high-efficiency carbon fixation fertilizer based on iron-based nanoparticle addition and a preparation method thereof, and belongs to the technical field of agricultural fertilizers.The application realizes the organic combination of organic fertilizer and inorganic fertilizer through the multi-element compounding of raw materials, can effectively promote the conversion of organic matter in the organic fertilizer into soil organic matter by adding iron-based nanoparticles such as nano-Fe3O4 or nano-zero-valent iron as the main representative under the condition of ensuring sufficient supply of crop nutrients, and significantly improves the soil carbon fixation capacity.The application does not reduce the efficacy of microbial agents and humic acid, can improve soil microbial activity, is environmentally friendly, can promote plant growth and development, and improves crop yield and quality.The multifunctional fertilizer prepared by the application has good fertilizer slow-release effect, long slow-release time, simple preparation method, low cost, and good popularization and application value.