REUSE OF COAL COMBUSTION ASH AS SORBENT: THE EFFECT OF GASIFICATION TREATMENTS

被引：8

作者：

Balsamo, Marco ^{[1
]}

Di Natale, Francesco ^{[1
]}

Erto, Alessandro ^{[1
]}

Lancia, Amedeo ^{[1
]}

Montagnaro, Fabio ^{[2
]}

Santoro, Luciano ^{[2
]}

机构：

[1] Univ Naples Federico II, Dipartimento Ingn Chim, I-80125 Naples, Italy

[2] Univ Naples Federico II, Dipartimento Sci Chim, Naples, Italy

来源：

COMBUSTION SCIENCE AND TECHNOLOGY | 2012年 / 184卷 / 7-8期

关键词：

Adsorbent physico-chemical characterization; Coal ash gasification; Steam/CO2; treatments; Waste beneficiation; POWDERED ACTIVATED CARBON; WASTE-WATER TREATMENT; FLY-ASH; ADSORPTION; STEAM; ETTRINGITE; ADSORBENTS; CO2;

D O I：

10.1080/00102202.2012.663988

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

Beneficiation through gasification of coal combustion ash coming from an industrial power plant aimed at its reuse as adsorbent is addressed. The raw ash was gasified in a tubular reactor at 850 degrees C for times ranging from 10 to 60 min, using either steam or CO2 as gasifying agents. The relationships among ash properties, gasification treatments, and properties of the gasified ashes deserve investigation. Therefore, ash characteristics (such as carbon content and porosimetric, diffractometric, and granulometric properties) were correspondingly determined. In the light of a critical analysis of the obtained results, gasification conditions able to make the parent ash a potentially better adsorbent material were defined, with a particular emphasis on similarities and differences between steam and CO2 gasification. Finally, preliminary results concerning cadmium adsorption from aqueous solutions have been reported.

引用

页码：956 / 965

页数：10

共 26 条

[1]

Coal fly ash as raw material for the manufacture of geopolymer-based products [J].