Carbon dioxide assisted thermal decomposition of cattle excreta

Sang Ryong Lee; Jechan Lee; Taewoo Lee; Seong Heon Cho; Jeong Ik Oh; Hana Kim; Daniel C.W. Tsang; Eilhann E. Kwon

doi:10.1016/j.scitotenv.2017.09.201

Carbon dioxide assisted thermal decomposition of cattle excreta

Sang Ryong Lee, Jechan Lee, Taewoo Lee, Seong Heon Cho, Jeong Ik Oh, Hana Kim, Daniel C.W. Tsang, Eilhann E. Kwon

Research output: Journal article publication › Journal article › Academic research › peer-review

11 Citations (Scopus)

Abstract

To develop the environmentally benign thermo-chemical process, this study placed great emphasis on the influence of CO2on pyrolysis of cattle excreta for energy recovery. To this end, this study evaluates the possible enhanced energy recovery from cattle excreta using CO2as reaction medium/feedstock in the thermal degradation of cattle excreta. The enhanced generation of CO in the presence of CO2reached up to 15.15 mol% (reference value: 0.369 mol%) at 690 °C, which was equivalent to ~ 4000 times more generation of CO. In addition to the enhanced generation of CO, the enhanced generation of H2and CH4in the thermal degradation of cattle excreta in CO2. Thus, the findings of this study revealed two genuine roles of CO2: 1) enhanced thermal cracking of volatile organic carbons (VOCs) evolved from the thermal degradation of cattle excreta and 2) direct reaction between VOCs and CO2via gas phase reaction.

Original language	English
Pages (from-to)	70-77
Number of pages	8
Journal	Science of the Total Environment
Volume	615
DOIs	https://doi.org/10.1016/j.scitotenv.2017.09.201
Publication status	Published - 15 Feb 2018

Keywords

Cattle excreta
CO utilization 2
Pyrolysis
Waste-to-energy

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Waste Management and Disposal
Pollution

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10.1016/j.scitotenv.2017.09.201

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title = "Carbon dioxide assisted thermal decomposition of cattle excreta",

abstract = "To develop the environmentally benign thermo-chemical process, this study placed great emphasis on the influence of CO2on pyrolysis of cattle excreta for energy recovery. To this end, this study evaluates the possible enhanced energy recovery from cattle excreta using CO2as reaction medium/feedstock in the thermal degradation of cattle excreta. The enhanced generation of CO in the presence of CO2reached up to 15.15 mol% (reference value: 0.369 mol%) at 690 °C, which was equivalent to ~ 4000 times more generation of CO. In addition to the enhanced generation of CO, the enhanced generation of H2and CH4in the thermal degradation of cattle excreta in CO2. Thus, the findings of this study revealed two genuine roles of CO2: 1) enhanced thermal cracking of volatile organic carbons (VOCs) evolved from the thermal degradation of cattle excreta and 2) direct reaction between VOCs and CO2via gas phase reaction.",

keywords = "Cattle excreta, CO utilization 2, Pyrolysis, Waste-to-energy",

author = "Lee, {Sang Ryong} and Jechan Lee and Taewoo Lee and Cho, {Seong Heon} and Oh, {Jeong Ik} and Hana Kim and Tsang, {Daniel C.W.} and Kwon, {Eilhann E.}",

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T1 - Carbon dioxide assisted thermal decomposition of cattle excreta

AU - Lee, Sang Ryong

AU - Lee, Jechan

AU - Lee, Taewoo

AU - Cho, Seong Heon

AU - Oh, Jeong Ik

AU - Kim, Hana

AU - Tsang, Daniel C.W.

AU - Kwon, Eilhann E.

PY - 2018/2/15

Y1 - 2018/2/15

N2 - To develop the environmentally benign thermo-chemical process, this study placed great emphasis on the influence of CO2on pyrolysis of cattle excreta for energy recovery. To this end, this study evaluates the possible enhanced energy recovery from cattle excreta using CO2as reaction medium/feedstock in the thermal degradation of cattle excreta. The enhanced generation of CO in the presence of CO2reached up to 15.15 mol% (reference value: 0.369 mol%) at 690 °C, which was equivalent to ~ 4000 times more generation of CO. In addition to the enhanced generation of CO, the enhanced generation of H2and CH4in the thermal degradation of cattle excreta in CO2. Thus, the findings of this study revealed two genuine roles of CO2: 1) enhanced thermal cracking of volatile organic carbons (VOCs) evolved from the thermal degradation of cattle excreta and 2) direct reaction between VOCs and CO2via gas phase reaction.

AB - To develop the environmentally benign thermo-chemical process, this study placed great emphasis on the influence of CO2on pyrolysis of cattle excreta for energy recovery. To this end, this study evaluates the possible enhanced energy recovery from cattle excreta using CO2as reaction medium/feedstock in the thermal degradation of cattle excreta. The enhanced generation of CO in the presence of CO2reached up to 15.15 mol% (reference value: 0.369 mol%) at 690 °C, which was equivalent to ~ 4000 times more generation of CO. In addition to the enhanced generation of CO, the enhanced generation of H2and CH4in the thermal degradation of cattle excreta in CO2. Thus, the findings of this study revealed two genuine roles of CO2: 1) enhanced thermal cracking of volatile organic carbons (VOCs) evolved from the thermal degradation of cattle excreta and 2) direct reaction between VOCs and CO2via gas phase reaction.

KW - Cattle excreta

KW - CO utilization 2

KW - Pyrolysis

KW - Waste-to-energy

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DO - 10.1016/j.scitotenv.2017.09.201

M3 - Journal article

SN - 0048-9697

VL - 615

SP - 70

EP - 77

JO - Science of the Total Environment

JF - Science of the Total Environment

ER -

Carbon dioxide assisted thermal decomposition of cattle excreta

Abstract

Keywords

ASJC Scopus subject areas

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