CN203183916U

CN203183916U - Device for fixing carbon dioxide by biologically mineralizing spirulina platensis of seawater system

Info

Publication number: CN203183916U
Application number: CN2013202055673U
Authority: CN
Inventors: 李宏煦; 刘彬彬; 毛亚琪; 王媛媛; 李超; 陈雨; 张祉倩
Original assignee: University of Science and Technology Beijing USTB
Current assignee: University of Science and Technology Beijing USTB
Priority date: 2013-04-22
Filing date: 2013-04-22
Publication date: 2013-09-11
Anticipated expiration: 2023-04-22

Abstract

The utility model relates to a device for fixing carbon dioxide by biologically mineralizing spirulina platensis of a seawater system. The device is formed by a carbon dioxide steel bottle, a first gas flow meter, an air compressor, a first buffering pot, a second buffering pot, a gas sampling opening, a first reactor, a second reactor, a third reactor, a fourth reactor, a fifth reactor, an illumination incubator, a drying pipe, a second gas flow meter and a gas chromatograph. The device disclosed by the utility model is simple in structure, simple in use conditions and abundant in resources; the device is carried out at a normal temperature and normal pressure and has no load to an environment; and meanwhile, a principle of carbon cycle in nature is met. The carbon dioxide is fixed by carbonating microorganisms so that the cost is greatly reduced, the fixed carbon dioxide can be completely stored and the device has the very great application prospect and economic benefits.

Description

The device of seawer system blunt top spirulina biomineralization stabilizing carbon dioxide

Technical field

The utility model belongs to the environmental project field of environment protection, is specifically related to a kind of device of using blunt top spirulina carbonate biomineralization stabilizing carbon dioxide in seawer system.

Background technology

The rapid increase of carbon dioxide causes and the process of having accelerated Global Greenhouse Effect, and carbon dioxide is mainly from the burning of fossil fuels such as oil, coal, as the gas of the discharging of steel plant, the tail gas of petrochemical enterprise and motor vehicle emission etc.In the face of increasing carbon dioxide, the capture of carbon dioxide and the exploration of fixing means and innovation are subjected to global common concern, and expectation can realize its effective application.

The present minimizing CO that occurs ₂Method have: separation and recovery technology, as absorption method, membrane separation process; Application technology as the second resource is as urea synthesis, carbonic hydroammonium; Capture and seal up for safekeeping technology, as carbon capture, carbon transportation and carbon sequestration technology etc.Yet the actual method that effectively adopts mainly is pressure sequestration of carbon dioxide technology, this method can become carbon dioxide into solid fast in hyperbaric environment, those have in the hyperbaric environment these greenhouse gases are preserved to be delivered directly to marine bottom etc. then.Yet the pressure technology of sealing up for safekeeping exists cost too high, and needed man power and material is huge especially, and the pressure technology of sealing up for safekeeping has unstable character, if pressure reduces, these solid carbon dioxides can discharge again again.Based on this, people are exploring and are inventing more effective, environmental protection and carbon dioxide absorption, fixing and transformation technology, wherein growth of microorganism fixation of C O cheaply ₂Because advantages such as environmental protection, low cost, gentle operation are subjected to common concern, become the research focus in present world environments protection field.

Summary of the invention

In order to address the above problem, the purpose of this utility model provides a kind of device that utilizes blunt top spirulina cyanobacteria carbonate biomineralization stabilizing carbon dioxide in the simulated seawater system, this device enlarges cultivation by the adaptability of carrying out to blunt top spirulina in the solution of the typical seawater component of simulation, in 5 grades of biomineralization reactors that simulated seawater composition solution is housed, add cultured suitability blunt top spirulina cyanobacteria, feed the carbon dioxide of high concentration then respectively, carbonate content variation in spirulina biological growth and the solution in the conditioned reaction device, promote the growth of blunt top spirulina, prolong its life cycle and increase its biomass, by blunt top spirulina biological growth process stabilizing carbon dioxide, promote the biomineralization of carbonate material in the simulated seawater system and the formation of precipitation simultaneously, realize the biomineralization of carbon dioxide fixing with the removing of solution system salinity.

The technical solution of the utility model is: the device of seawer system blunt top spirulina biomineralization stabilizing carbon dioxide, and this device is made up of carbon dioxide steel cylinder, first gas flowmeter, air compressor, first surge tank, second surge tank, gas sample mouth, first reactor, second reactor, the 3rd reactor, the 4th reactor, the 5th reactor, illumination box, drying tube, second gas flowmeter and gas chromatograph;

Wherein, described carbon dioxide steel cylinder connects by described first surge tank of first gas flowmeter, described air compressor is connected with described first surge tank, described first surge tank is connected with described second surge tank of an end, the other end of described second surge tank is by pipeline and be arranged on first reactor described in the described illumination box, second reactor, the 3rd reactor, the bottom parallel connection of the 4th reactor and the 5th reactor, one end of described drying tube is by pipeline and described first reactor, second reactor, the 3rd reactor, the top parallel connection of the 4th reactor and the 5th reactor, the other end of described drying tube is connected with described gas chromatograph by described second gas flowmeter.

