CN114669181A

CN114669181A - System for constructing and promoting carbon dioxide and water gas-liquid transfer based on anionic vesicles

Info

Publication number: CN114669181A
Application number: CN202210229436.2A
Authority: CN
Inventors: 刘承琨; 王小强; 石壮; 刘畅; 刘小丹; 黄方
Original assignee: China University of Petroleum East China
Current assignee: China University of Petroleum East China
Priority date: 2022-03-09
Filing date: 2022-03-09
Publication date: 2022-06-28
Anticipated expiration: 2042-03-09
Also published as: CN114669181B

Abstract

The invention discloses a biological carbon sequestration system which is constructed by promoting gas-liquid transfer of carbon dioxide and water through interaction between vesicles and calcium ions based on that anion vesicles are crystal cores, and comprises the following steps: (1) dissolving phospholipids with different ratios with chloroform, and placing in a liquid bottle to form uniform phospholipid membrane. (2) Adding fluorescent dye, deoxycholic acid and Tris-HCl buffer solution into the phospholipid membrane, and preparing the vesicle by an extrusion method. (3) Adding a proper amount of biological beads into the extruded suspension liquid, and oscillating for a period of time. (4) And (4) putting the solution with the biological beads removed into a dialysis bag for dialysis. (5) And (3) placing the prepared vesicle in a calcium chloride solution, and introducing carbon dioxide gas to obtain a fixed calcium carbonate crystal. The preparation method is simple, the operation is easy, the large-scale production and storage are easy, the mineralization technology is combined, the material can adsorb a large amount of carbon dioxide gas, the carbon fixation efficiency is improved, and the material can be applied to the current carbon fixation emission reduction application device.

Description

System for constructing and promoting carbon dioxide and water gas-liquid transfer based on anionic vesicles

Technical Field

The invention relates to a biological carbon fixation system which is constructed by taking anion vesicles as crystal cores and promoting gas-liquid transfer of carbon dioxide and water through interaction between the vesicles and calcium ions.

Background

Carbon neutralization means that enterprises offset self-discharged carbon dioxide through modes of tree planting, energy conservation and emission reduction, microalgae carbon sequestration and the like, so that zero emission is realized. Many methods and systems capable of fixing carbon dioxide have been developed at present, for example, patent CN113663482A discloses a method for utilizing waste heat of carbon neutralization electrolysis flue gas and purifying flue gas; patent CN113667698A discloses a microbial self-synthesis cadmium sulfide semiconductor, a preparation method thereof and a method for reinforcing and fixing carbon dioxide; patent CN113648975A discloses an ionic liquid/natural porous inorganic mineral composite material for capturing CO₂The method of use of (1); patent CN113637589A discloses an artificial cultivation method and application of marine diatom, which can stably capture carbon dioxide to form organic components. Although the above-mentioned patents have the capability of capturing carbon dioxide, the function is slightly single and the using method is complicated, so that the anionic vesicles can effectively promote the hydration degree of carbon dioxide through the ionic interaction, thereby enhancing the capturing amount of carbon dioxide.

Disclosure of Invention

The invention aims to construct a system for promoting carbon dioxide and water-gas-liquid transfer based on anionic vesicles, wherein the system takes the anionic vesicles as crystal nuclei and achieves the effect of enhancing the fixed amount of carbon dioxide through ionic interaction. The invention provides a method for promoting biological carbon sequestration realized by carbon neutralization.

In order to realize the technical scheme, the construction of the anion vesicle for promoting the construction of a carbon dioxide and water gas-liquid transfer system comprises the following steps:

(1) dissolving phospholipids with different ratios with chloroform, and placing in a liquid bottle to form uniform phospholipid membrane.

(2) Adding fluorescent dye, deoxycholic acid and Tris-HCl buffer solution into the phospholipid membrane, and preparing the vesicle by an extrusion method.

(3) Adding a proper amount of biological beads into the extruded suspension liquid, and oscillating for a period of time.

(4) And (4) putting the solution with the biological beads removed into a dialysis bag for dialysis.

(5) And (3) placing the prepared vesicle in a calcium chloride solution, and introducing carbon dioxide gas to obtain a fixed calcium carbonate crystal.

The phospholipids in step (1) of the present invention are DOPC, DOPS and POPC, but are not limited thereto.

The fluorescent dye in the step (2) is carboxyl fluorescein sodium and FITC, and the preparation method is an extrusion method or an ultrasonic method, but is not limited to the methods.

The step (4) of the present invention may be performed by chromatography other than dialysis, but not limited thereto.

