Adsorption of Hg and NOX on coal by-products

Aurora Rubel; Rodney Andrews; Rolando Gonzalez; Jack Groppo; Thomas Robl

doi:10.1016/j.fuel.2005.01.006

Adsorption of Hg and NO_X on coal by-products

Aurora Rubel, Rodney Andrews, Rolando Gonzalez, Jack Groppo, Thomas Robl

Producción científica: Article › revisión exhaustiva

43 Citas (Scopus)

Resumen

The adsorption of Hg and NO_X on gasifier and combustion by-products was investigated. Carbon-rich fractions were produced by a density separation technique from a gasifier char (GC) and a pulverized coal combustion blended fly/bottom ash (CC) recovered from a pond. Both fractions were subjected to steam activation at 875 °C. As-received and activated chars and two commercial carbons developed specifically for Hg and NO_X adsorption were tested and compared for Hg and NO_X adsorption capacities. The Hg adsorption capacity of GC was found as good as a specialty commercial carbon designed for Hg capture from flue gases. Steam activation or heating to 900 °C destroyed GC's adsorption capability. GC adsorbed one-third of the NO_X uptake of a commercial carbon used for NO_X adsorption. Hg-laden GC captured even more NO_X than the as-received GC. Possible explanations for the performance of GC will be discussed. The CC material was a poor performer for both Hg and NO_X capture.

Idioma original	English
Páginas (desde-hasta)	911-916
Número de páginas	6
Publicación	Fuel
Volumen	84
N.º	7-8
DOI	https://doi.org/10.1016/j.fuel.2005.01.006
Estado	Published - may 2005

Nota bibliográfica

Funding Information:
This material is based upon work supported by the Department of Energy, Federal Energy Technology Center under Cooperative Agreement DE-FC26-98FT40350. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the reviews of the Department of Energy, Federal Energy Technology Center.

Financiación

This material is based upon work supported by the Department of Energy, Federal Energy Technology Center under Cooperative Agreement DE-FC26-98FT40350. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the reviews of the Department of Energy, Federal Energy Technology Center.

Financiadores	Número del financiador
Federal Energy Technology Center	DE-FC26-98FT40350
Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory

ASJC Scopus subject areas

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
Organic Chemistry

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abstract = "The adsorption of Hg and NOX on gasifier and combustion by-products was investigated. Carbon-rich fractions were produced by a density separation technique from a gasifier char (GC) and a pulverized coal combustion blended fly/bottom ash (CC) recovered from a pond. Both fractions were subjected to steam activation at 875 °C. As-received and activated chars and two commercial carbons developed specifically for Hg and NOX adsorption were tested and compared for Hg and NOX adsorption capacities. The Hg adsorption capacity of GC was found as good as a specialty commercial carbon designed for Hg capture from flue gases. Steam activation or heating to 900 °C destroyed GC's adsorption capability. GC adsorbed one-third of the NOX uptake of a commercial carbon used for NOX adsorption. Hg-laden GC captured even more NOX than the as-received GC. Possible explanations for the performance of GC will be discussed. The CC material was a poor performer for both Hg and NOX capture.",

keywords = "Coal by-products, Mercury, NO",

author = "Aurora Rubel and Rodney Andrews and Rolando Gonzalez and Jack Groppo and Thomas Robl",

note = "Funding Information: This material is based upon work supported by the Department of Energy, Federal Energy Technology Center under Cooperative Agreement DE-FC26-98FT40350. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the reviews of the Department of Energy, Federal Energy Technology Center.",

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AU - Andrews, Rodney

AU - Gonzalez, Rolando

AU - Groppo, Jack

AU - Robl, Thomas

N1 - Funding Information: This material is based upon work supported by the Department of Energy, Federal Energy Technology Center under Cooperative Agreement DE-FC26-98FT40350. Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the reviews of the Department of Energy, Federal Energy Technology Center.

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N2 - The adsorption of Hg and NOX on gasifier and combustion by-products was investigated. Carbon-rich fractions were produced by a density separation technique from a gasifier char (GC) and a pulverized coal combustion blended fly/bottom ash (CC) recovered from a pond. Both fractions were subjected to steam activation at 875 °C. As-received and activated chars and two commercial carbons developed specifically for Hg and NOX adsorption were tested and compared for Hg and NOX adsorption capacities. The Hg adsorption capacity of GC was found as good as a specialty commercial carbon designed for Hg capture from flue gases. Steam activation or heating to 900 °C destroyed GC's adsorption capability. GC adsorbed one-third of the NOX uptake of a commercial carbon used for NOX adsorption. Hg-laden GC captured even more NOX than the as-received GC. Possible explanations for the performance of GC will be discussed. The CC material was a poor performer for both Hg and NOX capture.

AB - The adsorption of Hg and NOX on gasifier and combustion by-products was investigated. Carbon-rich fractions were produced by a density separation technique from a gasifier char (GC) and a pulverized coal combustion blended fly/bottom ash (CC) recovered from a pond. Both fractions were subjected to steam activation at 875 °C. As-received and activated chars and two commercial carbons developed specifically for Hg and NOX adsorption were tested and compared for Hg and NOX adsorption capacities. The Hg adsorption capacity of GC was found as good as a specialty commercial carbon designed for Hg capture from flue gases. Steam activation or heating to 900 °C destroyed GC's adsorption capability. GC adsorbed one-third of the NOX uptake of a commercial carbon used for NOX adsorption. Hg-laden GC captured even more NOX than the as-received GC. Possible explanations for the performance of GC will be discussed. The CC material was a poor performer for both Hg and NOX capture.

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