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US 2017/0088439 A1Published application
Removal of Arsenic from Liquids
OwnerNarayan V. Thakurinventor
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Abstract
This disclosure provides methods for separation of arsenic, in the form of arsenate and arsenite, from liquids. The method uses CuO as an adsorbent and brings down the arsenic content of liquids, such as water, to less than 10 ppb. This process is cost-effective and applicable for small, medium, and large scale.
Claims20
A flow-through process for separating arsenite and/or arsenate from a liquid, comprising:
- i) passing the liquid through a composition comprising CuO;
- and
- ii) providing a liquid comprising a level of arsenite and/or arsenate of at most 10% of the level of arsenite and/or arsenate in the liquid before step i).
A system comprising:
- i) a container for a liquid containing arsenic;
- ii) a column comprising CuO connected to the container;
- iii) a first valve to control flow of liquid from the container to the column;
- and
- iv) a second valve to control flow of arsenic-free liquid from the column to another container.
2 more elements
Dependencies are inferred from the claim text.