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Core-shell structured water purification bacterium capsule and preparation method thereof

A technology of core-shell structure and capsules, which is applied in the field of core-shell structure capsules embedding water purification bacteria agents and slow-release carbon sources and its preparation, which can solve problems such as settlement, reduced application effect, and loss of bacteria agents, and achieve improved stability Effects of sex, duration of action shortening, and duration of action

Inactive Publication Date: 2015-09-16
ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of ecological restoration of polluted water bodies, the artificial dosing of bacterial agents will be lost or settled to the bottom of the water along with the flow of the water body, resulting in a decrease in the application effect, which is not conducive to the fixed-point and high-efficiency performance of the bacterial agent's water purification performance

Method used

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  • Core-shell structured water purification bacterium capsule and preparation method thereof
  • Core-shell structured water purification bacterium capsule and preparation method thereof
  • Core-shell structured water purification bacterium capsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1: Mix 40g sodium citrate, 1g stearic acid, 1g calcium acetate, 1g sodium acetate, 10g calcium chloride, 15.9g bamboo charcoal, 30.0g calcium carbonate, 0.5g xanthan gum, 0.5g sodium alginate and 0.1g The sucrose is mixed well. Then add 10g of water and mix evenly to prepare a dough-like carbon source mixture.

[0029] Step 2: Press the dough-like carbon source mixture into a mold to form a column with a diameter of 1.0 cm and a height of 1.0 cm, and then dry it at 50° C. to obtain the capsule core.

[0030] Step 3: Disperse 0.5g of agar and 0.5g of sodium alginate in 100mL of water, then heat to fully dissolve the agar and sodium alginate, then add 20g of diatomaceous earth and mix evenly, after cooling to 50°C, add 0.2g of bacterial powder and Mix evenly to obtain capsule shell material, and then set aside at 45°C.

[0031] Step 4: Pour the mixed capsule shell material prepared in Step 3 into a cylindrical mold with a diameter of 1.4 cm and a height of 1.4 cm. ...

Embodiment 2

[0036] Step 1: Mix 70g sodium citrate, 1g stearic acid, 1g calcium acetate, 1g sodium acetate, 25.7g calcium chloride, 0.1g bamboo charcoal, 0.1g calcium carbonate, 0.5g xanthan gum, 0.5g sodium alginate and 0.1 g sucrose and mix well. Then add 50g of water and mix evenly to prepare a dough-like carbon source mixture.

[0037] Step 2: Press the dough-like carbon source mixture into a mold to form a column with a diameter of 50.0 cm and a height of about 50.0 cm, and then dry it at 100° C. to obtain the capsule core.

[0038] Step 3: Disperse 4.0g of agar and 5.0g of sodium alginate in 100mL of water, then heat to fully dissolve the agar and sodium alginate, then add 50g of diatomaceous earth and mix evenly, after cooling to 50°C, add 2.0g of bacteria powder and Mix evenly to obtain capsule shell material, and then set aside at 45°C.

[0039] Step 4: Pour the mixed capsule shell material prepared in Step 3 into a cylindrical mold with a diameter of 70.0 m and a height of 70.0...

Embodiment 3

[0044] Step 1: Mix 55g sodium citrate, 5g stearic acid, 1g calcium acetate, 1g sodium acetate, 23.5g calcium chloride, 5.0g bamboo charcoal, 5.0g calcium carbonate, 2.0g xanthan gum, 2.0g sodium alginate and 0.5 g sucrose and mix well. Then add 30g of water and mix evenly to prepare a dough-like carbon source mixture.

[0045] Step 2: Press the dough-like carbon source mixture into a mold to form a column with a diameter of 25.0 cm and a height of about 25.0 cm, and then dry it at 75° C. to obtain the capsule core.

[0046] Step 3: Disperse 2.0g of agar and 2.5g of sodium alginate in 100mL of water, then heat to fully dissolve the agar and sodium alginate, then add 35g of diatomaceous earth and mix evenly, after cooling to 50°C, add 1.0g of bacteria powder and Mix evenly to obtain capsule shell material, and then set aside at 45°C.

[0047] Step 4: Pour the mixed capsule shell material prepared in Step 3 into a cylindrical mold with a diameter of 35.0 m and a height of 35.0 ...

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Abstract

The invention provides a core-shell structured capsule embedding a water purification bacterium agent and slowly releasing a carbon source. The capsule has a core-shell structure, wherein the capsule core is a composite slow release carbon source, and is a pre-molded homogeneous solid mixed carbon source block; and the capsule shell is an organic-inorganic composite porous material, the water purification bacterium agent is embedded in the porous material, and the capsule is prepared through embedding the core in the shell and carrying out solidification processing molding. The core-shell structured water purification capsule is simple to process, the capsule core has a long carbon source release cycle, the capsule shell has the characteristics of high strength, good water penetration and high bacterium agent water purification activity, and the capsule is dissolved with the complete release of the soluble carbon source, so the capsule has a macroscopic self-consumption indication characteristic, and the consumption condition of the capsule can be conveniently judged by naked eyes. The capsule has high application potential in targeted efficient purifying treatment of polluted water.

Description

technical field [0001] The invention relates to the field of bacterial agent immobilization and embedding, and mainly relates to a capsule with a core-shell structure for embedding a water purifying bacterial agent and a slow-release carbon source and a preparation method thereof. Background technique [0002] Microorganisms play an irreplaceable role in the ecological restoration of polluted water bodies, and play an important role in reducing the chemical oxygen demand, ammonia nitrogen and total nitrogen of water bodies. In the process of ecological restoration of polluted water, artificial dosing of bacterial agents will be lost or settled to the bottom of the water along with the flow of water, resulting in a decrease in the application effect, which is not conducive to the fixed-point and high-efficiency performance of the bacterial agent's water purification performance. Immobilizing the water purification bacteria agent and supplementing it with a suitable carbon sou...

Claims

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Application Information

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IPC IPC(8): C02F3/34
Inventor 汤江武柳永王新孙宏姚晓红吴逸飞
Owner ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES
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