Biological activated carbon fibe, ecological carbon fiber composite comprising the same and preparation method thereof

A fiber composite material, biological activated carbon technology, applied in the direction of chemical characteristics of fibers, chemical instruments and methods, synthetic resin layered products, etc. Due to the low strength of carbon fiber, it is difficult to store sludge, easy to clean and maintain, and has good compatibility.

Inactive Publication Date: 2012-09-12
浙江欣之球科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The bioactive carbon fiber preparation method provided in the above-mentioned patent is complicated, and the surface energy of the bioactive carbon fiber prepared by this method is still not high, and further improvement is needed; at the same time, the bioactive carbon fiber prepared by this method has low strength , poor impact resistance, not suitable for the treatment of a large amount of sewage
[0008] Based on some deficiencies of the current bioactive carbon fiber, there is no report on its application as a biofilm carrier in water treatment

Method used

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preparation example Construction

[0027] In a typical implementation of the present invention, a method for preparing bioactive carbon fibers comprises the following steps: gradually heating polyacrylonitrile fibers, viscose fibers or pitch fibers to 200°C at a rate of 3-5°C / min. After ~300°C, carry out pre-oxidation treatment for 50-150 minutes to form pre-oxidized wire; gradually heat up the pre-oxidized wire to 700-800°C at a rate of 10-30°C / min under nitrogen atmosphere, and then use water vapor As an activator, carbonization and activation treatment is performed for 30 to 90 minutes to form bioactive carbon fibers. In the preparation process, water vapor is used as an activator, and no accelerator and catalyst are used in the whole process to avoid secondary pollution.

[0028] The aforementioned bioactive carbon fibers use polyacrylonitrile fibers, viscose fibers or pitch fibers as carbon fiber raw materials, and these raw materials can exhibit excellent performance after being treated by the preparation...

Embodiment 1

[0055] Raw material: polyacrylonitrile fiber (production company: Changzhou Bangguan Chemical Co., Ltd.).

[0056] Preparation:

[0057] After the polyacrylonitrile fiber is gradually heated up to 200°C at a rate of 3°C / min, it is pre-oxidized for 50 minutes to form a pre-oxidized filament; the pre-oxidized filament is gradually heated up at a rate of 10°C / min in a nitrogen atmosphere After reaching 700°C, use water vapor as an activating agent to perform carbonization and activation treatment for 30 minutes to form bioactive carbon fibers.

[0058] The biologically active carbon fibers are treated with ultrasonic waves with a frequency of 50KHz for 10 minutes in a mixed solution of a 30% hydrogen peroxide solution and a 25% ammonia solution with a volume ratio of 1:2 for surface active treatment. , forming sample 1.

Embodiment 2

[0060] Raw material: viscose fiber (manufacturing company: Shandong Hailong Co., Ltd.).

[0061] Preparation:

[0062] After the viscose fiber is gradually heated to 300°C at a rate of 5°C / min, a pre-oxidation treatment is carried out for 150 minutes to form a pre-oxidized filament; the pre-oxidized filament is gradually heated at a rate of 30°C / min under a nitrogen atmosphere. After heating up to 800°C, use water vapor as an activator to conduct carbonization and activation treatment for 90 minutes to form bioactive carbon fibers.

[0063] The bioactive carbon fiber is treated with a frequency of 100KHz in a hydrogen peroxide solution with a concentration of 30% for 60 minutes to perform the first surface active treatment; In 28% ammonia solution, ultrasonic wave with a frequency of 100KHz was used for 60 minutes to perform the second surface active treatment to form sample 2.

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Abstract

The invention provides a biological activated carbon fiber, an ecological carbon fiber composite comprising the same and a preparation method thereof. The preparation method of the biological activated carbon fiber comprises the steps of, after polyacrylonitrile fibre, the viscose fiber and the pitch fiber to 200 to 300 DEG C in the rate of 3 to 5 DEG C / min, performing preoxidation treatment for 50 to 150 min and to form a preoxidized fiber; in a nitrogen atmosphere, gradually warming the preoxidized fiber to 700 to 800 DEG C in the rate of 10 to 30 DEG C / min, performing charring and activating treatment for 30 to 90 min using water vapor as an activator, to form the biological activated carbon fiber. The specific surface area of the biological activated carbon fiber is more than 1000 m2 / g and is reasonable in pore size distribution and high in adsorbability. By adopting the biological activated carbon fiber in sewage disposal, a membrane structure can be formed and the removal rates of CODcr and ammonia nitrogen can both be evidently enhanced after membrane formation.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a biologically active carbon fiber, an ecological carbon fiber composite material including the same, and a preparation method thereof. Background technique [0002] Activated carbon fiber (ACF) is a new type of high-efficiency adsorption material developed and gradually industrialized in the 1970s. It is the third-generation product after powdered activated carbon and granular activated carbon. It is carbon fiber and carbonizable fiber after physical activation and chemical activation. The functional carbon fiber with rich and well-developed void structure prepared by the activation reaction of both, it has a unique chemical and physical structure, especially its excellent adsorption and biocompatibility, moldability, acid resistance It has the characteristics of alkalinity, electrical conductivity and chemical stability. It not only has a large specific surface, moderate pore si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F9/22D01F9/16D01F9/145D01F11/12D01F11/16B32B27/12B32B27/02B32B27/32B32B3/12C02F1/28
Inventor 赵东林海热提·吐尔逊吴伟明何江
Owner 浙江欣之球科技发展有限公司
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