Removal of chlorinated organic volatile compounds by gas phase adsorption with activated carbon

Lemus, Jesús; Martin-Martinez, María; Palomar, José; Gómez-Sainero, L.M.; Gilarranz, Miguel Á.; Rodrı́guez, Juan J.

doi:10.1016/j.cej.2012.09.021

Cited by 113 publications

(47 citation statements)

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“…This linear relationship is also nearly independent of the IL used, since the three ones here considered have similar density (Table 2). On the contrary, h MTZ increases with temperature for C cap (see Table 4), which is the commonly reported effect of temperature on the adsorption of gases by porous carbons [66]. This effect is assignable to the higher NH 3 diffusivity in ILs at higher temperatures [22,23].…”

Section: Capture Experiments In Fixed-bed Columnmentioning

confidence: 68%

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

et al. 2016

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Encapsulated ionic liquids (ENILs) based on carbonaceous submicrocapsuleswere designed, synthesized and applied to the sorption of NH 3 from gas stream. The ENILs were prepared using three different task-specific ILs with adequate properties for NH 3 capture: 1-2(-hydroxyethyl)-3-methylimadazolium tetrafluoroborate (EtOHmimBF 4 ), choline bis(trifluoromethylsulfonyl)imide (CholineNTf 2 ) and tris(2hydroxyethyl)-methylammoniummethylsulfate [(EtOH) 3 MeNMeSO 4 ]. The ENILs synthesized were analyzed by different techniques to assess their morphology, chemical composition, porous structure and thermal stability. The capture of NH 3 was tested in fixed-bed experiments under atmospheric pressure. The influence of the type and load of IL, temperature (30, 45 and 60 ºC) and NH 3 inlet concentration was analyzed.Desorption of NH 3 from the exhausted ENILs was also studied at atmospheric pressure and temperatures in the range of 150 to 200 ºC. The ENILs prepared with task-specific ILs were found to be suitable for NH 3 capture in the fixed-bed operation. These systems can be a promising alternative to conventional absorption or adsorption due to: i) high sorption capacity controlled by IL selection, ii) remarkable mass transfer rate, iii) low 2 sensitiveness to high temperatures of the gas stream, iv) fast and complete regeneration of the exhausted ENIL at mild conditions; and v) recovery of NH 3 .

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Section: Capture Experiments In Fixed-bed Columnmentioning

confidence: 68%

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

et al. 2016

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“…¼ 0.36 cm 3 g À1 and V mesop. ¼ 0.14 cm 3 g À1 ) and a relatively low concentration of surface functional groups, 40 was measured. This AC-MkU was previously reported as an effective adsorbent to remove imidazolium ILs from aqueous solution, being its adsorption capacity strongly determined by the hydrophobic/hydrophilic character of the anion and the cation constituting the IL, as a consequence of the different interactions such as polar, van der Waals and hydrogen bonding.…”

Section: Resultsmentioning

confidence: 99%

Composition and structural effects on the adsorption of ionic liquids onto activated carbon

Lemus

Neves

Marques

et al. 2013

Environ. Sci.: Processes Impacts

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The applications and variety of ionic liquids (ILs) have increased during the last few years, and their use at a large scale will require their removal/recovery from wastewater streams. Adsorption on activated carbons Environmental impactThis work clearly contributes to the development and greater depth of an affordable and easy treatment to remove and/or recover ionic liquids (ILs) from aqueous effluents by adsorption on activated carbons (ACs). This work expands the number of ILs studied to 48 (including six cation families and different hydrophobic and hydrophilic anions) for the adsorption onto commercial AC from the aqueous phase and permits a better understanding of the inuence of the IL chemical structures on the adsorption process. In addition, the computational approach based on the quantum-chemical COSMO-RS is effectively applied to justify AC adsorption capacities for different natured ILs, in order to understand the further separation process.

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“…[1] VOCs are often noxious or carcinogenic, causing many severe environmental problems even at very low concentrations. [2] Moreover, many VOCs are implicated in the depletion of the stratospheric ozone layer and can contribute to global warming. [3,4] As a result of all these concerns, VOCs have drawn considerable attentions in recent years.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Activity of TiO₂ Loaded on BaBiO₃ Toward Degradation of Gaseous Benzene

Zeng

Zhong²,

et al. 2015

Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-

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TiO 2 /BaBiO 3 composites were prepared through a pore impregnating method and characterized by Brunauer-Emmett-Teller method, X-ray diffraction, UV-Vis diffuse reflectance, and X-ray photoelectron spectroscopic techniques. The composites exhibit higher photocatalytic activity than pure TiO 2 toward degradation of gaseous benzene under ultraviolet light irradiation. The effects of TiO 2 loading on the photocatalytic activity were investigated and the optimization of the TiO 2 /BaBiO 3 composite was obtained. The enhanced mechanism was also suggested.

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Removal of chlorinated organic volatile compounds by gas phase adsorption with activated carbon

Cited by 113 publications

References 50 publications

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

Composition and structural effects on the adsorption of ionic liquids onto activated carbon

Photocatalytic Activity of TiO₂ Loaded on BaBiO₃ Toward Degradation of Gaseous Benzene

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Removal of chlorinated organic volatile compounds by gas phase adsorption with activated carbon

Cited by 113 publications

References 50 publications

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

Ammonia capture from the gas phase by encapsulated ionic liquids (ENILs)

Composition and structural effects on the adsorption of ionic liquids onto activated carbon

Photocatalytic Activity of TiO2 Loaded on BaBiO3 Toward Degradation of Gaseous Benzene

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Product

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Photocatalytic Activity of TiO₂ Loaded on BaBiO₃ Toward Degradation of Gaseous Benzene