Preparation method of modified coconut shred material for artificial fish nest

A technology of artificial fish and shredded coconut, applied in the application, fish farming, climate change adaptation and other directions, can solve the problems of natural plant materials such as odor, small specific surface area, poor hydrophilicity, etc., to reduce the content of hot water extract, The effect of enlarging the specific surface area and improving the adhesion amount

Active Publication Date: 2022-03-04
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that existing artificial fish nest materials have artificial materials with poor hydrophilicity, natural plant materials with odor, small specific surface area and perishable problems. And provide a kind of preparation method for the modified coir material of artificial fish nest

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0020] The specific embodiment one: a kind of preparation method of the modified coconut shred material that present embodiment is used for artificial fish nest, it realizes according to the following steps:

[0021] 1. Pretreatment: After the agricultural waste shredded coconut is cleaned, it is dehydrated through a dehydrator and a screw dehydrator in turn until the water content is less than 50%, and dehydrated shredded coconut is obtained;

[0022] 2. Extraction and kneading and grinding: put the dehydrated shredded coconut in 1# presoaker and add absolute ethanol for organic extraction. After the end, dehydrate through a screw dehydrator until the water content is less than 50% to obtain a solid Shredded coconut, put it into 2# presoaker, then add KOH solution with a mass fraction of 1-5% for alkali extraction, and then dehydrate it through a screw dehydrator until the water content is less than 50%, then knead and grind Solution, obtain modified shredded coconut, promptl...

specific Embodiment approach 2

[0024] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the parameter requirements of the agricultural waste shredded coconut described in step one: the water content is less than 20%, the coconut peat content is less than 15%, and the fibril dispersion rate is 90% ~95%. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the cleaning in step 1 uses a grass washer or a low-consistency hydraulic pulper. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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PUM

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Abstract

The invention discloses a preparation method of a modified coconut shred material for an artificial fish nest, and relates to material modification of the artificial fish nest. The problems that an existing artificial fish nest material is poor in artificial material hydrophilicity, and a natural plant material is odorous, small in specific surface area and prone to decay are solved. The method comprises the following steps: 1, washing coconut shreds and dehydrating; and 2, sequentially carrying out organic extraction, dehydration, alkali extraction, dehydration and kneading and grinding on the dehydrated coconut shreds to obtain the modified coconut shreds. According to the modified coconut shred material for the artificial fish nest, the fish egg attachment effect is good, and the attachment amount of fish eggs per mu is increased by 25%-35%; the aquatic environment is effectively improved, and the CODMn of the water body is reduced by 12% 10 days after the artificial fish nest is hung; and the service life is long, and the service cycle is prolonged from 2-3 years to 4-10 years. The preparation process is simple and stable, the process is green and environment-friendly, the cost is low, resource utilization of the coconut shred fibers is achieved, and the method is suitable for application and popularization. The modified coconut shred material is suitable for manufacturing the artificial fish nest.

Description

technical field [0001] The invention relates to material modification of an artificial fish nest. Background technique [0002] In recent years, fishery resource proliferation and habitat restoration are one of the important contents of aquatic ecological restoration in my country at the present stage. Due to differences in spawning types and reproductive ecological habits, the optimal resource recovery methods are not the same. Fishes that lay sticky eggs, such as carp and crucian carp, are important groups of river fishes, and their role in the ecosystem cannot be ignored. Under natural conditions, during the breeding season, fish will concentrate from deep water areas to nearshore shallow waters with lush vegetation for spawning and reproduction, and the fish eggs produced will adhere to aquatic plants and hatch into membranes. Due to the reduction of aquatic plants, the area of ​​spawning grounds of sticky egg-laying fishes is reduced or lost, so artificial interventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/70
CPCA01K61/70Y02A40/81
Inventor 黄晓丽霍堂斌金星岳金权赵晨王慧博
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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