[1] Wang Ligang, Chen Changhe, Kruse H.Kolker,. Modeling mercury adsorption on carbon particlesin simulated flue gas [J]. Journal of Southeast University (English Edition), 2006, 22 (2): 256-259. [doi:10.3969/j.issn.1003-7985.2006.02.023]

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Modeling mercury adsorption on carbon particlesin simulated flue gas()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

22

Issue:

2006 2

Page:

256-259

Research Field:

Environmental Science and Engineering

Publishing date:

2006-06-30

Info

Title:

Modeling mercury adsorption on carbon particlesin simulated flue gas

Author(s):

Wang Ligang¹;  Chen Changhe²;  Kruse H.Kolker³

¹Department of Thermal Engineering, University of Science and Technology, Beijing 100083, China
²Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
³Department of Chemical Engineering, University of North Dakota, Grand Forks, ND 58202, USA

Keywords:

mercury;  adsorption;  residual carbon;  fly ash;  activated carbon

PACS:

X701

DOI:

10.3969/j.issn.1003-7985.2006.02.023

Abstract:

A model was developed to describe the adsorption characteristic of mercury in flue gas based on one residual carbon sample and one activated carbon sample.The differential equations were established with mass balance of mercury in the gas phase and in the solid phase.Then the model was solved using a Matlab program with a Runge-Kutta process.The mercury adsorption isotherms of these two adsorbents were obtained by breakthrough column experiments.The results show that at low gas phase mercury concentrations(<0.3 mg/m³), the adsorption equilibrium of residual carbon is in accord with the case of a type Ⅱ isotherm of the Freundich theory.Whereas the data of activated carbon falls into the Langmuir relationship, it is the case of a type Ⅲ isotherm.The experimental data were fitted to the Freundlich model by Matlab software.The variances of mercury concentration are smaller than 0.81 which implies the agreement between measurements and simulation is quite agreeable considering the wide scatter of the measurements.This model is useful for forecasting mercury removal efficiency and is helpful to the mechanism analysis of mercury adsorption on carbon-based adsorbent.

References:

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[9] Brunauer S.The adsorption of gases and vapors. Volume 1[M].New Jersey:Princeton University Press, 1945.355-462.

Memo

Memo:

Biography: Wang Ligang(1970—), male, doctor, lecturer, wangligang@me.ustb.edu.cn.

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