Composite decoloration adsorbent for shellfish products and preparation method of composite decoloration adsorbent

An adsorbent and product technology, which is applied in the composite decolorization adsorbent for heavy metal adsorption and its preparation, and in the field of decolorization of shellfish products, can solve the problems of great harm, great animal toxicity, and large investment in equipment, and achieve strong adsorption capacity and regeneration performance Good, good stability

Inactive Publication Date: 2012-06-20
HAINAN YEDAO (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Trivalent chromium is very harmful to animals, while hexavalent chromium is very harmful to human body
[0011] All of the above methods have complicated procedures, large investment in equipment such as heating and roasting treatment, vacuum low-temperature drying, and ultrasound, high energy consumption, pollution of the environment by organic solvent emissions, and single product functions (no decolorization and impurity removal functions) and other problems.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Soak attapulgite with 0.2mol / L HCl, centrifuge, dry the solid at 90°C to constant weight, roast at 300°C for 3 hours, and pass through a 200-mesh sieve to obtain acid-activated attapulgite; acid-activated attapulgite: Activated carbon powder = 1: 2 mixed evenly. Slowly dissolve chitosan with a deacetylation degree of 92% with 3.5% acetic acid solution to obtain 4% chitosan sol; mix acid-activated attapulgite with activated carbon powder, add 5% chitosan sol, and heat at 30°C Mix well to form a paste, completely wet the mixture of acid-activated attapulgite and activated carbon powder, and carry out modification reaction; then dry at 100°C to constant weight; pass through a 200-mesh sieve to obtain a composite decolorizing adsorbent.

[0031] Adsorption (use) method: add 2.5% compound decolorization adsorbent to the mussel cooking liquid to be treated at 25°C, stir and adsorb for 1 hour under natural pH conditions, centrifuge and filter with diatomaceous earth.

[0032]...

Embodiment 2

[0034] Soak attapulgite with 0.1mol / L HCl, centrifuge, dry the solid at 95°C to constant weight, roast at 350°C for 2.5h, and pass through a 200-mesh sieve to obtain acid-activated attapulgite; acid-activated attapulgite : Activated carbon powder = 1: 3 mix well. Slowly dissolve chitosan with a deacetylation degree of 90% with 4% acetic acid solution to obtain 3% chitosan sol; mix acid-activated attapulgite with activated carbon powder, add 4% chitosan sol, and heat at 25°C Mix well to form a paste, completely wet the mixture of acid-activated attapulgite and activated carbon powder, and carry out modification reaction; then dry at 95°C to constant weight; pass through a 200-mesh sieve to obtain a composite decolorizing adsorbent.

[0035] Adsorption (use) method: add 1% compound decolorization adsorbent to the mussel cooking liquid to be treated at 25°C, stir and adsorb for 1.5 hours under natural pH conditions, centrifuge and filter with diatomaceous earth.

[0036] After b...

Embodiment 3

[0038] Soak attapulgite with 0.15mol / L HCl, centrifuge, dry the solid at 85°C to constant weight, roast at 400°C for 2 hours, and pass through a 200-mesh sieve to obtain acid-activated attapulgite; acid-activated attapulgite: Activated carbon powder = 1: 2.5 and mix well. Slowly dissolve chitosan with a deacetylation degree of 85% with 3.0% acetic acid solution to obtain 3.5% chitosan sol; mix acid-activated attapulgite with activated carbon powder, add 3.5% chitosan sol, and heat at 20°C Mix well to form a paste, completely wet the mixture of acid-activated attapulgite and activated carbon powder, and carry out modification reaction; then dry at 90°C to constant weight; pass through a 200-mesh sieve to obtain a composite decolorizing adsorbent.

[0039] Adsorption (use) method: add 2.0% compound decolorizing adsorbent to the mussel cooking liquid to be treated at 20°C, stir and adsorb for 2 hours under natural pH conditions, centrifuge and filter with diatomaceous earth.

[...

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Abstract

The invention provides a safer, high-efficiency and multifunctional preparation method of composite decoloration adsorbent for shellfishes, which is used for realizing decoloration of shellfish products and heavy metal adsorption so as to reduce heavy metal content and color of shellfish cooking liquid, mussel cooking liquid can be sufficiently developed and utilized by the aid of the method, and injury to human bodies due to excessive heavy metal is avoided.

Description

technical field [0001] The invention relates to a composite decolorizing adsorbent, in particular to a composite decolorizing adsorbent for shellfish product decolorization and heavy metal adsorption and a preparation method thereof. Background technique [0002] Marine shellfish are delicious and nutritious, and are very popular among people. However, most of them are filter-feeding organisms and have a high accumulation capacity for heavy metals. In addition, rivers have been polluted by heavy metals in recent years, and the accumulation of harmful heavy metals in shellfish has also increased. In some serious areas, the excess rate of heavy metals in shellfish is as high as 90%. [0003] Mussel cooking liquid is a by-product produced in the process of processing mussels into frozen or dried products. It contains a large amount of soluble protein, polysaccharides, lipids, etc., and is very rich in nutrients. With the further development of mussel processing, a large number ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30A23L1/33A23L1/015A23L5/20A23L17/40
Inventor 刘小兵兰余马小花刘盛兰雷燕
Owner HAINAN YEDAO (GRP) CO LTD
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