High-efficiency carbon or nitrogen supply device for microalgae autotrophy

Abstract

The present invention discloses a high-efficiency carbon or nitrogen supply device for microalgae autotrophy. The high-efficiency carbon or nitrogen supply device comprises a reaction chamber, the reaction chamber has a certain accommodating cavity, the reaction chamber is provided with an anion membrane and a bipolar membrane, three independent sub-chambers are formed in the reaction chamber, thesub-chamber between the anion membrane and the bipolar membrane is a microalgae chamber, microalgae to be cultivated and a culture solution are placed in the microalgae chamber, the sub-chamber on the other side of the anion membrane is an cathode chamber, a bicarbonate solution or a nitrate solution is added to the cathode chamber, only anions are allowed to enter the microalgae chamber from thecathode chamber, the sub-chamber on the other side of the polar membrane is an anode chamber, an anode surface of the bipolar membrane faces the microalgae chamber, a sulfate solution is added to theanode chamber, and only cations are allowed to enter the microalgae chamber from the anode chamber side and anions from the microalgae chamber side enter the anode chamber; and inert electrodes are respectively arranged in the cathode chamber and the anode chamber and are also connected with an external power supply. The high-efficiency carbon or nitrogen supply device can effectively isolate thecations outside the microalgae chamber and exclusively supply the anions (HCO3- / NO3-) for the microalgae autotrophy.

Description

technical field [0001] The invention relates to the field of microbial self-supporting equipment. More specifically, the present invention relates to a high-efficiency carbon or nitrogen supply device for microalgae autotrophy. Background technique [0002] Microalgae (microalgae) refers to those tiny groups of algae whose shape can only be distinguished under a microscope, and is a general term for microorganisms that have chlorophyll a and can perform photosynthesis. There are many kinds of microalgae, and microalgae cells contain high-value nutrients and chemical raw materials such as protein, lipid, algal polysaccharide, β-carotene, and various inorganic elements (such as Cu, Fe, Se, Mn, Zn, etc.) ; Its protein content is very high, and it is an important source of single-cell protein (SCP); vitamin A, vitamin E, thiamine, riboflavin, pyridoxine, vitamin B12, vitamin C, biotin contained in microalgae , inositol, folic acid, calcium pantothenate, and niacin, among other...

AI Technical Summary

Problems solved by technology

Microalgae culture can be divided into photoautotrophic and non-photoautotrophic (heterotrophic / concurrent), among which non-photoautotrophic has the disadvantages of high equipment requirements, high environmental requirements, and expensive fermentation raw materials, which lead to heterotrophic / concurrent cultivation High and easily polluted

However, photoautotrophy encounters two bottlenecks in large-scale open systems: First, CO2 waste: CO2 is directly introduced into the runway pool, and the solubility of CO2 in water is extremely low, causing a large amount of CO2 to escape and cause serious losses; Second, adding directly in the form of carbonate or bicarbonate, as the anions (carbon) are utilized by the cells, the cations gradually accumulate, causing cell toxicity and inhibiting microalgae cultivation

Images