Compared with the prior art, the invention has the following advantages: (1) the preparation method is simple, the use and the operation are easy, and the large-scale production and the storage are easy; the carbon fixing material prepared in the step (2) can absorb a large amount of carbon dioxide gas and convert the carbon dioxide gas into calcium carbonate crystals, so that the carbon fixing efficiency is improved; (3) the carbon fixing system is ingenious in arrangement and small in occupied area;

Description of the drawings:

FIG. 1 is a schematic diagram of carbon fixation of an anionic vesicle in example 1 according to the present invention;

FIG. 2 is an SEM image of liposome-loaded calcium carbonate precursors of example 1 in accordance with the present invention;

FIG. 3 is a STEM picture of the co-precipitation of liposomes with calcium carbonate precursors according to example 1;

FIG. 4 is the anisotropic structure of the liposome-induced calcium carbonate droplet formation of example 1 in accordance with the present invention;

FIG. 5 is a schematic diagram of the liposome-mediated formation of calcium carbonate droplets, solid nanospheres and nanorods according to example 1 of the present invention;

detailed description of the invention

The invention is further illustrated by the following specific examples and the accompanying drawings of the specification.

Example 1:

(1) preparation of carboxyl/phosphate-rich liposomes

The mixture of DOPC and DOPS was dried in a glass vial and dissolved in a buffer containing deoxycholate (fluorescent dye-labeled) and Tris-HCl. The sample was stirred with the biological beads for 90 minutes at room temperature, and the addition of a portion of the biological beads was continued to remove the detergent (deoxycholate). The liposome-rich supernatant was collected and stored.

(2) Study of the mineralization Processes of liposomes

Liposomes of a certain concentration were mixed well with 1.5mM calcium chloride solution in a beaker, after which the beaker was placed in a steam environment containing CO2/NH3 and a carbon-coated copper grid or glass slide was placed at the bottom of the beaker with a cell phone pellet. The collected samples were briefly rinsed with ultrapure water and ethanol and characterized after drying at room temperature. SEM and STEM characterization of calcium carbonate precursors, co-precipitation of liposomes with calcium carbonate, and liposome-induced formation of calcium carbonate droplets were performed, respectively, by mineralization time or concentration adjustment of liposomes.

Example 2:

this example was the same as example 1 except that in step (2), the calcium chloride concentration was increased to 2 mM.

Example 3:

this example and example 1 except that in step (3)

Tests show that the gel hemostatic dressings prepared in example 2 and example 3 have similar performances to those of example 1 except that the release rate and swelling characteristics of the tissue factor-liposome are different from those of example 1.

Claims

1. A system for promoting carbon dioxide and water-gas-liquid transfer constructed on the basis of anionic vesicles is characterized by comprising the following steps:

(2) Adding fluorescent dye, surfactant and Tris-HCl buffer solution into phospholipid membrane, and preparing vesicle by extrusion method.

(3) Adding a proper amount of biological beads into the extruded suspension, and oscillating for a period of time.

(4) And putting the solution with the biological beads removed in a dialysis bag for dialysis.

2. The system for promoting carbon dioxide and water-gas-liquid transfer constructed on the basis of the anionic vesicles as claimed in claim 1, wherein the fluorescent dye is carboxyl fluorescein sodium, fluorescein isothiocyanate and rhodamine, but not limited to the carboxyl fluorescein sodium, the fluorescein isothiocyanate and the rhodamine.

3. The system for promoting carbon dioxide and water-gas-liquid delivery constructed based on anionic vesicles as claimed in claim 2, wherein the surfactant is deoxycholic acid, tween and Triton, but not limited thereto.

4. The system for promoting carbon dioxide and water-gas-liquid transfer constructed based on the anionic vesicles according to claim 3, wherein the phospholipid in the step (1) is one or more of Phosphatidylcholine (PC), Phosphatidylserine (PS), Phosphatidylethanolamine (PE) and glycerophosphatidic acid (PA), but not limited to these.

5. The system for promoting carbon dioxide and water-gas-liquid transfer constructed based on the anionic vesicles according to claim 4, wherein the buffer in step (2) is Tris-HCl or PBS, but not limited to the two.

6. The system for promoting carbon dioxide and water gas liquid transfer constructed on the basis of the anionic vesicles according to claims 1-5, is characterized in that a traditional mineralization crystal nucleus theory is utilized, cations are enriched around the anionic vesicles, and then carbon dioxide hydration is accelerated, so that the system for promoting carbon dioxide and water gas liquid transfer is constructed, and can be applied to an application environment for emission reduction.