Preparation method of collagen-based porous oil-absorbing material

A technology of oil-absorbing materials and collagen, applied in chemical instruments and methods, alkali metal oxides/hydroxides, inorganic chemistry, etc., can solve the problem of low oil-absorbing capacity of collagen-based oil-absorbing materials, and achieve easy recycling and reuse, hydrophobic Effect of increased lipophilicity, increased active binding sites

Inactive Publication Date: 2015-10-14
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To sum up, the current research on collagen fibers as oil-absorbing materials is still very limited, and the oil-absorbing capacity of related prepared collagen-based oil-absorbing materials is not high, so further research is necessary

Method used

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  • Preparation method of collagen-based porous oil-absorbing material
  • Preparation method of collagen-based porous oil-absorbing material
  • Preparation method of collagen-based porous oil-absorbing material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of skin powder fiber

[0040] Deliming the waste after liming cowhide skins before tanning, cutting into small pieces, soaking in water to remove impurities, overnight; then soaking in acetic acid-sodium acetate with a pH value of 4.5~5.0 that is 10~20 times the weight of the hides Demineralize in buffer solution overnight; after washing with water, soak in 90% to 95% acetone solution 5 to 10 times the weight of the skin to degrease, change the liquid every 12 to 24 hours, repeat 3 to 5 times; Dry, then soak in 5-10 times of absolute ethanol for dehydration, change the liquid every 12-24 hours, repeat 3-5 times; finally take out the skins and dry them naturally, crush them, and sieve them to get 50-200 mesh skins powder fiber.

[0041] Preparation of Modified Skin Powder Fiber

[0042] The obtained 20 g skin powder fiber and 400 ~ 600 mL of pH is 8 ~ 10 sodium carbonate-sodium bicarbonate buffer solution mixed in a three-necked flask, stirred at room tempe...

Embodiment 2

[0046] Preparation of skin powder fiber

[0047] Deliming the waste after liming sheepskin slices before tanning, cutting into small pieces, soaking in water to remove impurities, overnight; then soaking in acetic acid-sodium acetate with a pH value of 4.5~5.0 that is 10~20 times the weight of the leather pieces Demineralize in buffer solution overnight; after washing with water, soak in 90% to 95% acetone solution 5 to 10 times the weight of the skin to degrease, change the liquid every 12 to 24 hours, repeat 3 to 5 times; Dry, then soak in 5-10 times of absolute ethanol for dehydration, change the liquid every 12-24 hours, repeat 3-5 times; finally take out the skins and dry them naturally, crush them, and sieve them to get 50-200 mesh skins powder fiber.

[0048] Preparation of Modified Skin Powder Fiber

[0049] The obtained 20 g skin powder fiber and 400 ~ 600 mL of pH is 8 ~ 10 sodium carbonate-sodium bicarbonate buffer solution mixed in a three-necked flask, stirred a...

Embodiment 3

[0053] Preparation of skin powder fiber

[0054] Deliming the waste after liming cowhide skins before tanning, cutting into small pieces, soaking in water to remove impurities, overnight; then soaking in acetic acid-sodium acetate with a pH value of 4.5~5.0 that is 10~20 times the weight of the hides Demineralize in buffer solution overnight; after washing with water, soak in 90% to 95% acetone solution 5 to 10 times the weight of the skin to degrease, change the liquid every 12 to 24 hours, repeat 3 to 5 times; Dry, then soak in 5-10 times of absolute ethanol for dehydration, change the liquid every 12-24 hours, repeat 3-5 times; finally take out the skins and dry them naturally, crush them, and sieve them to get 50-200 mesh skins powder fiber.

[0055] Preparation of Modified Skin Powder Fiber

[0056] The obtained 20 g skin powder fiber and 400 ~ 600 mL of pH is 8 ~ 10 sodium carbonate-sodium bicarbonate buffer solution mixed in a three-necked flask, stirred at room tempe...

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Abstract

The invention relates to a preparation method of a collagen-based porous oil-absorbing material, and relates to the technical field of biomass resource recycling and environment-friendly oil-absorbing materials. A collagen-based porous oil-absorbing material preparation method provided by the invention comprises the steps that: (1) lime-expanded pelt scraps before tanning are cut into small pieces; pretreatments such as deliming, degreasing and dehydration are carried out, such that hide powder fiber is obtained; (2) the prepared hide powder fiber is dispersed in a buffering solution containing an epoxysilane coupling agent or polydimethylsiloxane for modification, such that hydrophobic lipophilic hide powder fiber is obtained; and (3) the modified hide powder fiber obtained in the step (2) is dispersed in water; and forming and drying ae carried out, such that the collagen-based porous oil-absorbing material is obtained. The method provided by the invention has the advantages of simple operation and low cost. The prepared oil-absorbing material has hydrophobic lipophilic properties and a porous structure. The material also has biodegradability and relatively high oil-absorbing capacity. Therefore, a novel application approach is developed for the high-value conversion and utilization of hide collagen fiber solid wastes.

Description

technical field [0001] The invention belongs to the technical field of biomass resource reuse and environment-friendly oil-absorbing materials, and specifically relates to a preparation method of a collagen-based porous oil-absorbing material modified by epoxy-based organosilicon cross-linking. Background technique [0002] With the rapid development of industrialization and urbanization, marine oil spill incidents occur frequently, and corporate wastewater and domestic wastewater are discharged in excess, which poses a serious threat to the ecological environment and human health. Methods for treating oil slicks and oily wastewater include: in-situ combustion method, mechanical skimming method, chemical dispersion method, biodegradation method and adsorption method, etc. Among them, the adsorption method using adsorption materials is a more economical and effective method. Treatment methods (Wahi R, Chuah L A, Choong T S Y, et al. Oil removal from aqueous state by natural f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C09K3/32
Inventor 李正军杜卫宁
Owner SICHUAN UNIV
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