JPWO2020150457A5

JPWO2020150457A5 -

Info

Publication number: JPWO2020150457A5
Application number: JP2021539566A
Authority: JP
Publication date: 2023-01-26
Anticipated expiration: 2040-01-16

Claims

A method for removing metals from an aqueous fluid stream comprising the step of formula I:

I
[In the above formula, W is a phosphorus-based dendrimer core, X is a polyfunctional aromatic linker, Y may or may not be present, and if present, a polyfunctional aromatic a polyfunctional aminophosphoryl group attached to the linker, Z is a diaminoalkyl group, a polyalkylamino group, a polyethyleneimine with Mw ranging from 400 to about 1,000,000, or a polypropyleneimine; j and k is a numerical value corresponding to the multiplicity of branch points, and its value independently ranges from 1 to 10. l is a numerical value corresponding to the multiplicity of branch points, and its value ranges from 2 to 10. is in the range].

1. A method of adsorbing, separating, storing or sequestering metals from an aqueous fluid stream comprising the steps of: formula I:

I
[In the above formula, W is a phosphorus-based dendrimer core, X is a polyfunctional aromatic linker, Y may or may not be present, and if present, a polyfunctional aromatic a polyfunctional aminophosphoryl group attached to the linker, Z is a diaminoalkyl group, polyalkylamino group, polyethyleneimine, or polypropyleneimine, j and k are numerical values corresponding to the multiplicity of branching points; The value independently ranges from 1 to 10, l is a numerical value corresponding to the multiplicity of branching points, and the value ranges from 2 to 10]. A method comprising contacting with.

2. The method of claim 1, wherein the pH of said aqueous fluid stream is between about 2.0 and about 12.0.

3. The method of claim 2, wherein the pH of said aqueous fluid stream is between about 2.0 and about 12.0.

2. The method of claim 1, wherein said aqueous fluid stream is a municipal wastewater fluid stream.

2. The method of claim 1, wherein said aqueous fluid stream is an industrial wastewater fluid stream.

2. The method of claim 1, wherein the aqueous fluid stream is a potable water fluid stream.

2. The method of claim 1, wherein the aqueous fluid stream comprises leachate from municipal landfills, hydraulic fracturing, acid mine drainage, acid mine sludge, or coal-fired power plants.

A method according to any one of claims 1 to 8, wherein said metal is a heavy metal.

The heavy metal is arsenic (As), cadmium (Cd), lead (Pb), mercury (Hg), selenium (Se), copper (Cu), zinc (Zn), iron (Fe), aluminum (Al), manganese (Mn), nickel (Ni), or magnesium (Mg).

A method according to any one of claims 1 to 8, wherein said metal is a rare earth metal.

The rare earth metal is the following elements: cerium (Ce), dysprosium (Dy), erbium (Er), europium (Eu), gadolinium (Gd), holmium (Ho), lanthanum (La), lutetium (Lu), neodymium (Nd), praseodymium (Pr), promethium (Pm), samarium (Sm), scandium (Sc), terbium (Tb), thulium (Tm), ytterbium (Yb), and yttrium (Y), 12. The method of claim 11, wherein:

9. The method of any one of claims 1-8, further comprising regenerating said polyamine P-dendrimer of formula I by contacting said P-dendrimer with a concentrated acidic solution.

14. The method of claim 13, wherein the concentrated acidic solution is about 0.1 to about 5.0 M acetic acid, or about 0.1 to about 5.0 M HCl.

9. The method of any one of claims 1-8, further comprising regenerating the polyamine P-dendrimer of Formula I by contacting the P-dendrimer with a concentrated basic solution.

16. The method of claim 15, wherein the concentrated basic solution is about 0.05 to about 2.0 M NaOH, or about 0.05 to about 2.0 M ammonium citrate.

9. The method of any one of claims 1-8, further comprising contacting the polyamine P-dendrimer of Formula I with an iron salt to form an iron supported polyamine P-dendrimer solid adsorbent. .

18. The iron supported polyamine P-dendrimer solid adsorbent of claim 17 is used to adsorb, separate, store or sequester arsenic (As) or selenium (Se) from the aqueous fluid stream. the method of.

