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Bagasse fiber extraction method

A technology of bagasse fiber and extraction method, which is applied in fiber raw material processing, textiles and papermaking, etc., can solve problems such as unsuitable requirements and small specific surface area, and achieve the effect of improving extraction rate, increasing specific surface area, and wide application prospects

Inactive Publication Date: 2020-08-14
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing treatment methods have a small specific surface area and do not meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Take 5 g of air-dried bagasse in a beaker, wash it with water until the filtrate has no tan, filter and air-dry it to a water content of 75%, add 20 ml of dilute nitric acid solution with a concentration of 0.12 g / ml and react in a magnetic stirrer 3h, the reaction temperature was kept at 80°C.

[0018] (2) The bagasse after the acid treatment in the above (1) is moved to a 300-600 mesh pulp bag for sufficient soaking and washing, until the pH value of the washing liquid is within the range of 7.0, the bagasse after cleaning is dispersed into small pieces Then place it in a tray for air-drying until the moisture content is within 75%.

[0019] (3) Move the bagasse dried in the above step (2) to a beaker, add a mixed solution of 2.5% NaOH and 0.8 g anhydrous sodium sulfite, and magnetically stir for 3 hours, and keep the reaction temperature at 80°C.

[0020] (4) The above (3) is subjected to suction filtration, and the obtained filter residue is repeatedly soaked a...

Embodiment 2

[0022] (1) Take 5g air-dried bagasse in a beaker, wash it with clear water until the filtrate has no tan, filter and air-dry it to a water content of 80%, add 20ml of dilute nitric acid solution with a concentration of 0.15g / ml and react in a magnetic stirrer 3h, the reaction temperature was kept at 80°C.

[0023] (2) The bagasse after the acid treatment in the above (1) is moved to a 300-600 mesh pulp bag for sufficient soaking and washing, until the pH value of the washing liquid is within the range of 7.0, the bagasse after cleaning is dispersed into small pieces Then place it in a tray for air-drying until the moisture content is within 80%.

[0024] (3) Move the bagasse dried in the above step (2) to a beaker, add a mixed solution of 2.5% NaOH and 0.8 g anhydrous sodium sulfite, and magnetically stir for 3 hours, and keep the reaction temperature at 80°C.

[0025] (4) The above (3) is subjected to suction filtration, and the resulting filter residue is repeatedly soaked ...

Embodiment 3

[0027] (1) Take 5g air-dried bagasse in a beaker, wash it with clear water until the filtrate has no tan, filter and air-dry it to a water content of 90%, add 20ml of dilute nitric acid solution with a concentration of 0.15g / ml and react in a magnetic stirrer 3h, the reaction temperature was kept at 80°C.

[0028] (2) The bagasse after the acid treatment in the above (1) is moved to a 300-600 mesh pulp bag and fully soaked and washed until the pH value of the washing liquid is within the range of 6.0, and the cleaned bagasse is dispersed into small pieces Then place it in a tray for air-drying until the moisture content is within 90%.

[0029] (3) Move the bagasse dried in the above step (2) to a beaker, add a mixed solution of 2.5% NaOH and 1 g of anhydrous sodium sulfite, magnetically stir for 3 hours, and keep the reaction temperature at 80°C.

[0030] (4) The above (3) was subjected to suction filtration, and the obtained filter residue was repeatedly soaked and washed wi...

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PUM

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Abstract

The invention discloses a bagasse fiber extraction method, and belongs to the field of crop straw biomass engineering, and the bagasse fiber extraction method comprises: taking air-dried bagasse, washing with distilled water until washing liquid is not yellowish-brown, filtering, air-drying, adding a dilute nitric acid solution, and carrying out a reaction in a magnetic stirrer; repeatedly soakingand washing the bagasse subjected to acid treatment with deionized water, dispersing the cleaned bagasse into small pieces, and then putting the small pieces into a tray for air-drying treatment; adding the dried bagasse into a mixed solution of NaOH and anhydrous sodium sulfite, and carrying out magnetic stirring reaction; performing suction filtration, repeatedly soaking and washing obtained filter residues with distilled water, performing suction filtration again, transferring the obtained filter residues to a tray, and performing drying treatment in a drying oven to obtain a product, namely the target product bagasse cellulose. The extraction method disclosed by the invention has the effects of higher bagasse cellulose yield and increase of the specific surface area of the pretreatedfiber, and the obtained bagasse cellulose has a wide application prospect.

Description

technical field [0001] The invention relates to the field of crop straw biomass chemical engineering, in particular to a method for extracting bagasse fibers. Background technique [0002] Cellulose is the most widely distributed and abundant natural polymer in nature, accounting for more than 50% of the carbon content in the plant kingdom. In the context of the increasingly scarce petroleum resources in the world, more and more attention has been paid to biomaterials such as cellulose, which is green, environmentally friendly, renewable, and has huge reserves. However, due to the strong hydrogen bonding between cellulose, the chemical properties of cellulose are very stable, making it difficult to process and utilize. Natural cellulose raw materials contain a large amount of hemicellulose and cellulose, cellulose exists in the intercellular layer of plant cells, and they co-exist in the cell structure of plants to form a firm whole. Therefore, in order to efficiently util...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21C5/00
CPCD21C5/00
Inventor 王南南朱艳秋李雨君满泉言陈丁
Owner GUANGXI UNIV