Cadmium removing adsorbent for marine products and preparation method of cadmium removing adsorbent

An adsorbent and seafood technology, which is applied in the field of seafood decadmium adsorbent and its preparation, can solve the problems of food health threat and excessive cadmium content, and achieves the effect of reducing processing cost and use cost.

Active Publication Date: 2018-05-04
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Moreover, in the common edible aquatic organisms, that is, seafood, the cadmium content of seaweed often exceeds the sta

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] A cadmium-removing adsorbent for seafood, comprising the following raw materials by weight: 20 parts of modified silica powder, 50 parts of fish bone powder, 25 parts of modified shell powder, 15 parts of shrimp shell powder, 10 parts of sodium gluconate, and sodium carbonate 3 parts, 200 parts of solvent.

[0038] Wherein, the described modified silica powder is processed through the following steps:

[0039] a. Wash the silica powder with water, then dry it, soak it in 0.5M dilute hydrochloric acid for 24h, and then dry it;

[0040] b. Add magnesium chloride to water to configure 1M magnesium chloride solution, then add sodium hydroxide solution to the solution to make it a magnesium hydroxide suspension;

[0041] c. Put the silica powder obtained in step a into the magnesium hydroxide suspension obtained in step b and soak for 48h, stir once every 2h, take out the treated silica powder and bake at 110°C Dry;

[0042] d. The silica powder obtain...

Example Embodiment

[0052] Example 2

[0053] A cadmium-removing adsorbent for seafood, comprising the following raw materials in parts by weight: 30 parts of modified silica powder, 70 parts of fish bone powder, 50 parts of modified shell powder, 30 parts of shrimp shell powder, 30 parts of sodium gluconate, and sodium carbonate 5 parts and 200 parts of solvent.

[0054] Wherein, the described modified silica powder is processed through the following steps:

[0055] a. Wash the silica powder with water, then dry it, soak it in 0.5M dilute hydrochloric acid for 24h, and then dry it;

[0056] b. Add magnesium chloride to water to configure 1M magnesium chloride solution, then add sodium hydroxide solution to the solution to make it a magnesium hydroxide suspension;

[0057] c. Put the silica powder obtained in step a into the magnesium hydroxide suspension obtained in step b and soak for 48h, stir once every 2h, take out the treated silica powder and bake at 110°C Dry;

[0058] d. The silica p...

Example Embodiment

[0068] Example 3

[0069] A cadmium-removing adsorbent for seafood, comprising the following raw materials by weight: 25 parts of modified silica powder, 60 parts of fish bone powder, 36 parts of modified shell powder, 20 parts of shrimp shell powder, 20 parts of sodium gluconate, and sodium carbonate 4 parts, 200 parts of solvent.

[0070] Wherein, the described modified silica powder is processed through the following steps:

[0071] a. Wash the silica powder with water, then dry it, soak it in 0.5M dilute hydrochloric acid for 24h, and then dry it;

[0072] b. Add magnesium chloride to water to configure 1M magnesium chloride solution, then add sodium hydroxide solution to the solution to make it a magnesium hydroxide suspension;

[0073] c. Put the silica powder obtained in step a into the magnesium hydroxide suspension obtained in step b and soak for 48h, stir once every 2h, take out the treated silica powder and bake at 110°C Dry;

[0074] d. The silica powder obtain...

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PUM

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Abstract

The invention discloses a cadmium removing adsorbent for marine products and a preparation method of the cadmium removing adsorbent. The cadmium removing adsorbent for the marine products is preparedfrom the following raw materials in part by weight: 20-30 parts of modified silica powder, 50-70 parts of fish bone meal, 25-50 parts of modified shell powder, 15-30 parts of shrimp shell powder, 10-30 parts of a complexing agent, 3-5 parts of sodium carbonate and 200-400 parts of a solvent. The invention further provides the preparation method of the cadmium removing adsorbent for the marine products. The method comprises the following steps: mixing the raw materials, drying the raw materials at 70-90 DEG C and grinding the raw materials into 30-50 meshes after drying. When the prepared cadmium removing adsorbent for the marine products is used for removing cadmium from the marine products, the marine products are not needed to be ground, and the cadmium removing rate is high; besides, daily domestic wastes such as shells, fish bones, shrimp shells and the like are recycled and turned into valuables, which is good for environmental protection and reduces the cost; meanwhile, the adsorbent has a certain removal effect on arsenic while effectively adsorbing cadmium.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a cadmium-removing adsorbent for seafood and a preparation method thereof. Background technique [0002] Foodborne illness and food contamination is a huge and expanding worldwide public health problem. Regardless of advanced or backward production methods, there are risk factors that cause food insecurity. In particular, the continuous adoption of new technologies and new raw materials in the field of food production has made food contamination factors increasingly complicated. Major food safety incidents caused by lead, cadmium, and methylmercury pollution in food are not uncommon, especially the heavy metal pollution in seafood is worthy of our deep thinking. [0003] Heavy metals refer to metal elements with a density above 5.0. In terms of environmental pollution, heavy metals refer to mercury, cadmium, lead, chromium and metalloid arsenic with signific...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30A23L5/20A23L17/00
CPCA23L5/273A23L17/00B01J20/043B01J20/103B01J20/24
Inventor 梅光明
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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