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- Adsorption abstract "Adsorption is the adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved solid to a surface. This process creates a film of the adsorbate on the surface of the adsorbent. This process differs from absorption, in which a fluid (the absorbate) permeates or is dissolved by a liquid or solid (the absorbent). Adsorption is a surface-based process while absorption involves the whole volume of the material. The term sorption encompasses both processes, while desorption is the reverse of it. Adsorption is a surface phenomenon.Similar to surface tension, adsorption is a consequence of surface energy. In a bulk material, all the bonding requirements (be they ionic, covalent, or metallic) of the constituent atoms of the material are filled by other atoms in the material. However, atoms on the surface of the adsorbent are not wholly surrounded by other adsorbent atoms and therefore can attract adsorbates. The exact nature of the bonding depends on the details of the species involved, but the adsorption process is generally classified as physisorption (characteristic of weak van der Waals forces) or chemisorption (characteristic of covalent bonding). It may also occur due to electrostatic attraction.Adsorption is present in many natural, physical, biological, and chemical systems, and is widely used in industrial applications such as activated charcoal, capturing and using waste heat to provide cold water for air conditioning and other process requirements (adsorption chillers), synthetic resins, increase storage capacity of carbide-derived carbons, and water purification. Adsorption, ion exchange, and chromatography are sorption processes in which certain adsorbates are selectively transferred from the fluid phase to the surface of insoluble, rigid particles suspended in a vessel or packed in a column. Pharmaceutical industry applications, which use adsorption as a means to prolong neurological exposure to specific drugs or parts thereof, are lesser known.However, it should be remarked that the distinction between adsorption and absorption vanishes as we go from perfectly crystalline macroscopic materials to porous/structured materials, aggregates and composites made out of increasingly smaller grains, viz., micron-sized particles to nanoparticles, sub-nano particles and finally molecules (or atoms). In such nano-composites, the internal surface area of particulate matter is very large. Then the adsorption on internal surfaces simply becomes absorption when viewed from the bulk. Then the distinction between adsorption and absorption vanishes. On the other hand, the distinction is clearest between bulk solids without internal structure, but having only surfaces where only adsorption can occur on the outer surfaces, and nanocomposites or aggregates with internal structure where absorption by the host material is simply adsorption on internal surfaces of the host material. As an example, we may consider a crystalline piece of silicon dioxide (quartz) which can adsorb water molecules on its surface. However, if the quartz is ground into very fine sand, the pile of sand (an aggregate) has a very large internal surface area. A very large amount of water can be adsorbed by the \"internal\" surfaces of the grains in the pile of sand, and this absorption is simply \"internal adsorption. If water is made to flow thorugh such a pile of sand, ions and toxins in the water may be preferentially adsorbed by the surfaces of the grains of sand, providing a simple, well-known water purification application.The word \"adsorption\" was coined in 1881 by German physicist Heinrich Kayser (1853-1940).".
- Adsorption thumbnail BET_Multilayer_Adsorption.svg?width=300.
- Adsorption wikiPageExternalLink derive.html.
- Adsorption wikiPageExternalLink solvent-recovery-carbon-adsorption-p-685-l-en.html.
- Adsorption wikiPageID "207601".
- Adsorption wikiPageLength "36643".
- Adsorption wikiPageOutDegree "105".
- Adsorption wikiPageRevisionID "708312618".
- Adsorption wikiPageWikiLink Abrasion_(mechanical).
- Adsorption wikiPageWikiLink Absorption_(chemistry).
- Adsorption wikiPageWikiLink Absorption_refrigerator.
- Adsorption wikiPageWikiLink Activated_carbon.
- Adsorption wikiPageWikiLink Adhesion.
- Adsorption wikiPageWikiLink Albumin.
- Adsorption wikiPageWikiLink Atom.
- Adsorption wikiPageWikiLink BET_theory.
- Adsorption wikiPageWikiLink Biomaterial.
- Adsorption wikiPageWikiLink Bulk_cargo.
- Adsorption wikiPageWikiLink Carbide-derived_carbon.
- Adsorption wikiPageWikiLink Category:Catalysis.
- Adsorption wikiPageWikiLink Category:Chemical_processes.
- Adsorption wikiPageWikiLink Category:Colloidal_chemistry.
- Adsorption wikiPageWikiLink Category:Gas_technologies.
- Adsorption wikiPageWikiLink Category:Gases.
- Adsorption wikiPageWikiLink Category:Materials_science.
- Adsorption wikiPageWikiLink Category:Surface_science.
- Adsorption wikiPageWikiLink Cell_(biology).
- Adsorption wikiPageWikiLink Cell_membrane.
- Adsorption wikiPageWikiLink Chemisorption.
- Adsorption wikiPageWikiLink Chiller.
- Adsorption wikiPageWikiLink Chromatography.
