Concept

Sorption

Sorption is a physical and chemical process by which one substance becomes attached to another. Specific cases of sorption are treated in the following articles: Absorption "the incorporation of a substance in one state into another of a different state" (e.g., liquids being absorbed by a solid or gases being absorbed by a liquid); Adsorption The physical adherence or bonding of ions and molecules onto the surface of another phase (e.g., reagents adsorbed to a solid catalyst surface); Ion exchange An exchange of ions between two electrolytes or between an electrolyte solution and a complex. The reverse of sorption is desorption. The adsorption and absorption rate of a diluted solute in gas or liquid solution to a surface or interface can be calculated using Fick's laws of diffusion.

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https://en.wikipedia.org/wiki/Sorption

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Related concepts (2)

Ion

An ion (ˈaɪ.ɒn,_-ən) is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a proton, which is considered to be positive by convention. The net charge of an ion is not zero because its total number of electrons is unequal to its total number of protons. A cation is a positively charged ion with fewer electrons than protons while an anion is a negatively charged ion with more electrons than protons.

Adsorption

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) is dissolved by or permeates a liquid or solid (the absorbent). Adsorption is a surface phenomenon and the adsorbate does not penetrate through the surface and into the bulk of the adsorbent, while absorption involves transfer of the absorbate into the volume of the material, although adsorption does often precede absorption.

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Official source

https://en.wikipedia.org/wiki/Sorption

About this result

Related courses (3)

ChE-310: Fundamentals of separation processes

ENV-200: Environmental chemistry

ENV-504: Groundwater and soil remediation

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Electrically driven first-order phase transition of a 2D ionic crystal at the electrode/electrolyte interface

Liquid electrolytes adsorbed at the surface of metallic electrodes display a multitude of structures that can largely differ from the parent bulk system, both in terms of composition and local organization. In particular, the existence of disorder–order or order–order transitions has been increasingly reported in experimental and simulation studies, and the electrode potential identified as the corresponding driving force. The microscopic mechanisms and the stages of the process are, however, poorly underst

Proceedings of the National Academy of Sciences2025

Adsorption of progesterone onto microplastics and its desorption in fish following digestion with simulated gastric and intestinal fluids

Florian Frédéric Vincent Breider, Dominique Grandjean

The sorption of hydrophobic organic compounds onto microplastics is relatively well reported in the literature, while their desorption remains poorly investigated, especially in biological fluids. The present study investigated the sorption and desorption of progesterone on polyethylene (PE), polypropylene (PP), and polystyrene (PS) microplastics. A sorption efficiency of 357.1 mg g-1 was found for PE and PS, and 322.6mg g-1 for PP. Sorption experiments indicated that adsorption would certainly happen via s

2022

The adsorption and desorption behaviors of phenanthrene and pyrene onto microplastics in the aquatic environment and digestive fluids

Florian Frédéric Vincent Breider

The adsorption and desorption behaviors of Phenanthrene and Pyrene onto polyethylene (PE), polypropylene (PP), polystyrene (PS), and poly (methyl methacrylate) (PMMA) microplastics in the simulated freshwater and digestive fluids (simulated gastic fluid (SGF), simulated intestinal fluid (SIF)) were studied. The second-order kinetic model described the sorption kinetics of polycyclic aromatic hydrocarbons (PAHs), and the Langmuir model fitted the sorption isotherms of PAHs better, which indicated the surface

2020

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Janet Gordon Hering

Expertise Biogeochemical cycling of trace metals and metalloids Mineral weathering and reactions at mineral surfaces Water treatment processes for removal of inorganic contaminants Education Massachusetts Institute of Technology/ Woods Hole Oceanographic Institution Joint Program, Cambridge, MA, Ph.D. in Oceanography, May1988. Harvard University, Cambridge, MA, A.M. in Chemistry, January 1981. Cornell University, Ithaca, NY, A.B. in Chemistry, June 1979.Professional Experience Swiss Federal Institute of A

Thibault Béranger Masset

Cécilia Laetitia Carla Siri

Florian Frédéric Vincent Breider

Florian Breider obtained his PhD in the field of the stable isotope biogeochemistry from the University of Neuchatel in 2013. This was followed by seven months of postdoc at EPFL in the Atmospheric Particles Research Laboratory and two years as research associate at Tokyo Institute of Technology (Japan) where he conducted studies on nitrous oxide biogeochemistry in oceans. From 2015 to 2018, he was research scientist in the Laboratory for Water Quality and Treatment at EPFL where he conducted research on disinfection by-products and antibiotic resistant bacteria. Since May 2018, he is director of the Central Environmental Laboratory at the Institute of Environmental Engineering of EPFL.

Dominique Grandjean

Karen Scrivener

De nationalité anglaise, Karen Scrivener est née en 1958. Au cours de sa carrière, ses travaux et sa recherche traitaient des domaines suivants: Identification du développement microstucturale pendant l'hydratation du ciment. Elaboration d'une approche multitechnique pour étudier la microstucture des ciments et bétons, avec accent sur la quantification par analyse des images d'électrons retrodiffusés. Caractérisation de l'auréole de transition de la pâte de ciment autour des granulats. Compréhension des processus de dégardation des bétons, en particulier le gonflement lié à la formation de l'éttringite retardée dans les bétons étuvés.

Arnaud Magrez

Education PhD., Materials Science, summa cum laude, Université de Nantes, 2002 M.S., Chemistry, Université des Sciences et Technologies de Lille, 1999 Academic positions Head of the Crystal Growth Facility, EPFL, 2012-present Research Associate, Laboratoire de Physique de la Matière Complexe, EPFL, 2003-2012 Research Fellow, Peter Grunberg Institute, FZ-Juelich, 2002-2003 Administrative positions at EPFL Scientific staff member, EPFL Assembly, 2015-present Scientific staff member, School Council SB, 2014-present Member of the IPHYS office 2016-present Member of the ICMP office 2012-2015 Member of the safety committee of ICMP 2010-2015

Related concepts (2)

Ion

Adsorption