Counterflow adsorption filter column for water treatment
US-11198624-B2 · Dec 14, 2021 · US
Novel adsorbent
US2023071223A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2023071223-A1 |
| Application number | US-202117793807-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 20, 2021 |
| Priority date | Jan 20, 2020 |
| Publication date | Mar 9, 2023 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present invention is to provide a novel adsorbent which is low in cost, has versatility and high adsorption ability. Specifically, the present invention is to provide an adsorbent of a specific metal element containing a metal salt of a cyanometallic acid, a method for producing the same, and a method for removing the ion of the element that is the target of adsorption using such an adsorbent.
First claim
Opening claim text (preview).
1 . An adsorbent for a metal element other than cesium or strontium, the adsorbent comprising a metal salt of a cyanometallic acid. 2 . The adsorbent according to claim 1 , wherein the metal element is at least one selected from the group consisting of manganese, iron, cobalt, nickel, zinc, ruthenium, rhodium, barium, lanthanum and cerium. 3 . The adsorbent according to claim 1 , wherein the metal salt of a cyanometallic acid is obtained by a reaction of a salt of a cyanometallic acid and a compound comprising a metal element. 4 . The adsorbent according to claim 3 , wherein the reaction is carried out using a porous substance carrying either one of the compound comprising a metal element or the salt of a cyanometallic acid and an aqueous solution of the other, and wherein the metal salt of a cyanometallic acid is formed and fixed inside and outside the porous substance. 5 . The adsorbent according to claim 4 , wherein the porous substance is a hydrophilic fiber. 6 . The adsorbent according to claim 1 , wherein the metal salt of a cyanometallic acid is a first-row transition metal salt of a hexacyanometallic acid. 7 . The adsorbent according to claim 6 , wherein the first-row transition metal is at least one selected from the group consisting of iron, cobalt, copper and zinc. 8 . A method for removing a metal element other than cesium or strontium from water, comprising a step of bringing the adsorbent according to claim 1 into contact with an aqueous sample comprising the metal element. 9 . The method according to claim 8 , wherein the metal element is at least one selected from the group consisting of manganese, iron, cobalt, nickel, zinc, ruthenium, rhodium, barium, lanthanum and cerium. 10 . The method according to claim 8 , further comprising a step of removing the adsorbent.
Assignees
Inventors
Classifications
Complex cyanides · CPC title
Simple or complex iron cyanides · CPC title
Simple alkali metal cyanides · CPC title
Regeneration of sorbents, filters · CPC title
Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2023071223A1 cover?
- The present invention is to provide a novel adsorbent which is low in cost, has versatility and high adsorption ability. Specifically, the present invention is to provide an adsorbent of a specific metal element containing a metal salt of a cyanometallic acid, a method for producing the same, and a method for removing the ion of the element that is the target of adsorption using such an adsorbent.
- Who is the assignee on this patent?
- Univ Tokyo
- What technology area does this patent fall under?
- Primary CPC classification C02F1/281. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Mar 09 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).