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Related Concept Videos

Ionic Radii03:10

Ionic Radii

33.6K
Ionic radius is the measure used to describe the size of an ion. A cation always has fewer electrons and the same number of protons as the parent atom; it is smaller than the atom from which it is derived. For example, the covalent radius of an aluminum atom (1s22s22p63s23p1) is 118 pm, whereas the ionic radius of an Al3+ (1s22s22p6) is 68 pm. As electrons are removed from the outer valence shell, the remaining core electrons occupying smaller shells experience a greater effective nuclear...
33.6K
Ionic Bonds00:42

Ionic Bonds

131.7K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
131.7K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

20.2K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.2K
High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

1.6K
In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...
1.6K
Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

68.3K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
68.3K
Ionic Crystal Structures02:42

Ionic Crystal Structures

17.5K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
17.5K

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Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
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Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids

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Ionic Liquids in Bioseparation Processes.

Diana C V Belchior1, Iola F Duarte1, Mara G Freire2

  • 1CICECO-Aveiro Institute of Materials, Chemistry Department, University of Aveiro, Aveiro, Portugal.

Advances in Biochemical Engineering/Biotechnology
|May 11, 2018
PubMed
Summary
This summary is machine-generated.

Ionic liquids (ILs) offer efficient and biocompatible methods for bioseparation, purifying valuable compounds like amino acids and proteins. These IL-based techniques, including liquid-liquid and solid-liquid extractions, represent significant advances in biotechnology.

Keywords:
Amino acidsIonic liquidLiquid–liquid extractionProteinsSolid–liquid extraction

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Area of Science:

  • Biotechnology
  • Bioseparation science
  • Green chemistry

Background:

  • Bioseparation is crucial for purifying biologically active compounds.
  • Ionic liquids (ILs) offer unique properties like non-volatility and designability for bioseparation.
  • ILs can be used in liquid-liquid extractions (non-water miscible ILs, aqueous biphasic systems) and solid-liquid extractions (supported IL phases).

Purpose of the Study:

  • To summarize and discuss bioseparation processes utilizing ionic liquids.
  • To highlight recent advances in IL-based bioseparation for amino acids and proteins.
  • To discuss the improvements and future directions of IL applications in bioseparation.

Main Methods:

  • Review of liquid-liquid extraction techniques using ionic liquids.
  • Analysis of solid-liquid extraction methods employing supported ionic liquid phases (SILPs).
  • Focus on the application of these methods for amino acid and protein separation and purification.

Main Results:

  • Ionic liquids provide efficient and biocompatible solutions for bioseparation.
  • IL-based methods demonstrate significant improvements in the purification of amino acids and proteins.
  • Recent advances showcase the versatility and effectiveness of ILs in various bioseparation strategies.

Conclusions:

  • Ionic liquids are highly promising for developing advanced bioseparation processes.
  • The unique properties of ILs enhance efficiency and biocompatibility in purifying valuable biomolecules.
  • Further research into IL-based bioseparation will drive innovation in biotechnology.