Preparation method of hydrophilic chitosan modified basalt fiber support

A basalt fiber, chitosan modification technology, applied in fiber treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of poor surface hydrophilicity and few surface active groups, and achieve low cost, Improves hydrophilicity and accelerates growth

Inactive Publication Date: 2018-07-27
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the above-mentioned prior art, the present invention discloses a method for preparing a hydrophilic chitosan-modified basalt fiber carrier, the purpose of which is to improve the biocompatibility of basalt fiber and to overcome the surface active radicals of basalt fiber. Disadvantages of few clusters and poor surface hydrophilicity

Method used

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  • Preparation method of hydrophilic chitosan modified basalt fiber support
  • Preparation method of hydrophilic chitosan modified basalt fiber support
  • Preparation method of hydrophilic chitosan modified basalt fiber support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation method of hydrophilic chitosan modified basalt fiber carrier, comprises the steps:

[0029] (1) Prepare a 0.5mol / L KOH solution, soak the basalt fiber (BF) in the KOH solution, take it out after 1 hour, rinse it with deionized water until neutral, and dry it for later use;

[0030] (2) preparation concentration is 0.2wt.% CH 3 COOH solution, weigh a certain amount of chitosan and dissolve it in CH 3 In the COOH solution, stir for 3h to obtain a chitosan solution with a concentration of 0.5wt.%.

[0031] (3) Soak the dried basalt fiber in step (1) in the chitosan solution in step (2), take it out after soaking at room temperature for 2h, and move it to a vacuum oven for drying to obtain modified basalt fiber Vector (MBF-1);

[0032] The basalt fibers (BF and MBF-1) before and after modification were made into umbrella-shaped carriers, and the film-hanging experiments were carried out on the two carriers. The amount of microbial attachment is rep...

Embodiment 2

[0034] A kind of preparation method of hydrophilic chitosan modified basalt fiber carrier, comprises the steps:

[0035] (1) Prepare a 1mol / L NaOH solution, soak the basalt fiber (BF) in the NaOH solution, take it out after 0.5h, rinse it with deionized water until neutral, and dry it for later use;

[0036] (2) preparation concentration is 0.2wt.% CH 3 COOH solution, weigh a certain amount of chitosan and dissolve it in CH 3 In the COOH solution, stir for 5h to obtain a chitosan solution with a concentration of 1.5wt.%.

[0037] (3) Soak the dried basalt fiber in step (1) in the chitosan solution in step (2), take it out after soaking at room temperature for 4h, and move it to dry in a vacuum oven to obtain modified basalt fiber Vector (MBF-2).

[0038] The basalt fibers (BF and MBF-2) before and after modification were made into umbrella-shaped carriers, and the film-hanging experiments were carried out on the two carriers. The amount of microbial attachment is represent...

Embodiment 3

[0040] A kind of preparation method of hydrophilic chitosan modified basalt fiber carrier, comprises the steps:

[0041] (1) Prepare a 1mol / L NaOH solution, soak the basalt fiber in the NaOH solution, take it out after 1h, rinse it with deionized water until neutral, and dry it for later use;

[0042] (2) preparation concentration is 0.2wt.% CH 3 COOH solution, weigh a certain amount of chitosan and dissolve it in CH3 In the COOH solution, stir for 4h to obtain a chitosan solution with a concentration of 1.5wt.%.

[0043] (3) Soak the dried basalt fiber in step (1) in the chitosan solution in step (2), take it out after soaking at room temperature for 2h, and move it to a vacuum oven for drying to obtain modified basalt fiber Vector (MBF-3).

[0044] The basalt fibers (BF and MBF-3) before and after modification were made into umbrella-shaped carriers, and the film-hanging experiments were carried out on the two carriers. The amount of microbial attachment is represented by...

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Abstract

The invention belongs to the technical field of sewage treatment and inorganic fiber modification, and relates to surface modification of basalt fibers, in particular to a preparation method of a hydrophilic chitosan modified basalt fiber support. The method comprises the following steps: firstly, etching is performed on the surfaces of the basalt fibers with alkali liquor, and the fibers are washed with deionized water to be neutral, dried and activated; then physical coating is performed, chitosan is taken as a modifier, the etched and dried basalt fibers are soaked in a chitosan solution, and the hydrophilic polymer modified basalt fiber support material is prepared. The method is simple in process, convenient to operate, suitable for industrial production and easy to popularize. The prepared modified basalt fiber support can keep original properties such as high specific surface area, excellent mechanical property, acid-base resistance and the like of the basalt fibers; a contact angle can be reduced, hydrophilicity of the basalt fibers is improved, adhesion of microbes on support surface is promoted, growth of a biofilm is accelerated, a biofilm formation period is shortened,capacity and activity of the microbes are increased, water purification efficiency is increased, and higher reuse rate is realized.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and inorganic fiber modification, and relates to a method for surface modification of basalt fiber, in particular to a method for preparing a hydrophilic chitosan-modified basalt fiber carrier. Background technique [0002] Biofilm method is a commonly used biological treatment method in sewage / wastewater treatment. Its essence is that microorganisms attach and grow on the surface of the carrier to form a biofilm, and then use the metabolism of microorganisms to adsorb and decompose organic matter in sewage / wastewater. The carrier is the habitat for the growth and reproduction of biofilm. The surface properties of the carrier material can directly affect the growth and reproduction of microorganisms, and then affect the type, quantity, activity, mass transfer effect and sewage / wastewater treatment efficiency of microorganisms in the generated biofilm. , so the carrier is the core part of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/03D06M11/38C02F3/00
CPCC02F3/00D06M11/38D06M15/03
Inventor 吴智仁张晓颖周向同李姗蔚荣新山罗志军
Owner JIANGSU UNIV
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