Removal of gas-phase As<sub>2</sub>O<sub>3</sub> in dry process by metal oxide adsorbents

ZHANG Yue; WANG Chun-bo; LIU Hui-min; SUN Zhe; LI Wen-han; ZHANG Yong-sheng; PAN Wei-ping

Volume 43 Issue 04

Apr. 2015

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Article Navigation > Journal of Fuel Chemistry and Technology > 2015 > 43(04): 476-482

ZHANG Yue, WANG Chun-bo, LIU Hui-min, SUN Zhe, LI Wen-han, ZHANG Yong-sheng, PAN Wei-ping. Removal of gas-phase As2O3 in dry process by metal oxide adsorbents[J]. Journal of Fuel Chemistry and Technology, 2015, 43(04): 476-482.

Citation:

ZHANG Yue, WANG Chun-bo, LIU Hui-min, SUN Zhe, LI Wen-han, ZHANG Yong-sheng, PAN Wei-ping. Removal of gas-phase As₂O₃ in dry process by metal oxide adsorbents[J]. Journal of Fuel Chemistry and Technology, 2015, 43(04): 476-482.

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Removal of gas-phase As₂O₃ in dry process by metal oxide adsorbents

1.
Institute for Energy Environment Science and Engineering, Department of Energy Power & Mechanical Engineering, North China Electric Power University, Beijing 102206, China;
2.
Institutefor Combustion Scienceand Environmental Technology, Western Kentucky University, Bowling Green, Kentucky 42101, USA

Received Date: 2014-11-05
Publish Date: 2015-04-30

Abstract

Abstract

The adsorption of gas-phase As₂O₃ by metal oxides like CaO, Fe₂O₃ and Al₂O₃ was investigated in a fixed bed reactor with an arsenic continuous generation facility. The results indicated that the adsorption of As₂O₃ on metal oxides is dominated by chemical adsorption at a temperature between 600 and 900 ℃; the adsorption quantity and efficiency are decreased with the increase of temperature. The arsenic adsorption ability of three metal oxide follows the order of Fe₂O₃ > CaO > Al₂O₃. The saturation adsorption phenomenon will not occur under the current conditions with the concentration of arsenic in the gas phase in the range between 4.5×10^-6 and 13.5×10^-6 (volume ratio); the adsorption efficiency for each adsorbent is only affected by the adsorption temperature and the same adsorption efficiency can be achieved with different arsenic concentrations.
- gas-phase As₂O₃,
- adsorbent,
- metal oxide,
- dry adsorption process,
- CaO,
- Fe₂O₃

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References(25)

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