The beneficial effects of the utility model are: invention provides a kind of relatively stable, lower-costly forms the form of carbonate and the new equipment of stabilizing carbon dioxide by biomineralization.Biogenic as stabilizing carbon dioxide, the blunt top spirulina cyanobacteria of choosing is a kind of common nature microorganism; A kind of biomineralization carbon dioxide reaction apparatus and technology path have been designed, the reaction condition gentleness that this process biological culture and carbon dioxide biomineralization are fixing, the biomineralization of salts substances combines with chemical reaction by the photosynthesis that takes place with biological surface in the organism and finishes in carbon dioxide fixation and the solution, fixed efficiency is controlled by the adjusting of biomass and biologically active and reactor environment, and carbon dioxide changes biological carbon into and generates permanent carbonate mineral matter by the biomineralization process that inorganic ion participates in to be fixed and preservation.

Description of drawings

Fig. 1 is the structural representation of the utility model device.

Among the figure:

1. carbon dioxide steel cylinder, 2. first gas flowmeter, 3. air compressor, 4. first surge tank, 5. first surge tank, 6. gas sample mouth, 7. first reactor, 8 first reactors, 9. first reactor, 10. first reactor, 11. first reactors, 12. illumination boxs, 13, drying tube, 14 second gas flowmeters, 15. gas chromatographs.

The specific embodiment

As shown in Figure 1, be the device of the utility model plan seawer system blunt top spirulina carbonate biomineralization stabilizing carbon dioxide, this device is made up of carbon dioxide steel cylinder, first gas flowmeter, air compressor, first surge tank, first surge tank, gas sample mouth, first reactor, second reactor, the 3rd reactor, the 4th reactor, the 5th reactor, illumination box, drying tube, second gas flowmeter and gas chromatograph;

Wherein, described carbon dioxide steel cylinder connects by described first surge tank of first gas flowmeter, described air compressor is connected with described first surge tank, described first surge tank is connected with described second surge tank of an end, the other end of described second surge tank is by pipeline and be arranged on first reactor described in the described illumination box, second reactor, the 3rd reactor, the bottom of the 4th reactor and the 5th reactor is in parallel successively, one end of described drying tube is by pipeline and described first reactor, second reactor, the 3rd reactor, the top parallel connection of the 4th reactor and the 5th reactor, the other end of described drying tube is connected with described gas chromatograph by described second gas flowmeter.

During use, the simulated seawater culture medium 100mL that reaches earlier after the sterilization places the 250mL volumetric flask, inoculation blunt top spirulina stoste 10mL, put into illumination box and cultivate, intensity of illumination is 3000lux, 35 ℃ of temperature, Light To Dark Ratio 12:12, cultivate and go a small amount of inoculation after 5 days, continue then under identical condition, to cultivate, namely enlarge for the second time and cultivate.This solution is stand-by as the subsequent experimental inoculation liquid; Solution 10 ml that get second generation expansion cultivation are inoculated into 5L and are equipped with in the conical flask of simulated seawater nutrient solution, according to top method the blunt top spirulina cyanobacteria is carried out the three generations and inoculate the expansion illumination cultivation, be 0.6 when above when bacterium liquid biomass reaches OD560nm, bacterium liquid is inserted in 5 grades of flow reactors in parallel, solution with blunt top spirulina bacterium liquid and adjusting seawater component is raw material, and simulated seawater solution composition metal cation is Na ⁺, K ⁺, Ca ²⁺, Mg ²⁺, anion is Cl ^-, SO ₄ ^2-, Br ^-, HCO ₃ ^-, CO ₃ ^2-

(2) the control temperature of reactor is 35 ℃, intensity of illumination is 3000lux, Light To Dark Ratio 12:12, treat that blunt top spirulina cyanobacteria growth rate is more than 24.3% in 5 reactors, biomass yield by air mixing and the surge tank of design apparatus, feeds the carbon dioxide of concentration 12% more than 2.91g/L, feed gas velocity at 100 mL/min, regulate preceding two reactor simulation seawater Ca ²⁺Concentration 0.2 mol/L, Mg ²⁺0.4mol/L, Ca in back three reactors ²⁺, Mg ²All below 0.02mol/L, pH is 9.5 to ion concentration in each reactor, and the amount of the carbonate that thalline biomass and biomineralization generate in the detection solution changes by carbonate content in spirulina biological growth and the solution in the conditioned reaction device.Fixing back atmospheric carbon dioxide concentration reaches atmospheric level 0.03%, goes out Ca in the aqueous solution ²⁺, Mg ²All below 0.02mol/L, water outlet pH is 7.0 to ion concentration, has played the fixing effect with the salts substances biomineralization of good carbon dioxide.

Claims

1. the device of seawer system blunt top spirulina biomineralization stabilizing carbon dioxide, it is characterized in that this device is made up of carbon dioxide steel cylinder, first gas flowmeter, air compressor, first surge tank, second surge tank, gas sample mouth, first reactor, second reactor, the 3rd reactor, the 4th reactor, the 5th reactor, illumination box, drying tube, second gas flowmeter and gas chromatograph;