Preparation method of algae inhibitor
An inhibitor and algae technology, applied in the field of water treatment, can solve the problems of pollution and high preparation cost, and achieve the effect of low cost and simple process
Inactive Publication Date: 2006-03-22
TSINGHUA UNIV
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[0003] In order to solve the problem of high cost or pollution in the preparation of existing algae inhibitors, the present invention provides a method for extracting and separating algae inhibitors with allelochemicals as main components from plants, which is characterized in that the method includes the following steps:
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Embodiment 1
[0021] 2.8 kg of crushed reeds were extracted with 7 liters of ethanol, and the extract was concentrated with CHCl 3 After extraction with hydrochloric acid, the aqueous phase was extracted with ethanol / petroleum ether (10:1) to obtain an algae inhibitor dissolved in ethanol. Add the obtained algae inhibitor into the water body to be treated, and when the inhibitor is 1 mg / liter, the inhibitory rate to Microcystis aeruginosa is 97%.
Embodiment 2
[0023] 1 kg of crushed reed was extracted with 2 liters of ethanol, and the extract was concentrated with CHCl 3 After extraction with hydrochloric acid, the aqueous phase was extracted with ethanol / petroleum ether (5:1) to obtain an algae inhibitor dissolved in ethanol. The obtained algae inhibitor is added to the water body to be treated, and when the inhibitor is 1.5 mg / liter, the inhibition rate to Microcystis aeruginosa is 98%.
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The present invention belongs to the field of water treating technology, and aims at providing one kind of cheap and pollution-free algae inhibitor. The preparation process of algae inhibitor includes the following steps: crushing reed as material and lixiviating with organic solvent to obtain extractive liquid; eliminating suspended grain from the extractive liquid and concentration to obtain white precipitate an and paste B; extracting the paste B with CHCl3 / hydrochloric acid to obtain water phase extractive liquid C; and concentrating extractive liquid C and extracting with ethanol / petroleum ether to obtain ethanol phase with dissolved algae inhibitor in the lower layer. The said process is simple, cheap and non-toxic.
Description
technical field [0001] The invention belongs to the field of water treatment, in particular to a preparation method of a natural algae inhibitor of polluted water. Background technique [0002] Copper ions (Cu 2+ ) as an inhibitor, but Cu 2+ It will cause new pollution and kill other aquatic organisms. The method of mechanically filtering algae from water bodies is expensive and difficult to apply on a large scale. Allelochemicals produced by plants can act as algae inhibitors. The currently reported extraction methods of allelochemicals that inhibit algae require the use of expensive reagents, separation columns, etc., and the cost is too high. Contents of the invention [0003] In order to solve the problem of high cost or pollution in the preparation of existing algae inhibitors, the present invention provides a method for extracting and separating algae inhibitors with allelochemicals as main components from plants, which is characterized in that the method include...
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IPC IPC(8): C02F1/68C02F3/32
CPCY02W10/10
Inventor 胡洪营李锋民
Owner TSINGHUA UNIV