A composite eluting composition for removing heavy metals in microalgae algae flour

Abstract

The invention discloses a composite elution composition for eliminating heavy metals in microalgae powder. The pH value of the composite elution composition is 7.8-8.2, the composite elution composition consists of C2H4O2, C2H2O4, CaCl2 and artificial seawater, wherein the mass ratio of C2H4O2 to C2H2O4 to CaCl2 is 6:9:11.1; the concentrations of C2H2O4 and CaCl2 are the same in the artificial seawater, and are both 0.05-1 mol / L; the pH value of the artificial seawater is 7.8-8.2; the artificial seawater consists of KCl, NaCl and water in a ratio of (0.36-0.38 g):(2.4-2.6 g):(480-520 mL). By adopting the composite elution composition disclosed by the invention, heavy metals on the surface of the microalgae powder can be effectively eluted, moreover, microalgae cells are not damaged, eluted microalgae powder is still green, and market sale of the microalgae powder is not affected.

Description

technical field [0001] The invention belongs to the technical field of microalgae heavy metal treatment, and in particular relates to a composite elution composition for removing heavy metals in microalgae powder. Background technique [0002] There are many kinds of algae with different shapes, and there are more than 30,000 known species. As the largest biological group on the earth, algae is of great significance in environmental protection. It has high photosynthesis efficiency, strong carbon dioxide fixation ability, can remove toxic and harmful substances, and can also produce oil and extract useful substances. It has broad prospects for resource utilization. In recent years, with the continuous progress of science and the in-depth research of experts and scholars, many unknown values ​​of algae have been unearthed, and they are widely used in daily life, especially in food and medicine. [0003] Nannochloropsis is one of the algae that has received much attention. It...

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Problems solved by technology

[0005] The commercial products of Nannochloropsis also have the problem of heavy metal lead exceeding the standard. There are two ways to solve this problem. One is to control the content of heavy metal lead ingested by Nannochloropsis during the cultivation process, that is, to reduce the amount of lead in seawater or culture solution. However, this method is extremely difficult to operate and requires a lot of money as a cost; the second is to elute the product through an eluent, and it is required that the lead content in the eluted product does not exceed the standard and does not damage the cell structure

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