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Preparation method of maleic anhydride liquid-phase grafted basalt fiber biological carrier

A technology of basalt fiber and maleic anhydride liquid, applied in the direction of sustainable biological treatment, chemical instruments and methods, biological water/sewage treatment, etc., to achieve good chemical and biological stability, easy adhesion, good hydrophilicity and biological phase capacitive effect

Inactive Publication Date: 2020-06-23
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, in the research on the surface modification technology of basalt fiber, most of them focus on improving the mechanical properties of basalt fiber, and there are few studies on the improvement of the hydrophilicity of the surface of basalt fiber as a biological carrier.
Moreover, there is currently no relevant report on the application of maleic anhydride to the modification of basalt fiber supports.

Method used

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  • Preparation method of maleic anhydride liquid-phase grafted basalt fiber biological carrier
  • Preparation method of maleic anhydride liquid-phase grafted basalt fiber biological carrier
  • Preparation method of maleic anhydride liquid-phase grafted basalt fiber biological carrier

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Embodiment 1

[0022] (1) Weigh 40g of basalt fiber and immerse it in 500ml of acetone solution, put it into an ultrasonic cleaner for cleaning for 2 hours, take it out, wash it repeatedly with deionized water, and put it in an oven at 105°C for drying;

[0023] (2) Prepare a 0.5mol / L NaOH solution, soak the basalt fiber in the NaOH solution, take it out after 2 hours, rinse it with deionized water several times until the pH value of the rinse water is 6.5-7.5, and dry it for later use;

[0024] (3) Prepare a hydrogen peroxide solution with a concentration of 30%, soak the basalt fiber obtained in step (2) in the hydrogen peroxide solution for activation, the soaking time is 2h, and the soaking temperature is 125°C;

[0025] (4) prepare the ethyl acetate solution of maleic anhydride, take a certain amount of maleic anhydride and dissolve it in ethyl acetate, and make the ethyl acetate solution of maleic anhydride whose initial concentration is 0.1mol / L;

[0026] (5) soak the basalt fiber tha...

Embodiment 2

[0028] (1) Weigh 40g of basalt fiber and immerse it in 500ml of acetone solution, put it into an ultrasonic cleaner for cleaning for 2 hours, take it out, wash it repeatedly with deionized water, and put it in an oven at 105°C for drying;

[0029] (2) Prepare a 0.5mol / L NaOH solution, soak the basalt fiber in the NaOH solution, take it out after 2 hours, rinse it with deionized water several times until the pH value of the rinse water is 6.5-7.5, and dry it for later use;

[0030] (3) Prepare a hydrogen peroxide solution with a concentration of 30%, soak the basalt fiber obtained in step (2) in the hydrogen peroxide solution for activation, the soaking time is 2h, and the soaking temperature is 125°C;

[0031] (4) prepare the ethyl acetate solution of maleic anhydride, take a certain amount of maleic anhydride and dissolve it in ethyl acetate, and make the ethyl acetate solution of maleic anhydride whose initial concentration is 1mol / L;

[0032] (5) soak the basalt fiber that ...

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Abstract

The invention belongs to the technical field of sewage / wastewater treatment biofilm carriers, and relates to modification of inorganic basalt fiber carriers, in particular to a surface modification method of micron-sized inorganic basalt fiber carriers for sewage / wastewater treatment. The preparation method comprises the following steps: firstly, soaking basalt fibers pretreated by acetone into adilute alkali solution for etching, then activating groups on the surfaces of the basalt fibers by using a 30% hydrogen peroxide solution, soaking the basalt fibers into an ethyl acetate solution of maleic anhydride, carrying out a grafting reaction by taking concentrated hydrochloric acid as an initiator, and finally, drying to constant weight. According to the basalt fiber carrier prepared by the invention, the surface roughness is remarkably improved, and meanwhile, due to the increase of oxygen-containing functional groups on the surface of the basalt fiber, the basalt fiber carrier has good hydrophilicity and biocompatibility, so that more biomass can be loaded, higher microbial activity can be kept for a long time, and the sewage and wastewater purification effect is remarkably improved. The method disclosed by the invention is simple to operate and easy to popularize, and can be widely applied to the field of sewage and wastewater treatment biofilm carrier fillers.

Description

[0001] Field [0002] The invention belongs to the technical field of biofilm carriers for sewage / wastewater treatment, and relates to the modification of inorganic basalt fiber carriers, in particular to a method for surface modification of micron-scale inorganic basalt fiber carriers for sewage / wastewater treatment. Background technique [0003] Basalt fiber is a kind of flexible inorganic fiber, which has the advantages of large specific surface area, high mechanical strength, good chemical and biological stability, etc., and has the general characteristics as a biological carrier. In addition, the source of basalt fiber is sufficient, the price is low, and it has my country's independent intellectual property rights, which provide important advantages for its wide application. The Chinese invention patent "A Biological Carrier for Water Purification" (CN104176822A) reveals that basalt fiber can be used as a biofilm carrier material for water purification, and has the chara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/10C02F3/28
CPCC02F3/00C02F3/107C02F3/2806Y02W10/10
Inventor 黄娟黄敏杰肖君王鸣宇
Owner SOUTHEAST UNIV
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