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Concept

Sorption

Publications associées (12)

Characterization of water sorption cycle in the cement microstructure of controlled oxide composition

Monisha Rastogi

This thesis investigates the water vapour sorption behaviour of samples with maximized calcium-silicate-hydrate (C-S-H) content. Primarily, the role of heterogeneous and homogeneous cavitation has been studied during the drying of cementitious materials. C ...

EPFL2022

Dynamic CO2 sorption on MgO-based sorbent in the presence of CO and H2O at elevated pressures

Seongmin Jin

The presence of gas species other than the target adsorbate in practical conditions causes complications in implementing a sorption-based process because of synergistic or detrimental effects on the sorption mechanism. MgO-based sorbents have attracted mas ...

2022

Adsorption of progesterone onto microplastics and its desorption in simulated gastric and intestinal fluids

Florian Frédéric Vincent Breider, Dominique Grandjean, Thibault Béranger Masset, Cécilia Laetitia Carla Siri

The sorption of Hydrophobic Organic Compound (HOC) onto microplastics is relatively well reported in the literature, while their desorption remains poorly investigated, and especially in biological ﬂuids. The present study investigated the sorption and des ...

2021

Two dimensional diffusion-controlled triplet–triplet annihilation kinetics

Hubert Girault, Astrid Johana Olaya Avendano, Grégoire Clément Gschwend

Diffusion controlled chemical reactions are usually observed in three dimensionalmedia. In contrast, planar bimolecular reactions taking place between reagents adsorbed at a soft interface are two-dimensional and therefore cannot be studied within the same ...

2019

Gas pressure measurement device

Ian Michael Rousseau, Pirouz Sohi

The present invention concerns vacuum pressure gauge or gas pressure measurement device comprising a polar semiconductor structure, at least one light source for illuminating a surface of the polar semiconductor structure, measurement means configured to m ...

2019

Contaminant loading and competitive access of Pb, Zn and Mn(III) to vacancy sites in biogenic MnO2

Louise Helene Soegaard Jensen

The scavenging properties of MnO2 are largely attributed to sorption on layer vacancy sites. However, co-occurrence of Mn(II, III) with MnO2 can change mineral reactivity by modifying its Mn(III) content or number of free vacancy sites. These processes are ...

2018

Hydration states of AFm cement phases

Karen Scrivener

The AFm phase, one of the main products formed during the hydration of Portland and calcium aluminate cement based systems, belongs to the layered double hydrate (LDH) family having positively charged layers and water plus charge-balancing anions in the in ...

Pergamon-Elsevier Science Ltd2015

Distinctive Arsenic(V) Trapping Modes by Magnetite Nanoparticles Induced by Different Sorption Processes

Yuheng Wang

Arsenic sorption onto iron oxide spinels such as magnetite may contribute to arsenic immobilization at redox fronts in soils, sediments, and aquifers, as well as in putative remediation and water treatment technologies. We have investigated As(V) speciatio ...

2011

Hydrogen storage properties of as-synthesized and severely deformed magnesium - multiwall carbon nanotubes composite

Arnaud Magrez

We prepared a Mg-2 mass % multiwall carbon nanotubes composite employing a powder metallurgy technique. The kinetics of hydrogen absorption/desorption of the as-synthesized composite was much faster than that of reference samples of pure Mg. The pressure-c ...

2010

Sorption of hydrophobic organic compounds (HOC) in rapeseed oil bodies

Ian William Marison, Julien Boucher

Oil-bodies are minute plant organelles (0.5-2.0 mu m diameter) consisting of an oil core surrounded by a phospholipid monolayer/proteinaceous membrane. Oil-bodies have been isolated from rapeseed seeds and demonstrated to constitute a novel type of micro-c ...

Elsevier2008

Immobilization of rapeseed press-cake in an alginate matrix for the sorption of atrazine

Urs von Stockar, Ian William Marison, Julien Boucher, Véronique Breguet

Due to residual oil retained within it, rapeseed press-cake has been shown to be effective for the removal of atrazine from water through an absorption mechanism. However, it is difficult to put this into practice due to the hygroscopic nature of the press ...

2008

Oleaginous plant seeds and seed by-products for water treatment

Julien Boucher

The treatment of water is needed for the supply of adequate quantity and quality of drinking water, as well as before the discharge of wastewater to the environment. Treatment technologies are often costly, involve chemicals that may have detrimental effec ...

EPFL2006