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Microwave-assisted method for preparing mixed solid acid from fishbone

A microwave-assisted, solid acid technology is applied in the field of green conversion and utilization of biomass and environmental protection, which can solve the problems of large demand for fish bone carbon and limited effect, and achieve high cost performance, small environmental footprint, and simple synthesis process. Effect

Pending Publication Date: 2022-07-29
SHIHEZI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is mainly to use the organic matter in the fish bone for high-temperature carbonization to form fish bone biochar, and the organic matter content in the fish bone is as low as 5%. The fish bone carbon prepared by this method not only requires a large amount but also has good effect. Very limited

Method used

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  • Microwave-assisted method for preparing mixed solid acid from fishbone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Example 1. Preparation of high white salmon bone complex solid acid.

[0056] (1) After washing and air-drying, the raw material of high white salmon bone is crushed to a particle size of 1mm-25mm for use. The high white salmon bone comes from the high white salmon processing solid waste provided by Sailimu Lake Fishery Company.

[0057] (2) Take high white salmon bone granules and concentrated sulfuric acid, and soak them for 12 hours according to the ratio of fish bone to concentrated sulfuric acid at a weight ratio of 1:1.

[0058] (3) Take the soaked high white salmon bone pellets, wash them with deionized water three times that of concentrated sulfuric acid, and then dry them in a hot air dryer at 95°C for 18 hours before use.

[0059] (4) Preparation of fishbone composite solid acid crude product: take the dried high white salmon bone particles in step (3), place it in a closed microwave reactor cavity, fill with nitrogen to exhaust air, turn on the microwave gen...

Embodiment 2

[0064] Example 2. Preparation of silver carp and bighead carp bone composite solid acid.

[0065] (1) The raw material of silver carp and bighead carp bone is washed and air-dried, and then pulverized to a particle size of 1mm-25mm for use. Said silver carp and bighead carp bone is from the solid waste of silver carp and bighead processing.

[0066] (2) Take silver carp and bighead carp bone particles and concentrated sulfuric acid, and soak them for 12 hours according to the ratio of fish bone to concentrated sulfuric acid weight of 1:5.

[0067] (3) Take the soaked silver carp and bighead carp bone pellets, wash with deionized water three times that of concentrated sulfuric acid, and then dry in a hot air dryer at 60°C for 24 hours before use.

[0068] (4) Preparation of fish-bone composite solid acid crude product: take the dried silver carp and bighead carp bone particles in step (3), place it in a closed microwave reactor cavity, fill with nitrogen to exhaust air, turn o...

Embodiment 3

[0073] Example 3. Preparation of rainbow trout bone composite solid acid.

[0074] (1) The raw materials of rainbow trout bones are washed and air-dried, and then pulverized to a particle size of 1mm-25mm for use.

[0075] (2) Take rainbow trout bone particles and concentrated sulfuric acid, and soak them for 12 hours according to the weight ratio of fish bone to concentrated sulfuric acid of 1:0.5.

[0076] (3) Take the soaked rainbow trout bone pellets, wash them with deionized water three times that of concentrated sulfuric acid, and then dry them in a hot air dryer at 105°C for 6 hours before use.

[0077] (4) Preparation of fishbone composite solid acid crude product: take the dried rainbow trout bone particles in step (3), place them in a closed microwave reactor cavity, fill with nitrogen to discharge the air, turn on the microwave generator, and set the reaction temperature 750 ℃, microwave output power 500w / kg, reaction time is 20min; after the reaction is completed...

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Abstract

A microwave-assisted method for preparing mixed solid acid from fishbone comprises the following steps: by taking fishbone solid waste as a raw material, rapidly carbonizing the fishbone solid waste in a microwave system to form fishbone biochar by utilizing the characteristics of selective heating of microwaves and wave absorption of organic matters in the fishbone, and enabling the whole fishbone to rapidly reach a molecular sieve activation temperature by utilizing the good wave absorption property of the biochar; thus, the fishbone solid acid is prepared. The fishbone solid acid prepared by the invention has dual characteristics of carbon-based solid acid and molecular sieve type solid acid, and can make up for the defects of the two solid acids. A wider thought can be provided for processing and application of the fishbone material.

Description

technical field [0001] The invention belongs to the technical field of biomass green conversion and utilization and environmental protection, and relates to a method for preparing fish bone solid acid. Background technique [0002] At present, the utilization of fish bone materials mainly focuses on the extraction of nutrients in fish bones: fish bone polypeptides (CN201510498965.2; CN201510498969.0; CN201610032440.4) and so on. The research on the preparation of fish bone materials mainly focuses on fish bone carbon (CN201711242215.4; CN201710899492.6) and fish bone biomimetic materials (CN201820488531.3; CN201620389484.8). For example, the Chinese invention patent application CN201510331225.X discloses a preparation method of a fishbone carbon adsorbent: the fishbone is pulverized into fishmeal, and then carbonized for the adsorption of heavy metals in polluted water bodies. The process is mainly to use the organic matter in the fishbone to carbonize at high temperature t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/12
CPCB01J19/126
Inventor 赵云峰杨杰张建舒东王超叶孙凤霞
Owner SHIHEZI UNIVERSITY
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