Modeling of mercury sorption by activated carbon in a confined, a semi-fluidized, and a fluidized bed

Ho, T.C.; Kobayashi, Nariyoshi; Lee, Y.K.; Lin, Che‐Jen; Hopper, J.R.

doi:10.1016/s0956-053x(02)00021-1

Cited by 22 publications

(15 citation statements)

References 7 publications

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“…It was again observed that the model is capable of simulating their data well (see Figs. 9 and 10) and that all three equilibrium expressions describe equally well these literature data (Ho et al, 2002). The best-fit values of the parameters for these simulations are summarized in Table 3.…”

Section: Comparison With Literature Datasupporting

confidence: 58%

Experimental and Kinetic Study of Mercury Adsorption on Various Activated Carbons in a Fixed-Bed Adsorber

Ho¹,

Kobayashi²,

Lee³

et al. 2004

Environmental Engineering Science

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This study investigated experimentally and theoretically the characteristics of mercury sorption by activated carbons. Experiments were carried out in a fixed-bed mercury sorption facility composed of a mercury permeation tube embedded in an isothermal water bath, a fix-bed adsorber enclosed in a furnace, and an on-line GC for mercury measurements. The proposed sorption model involved the coupling of a kinetic model based on the mechanisms of surface equilibrium and external mass transfer, and a material balance model based on the tank-in-series approach. Three different equilibrium expressions were used in the model, i.e., the Henry's Law, the Langmuir isotherm, and the Freundlich isotherm. In additional to kinetic simulations using the developed model, an equilibrium model was also used to simulate the thermodynamically preferred mercury species under the experimental conditions. The experimental results have indicated that the factors affecting the adsorption efficiency include the type of activated carbon, the adsorption temperature, the inlet mercury concentration, and the gas flow rate. The developed kinetic model has been found to describe well both the current experimental results and those reported in the literature.

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Section: Comparison With Literature Datasupporting

confidence: 58%

Experimental and Kinetic Study of Mercury Adsorption on Various Activated Carbons in a Fixed-Bed Adsorber

Ho¹,

Kobayashi²,

Lee³

et al. 2004

Environmental Engineering Science

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“…Subsequently a good number of research articles relating to various applications of the semi-fluidized bed system have been reported in literature [3][4][5][6][7][8][9][10][11][12][13][14]. Additionally, fairly a good number of patents claimed since the year 1958, relating to the best possible applications of the semi-fluidized bed in many industrial processes are listed in SciFinder Scholar database like the recent one by Liu et al [15].…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamics of regular particles in a liquid–solid semi-fluidized bed

2009

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“…When the mercury concentration in flue gas is very low, Ho [18] suggested that it is applicable to describe the mercury adsorption process as that the Freundlich exponent is equal to 1. So Eq.…”

Section: Mercury Adsorption Efficiencymentioning

confidence: 99%

“…Recently, Ho et al [18] presented a process model to simulate elemental mercury sorption by active carbon in confined, semi-fluidized and fluidized bed, respectively. This model coupled the mechanisms of surface equilibrium, external mass transfer and material balance and also used experimental data to fit the adsorption isotherm equation.…”

Section: Introductionmentioning

confidence: 99%