Influence of oxygen on adsorption of elemental mercury vapors onto activated carbon

Karatza, Despina; Lancia, A.; Prisciandaro, Marina; Musmarra, Dino; Celso, Giuseppe Mazziotti di

doi:10.1016/j.fuel.2013.03.068

Cited by 47 publications

(26 citation statements)

References 27 publications

(36 reference statements)

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“…O 2 improves mercury retention [20,23] whereas reactive gases such as SO x and NO x may modify the surface of the carbons and favor or inhibit mercury adsorption [24][25][26][27]. Other gases such as H 2 O may also play an important role in the mechanism of Hg adsorption on the surface of the activated carbon [20,[28][29][30], and it has also been suggested that CO 2 might compete with Hg for the same adsorption sites [22].…”

Section: Introductionmentioning

confidence: 99%

Influence of a CO2-enriched flue gas on mercury capture by activated carbons

López-Antón

Rumayor

Dı́az-Somoano

et al. 2015

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Influence of a CO2-enriched flue gas on mercury capture by activated carbons

López-Antón

Rumayor

Dı́az-Somoano

et al. 2015

Chemical Engineering Journal

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“…Among these mercury species, metallic or elemental mercury (Hg°) has been a concern of environmental protection agencies owing to its anthropogenic sources and vapour nature of its emission into the environment. It has been reported that adsorbents, such as silica-based materials (Johari et al, 2014a;Makkuni et al, 2005;Meyer et al, 2007), metal oxides (He et al, 2013), fly ash (Gao et al, 2013), clay (Cai et al, 2014) and activated carbon (Karatza et al, 2013), have been very promising for capturing elemental mercury in gas streams. It has been reported that adsorbents, such as silica-based materials (Johari et al, 2014a;Makkuni et al, 2005;Meyer et al, 2007), metal oxides (He et al, 2013), fly ash (Gao et al, 2013), clay (Cai et al, 2014) and activated carbon (Karatza et al, 2013), have been very promising for capturing elemental mercury in gas streams.…”

Section: Introductionmentioning

confidence: 99%

Removal performance of elemental mercury by low-cost adsorbents prepared through facile methods of carbonisation and activation of coconut husk

et al. 2014

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The preparation of chars and activated carbon as low-cost elemental mercury adsorbents was carried out through the carbonisation of coconut husk (pith and fibre) and the activation of chars with potassium hydroxide (KOH), respectively. The synthesised adsorbents were characterised by using scanning electron microscopy, Fourier transform infrared spectroscopy and nitrogen adsorption/desorption analysis. The elemental mercury removal performance was measured using a conventional flow type packed-bed adsorber. The physical and chemical properties of the adsorbents changed as a result of the carbonisation and activation process, hence affecting on the extent of elemental mercury adsorption. The highest elemental mercury (Hg°) adsorption capacity was obtained for the CP-CHAR (3142.57 µg g(-1)), which significantly outperformed the pristine and activated carbon adsorbents, as well as higher than some adsorbents reported in the literature.

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“…No irreversible binding by chemisorption can be observed. In contrast to AC 01, AC 02 has a high oxygen content, which can be an indicator for the presence of functional oxygen groups on the carbon surface that promote chemisorption (e.g., , ). The isotherms on fresh and (loaded + desorbed) AC 02 run almost parallel, whereby the isotherm on the fresh activated carbon has an offset of approx.…”

Section: Resultsmentioning

confidence: 99%

Comprehensive Methodology for the Investigation of Mercury Adsorption on Activated Carbons

Ambrosy

Pasel

Luckas

et al. 2019

Chemie Ingenieur Technik

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In mercury adsorption on activated carbons both physisorptive and chemisorptive mechanisms play a role. The systematic investigation of Hg0 chemisorption is difficult because equilibrium capacities cannot be determined due to slow adsorption mechanisms. Therefore, the present publication suggests a three‐step approach: 1) Breakthrough curves are used to assess the dynamics of Hg0 adsorption. 2) The contributions of physisorption and chemisorption can be distinguished by coupled adsorption and desorption experiments. 3) Temperature programmed desorption (TPD) experiments are performed to get information about specific chemisorptive binding sites on the surface. This approach was tested on four characteristic examples of impregnated and non‐impregnated activated carbons.

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Influence of oxygen on adsorption of elemental mercury vapors onto activated carbon

Cited by 47 publications

References 27 publications

Influence of a CO2-enriched flue gas on mercury capture by activated carbons

Influence of a CO2-enriched flue gas on mercury capture by activated carbons

Removal performance of elemental mercury by low-cost adsorbents prepared through facile methods of carbonisation and activation of coconut husk

Comprehensive Methodology for the Investigation of Mercury Adsorption on Activated Carbons

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