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Preparation method of epsilon-polylysine supported activated carbon for water purifier

A polylysine and activated carbon technology, applied in the field of activated carbon, can solve the problems of weak bacteriostatic ability of bacteriostatic agents, shedding of bacteriostatic agents, secondary microbial contamination, etc., and achieves elimination of secondary pollution, good bacteriostatic effect, high safety effect

Inactive Publication Date: 2019-03-15
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although there are many ways to load activated carbon with antibacterial agents, some antibacterial agents will inevitably fall off or dissolve harmful components during long-term use, such as methyl acrylate and Ag ions. Long-term drinking is not good for human health; The antibacterial ability of the antibacterial agent is relatively weak, such as chitosan, there is still secondary microbial pollution of water quality

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The invention provides a method for preparing activated carbon for water purifiers loaded with ε-polylysine, comprising the following steps:

[0031] S1: first place 10g of activated carbon in 20g of 5wt% sodium hydroxide solution and boil for 2 hours, then soak the boiled activated carbon in distilled water for 5 hours, and finally wash repeatedly with distilled water until neutral;

[0032] S2: immerse the activated carbon obtained in step S1 in 20 g of ε-polylysine solution with a concentration of 1 wt % for 10 h, then filter the impregnated activated carbon and wash it repeatedly with distilled water until neutral;

[0033] S3: Expose the activated carbon obtained in step S2 to the sun until the water content is 20%, and then dry it with a dryer until the water content is 5%, and the drying temperature is 80°C.

Embodiment 2

[0035] The invention provides a method for preparing activated carbon for water purifiers loaded with ε-polylysine, comprising the following steps:

[0036] S1: first place 10g of activated carbon in 10g of 8wt% sodium hydroxide solution and boil for 3 hours, then soak the boiled activated carbon in distilled water for 4 hours, and finally wash repeatedly with distilled water until neutral;

[0037] S2: immerse the activated carbon obtained in step S1 in 20 g of ε-polylysine solution with a concentration of 1.5 wt% for 12 hours, then filter the impregnated activated carbon and wash it repeatedly with distilled water until neutral;

[0038] S3: Expose the activated carbon obtained in step S2 to the sun until the water content is 20%, and then dry it with a dryer until the water content is 8%, and the drying temperature is 85°C.

Embodiment 3

[0040] The invention provides a method for preparing activated carbon for water purifiers loaded with ε-polylysine, comprising the following steps:

[0041] S1: first place 10g of activated carbon in 30g of 4wt% sodium hydroxide solution and boil for 1.5h, then soak the boiled activated carbon in distilled water for 3h, and finally wash repeatedly with distilled water until neutral;

[0042] S2: immerse the activated carbon obtained in step S1 in 15 g of ε-polylysine solution with a concentration of 1 wt % for 10 h, then filter the impregnated activated carbon and wash it repeatedly with distilled water until neutral;

[0043] S3: Expose the activated carbon obtained in step S2 to the sun until the water content is 18%, and then dry it with a dryer until the water content is 6%, and the drying temperature is 90°C.

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Abstract

The invention provides a preparation method of epsilon-polylysine supported activated carbon for a water purifier. The method comprises the following steps: S1, boiling activated carbon in a sodium hydroxide solution, then soaking the boiled activated carbon in distilled water, and finally washing the activated carbon with the distilled water repeatedly until the activated carbon becomes neutral;S2, impregnating the activated carbon obtained in S1 with an epsilon-polylysine solution, filtering the impregnated activated carbon and washing the activated carbon with the distilled water repeatedly until the activated carbon becomes neutral; S3, exposing the activated carbon obtained in S2 to the sun until water content is 25% or lower, and then drying the activated carbon with a dryer until water content is 8% or lower. The epsilon-polylysine supported activated carbon for the water purifier has the bacteriostatic ability and can eliminate secondary pollution caused by microbial reproduction in a deep purification process of drinking water. Epsilon-polylysine can serve as a food additive, so that even trace epsilon-polylysine falls off or is dissolved out, epsilon-polylysine cannot beharmful to human health.

Description

technical field [0001] The invention relates to the technical field of activated carbon, in particular to a method for preparing activated carbon for water purifiers loaded with ε-polylysine. Background technique [0002] At present, household water purifiers generally use activated carbon adsorption technology. As an adsorbent, activated carbon has a huge specific surface area, exhibits good adsorption performance, has the advantages of large adsorption capacity, acid and alkali resistance, and good chemical stability. However, using activated carbon to purify water has an obvious problem, that is, secondary microbial pollution of water quality. Because in the process of activated carbon treatment of water, the microorganisms adsorbed by the activated carbon can multiply rapidly on the surface of the activated carbon, thus covering the surface of the activated carbon, which reduces the adsorption capacity of the activated carbon. pollute. [0003] Chinese patent CN105214...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/30C02F1/28C02F1/50
CPCB01J20/20B01J20/262C02F1/283C02F1/285C02F1/50
Inventor 阳文静游清徽
Owner JIANGXI NORMAL UNIV