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Shellfish feeding bait and method for reducing heavy metals in shellfish bodies

A technology for heavy metals and shellfish, which is applied in the field of heavy metal pollution prevention and control, can solve the problem that the removal rate of heavy metals needs to be improved, and achieves the effects of strong reduction of heavy metals, reduction of heavy metals, and promotion of metabolism.

Inactive Publication Date: 2019-03-19
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the removal rate of cadmium and lead was only 50% after the polysaccharide complex purified shellfish for 5 days, and the removal rate of heavy metals needs to be improved.

Method used

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  • Shellfish feeding bait and method for reducing heavy metals in shellfish bodies

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Effect test

Embodiment 1

[0031] A shellfish feeding bait, its preparation method comprises the following steps:

[0032](1) Preparation of banana stalk cellulose ester: dissolve banana stalk cellulose in toluene, the solid-to-liquid ratio of banana stalk cellulose and toluene is 1g / 12mL, add maleic anhydride, the mixture of banana stalk cellulose and maleic anhydride The molar ratio is 1:3, heated to 100°C, reacted for 3 days, filtered and dried to obtain banana stalk cellulose ester;

[0033] (2) Preparation of microalgae fragments: Place Scenedesmus obliques, Phaeodactylum tricornutum and Chlorella seawater with a mass ratio of 2.5:1.5:1 in clean seawater, add a concentration of 70mg / L containing A mixed solution of Cr, Cd, Pb, Hg ions, induced 8d. Centrifuge the induced mixed algae, remove the supernatant, add water 4 times the mass volume of the mixed algae to the mixed algae, break it for 25 minutes, then add a hydrochloric acid solution with a concentration of 1.0mol / L, filter, wash, and vacuum...

Embodiment 2

[0041] A shellfish feeding bait, its preparation method comprises the following steps:

[0042] (1) Preparation of banana stalk cellulose ester: dissolve banana stalk cellulose in toluene, the solid-liquid ratio of banana stalk cellulose and toluene is 1g / 10mL, add maleic anhydride, the mixture of banana stalk cellulose and maleic anhydride The molar ratio is 1:2, heated to 90°C, reacted for 3 days, filtered and dried to obtain banana stalk cellulose ester;

[0043] (2) Preparation of microalgae fragments: Place Scenedesmus obliques, Phaeodactylum tricornutum and Chlorella seawater with a mass ratio of 2:1:1 in clean seawater, add a concentration of 80mg / L containing A mixed solution of Cr, Cd, Pb, Hg ions, induction 10d. Centrifuge the induced mixed algae, remove the supernatant, add water 3 times the mass volume of the mixed algae to the mixed algae, break it for 20 minutes, add a nitric acid solution with a concentration of 1.2mol / L, filter, wash, vacuum dry and then add ...

Embodiment 3

[0051] A shellfish feeding bait, its preparation method comprises the following steps:

[0052] (1) Preparation of banana stalk cellulose ester: dissolve banana stalk cellulose in toluene, the solid-to-liquid ratio of banana stalk cellulose and toluene is 1g / 12mL, add maleic anhydride, the mixture of banana stalk cellulose and maleic anhydride The molar ratio is 1:3, heated to 100°C, reacted for 3 days, filtered and dried to obtain banana stalk cellulose ester;

[0053] (2) Preparation of microalgae fragments: Place Scenedesmus obliques, Phaeodactylum tricornutum and Chlorella seawater with a mass ratio of 2.5:1.5:1 in clean seawater, add 60 mg / L of A mixed solution of Cr, Cd, Pb, Hg ions, induced 8d. Centrifuge the induced mixed algae, remove the supernatant, add water 4 times the mass volume of the mixed algae to the mixed algae, break it for 25 minutes, then add a hydrochloric acid solution with a concentration of 1.0mol / L, filter, wash, and vacuum dry Add 4 times the vol...

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Abstract

The invention relates to the technical field of preventing and governing of heavy metals contamination, and discloses a shellfish feeding bait and a method for removing heavy metals in shellfish bodies. The shellfish feeding bait disclosed by the invention comprises banana stalk cellulose esters, modified chitin, microalgae fragments and immune modulating peptide, wherein a complicated three-dimensional net structure can be formed among the banana stalk cellulose esters, the modified chitin, the microalgae fragments and the immune modulating peptide. Through the adoption of the shellfish feeding bait, the effect of reducing heavy metal is good, metabolisms of shellfish can be promoted, and the speed that heavy metal ions are discharged out of bodies of the shellfish can be accelerated. Themethod for reducing heavy metals in shellfish bodies through the shellfish feeding bait disclosed by the invention is simple; and after the shellfish feeding bait is recovered, through repeated desorption circulation, the shellfish feeding bait can still maintain higher activity.

Description

technical field [0001] The invention relates to the technical field of heavy metal pollution prevention and control, in particular to a shellfish feeding bait and a method for reducing heavy metals in the shellfish. Background technique [0002] my country is a big country in shellfish farming, and its total output has ranked first in the world for many years. In 2004, the total output of shellfish in my country was 11.62 million tons, of which more than 95% were marine shellfish, accounting for more than 40% of the total seafood. Shellfish has been one of the aquatic products that people like. However, due to the poor mobility of shellfish and relatively fixed living areas, most of them live in sea areas near estuaries, so they are often invaded and affected by domestic sewage and industrial sewage, and are easily polluted. At the same time, the bivalve economic shellfish is a filter-feeding organism. While filtering and feeding on erbium-based organisms, it also inhales ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K10/30A23K20/163A23K20/147A23K50/80A01K61/50A23L5/20
CPCA23K10/30A23K20/147A23K20/163A23K50/80A23L5/20A01K61/50Y02A40/81
Inventor 刘俊稚葛亚明杨桥张晓玲穆军
Owner ZHEJIANG OCEAN UNIV
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