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Method for preparing granular modified abandoned leather fluorinion adsorbing material

A technology of adsorption material and fluorine ion, which is applied in the field of preparation of fluoride ion adsorption material, to achieve the effect of convenient processing, high solution cost and easy clogging

Inactive Publication Date: 2015-10-21
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, excessive intake of fluorine (fluorine content higher than 1.5mg / L) can lead to various diseases, such as osteoporosis, arthritis, bone brittleness, cancer, Alzheimer's disease, thyroid disease, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Wash and cut waste pigskin into 0.1cm×0.3cm granular shape, and dry at 50°C for 12 hours; soak 1 part of granular pigskin and 30 parts of ultrapure water at 25°C for 12 hours according to the weight ratio, and then add The weight ratio of granular pigskin is 0.6 part of 3% glyoxylic acid solution, stirred and reacted at 40°C for 5 hours, filtered and washed; all the waste pigskin prepared in step 2 is immersed in 0.5% zirconium nitrate solution , at 25°C, 160r / min shaking reaction for 1h, filter and wash, and dry at 50°C for 12h to obtain granular modified waste leather fluoride ion adsorption material.

Embodiment 2

[0016] Example 2: Wash and cut waste cowhide into 0.1cm×0.1cm granular shape, and dry at 70°C for 12 hours; soak 3 parts of granular cowhide and 50 parts of ultrapure water at 25°C for 24 hours according to the weight ratio, and then add granular cowhide 5% glyoxylic acid solution with a weight ratio of 1 part, stirred and reacted at 60°C for 5h, filtered and washed; all the granular carboxylated and modified waste cowhide prepared in step 2 were immersed in 1% lanthanum nitrate solution, and heated at 25°C , 160r / min shaking reaction for 24h, filter and wash, and dry at 70°C for 12h to obtain granular modified waste leather fluoride ion adsorption material.

Embodiment 3

[0017] Example 3: Wash the waste sheepskin and cut it into 0.3cm×0.3cm granular shape, and dry it at 60°C for 12 hours; soak 2 parts of granular sheepskin and 40 parts of ultrapure water at 25°C for 18 hours according to the weight ratio, and then add granular sheepskin 0.8 parts by weight of 4% glyoxylic acid solution, stirred and reacted at 50°C for 5h, filtered and washed; all the granular carboxylated and modified waste sheepskin prepared in step 2 were immersed in 0.7% cerium nitrate solution, at 25°C , 160r / min shaking reaction for 12h, filter and wash, and dry at 60°C for 12h to obtain granular modified waste leather fluoride ion adsorption material.

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Abstract

The invention discloses a method for preparing a granular modified abandoned leather fluorinion adsorbing material. The method includes three steps in sequence that firstly, abandoned leather is cleaned and sheared into particles with the size of 0.1-0.3 cm*0.1-0.3 cm and is dried for 12 hours at the temperature of 50-70 DEG C; secondly, 1-3 weight parts of the granular abandoned leather and 30-50 weight parts of ultrapure water are soaked for 12-24 hours at the temperature of 25 DEG C, and 0.6-1 weight part of 3%-5% glyoxylic acid solution is added into the granular leather to be stirred and reacted for 5 hours at the temperature of 40-60 DEG C; thirdly, the modified abandoned leather prepared in the second step is completely soaked into a 0.5%-1% metal salt solution and is oscillated and reacted for 1-24 h at the temperature of 25 DEG C and the speed of 160 r / min, filtering cleaning is conducted, drying is conducted for 12 hours at the temperature of 50-70 DEG C, and therefore the granular modified abandoned leather fluorinion adsorbing material is obtained.

Description

technical field [0001] The invention relates to the preparation of an adsorption material from waste leather, in particular to a preparation method of a fluoride ion adsorption material. Background technique [0002] Animal hides, the renewable biomass resources with the largest amount of resources in the world, are mainly used in the tanning industry. The tanning industry is one of the pillar industries of my country's light industry. Recognized as a large labor force for leather production. According to the statistics of China Leather Association, in 2009, the output of light leather (pig, cattle and sheep leather) of enterprises above designated size in the country was 690 million square meters, and in 2010 it reached 750 million square meters. The leather industry uses animal and material resources as raw materials. The production process involves large inputs, low output, and high resource consumption. According to statistics, only 200kg of finished leather can be prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30
Inventor 张宇曾雪
Owner SOUTHWEAT UNIV OF SCI & TECH
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