Peptide binding to arsenic-containing mineral and use thereof

Patent metadata

Field	Value
Publication number	US-11254707-B2
Application number	US-201716333502-A
Country	US
Kind code	B2
Filing date	Sep 15, 2017
Priority date	Sep 15, 2016
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

Providing a method for selecting minerals containing arsenic. A peptide comprising an amino acids sequence according to the following formula: (T, S, N, or Q)-(H, P, or W)-(E, or D)-(H, P, W, R, or K)-(L, I, V, F, or A)-(L, I, V, F, or A)-(L, I, V, F, or A)-(T, S, N, or Q)-(H, P, or W)-(L, I, V, F, or A)-(T, S, N, or Q)-(L, I, V, F, or A) wherein one amino acid is respectively selected from each group defined by paired parentheses.

First claim

The invention claimed is:

1. A peptide comprising a sequence which is at least 90% identical to SEQ ID NO: 1.

2. The peptide of claim 1 comprising a sequence which is 100% identical to SEQ ID NO: 1.

3. A peptide comprising a sequence derived from SEQ ID NO: 1 by deleting, replacing, and/or adding 1 amino acid.

4. A method of selecting and/or identifying a mineral containing arsenic, comprising contacting said mineral with the peptide of claim 2 .

5. A microorganism comprising on its surface the peptide of claim 1 .

6. A particle comprising on its surface the peptide of claim 1 .

7. A purification column comprising the peptide of claim 1 .

8. A collector for froth flotation comprising the peptide of claim 1 .

9. A depressant for froth flotation comprising the peptide of claim 1 .

10. A method of selecting and/or identifying a mineral containing arsenic, the method comprising:
adding a microorganism into mineral dispersion, wherein the microorganism comprises the peptide of claim 1 on its surface and wherein the mineral contains arsenic;
aggregating and precipitating the mineral; and recovering the aggregated and precipitated mineral.

11. A method of selecting and/or identifying a mineral containing arsenic, the method comprising:
affixing the peptide of claim 2 to a carrier; introducing the carrier into a column for chromatography; and passing mineral dispersion through the column, wherein the mineral contains arsenic.

Assignees

• Shibaura Inst Tech
• Jx Nippon Mining & Metals Corp

Inventors

• Yamashita Mitsuo
• Miura Akira

Classifications

• Y02P10/20

  Recycling · CPC title

• C22B30/04

  Obtaining arsenic {(extraction of metal compounds by leaching in organic solutions C22B3/16; treatment or purification of solutions by adsorption on solids C22B3/24, by liquid-liquid extraction C22B3/26, by ion-exchange extraction C22B3/42)} · CPC title

• C22B3/18

  with the aid of microorganisms or enzymes, e.g. bacteria or algae · CPC title

• B03D2203/02

  Ores · CPC title

• C22B1/00

  Preliminary treatment of ores or scrap · CPC title