Method for extracting pure diatom shells from marine single-cell diatom

A technology of pure diatom frustules and single cells, applied in the direction of silicon oxide, silicon dioxide, etc., can solve the problems of cumbersome operation process, mutual adhesion, broken shell, etc., and achieve simple operation process, simple operation process, and shell structure full effect
CN112978738AInactive Publication Date: 2021-06-18OCEAN UNIV OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
OCEAN UNIV OF CHINA
Publication Date
2021-06-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for extracting pure diatom shells from marine unicellular diatom. The method comprises the following steps: (1) preparing algae mud; (2) treating algae mud by an acid-heat method; and (3) washing and drying. Compared with the prior art, the method has the advantages that the operation process is simple and feasible; the completeness is good, and the diatom shell treated by using the mixed acid solution of sulfuric acid and nitric acid is complete in structure and clear in pore; the cleanliness is high, organic matter and harmful solvent residues do not exist on the surfaces of the diatom shells, and the purity is high; the invention provides a simple and efficient method for extracting and separating high-purity diatom shells from marine diatom and other unicellular organisms containing the diatom shells, and further research of a factory-like large-scale diatom shell extraction and separation process is facilitated.
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Description

technical field

[0001] The invention relates to the extraction of diatom frustules, in particular to a method for extracting complete and pure diatom frustules from single-cell diatoms. Background technique

[0002] Diatoms are a group of photoautotrophic unicellular eukaryotic algae that are widely distributed in marine and freshwater ecosystems around the world. It is one of the most important primary productivity in the marine ecosystem, which can produce 4.5-5 billion tons of organic carbon every year, accounting for 40% of the primary productivity of the ocean and 20% of the global primary productivity. Diatoms have very strong adaptability to the environment, grow rapidly, and some species can be cultivated on a large scale, and can accumulate a large amount of biomass in a short period of time. Diatom frustule (diatom frustule) is the cell wall of diatoms. It is a solid shell formed by absorbing silicate in the environment and depositing it through the biomineralizat...

Claims

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