Effects of calcium carbonate on pyrolysis of sewage sludge

Eilhann E. Kwon; Taewoo Lee; Yong Sik Ok; Daniel C.W. Tsang; Chanhyuk Park; Jechan Lee

doi:10.1016/j.energy.2018.04.100

Effects of calcium carbonate on pyrolysis of sewage sludge

Eilhann E. Kwon, Taewoo Lee, Yong Sik Ok, Daniel C.W. Tsang, Chanhyuk Park, Jechan Lee

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

139 Citations (Scopus)

Abstract

This study demonstrates that calcium carbonate (CaCO₃) allows not only enhancement of the production of CO as syngas, but also reduction of the content of polycyclic aromatic hydrocarbons (PAHs) in the pyrolytic products from sewage sludge. CO₂ was formed by the decomposition of CaCO₃ in pyrolysis. The CO₂ derived from CaCO₃ enhanced thermal cracking of volatile organic carbons (VOCs) generated during the pyrolysis of sewage sludge and provided an additional source of C and O, likely enhancing the production of CO at >650 °C. In addition, more solid product was converted into gaseous and liquid products by the addition of CaCO₃ in the pyrolysis of sewage sludge. This work suggests that CaCO₃ can be used as an inexpensive source of CO₂ that increases thermal efficiency of the pyrolysis process and reduces the evolution of harmful chemical species such as PAHs during thermal treatment of the byproduct during processing at municipal and industrial wastewater treatment facilities (i.e., sewage sludge).

Original language	English
Pages (from-to)	726-731
Number of pages	6
Journal	Energy
Volume	153
DOIs	https://doi.org/10.1016/j.energy.2018.04.100
Publication status	Published - 2018 Jun 15

Bibliographical note

Funding Information:
This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korean Government (the Ministry of Education) (No. NRF-2016R1D1A1B03933027 ).

Publisher Copyright:
© 2018 Elsevier Ltd

Keywords

CaCO
Pyrolysis
Sewage sludge
Thermal treatment
Waste-to-energy

ASJC Scopus subject areas

Mechanical Engineering
Pollution
Energy Engineering and Power Technology
General Energy
Electrical and Electronic Engineering
Management, Monitoring, Policy and Law
Industrial and Manufacturing Engineering
Building and Construction
Fuel Technology
Renewable Energy, Sustainability and the Environment
Civil and Structural Engineering
Modelling and Simulation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.energy.2018.04.100

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title = "Effects of calcium carbonate on pyrolysis of sewage sludge",

abstract = "This study demonstrates that calcium carbonate (CaCO3) allows not only enhancement of the production of CO as syngas, but also reduction of the content of polycyclic aromatic hydrocarbons (PAHs) in the pyrolytic products from sewage sludge. CO2 was formed by the decomposition of CaCO3 in pyrolysis. The CO2 derived from CaCO3 enhanced thermal cracking of volatile organic carbons (VOCs) generated during the pyrolysis of sewage sludge and provided an additional source of C and O, likely enhancing the production of CO at >650 °C. In addition, more solid product was converted into gaseous and liquid products by the addition of CaCO3 in the pyrolysis of sewage sludge. This work suggests that CaCO3 can be used as an inexpensive source of CO2 that increases thermal efficiency of the pyrolysis process and reduces the evolution of harmful chemical species such as PAHs during thermal treatment of the byproduct during processing at municipal and industrial wastewater treatment facilities (i.e., sewage sludge).",

keywords = "CaCO, Pyrolysis, Sewage sludge, Thermal treatment, Waste-to-energy",

author = "Kwon, {Eilhann E.} and Taewoo Lee and Ok, {Yong Sik} and Tsang, {Daniel C.W.} and Chanhyuk Park and Jechan Lee",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korean Government (the Ministry of Education) (No. NRF-2016R1D1A1B03933027 ). Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

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doi = "10.1016/j.energy.2018.04.100",

language = "English",

volume = "153",

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AU - Kwon, Eilhann E.

AU - Lee, Taewoo

AU - Ok, Yong Sik

AU - Tsang, Daniel C.W.

AU - Park, Chanhyuk

AU - Lee, Jechan

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korean Government (the Ministry of Education) (No. NRF-2016R1D1A1B03933027 ). Publisher Copyright: © 2018 Elsevier Ltd

PY - 2018/6/15

Y1 - 2018/6/15

N2 - This study demonstrates that calcium carbonate (CaCO3) allows not only enhancement of the production of CO as syngas, but also reduction of the content of polycyclic aromatic hydrocarbons (PAHs) in the pyrolytic products from sewage sludge. CO2 was formed by the decomposition of CaCO3 in pyrolysis. The CO2 derived from CaCO3 enhanced thermal cracking of volatile organic carbons (VOCs) generated during the pyrolysis of sewage sludge and provided an additional source of C and O, likely enhancing the production of CO at >650 °C. In addition, more solid product was converted into gaseous and liquid products by the addition of CaCO3 in the pyrolysis of sewage sludge. This work suggests that CaCO3 can be used as an inexpensive source of CO2 that increases thermal efficiency of the pyrolysis process and reduces the evolution of harmful chemical species such as PAHs during thermal treatment of the byproduct during processing at municipal and industrial wastewater treatment facilities (i.e., sewage sludge).

AB - This study demonstrates that calcium carbonate (CaCO3) allows not only enhancement of the production of CO as syngas, but also reduction of the content of polycyclic aromatic hydrocarbons (PAHs) in the pyrolytic products from sewage sludge. CO2 was formed by the decomposition of CaCO3 in pyrolysis. The CO2 derived from CaCO3 enhanced thermal cracking of volatile organic carbons (VOCs) generated during the pyrolysis of sewage sludge and provided an additional source of C and O, likely enhancing the production of CO at >650 °C. In addition, more solid product was converted into gaseous and liquid products by the addition of CaCO3 in the pyrolysis of sewage sludge. This work suggests that CaCO3 can be used as an inexpensive source of CO2 that increases thermal efficiency of the pyrolysis process and reduces the evolution of harmful chemical species such as PAHs during thermal treatment of the byproduct during processing at municipal and industrial wastewater treatment facilities (i.e., sewage sludge).

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KW - Sewage sludge

KW - Thermal treatment

KW - Waste-to-energy

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M3 - Article

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SN - 0360-5442

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JO - Energy

JF - Energy

ER -

Effects of calcium carbonate on pyrolysis of sewage sludge

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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