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Related Concept Videos

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

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Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
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Detergents are used to purify the integral proteins of the membrane. The hydrophobic portion of the detergent can replace membrane phospholipids while solubilizing the membrane proteins. When detergent monomers reach a specific concentration in a solution called critical micelle concentration (CMC), they form micelles. Above CMC, the concentration of the detergent monomers remains in equilibrium with the micelle. The number of detergent monomers present in the CMC varies for each detergent, and...
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Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
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Membrane-based adsorbent materials for uranium extraction from seawater: recent progress and future prospects.

Zhong Liu1,2, Huanhuan Tan3, Yuling Shao4

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Extracting uranium from seawater using membrane-based adsorbents offers a sustainable solution to the global energy shortage. These materials are effective despite seawater

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Area of Science:

  • Materials Science
  • Environmental Science
  • Chemical Engineering

Background:

  • Global energy demands necessitate sustainable fuel sources.
  • Uranium is a critical nuclear fuel, with vast oceanic reserves.
  • Seawater uranium extraction presents challenges due to competing ions and salinity.

Purpose of the Study:

  • To review membrane-based adsorbents for uranium extraction from seawater.
  • To assess the economics and sustainability of these materials.
  • To highlight recent advancements and future prospects.

Main Methods:

  • Review of modified non-woven membranes.
  • Analysis of phase conversion membranes.
  • Discussion of other membrane material types.

Main Results:

  • Membrane-based adsorbents show promise for large-scale uranium recovery.
  • Ease of collection and reusability are key advantages.
  • Ongoing research addresses challenges in complex marine environments.

Conclusions:

  • Membrane adsorbents are ideal for sustainable oceanic uranium extraction.
  • Further development is needed to overcome environmental challenges.
  • This field holds significant potential for future energy security.