Adsorption-desorption studies

Further adsorption/desorption study 14-day earthworm toxicity Study of the effects on soil microorganisms Short-term toxicity to plants... 

M Company (2001d) Soil adsorption/desorption study of potassium perfluorooctane sulfonate (PFOS). 3M Company, 3M Environmental Laboratory, Laboratory Project Number E00-1311, EPA Docket AR226-1030a030... 

Calgon Filtrasorb 400 activated carbon, for which some properties are listed in table 1, was used. It is originally designed for wastewater treatment, but it was found to be useful in adsorption/desorption studies. 

In the case of the CO2 adsorption/desorption studies, the opposite behaviour was found. When starting from the catalyst reduced at 773 K, about 50% of the preadsorbed CO2 was desorbed as CO, the process being completely suppressed on the oxidized catalyst. 

Nirdosh, I., Trembley, W.B., and Johnson, C.R., Adsorption-desorption studies on the "Ra-hydrated metal oxide systems. Hydrometallurgy, 24. 237, 1990. 

The complete adsorption-desorption study of the nitrogen isotherm revealed that our sample of VPI-5 was microporous as well as mesoporous. The rapid rise in the volume within the relative pressure range less than 0.01 and upward trend of the rise in the volume thereafter are indicative of this phenomenon as can be seen in Figure 4. The desorption part of the isotherm traces the hysteresis loop similar to type A which is indicative of the presence of a mesoporosity created by a packing of the needle like crystals. 

Additional accumulation study Additional degradation studies Investigation of environmental mobility Further adsorption/desorption study Further fish toxicity studies Bird toiicity studies... 

A dual-channel ATR flow cell has been fabricated and tested in a variety of protein adsorption/desorption studies, permitting the direct comparison of two surfaces or two flowing solutions under otherwise identical conditions. 

The desorption of solvents from soil has not been extensively measured. In the application of advection-dispersion models to predict solute movement, it is generally assumed that adsorption is reversible. However, the adsorption of the solutes in T able 17.1.1 may not be reversible. For example, hysteresis is often observed in pesticide adsorption-desorption studies with soils. The measurement and interpretation of desorption data for solid-liquid systems is not well understood.Once adsorbed, some adsorbates may react further to become covalently and irreversibly bound, while others may become physically trapped in the soil matrix. The non-singularity of adsorption-desorption may sometimes result from experimental artifacts. ... 

Large-scale molecular dynamics simulations [108] of the polymerization of sihdc acid in aqueous solution using specially adapted potentials have yielded realistic activation energies, and extrapolations based on simulated reaction rates agree within one order of magnitude with observations. In view of the complexities involved, a simulation of host-guest relationships inside a sol-gel-encapsulated medium is still awaited, but theoretical adsorption-desorption studies have already been initiated [109]. 

Lin, J.-Y., West, A.C., 2010. Adsorption—desorption study of benzotriazole in a phosphate-based electrolyte for Cu electrochemical mechanical planarization. Electrochim. Acta 55, 2325-2331. 

Radzi AASM, Yusop SFM, Rusop M, Abdullah S (2012) Struetural and nitrogen gas adsorption-desorption studies of Bragg grating waveguide fabrieated on porous silicon nanostructure. lOP... 

Adsorption-desorption studies were replicated for five times and desorbed super absorbent hydrogel were washed with distilled water before applying the follow-... 

Corresponding Nj adsorption-desorption, studies showed that the porosity was reduced from -36% (random close packing) to -25% (face centered cubic) as U was varied from 12.7 to 45.7 cm/min. O.C. Frye and C.J. Brinker, unpublished. 

Abstract Adsorption-desorption studies addressing the influence of surfaces and gas molecules associated to energy concepts and different mechanisms and models based on ideal and non-uniform surface energy on metals, metal oxides and semiconductors. 

Recovery and regeneration of consumed adsorbents and metals respectively is very important as it will reduce the cost of remediation of heavy metals and other contaminants in our environment [204], Adsorption/ desorption studies are useful for generating essential information on the mobility of chemicals and their distribution in the soil, water and air compartments of our biosphere [163, 167], Indeed the energetic barriers for desorption are much higher in a number of situations than the corresponding barriers for adsorption. Particles desorb regardless of their local environment. The information on desorption of adsorbed metals from biomass is scanty in the literature [78, 220, 33]. 

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