Method for making and using an adsorbent
US-2018339919-A1 · Nov 29, 2018 · US
Method for adsorbing and removing benzene
US10532937B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10532937-B2 |
| Application number | US-201816047530-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 27, 2018 |
| Priority date | Sep 1, 2015 |
| Publication date | Jan 14, 2020 |
| Grant date | Jan 14, 2020 |
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Abstract
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Methods and nanocomposites for the adsorptive removal of aromatic hydrocarbons such as benzene, toluene, ethyl benzene and xylene from contaminated water sources and systems are provided. The nanocomposites contain carbon nanotubes and metal oxide nanoparticles such as Al 2 O 3 , Fe 2 O 3 and ZnO impregnated on a surface and/or in pore spaces of the carbon nanotubes. Methods of preparing and characterizing the nanocomposite adsorbents are also provided.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for adsorbing and removing benzene from an aqueous solution, comprising; deagglommerating multi walled carbon nanotubes having an average outer diameter of 10-20 nm and an average inner diameter of 1-10 nm in a mixture with ethanol; mixing the deagglomerated carbon nanotubes with an aluminum salt and heating to form a nanocomposite comprising the multi walled carbon nanotubes and aluminum oxide nanoparticle clusters; contacting the nanocomposite comprising the multi walled carbon nanotubes and the aluminum oxide nanoparticle clusters with the aqueous solution to adsorb the benzene from the aqueous solution, wherein the aluminum oxide nanoparticle clusters are impregnated on an outer surface and/or in pore spaces of the multi walled carbon nanotubes. 2. The method of claim 1 , wherein the multi walled carbon nanotubes are present in the nanocomposite in at least 85% by weight relative to the total weight of the nanocomposite and the aluminum oxide nanoparticle clusters are present in the nanocomposite in up to 15% by weight relative to the total weight of the nanocomposite. 3. The method of claim 1 , wherein the aluminum oxide nanoparticle clusters comprise aluminum oxide nanoparticles hay an average particle size of 1-50 nm. 4. The method of claim 1 , wherein the nanocomposite has a BET surface area of at least 100 m 2 /g. 5. The method of claim 1 , wherein at least 25% of the total mass of the benzene is removed from the aqueous solution. 6. The method of claim 1 , wherein up to 90% of the total mass of the benzene is removed from the aqueous solution.
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Classifications
- C02F1/288Primary
using composite sorbents, e.g. coated, impregnated, multi-layered · CPC title
Polymers · CPC title
Nanoparticles or nanotubes · CPC title
comprising aluminium oxide or hydroxide; comprising bauxite · CPC title
comprising oxides or hydroxides of metals not provided for in group B01J20/04 · CPC title
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- What does patent US10532937B2 cover?
- Methods and nanocomposites for the adsorptive removal of aromatic hydrocarbons such as benzene, toluene, ethyl benzene and xylene from contaminated water sources and systems are provided. The nanocomposites contain carbon nanotubes and metal oxide nanoparticles such as Al 2 O 3 , Fe 2 O 3 and ZnO impregnated on a surface and/or in pore spaces of the carbon nanotubes. Methods of preparing and c…
- Who is the assignee on this patent?
- Univ King Fahd Pet & Minerals, King Fahd of Petroleum and Minerals
- What technology area does this patent fall under?
- Primary CPC classification C02F1/288. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 14 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).