Iodine adsorbent, water treating tank and iodine adsorbing system
US-2015266752-A1 · Sep 24, 2015 · US
Cation adsorbent and treatment method for solution using the same
US2016289794A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016289794-A1 |
| Application number | US-201615177455-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 9, 2016 |
| Priority date | Aug 23, 2011 |
| Publication date | Oct 6, 2016 |
| Grant date | — |
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Abstract
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A cation adsorbent of an embodiment includes tungsten oxide particles having a BET specific surface area in a range of 0.82 m 2 /g or more and 820 m 2 /g or less. The cation adsorbent is added to a solution to be treated containing cations being recovery objects, and the cation adsorbent adsorbing the cations is precipitated. The generated precipitate is separated from the solution to recover the cations.
First claim
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1 . A treatment method of a solution, comprising: adding a cation adsorbent comprising tungsten oxide particles having a BET specific surface area in a range of 0.82 m 2 /g or more and 820 m 2 /g or less to a solution to be treated containing cations being recovery objects to let the cation adsorbent adsorb the cations; precipitating the cation adsorbent adsorbing the cations to obtain precipitate; and separating the precipitate from the solution to recover the cations. 2 . The treatment method of the solution according to claim 1 , further comprising: preparing a dispersion liquid by dispersing the cation adsorbent in an aqueous dispersion medium, wherein the dispersion liquid containing the cation adsorbent is added to the solution. 3 . The treatment method of the solution according to claim 1 , wherein the solution in which the cation adsorbent is added or the precipitate is treated by using an organic coagulant. 4 . The treatment method of the solution according to claim 1 , wherein the cation is at least one ion selected from the group consisting of a cesium (Cs) ion, a strontium (Sr) ion, an iodine (I) ion, and a lithium (Li) ion. 5 . The treatment method of the solution according to claim 1 , wherein the cation is a cesium (Cs) ion and the solution contains a sodium (Na) ion together with the cesium (Cs) ion, and wherein an adsorption ratio of the cesium (Cs) ion by the cation absorbent is higher than an adsorption ratio of the sodium (Na) ion by the cation absorbent. 6 . The treatment method of the solution according to claim 1 , wherein the cation is a strontium(Sr) ion and the solution contains a sodium (Na) ion together with the strontium (Sr) ion, and wherein an adsorption ratio of the strontium (Sr) ion by the cation absorbent is higher than an adsorption ratio of the sodium (Na) ion by the cation adsorbent. 7 . The treatment method of the solution according to claim 1 , wherein the cation is at least one ion selected from the group consisting of a cesium (Cs) ion and a strontium ion (Sr), and the solution contains at least one ion selected from the group consisting of a magnesium (Mg) ion, a calcium (Ca) ion, and a potassium (K) ion together with at least one ion selected from the group consisting of the cesium (Cs) ion and the strontium ion (Sr), and wherein an adsorption ratio of at least one ion selected from the group consisting of the cesium (Cs) ion and the strontium ion (Sr) by the cation absorbent is higher than an adsorption ratio of at least one ion selected from the group consisting of the magnesium (Mg) ion, the calcium (Ca) ion, and the potassium (K) ion by the cation adsorbent. 8 . The treatment method of the solution according to claim 1 , wherein the solution is seawater containing a cesium (Cs) ion, and an adsorption ration of the cesium (Cs) ion by the cation adsorbent is 90% or more.
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Classifications
by absorption; by adsorption; by ion-exchange · CPC title
using specific organic precipitants · CPC title
involving ionic interaction, e.g. ion-exchange, ion-pair, ion-suppression or ion-exclusion · CPC title
being less than 100 m2/g · CPC title
- C01G41/02Primary
Oxides; Hydroxides · CPC title
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- What does patent US2016289794A1 cover?
- A cation adsorbent of an embodiment includes tungsten oxide particles having a BET specific surface area in a range of 0.82 m 2 /g or more and 820 m 2 /g or less. The cation adsorbent is added to a solution to be treated containing cations being recovery objects, and the cation adsorbent adsorbing the cations is precipitated. The generated precipitate is separated from the solution to recover t…
- Who is the assignee on this patent?
- Toshiba Kk, Toshiba Materials Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C01G41/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Oct 06 2016 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).