Adsorbing material based on cross-linked protein, and applications of adsorbing material in recovery of precious metals

An adsorption material and protein technology, which is applied in the field of selectively extracting gold and other precious metals, can solve the problems of immature technology of precious metals, inability to be applied on a large scale, and difficulty in solid-liquid separation, and achieve good promotion and application prospects, simple operation, and adsorption good effect

Active Publication Date: 2020-04-10
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology uses an absorbable substance that absorbs specific types of impurities (metallic elements) found naturally within certain materials like mineral deposits such as copper sulfide). It makes it easier and more efficient than existing methods because they are less expensive but still effective at removing these harmful compounds effectively without causing environmental pollution.

Problems solved by technology

This patents discusses various techniques for separating or extracting valuable elements like platinum, silver, copper, iron, zinc, lead, selenium, tellurium, ruthenium, rhodium, tantaluminum, ceramics, silicon dioxide, calcium hydroxyapatite, magnesium oxysulfate, manganese sulfates, chromites, lithochlorides, polytetrafluoroethylene, polyimine films, polymers with porous surfaces, which makes these processes expensive and environmentally harmful due to their slowed up absorbency rates. Additionally, there may also exist other types of molecules called biological agents that could help dissolve certain compounds without being affected by traditional chemical treatments.

Method used

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  • Adsorbing material based on cross-linked protein, and applications of adsorbing material in recovery of precious metals
  • Adsorbing material based on cross-linked protein, and applications of adsorbing material in recovery of precious metals
  • Adsorbing material based on cross-linked protein, and applications of adsorbing material in recovery of precious metals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] After adjusting the 4-hydroxyethylpiperazineethanesulfonic acid buffer solution of 50mmol / L tris(2-carboxyethyl)phosphine hydrochloride to the pH value of 7.0 with NaOH, and 30mg / mL lysozyme 4-hydroxyethyl Equal volumes of piperazine-ethanesulfonic acid buffer solution were mixed, and after incubation at room temperature for 4 hours, the obtained phase-transition lysozyme microparticles were centrifuged and washed, and then cross-linked in 1% glutaraldehyde aqueous solution for 1 hour at room temperature, and finally cross-linked The final microparticles are washed and freeze-dried to obtain a cross-linked lysozyme adsorption material.

Embodiment 2

[0022] The 4-hydroxyethylpiperazineethanesulfonic acid buffer solution of 50mmol / L tris(2-carboxyethyl)phosphine hydrochloride was adjusted to a pH value of 7.0 with NaOH, and then it was mixed with 30mg / mL lysozyme 4- Equal volumes of hydroxyethylpiperazineethanesulfonic acid buffer solution were mixed, and the resulting mixture was directly spread over the surface of the glass slide, incubated at room temperature for 3 hours, and a film was deposited on the glass slide, which was cleaned with water. Then soak the glass flakes of deposited film in 1% glutaraldehyde aqueous solution, cross-link at room temperature for 1 hour, then rinse with water, then soak the glass flakes in 1 mol / L sodium hydroxide aqueous solution for 1 hour, Finally, the film was peeled off from the glass slide to obtain the cross-linked lysozyme adsorption material. Depend on figure 1 It can be seen that the adsorption material has a thickness of 23 μm and consists of upper and lower layers, the lower ...

Embodiment 3

[0024] The 4-hydroxyethylpiperazineethanesulfonic acid buffer solution of 50mmol / L tris(2-carboxyethyl)phosphine hydrochloride was adjusted to a pH value of 5.0 with NaOH, and then it was mixed with 40mg / mL bovine serum albumin 4-Hydroxyethylpiperazineethanesulfonic acid buffer solution is mixed in equal volumes, and the resulting mixture is directly spread on the surface of the glass slide, incubated at room temperature for 12 hours, a film will be deposited on the glass slide, and cleaned with water. Then soak the glass sheet of deposited film in a glutaraldehyde aqueous solution with a mass fraction of 2%, clean it with clear water after cross-linking at room temperature for 2 hours, and then soak the glass sheet in 1mol / L sodium hydroxide aqueous solution for 1 hour, Finally, the membrane was peeled off from the glass slide to obtain the cross-linked bovine serum albumin adsorption material.

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Abstract

The invention discloses an adsorbing material based on cross-linked protein, and applications of the adsorbing material in recovery of precious metals. The adsorbing material is microparticles formedby cross-linking a cross-linking agent and phase transformation protein or a double-layer protein film with a compact nano-film on the lower layer and a microparticle dense accumulation layer on the upper layer, wherein the protein is lysozyme and bovine serum albumin. According to the invention, the preparation method of the adsorbing material is simple, and has the characteristics of low cost, low energy consumption, environmental protection and the like; and with the application of the absorbing material in treatment of ore leaching liquids containing noble metals and leaching liquids of noble metals in electronic waste, the good adsorption effect on noble metals is achieved, the absorbing material can be repeatedly used, the operation is simple and convenient, the cost is low, and theabsorbing material is easy to popularize and apply.

Description

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Claims

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Application Information

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Owner SHAANXI NORMAL UNIV
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