Exhaust gas purification process using fly ash-based sorbents

被引：15
|
作者：
Sciubidlo, A. [1 ]
Majchrzak-Kuceba, I. [1 ]
机构：
[1] Czestochowa Tech Univ, Inst Adv Energy Technol, 73 Dabrowskiego St, PL-42201 Czestochowa, Poland
来源：
FUEL | 2019年 / 258卷
关键词：
Exhaust gas; NO2; Adsorption; Fly-ash based sorbents; MESOPOROUS SILICA MATERIALS; FLUE-GAS; COAL; ADSORPTION; NOX; SEPARATION; ZEOLITES;
D O I：
10.1016/j.fuel.2019.116126
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
A fly ash-based sorbents has been designed for NO2 capture and separation from exhaust gases at room temperature. NO2 adsorbents-Na-X, SBA-15, MCM-41 were prepared by synthesizing from fly ash and modifying with polyethylene glycol (PEG). The sorption capacity of sorbents have been evaluated for NO2 removal from the simulated gas streams in a thermogravimetric analyzer TGA/DSC1at 25 degrees C under atmospheric pressure. The results show that the highest sorption capacity characterized zeolite Na-X-(FA) 44.7 mg NO2 g(-1) sorbent. After impregnation with PEG, the sorption capacity of SBA-15(FA) increased from 1.6 mg NO(2)g(-1) to 3.2 mg NO(2)g(-1), while for Na-X(FA) and MCM-41(FA) dropped after impregnation with PEG. In addition, the spent sorbent can be regenerated easily and completely by heating to 100 degrees C. With this study the present study may open a new window for developing high-performance fly ash-based sorbents for NO2 removal from exhaust gases.
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页数：7
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