The low-temperature SCR of NO over rice straw and sewage sludge derived char

Jin Sun Cha; Jong Cheol Choi; Jeong Huy Ko; Young Kwon Park; Sung Hoon Park; Kwang Eun Jeong; Seung Soo Kim; Jong Ki Jeon

doi:10.1016/j.cej.2009.10.027

The low-temperature SCR of NO over rice straw and sewage sludge derived char

Jin Sun Cha, Jong Cheol Choi, Jeong Huy Ko, Young Kwon Park, Sung Hoon Park, Kwang Eun Jeong, Seung Soo Kim, Jong Ki Jeon

School of Environmental Engineering

Research output: Contribution to journal › Article › peer-review

126 Scopus citations

Abstract

Rice straw char and sewage sludge char were applied as catalysts for selective catalytic reduction between 50 and 250 °C using ammonia as the reducing agent. Each char was activated physically, using water vapor, or chemically, using KOH. The characteristics of the prepared catalysts were analyzed through elemental analysis, N₂ adsorption-desorption, FT-IR, NO-TPD, NH₃-TPD, and NO_x removal efficiency. The physically activated chars showed characteristics similar to those of the non-activated chars, whereas the chemically activated chars exhibited increased specific surface areas, pore volumes, NO adsorption capacities, NH₃ adsorption capacities, and oxygen functional group amounts, leading to higher NO_x removal efficiency. When the catalysts were impregnated with 3 wt% manganese, NO_x removal efficiency significantly increased. In particular, the NO_x removal efficiency was highest when the chemically activated chars were impregnated with manganese.

Original language	English
Pages (from-to)	321-327
Number of pages	7
Journal	Chemical Engineering Journal
Volume	156
Issue number	2
DOIs	https://doi.org/10.1016/j.cej.2009.10.027
State	Published - 15 Jan 2010

Keywords

Chemical activation
Manganese
Rice straw char
Selective catalytic reduction (SCR)
Sewage sludge char

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10.1016/j.cej.2009.10.027

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title = "The low-temperature SCR of NO over rice straw and sewage sludge derived char",

abstract = "Rice straw char and sewage sludge char were applied as catalysts for selective catalytic reduction between 50 and 250 °C using ammonia as the reducing agent. Each char was activated physically, using water vapor, or chemically, using KOH. The characteristics of the prepared catalysts were analyzed through elemental analysis, N2 adsorption-desorption, FT-IR, NO-TPD, NH3-TPD, and NOx removal efficiency. The physically activated chars showed characteristics similar to those of the non-activated chars, whereas the chemically activated chars exhibited increased specific surface areas, pore volumes, NO adsorption capacities, NH3 adsorption capacities, and oxygen functional group amounts, leading to higher NOx removal efficiency. When the catalysts were impregnated with 3 wt% manganese, NOx removal efficiency significantly increased. In particular, the NOx removal efficiency was highest when the chemically activated chars were impregnated with manganese.",

keywords = "Chemical activation, Manganese, Rice straw char, Selective catalytic reduction (SCR), Sewage sludge char",

author = "Cha, {Jin Sun} and Choi, {Jong Cheol} and Ko, {Jeong Huy} and Park, {Young Kwon} and Park, {Sung Hoon} and Jeong, {Kwang Eun} and Kim, {Seung Soo} and Jeon, {Jong Ki}",

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T1 - The low-temperature SCR of NO over rice straw and sewage sludge derived char

AU - Cha, Jin Sun

AU - Choi, Jong Cheol

AU - Ko, Jeong Huy

AU - Park, Young Kwon

AU - Park, Sung Hoon

AU - Jeong, Kwang Eun

AU - Kim, Seung Soo

AU - Jeon, Jong Ki

PY - 2010/1/15

Y1 - 2010/1/15

N2 - Rice straw char and sewage sludge char were applied as catalysts for selective catalytic reduction between 50 and 250 °C using ammonia as the reducing agent. Each char was activated physically, using water vapor, or chemically, using KOH. The characteristics of the prepared catalysts were analyzed through elemental analysis, N2 adsorption-desorption, FT-IR, NO-TPD, NH3-TPD, and NOx removal efficiency. The physically activated chars showed characteristics similar to those of the non-activated chars, whereas the chemically activated chars exhibited increased specific surface areas, pore volumes, NO adsorption capacities, NH3 adsorption capacities, and oxygen functional group amounts, leading to higher NOx removal efficiency. When the catalysts were impregnated with 3 wt% manganese, NOx removal efficiency significantly increased. In particular, the NOx removal efficiency was highest when the chemically activated chars were impregnated with manganese.

AB - Rice straw char and sewage sludge char were applied as catalysts for selective catalytic reduction between 50 and 250 °C using ammonia as the reducing agent. Each char was activated physically, using water vapor, or chemically, using KOH. The characteristics of the prepared catalysts were analyzed through elemental analysis, N2 adsorption-desorption, FT-IR, NO-TPD, NH3-TPD, and NOx removal efficiency. The physically activated chars showed characteristics similar to those of the non-activated chars, whereas the chemically activated chars exhibited increased specific surface areas, pore volumes, NO adsorption capacities, NH3 adsorption capacities, and oxygen functional group amounts, leading to higher NOx removal efficiency. When the catalysts were impregnated with 3 wt% manganese, NOx removal efficiency significantly increased. In particular, the NOx removal efficiency was highest when the chemically activated chars were impregnated with manganese.

KW - Chemical activation

KW - Manganese

KW - Rice straw char

KW - Selective catalytic reduction (SCR)

KW - Sewage sludge char

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EP - 327

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

IS - 2

ER -

The low-temperature SCR of NO over rice straw and sewage sludge derived char

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Keywords

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