Thermochemical behaviour of chlorine-containing material in biosludge during analytical pyrolysis

Pia Oesch, Raimo Alen, Eero Leppämäki

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Thermochemical behaviour of the air-dried solid matter of two different waste materials (activated sludge and a mixture of biosludge and bark) from a kraft pulp mill was investigated in the temperature range 250-650°C during analytical pyrolysis. No significant differences in the pyrolytic properties of these materials were found, the primary mass loss occurring at 350-500°C. In both cases, at 450°C, all organically bound chlorine (70-80% of the total chlorine) in the original feedstocks was released, mainly in the form of hydrogen chloride. Results indicated that pyrolysis prior to combustion of biosludge is one attractive way of releasing organically bound chlorine and reducing the possibility of forming environmentally harmful chlorinated compounds.
Original languageEnglish
Pages (from-to)J131-J134
Number of pages4
JournalJournal of Pulp and Paper Science
Volume22
Issue number4
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed

Fingerprint

Chlorine
Pyrolysis
Hydrochloric Acid
Kraft pulp
Paper and pulp mills
Feedstocks
Hydrogen
Air
Temperature

Cite this

Oesch, Pia ; Alen, Raimo ; Leppämäki, Eero. / Thermochemical behaviour of chlorine-containing material in biosludge during analytical pyrolysis. In: Journal of Pulp and Paper Science. 1996 ; Vol. 22, No. 4. pp. J131-J134.
@article{ebf5fc045c334710b80c20b3a9d7b181,
title = "Thermochemical behaviour of chlorine-containing material in biosludge during analytical pyrolysis",
abstract = "Thermochemical behaviour of the air-dried solid matter of two different waste materials (activated sludge and a mixture of biosludge and bark) from a kraft pulp mill was investigated in the temperature range 250-650°C during analytical pyrolysis. No significant differences in the pyrolytic properties of these materials were found, the primary mass loss occurring at 350-500°C. In both cases, at 450°C, all organically bound chlorine (70-80{\%} of the total chlorine) in the original feedstocks was released, mainly in the form of hydrogen chloride. Results indicated that pyrolysis prior to combustion of biosludge is one attractive way of releasing organically bound chlorine and reducing the possibility of forming environmentally harmful chlorinated compounds.",
author = "Pia Oesch and Raimo Alen and Eero Lepp{\"a}m{\"a}ki",
year = "1996",
language = "English",
volume = "22",
pages = "J131--J134",
journal = "J-FOR: Journal of Science & Technology for Forest Products and Processes",
issn = "1927-6311",
number = "4",

}

Thermochemical behaviour of chlorine-containing material in biosludge during analytical pyrolysis. / Oesch, Pia; Alen, Raimo; Leppämäki, Eero.

In: Journal of Pulp and Paper Science, Vol. 22, No. 4, 1996, p. J131-J134.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Thermochemical behaviour of chlorine-containing material in biosludge during analytical pyrolysis

AU - Oesch, Pia

AU - Alen, Raimo

AU - Leppämäki, Eero

PY - 1996

Y1 - 1996

N2 - Thermochemical behaviour of the air-dried solid matter of two different waste materials (activated sludge and a mixture of biosludge and bark) from a kraft pulp mill was investigated in the temperature range 250-650°C during analytical pyrolysis. No significant differences in the pyrolytic properties of these materials were found, the primary mass loss occurring at 350-500°C. In both cases, at 450°C, all organically bound chlorine (70-80% of the total chlorine) in the original feedstocks was released, mainly in the form of hydrogen chloride. Results indicated that pyrolysis prior to combustion of biosludge is one attractive way of releasing organically bound chlorine and reducing the possibility of forming environmentally harmful chlorinated compounds.

AB - Thermochemical behaviour of the air-dried solid matter of two different waste materials (activated sludge and a mixture of biosludge and bark) from a kraft pulp mill was investigated in the temperature range 250-650°C during analytical pyrolysis. No significant differences in the pyrolytic properties of these materials were found, the primary mass loss occurring at 350-500°C. In both cases, at 450°C, all organically bound chlorine (70-80% of the total chlorine) in the original feedstocks was released, mainly in the form of hydrogen chloride. Results indicated that pyrolysis prior to combustion of biosludge is one attractive way of releasing organically bound chlorine and reducing the possibility of forming environmentally harmful chlorinated compounds.

M3 - Article

VL - 22

SP - J131-J134

JO - J-FOR: Journal of Science & Technology for Forest Products and Processes

JF - J-FOR: Journal of Science & Technology for Forest Products and Processes

SN - 1927-6311

IS - 4

ER -