A process for capturing and removing metals from an aqueous metal-containing stream comprising:
(a) Formula I:

I
[In the above formula, W is a phosphorus-based dendrimer core, X is a polyfunctional aromatic linker, Y may or may not be present, and if present, a polyfunctional aromatic a polyfunctional aminophosphoryl group attached to the linker, Z is a diaminoalkyl group, a polyalkylamino group, a polyethyleneimine with Mw ranging from 400 to about 1,000,000, or a polypropyleneimine; j and k is a numerical value corresponding to the multiplicity of branch points, and its value independently ranges from 1 to 10. l is a numerical value corresponding to the multiplicity of branch points, and its value ranges from 2 to 10. providing a housing having dispersed therein an adsorbent comprising a polyamine phosphorus dendrimer (P-dendrimer) having a
(b) passing the metal-containing stream through the housing such that the metal-containing stream contacts the adsorbent;
(c) flushing the housing with a concentrated acidic stream to desorb metals retained therein from the adsorbent to form a solution of desorbed metals;
(d) flushing the housing to remove the desorbed metal from the housing;
process including.

20. The process of claim 19, wherein the aqueous metal-containing fluid stream has a pH between about 2.0 and about 12.0.

20. The process of claim 19, wherein said aqueous fluid stream is a municipal wastewater fluid stream.

20. The process of claim 19, wherein said aqueous fluid stream is an industrial wastewater fluid stream.

20. The process of claim 19, wherein said aqueous fluid stream is a potable water fluid stream.

20. The process of claim 19, wherein the aqueous fluid stream comprises leachate from municipal landfills, hydraulic fracturing, acid mine drainage, acid mine sludge, or coal-fired power plants.

A process according to any one of claims 19-24, wherein said metal is a heavy metal.

The heavy metals include arsenic (As), cadmium, lead (Pb), mercury (Hg), selenium (Se), copper (Cu), zinc (Zn), iron (Fe), aluminum (Al), and manganese (Mn). , nickel (Ni), or magnesium (Mg).

A process according to any one of claims 19-24, wherein said metal is a rare earth metal.

The rare earth metal is the following elements, cerium (Ce), dysprosium (Dy), erbium (Er), europium (Eu), gadolinium (Gd), holmium (Ho), lanthanum (La), lutetium (Lu), neodymium (Nd), praseodymium (Pr), promethium (Pm), samarium (Sm), scandium (Sc), terbium (Tb), thulium (Tm), ytterbium (Yb), and yttrium (Y), 28. The process of claim 27, wherein:

25. The process of any one of claims 19-24, further comprising regenerating the polyamine P-dendrimer of Formula I by contacting the P-dendrimer with a concentrated acidic solution.

30. The process of claim 29, wherein the concentrated acidic solution is about 0.1 to about 5.0 M acetic acid, or about 0.1 to about 5.0 M HCl.

25. The process of any one of claims 19-24, further comprising regenerating the polyamine P-dendrimer of Formula I by contacting the P-dendrimer with a concentrated basic solution.

32. The process of claim 31, wherein the concentrated basic solution is about 0.05 to about 2.0 M NaOH, or about 0.05 to about 2.0 M ammonium citrate.

25. The process of any one of claims 19-24, further comprising contacting the polyamine P-dendrimer of Formula I with an iron salt to form an iron supported polyamine P-dendrimer solid adsorbent. .

34. The method of claim 33, wherein the iron-supported polyamine P-dendrimer solid adsorbent is used to adsorb, separate, store, or sequester arsenic (As) or selenium (Se) from the aqueous fluid stream. process.

(a) iron II or iron III, and (b) formula I:

I
[In the above formula, W is a phosphorus-based dendrimer core, X is a polyfunctional aromatic linker, Y may or may not be present, and if present, a polyfunctional aromatic a polyfunctional aminophosphoryl group attached to the linker, Z is a diaminoalkyl group, a polyalkylamino group, a polyethyleneimine with Mw ranging from 400 to about 1,000,000, or a polypropyleneimine; j and k is a numerical value corresponding to the multiplicity of branch points, and its value independently ranges from 1 to 10. l is a numerical value corresponding to the multiplicity of branch points, and its value ranges from 2 to 10. an adsorbent comprising a polyamine phosphorus dendrimer (P-dendrimer) having a

36. The adsorbent of claim 35, wherein Z is polyethyleneimine.