Magnetic high-efficiency algaecide and preparation method and application thereof

An algaecide and high-efficiency technology, applied in the field of magnetic high-efficiency algaecide and its preparation, can solve the problems of algal bloom, algal cell desorption, etc., and achieve the effects of improving water quality, widening sources, and preventing secondary outbreaks

Inactive Publication Date: 2018-04-10
ANHUI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a magnetic high-efficiency algaecide and its preparation method and application, which solves the problem that when using nanomaterials to remove algae, the adsorption of nanomaterials is often reversible. Desorption of algae cells can occur, causing problems with algae blooms again

Method used

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  • Magnetic high-efficiency algaecide and preparation method and application thereof
  • Magnetic high-efficiency algaecide and preparation method and application thereof
  • Magnetic high-efficiency algaecide and preparation method and application thereof

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preparation example Construction

[0030] The invention provides a method for preparing a magnetic high-efficiency algaecide, the preparation method comprising: mixing nano ferric oxide and allelochemicals, wherein

[0031] Allelochemicals are p-hydroxybenzoic acid and / or coumarin.

[0032] In a preferred embodiment of the present invention, in order to further improve the algae-removing effect of the prepared magnetic high-efficiency algicide, nano-ferric oxide and p-hydroxybenzoic acid are mixed according to the ratio of 80-160mg: 0.08-0.16mmol .

[0033] In a preferred embodiment of the present invention, in order to further improve the algae-removing effect of the prepared magnetic high-efficiency algicide, nano-ferric oxide and coumarin are mixed in a ratio of 80-160mg: 0.15-0.2mmol.

[0034] In a preferred embodiment of the present invention, in order to further improve the algae-removing effect of the magnetic high-efficiency algaecide prepared, nano-ferric oxide, p-hydroxybenzoic acid and coumarin are ...

Embodiment 1

[0041] Mix nano iron ferric oxide (10nm), p-hydroxybenzoic acid and coumarin into 20mL culture medium, after ultrasonic dispersion, add algae liquid (Microcystis aeruginosa) to make the volume to 100mL, so that the cell concentration of algae liquid is about 2×10 6 Individual / mL; Wherein, the concentration of nano ferric oxide is 800mg / L (this concentration is marked as F 2 ), the concentration of p-hydroxybenzoic acid is 0.8mmol / L (this concentration is marked as P 3 ), the concentration of coumarin is 1.5mmol / L (this concentration is marked as C 3 );

[0042] Under the condition of an external magnetic field, use a pipette gun to draw the supernatant of the algae liquid, calculate the number of algae cells in the algae liquid at 24 / 48 / 72 and 96 hours by using the hemocytometer method, and use the algae removal rate formula to calculate the algae removal rate . (Here, the control group only contained 20 mL of culture solution, and added algae solution to make the volume t...

Embodiment 2

[0044] Carry out according to the method of embodiment 1, difference is, the concentration of coumarin is 2mmol / L. see results figure 1 .

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Abstract

The invention discloses a magnetic high-efficiency algaecide and a preparation method and application thereof. The preparation method comprises mixing of nano-ferroferric oxide and allelochemicals, wherein the allelochemicals comprise p-hydroxybenzoic acid and/or coumarin. The problems that when nano-materials are used to remove algae, algae cells may desorb under the conditions of wind power andwater conservancy to cause large re-emerge of the algae because the nano-materials are often reversible in adsorption can be solved.

Description

technical field [0001] The invention relates to an algaecide, in particular to a magnetic high-efficiency algaecide and its preparation method and application. Background technique [0002] In recent years, the eutrophication of natural water bodies such as lakes and rivers has become a widespread concern. It not only reduces the transparency of the water body and affects the landscape function of the water body, but also the algae toxins released by the growth and death of algae will cause great damage to the aquatic ecosystem, even endanger human health, and cause adverse effects on the surrounding environment. In view of this, it is particularly important to choose reasonable methods to effectively control eutrophic water bodies. At present, algae removal technologies mainly include physical methods, chemical methods, physicochemical methods, and biological (or ecological) methods. Physical methods include manual fishing, dredging, clay flocculation, etc. Physical meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/50C02F1/48C02F1/28
CPCC02F1/281C02F1/488C02F1/50C02F2103/007C02F2303/20
Inventor 左胜鹏蒋小峰吴淦叶良涛
Owner ANHUI NORMAL UNIV
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