- Adsorption wikiPageWikiLink Contour_line.
- Adsorption wikiPageWikiLink Covalent_bond.
- Adsorption wikiPageWikiLink Cryo-adsorption.
- Adsorption wikiPageWikiLink Crystal_structure.
- Adsorption wikiPageWikiLink Desorption.
- Adsorption wikiPageWikiLink Dissolution_(chemistry).
- Adsorption wikiPageWikiLink Dual-polarization_interferometry.
- Adsorption wikiPageWikiLink Edward_Teller.
- Adsorption wikiPageWikiLink File:Adsorption_Isotherms_(Langmuir_red_&_BET_green.JPG.
- Adsorption wikiPageWikiLink File:Demac_isoth.jpg.
- Adsorption wikiPageWikiLink Fluid.
- Adsorption wikiPageWikiLink Fluidized_bed_concentrator.
- Adsorption wikiPageWikiLink Freundlich_equation.
- Adsorption wikiPageWikiLink Graphite.
- Adsorption wikiPageWikiLink Heinrich_Kayser.
- Adsorption wikiPageWikiLink Henry_adsorption_constant.
- Adsorption wikiPageWikiLink Heterogeneous_catalysis.
- Adsorption wikiPageWikiLink Hydrodynamic_radius.
- Adsorption wikiPageWikiLink Hydrogen_spillover.
- Adsorption wikiPageWikiLink Ideal_gas_law.
- Adsorption wikiPageWikiLink International_Union_of_Pure_and_Applied_Chemistry.
- Adsorption wikiPageWikiLink Ion.
- Adsorption wikiPageWikiLink Ion_exchange.
- Adsorption wikiPageWikiLink Ionic_bonding.
- Adsorption wikiPageWikiLink Irving_Langmuir.
- Adsorption wikiPageWikiLink Kelvin_probe_force_microscope.
- Adsorption wikiPageWikiLink Langmuir_adsorption_model.
- Adsorption wikiPageWikiLink Metallic_bonding.
- Adsorption wikiPageWikiLink Micromeritics.
- Adsorption wikiPageWikiLink Microporous_material.
- Adsorption wikiPageWikiLink Molecular_sieve.
- Adsorption wikiPageWikiLink Molecule.
- Adsorption wikiPageWikiLink Nanoparticle.
- Adsorption wikiPageWikiLink Paul_Hugh_Emmett.
- Adsorption wikiPageWikiLink Permeation.
- Adsorption wikiPageWikiLink Physisorption.
- Adsorption wikiPageWikiLink Polyelectrolyte_adsorption.
- Adsorption wikiPageWikiLink Potential_theory_of_Polanyi.
- Adsorption wikiPageWikiLink Pressure_swing_adsorption.
- Adsorption wikiPageWikiLink Protein_adsorption.
- Adsorption wikiPageWikiLink Reactions_on_surfaces.
- Adsorption wikiPageWikiLink Receptor_(biochemistry).
- Adsorption wikiPageWikiLink Silica_gel.
- Adsorption wikiPageWikiLink Sorption.
- Adsorption wikiPageWikiLink Standard_conditions_for_temperature_and_pressure.
- Adsorption wikiPageWikiLink Stephen_Brunauer.
- Adsorption wikiPageWikiLink Surface_energy.
- Adsorption wikiPageWikiLink Surface_phenomenon.
- Adsorption wikiPageWikiLink Surface_science.
- Adsorption wikiPageWikiLink Surface_tension.
- Adsorption wikiPageWikiLink Synthetic_resin.
- Adsorption wikiPageWikiLink Tetris.
- Adsorption wikiPageWikiLink Thermal_stability.
- Adsorption wikiPageWikiLink Thermodynamics.
- Adsorption wikiPageWikiLink Van_der_Waals_force.
- Adsorption wikiPageWikiLink Van_t_Hoff_equation.
- Adsorption wikiPageWikiLink Vapor_pressure.
- Adsorption wikiPageWikiLink Viral_entry.
- Adsorption wikiPageWikiLink Viral_life_cycle.
- Adsorption wikiPageWikiLink Vroman_effect.
- Adsorption wikiPageWikiLink Water_purification.
- Adsorption wikiPageWikiLink Wetting.
- Adsorption wikiPageWikiLink Zeolite.
- Adsorption wikiPageWikiLink Ångström.
- Adsorption wikiPageWikiLink File:Activated_Carbon.jpg.
- Adsorption wikiPageWikiLink File:BET_Multilayer_Adsorption.svg.
- Adsorption wikiPageWikiLink File:THC_2003.902.070_Silica_Gel_Adsorber_for_NO2.tif.
- Adsorption wikiPageWikiLink File:Wiki_kisliuk_n2-tungsten.JPG.
- Adsorption wikiPageWikiLinkText "''ad''sorb".