Thermal pyrolysis characteristics of polymer flocculated waste activated sludge

C. P. Chu; D. J. Lee; C. Y. Chang

doi:10.1016/S0043-1354(00)00235-9

Thermal pyrolysis characteristics of polymer flocculated waste activated sludge

C. P. Chu, D. J. Lee, C. Y. Chang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

26 Citations (Scopus)

Abstract

Polyelectrolyte conditioning is a common practice in wastewater management. This paper experimentally elucidated the thermal pyrolysis characteristics of waste activated sludge at a temperature range of 300-900 K (27-627 °C) using thermogravimetric analysis (TGA) in inert atmosphere, with especial attention on the effect of polyelectrolyte flocculation (using cationic polyacrylamide). On the pyrolysis rate vs temperature plot two maxima were noted. At the heating rate of 8 °C/min, polyelectrolyte does not influence the pyrolysis process. As higher heating rates (14 and 20 °C/min), on the other hand, flocculation to charge neutralization point would enhance the rate of thermal pyrolysis. A simple two parallel-reaction kinetic model is applied to interpret the experimental data. Possible roles of flocculant on sludge pyrolysis are discussed on the basis of change in sludge structures and the hindrance of surface reactions of sludge particles.

Original language	English
Pages (from-to)	49-56
Journal	Water Research
Volume	35
Issue number	1
DOIs	https://doi.org/10.1016/S0043-1354(00)00235-9
Publication status	Published - 2001
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

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

SDG 6 Clean Water and Sanitation

Research Keywords

Conditioning
Model
Pyrolysis
Sludge

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title = "Thermal pyrolysis characteristics of polymer flocculated waste activated sludge",

abstract = "Polyelectrolyte conditioning is a common practice in wastewater management. This paper experimentally elucidated the thermal pyrolysis characteristics of waste activated sludge at a temperature range of 300-900 K (27-627 °C) using thermogravimetric analysis (TGA) in inert atmosphere, with especial attention on the effect of polyelectrolyte flocculation (using cationic polyacrylamide). On the pyrolysis rate vs temperature plot two maxima were noted. At the heating rate of 8 °C/min, polyelectrolyte does not influence the pyrolysis process. As higher heating rates (14 and 20 °C/min), on the other hand, flocculation to charge neutralization point would enhance the rate of thermal pyrolysis. A simple two parallel-reaction kinetic model is applied to interpret the experimental data. Possible roles of flocculant on sludge pyrolysis are discussed on the basis of change in sludge structures and the hindrance of surface reactions of sludge particles.",

keywords = "Conditioning, Model, Pyrolysis, Sludge",

author = "Chu, {C. P.} and Lee, {D. J.} and Chang, {C. Y.}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected]. ",

year = "2001",

doi = "10.1016/S0043-1354(00)00235-9",

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pages = "49--56",

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T1 - Thermal pyrolysis characteristics of polymer flocculated waste activated sludge

AU - Chu, C. P.

AU - Lee, D. J.

AU - Chang, C. Y.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2001

Y1 - 2001

N2 - Polyelectrolyte conditioning is a common practice in wastewater management. This paper experimentally elucidated the thermal pyrolysis characteristics of waste activated sludge at a temperature range of 300-900 K (27-627 °C) using thermogravimetric analysis (TGA) in inert atmosphere, with especial attention on the effect of polyelectrolyte flocculation (using cationic polyacrylamide). On the pyrolysis rate vs temperature plot two maxima were noted. At the heating rate of 8 °C/min, polyelectrolyte does not influence the pyrolysis process. As higher heating rates (14 and 20 °C/min), on the other hand, flocculation to charge neutralization point would enhance the rate of thermal pyrolysis. A simple two parallel-reaction kinetic model is applied to interpret the experimental data. Possible roles of flocculant on sludge pyrolysis are discussed on the basis of change in sludge structures and the hindrance of surface reactions of sludge particles.

AB - Polyelectrolyte conditioning is a common practice in wastewater management. This paper experimentally elucidated the thermal pyrolysis characteristics of waste activated sludge at a temperature range of 300-900 K (27-627 °C) using thermogravimetric analysis (TGA) in inert atmosphere, with especial attention on the effect of polyelectrolyte flocculation (using cationic polyacrylamide). On the pyrolysis rate vs temperature plot two maxima were noted. At the heating rate of 8 °C/min, polyelectrolyte does not influence the pyrolysis process. As higher heating rates (14 and 20 °C/min), on the other hand, flocculation to charge neutralization point would enhance the rate of thermal pyrolysis. A simple two parallel-reaction kinetic model is applied to interpret the experimental data. Possible roles of flocculant on sludge pyrolysis are discussed on the basis of change in sludge structures and the hindrance of surface reactions of sludge particles.

KW - Conditioning

KW - Model

KW - Pyrolysis

KW - Sludge

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U2 - 10.1016/S0043-1354(00)00235-9

DO - 10.1016/S0043-1354(00)00235-9

M3 - RGC 21 - Publication in refereed journal

C2 - 11257893

SN - 0043-1354

VL - 35

SP - 49

EP - 56

JO - Water Research

JF - Water Research

IS - 1

ER -

Thermal pyrolysis characteristics of polymer flocculated waste activated sludge

Abstract

Bibliographical note

UN SDGs

Research Keywords

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