Bio-active carbon fibre and its preparing process

A technology of biological activated carbon and carbon fiber, which is applied in fiber treatment, fiber chemical characteristics, ultrasonic/sonic fiber treatment, etc. Excellent capacitive effect

Inactive Publication Date: 2001-12-26
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because these metals, especially alkali metals, have a sterilizing effect, they cannot meet the needs of microbial immobilization, and are not suitable for microbial immobilization.
Activated carbon fiber as a biological carrier and its special requirements for the surface properties of the material have not been reported so far

Method used

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  • Bio-active carbon fibre and its preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019]The polyacrylonitrile copolymer fiber (its single-filament hole number is 3000, denier 1.1 denier (1.22dtex)) that the commercially available British courtaulds company of election wet spinning is produced contains more than 90% acrylonitrile monomer component ( By weight) is: acrylonitrile 96, methylene succinic acid 1, methyl acrylate 3, equilibrium moisture content 0.67%. The non-melting treatment is carried out at 220-280 ° C, the heat treatment atmosphere is air, the treatment time is 60 minutes, and the heating rate 1.0°C / min. Fiber deformation +10%, to obtain polyacrylonitrile non-melting fibers with an equilibrium moisture content of 6.9% and a fiber oxygen content of 9.5%. Carbonize and activate the fibers at 300-800°C. Control the carbonization heating rate to 80 °C / min, activation temperature 800 °C, activation time 30 minutes, obtain equilibrium moisture content 29.7%, fiber oxygen content 20.4%, tensile strength 489Mpa, specific surface area 1326m 2 / g of ac...

Embodiment 2

[0021] Except that it does not melt and the heating rate, all the other operating conditions are the same as in Example 1. The non-melting heating rate is reduced by one time than that of Example 1, and the non-melting fiber with an equilibrium moisture content of 10.5% and a fiber oxygen content of 16.2% is obtained, and an equilibrium moisture content of 32.9%, a fiber oxygen content of 25.1%, a tensile strength of 365Mpa and a specific Surface area 1358m 2 / g of bioactive carbon fiber. Because the heating rate of the non-melting treatment of the polyacrylonitrile fiber is low and the time of the fiber non-melting is long, the biocompatibility of the activated carbon fiber is excellent.

Embodiment 3

[0023] Except that it does not melt and the heating rate, all the other operating conditions are the same as in Example 1. The non-melting heating rate was increased to 1.5°C / min to obtain non-melting fibers with an equilibrium moisture content of 5.4% and a fiber oxygen content of 7.4%, as well as an equilibrium moisture content of 24.3%, a fiber oxygen content of 21.1%, a tensile strength of 324Mpa and a specific surface area 1123m 2 / g of activated carbon fiber. The biocompatibility of activated carbon fibers decreased due to the rapid heating rate of polyacrylonitrile fibers in non-melting treatment. The biocompatibility of the bioactive carbon fiber still meets the requirements.

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Abstract

A biologic activated carbon fibre for attaching microbes to it is prepared through fusion-free treatment of raw material at heating speed of 0.5-2 deg.C per min to obtain fusion-free fibre, charring at 300-1100 deg.C and heating speed of 80-160 deg.C / min, and activating at 800-950 deg.C for 5-60 min, wheere fatty acid is used as activation promoter and the ultrasonic waves are used while dipping.Its advantages include no metal compound, more than 20% of water content, 150 MPa of tension strength, 2.8-25 % of oxygen content, and excellent biologic compatibility.

Description

(1) Technical field [0001] The invention relates to an activated carbon fiber for fixing microorganisms and a preparation method thereof. The bioactive carbon fiber prepared by the invention can be used as a carrier for immobilizing microorganisms in water pollution control, biochemical reaction, food fermentation and the like. (2) Background technology [0002] The development of carriers with good performance is one of the most important technologies in the study of immobilized microorganism technology. The performance of the carrier is directly related to the strength of immobilized microorganisms and the activity of microorganisms. In the past, fist-shaped carriers were commonly used, such as gravel, pebbles, slag, coke, etc. In the mid-1950s, the introduction of hard plastic components made the application of plastic carriers gradually surpass that of traditional stone carriers. At present, plastic honeycomb fillers, soft or semi-soft fiber fillers, hollow microporous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/14D06M10/02D06M13/184
Inventor 刘杰
Owner BEIJING UNIV OF CHEM TECH
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