Measures to prevent emissions of PCDDS/DFs and co-planar PCBs from crematories in Japan

Nobuo Takeda; Masaki Takaoka; Takeshi Fujiwara; Hisayuki Takeyama; Shoji Eguchi

doi:10.1016/S0045-6535(00)00431-8

Measures to prevent emissions of PCDDS/DFs and co-planar PCBs from crematories in Japan

Nobuo Takeda, Masaki Takaoka, Takeshi Fujiwara, Hisayuki Takeyama, Shoji Eguchi

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

12 Citations (Scopus)

Abstract

In this study, PCDDs/DFs and co-planar PCBs concentrations in flue gases from 17 crematories and in fly ashes and bottom ashes (mainly bone) from several crematories were measured to grasp the present state of PCDDs/DFs emissions from crematories. The effects of several factors were discussed to prevent PCDDs/DFs emissions from crematories. Total concentration (normalized by 12% O₂) of PCDDs/DFs was ranged from 4.9 to 1200 ng/m³ N, and toxic equivalent concentration was ranged from 0.064 to 24 ng TEQ/m³ N. As the results obtained in this research, the following measures to reduce PCDDs/DFs emission are recommended for existing crematories: (1) keeping the temperature at 800°C in main/secondary chambers during a whole cremation, and (2) lowering the temperature in the dust collector. For newly installed crematories, following measures to prevent PCDDs/DFs emission including the measures for existing ones are recommended: (1) connecting one secondary chamber to one main chamber, (2) installing the high efficiency dust collector and reducing dust concentration to less than 0.01 g/m³ N, and (3) installing the sampling point for monitoring of PCDDs/DFs.

Original language	English
Pages (from-to)	763-771
Number of pages	9
Journal	Chemosphere
Volume	43
Issue number	4-7
DOIs	https://doi.org/10.1016/S0045-6535(00)00431-8
Publication status	Published - 2001
Externally published	Yes

Keywords

Co-planar PCBs
Crematory
Emission control
PCDDs/DFs

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
Chemistry(all)
Pollution
Health, Toxicology and Mutagenesis

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title = "Measures to prevent emissions of PCDDS/DFs and co-planar PCBs from crematories in Japan",

abstract = "In this study, PCDDs/DFs and co-planar PCBs concentrations in flue gases from 17 crematories and in fly ashes and bottom ashes (mainly bone) from several crematories were measured to grasp the present state of PCDDs/DFs emissions from crematories. The effects of several factors were discussed to prevent PCDDs/DFs emissions from crematories. Total concentration (normalized by 12% O2) of PCDDs/DFs was ranged from 4.9 to 1200 ng/m3 N, and toxic equivalent concentration was ranged from 0.064 to 24 ng TEQ/m3 N. As the results obtained in this research, the following measures to reduce PCDDs/DFs emission are recommended for existing crematories: (1) keeping the temperature at 800°C in main/secondary chambers during a whole cremation, and (2) lowering the temperature in the dust collector. For newly installed crematories, following measures to prevent PCDDs/DFs emission including the measures for existing ones are recommended: (1) connecting one secondary chamber to one main chamber, (2) installing the high efficiency dust collector and reducing dust concentration to less than 0.01 g/m3 N, and (3) installing the sampling point for monitoring of PCDDs/DFs.",

keywords = "Co-planar PCBs, Crematory, Emission control, PCDDs/DFs",

author = "Nobuo Takeda and Masaki Takaoka and Takeshi Fujiwara and Hisayuki Takeyama and Shoji Eguchi",

year = "2001",

doi = "10.1016/S0045-6535(00)00431-8",

language = "English",

volume = "43",

pages = "763--771",

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T1 - Measures to prevent emissions of PCDDS/DFs and co-planar PCBs from crematories in Japan

AU - Takeda, Nobuo

AU - Takaoka, Masaki

AU - Fujiwara, Takeshi

AU - Takeyama, Hisayuki

AU - Eguchi, Shoji

PY - 2001

Y1 - 2001

N2 - In this study, PCDDs/DFs and co-planar PCBs concentrations in flue gases from 17 crematories and in fly ashes and bottom ashes (mainly bone) from several crematories were measured to grasp the present state of PCDDs/DFs emissions from crematories. The effects of several factors were discussed to prevent PCDDs/DFs emissions from crematories. Total concentration (normalized by 12% O2) of PCDDs/DFs was ranged from 4.9 to 1200 ng/m3 N, and toxic equivalent concentration was ranged from 0.064 to 24 ng TEQ/m3 N. As the results obtained in this research, the following measures to reduce PCDDs/DFs emission are recommended for existing crematories: (1) keeping the temperature at 800°C in main/secondary chambers during a whole cremation, and (2) lowering the temperature in the dust collector. For newly installed crematories, following measures to prevent PCDDs/DFs emission including the measures for existing ones are recommended: (1) connecting one secondary chamber to one main chamber, (2) installing the high efficiency dust collector and reducing dust concentration to less than 0.01 g/m3 N, and (3) installing the sampling point for monitoring of PCDDs/DFs.

AB - In this study, PCDDs/DFs and co-planar PCBs concentrations in flue gases from 17 crematories and in fly ashes and bottom ashes (mainly bone) from several crematories were measured to grasp the present state of PCDDs/DFs emissions from crematories. The effects of several factors were discussed to prevent PCDDs/DFs emissions from crematories. Total concentration (normalized by 12% O2) of PCDDs/DFs was ranged from 4.9 to 1200 ng/m3 N, and toxic equivalent concentration was ranged from 0.064 to 24 ng TEQ/m3 N. As the results obtained in this research, the following measures to reduce PCDDs/DFs emission are recommended for existing crematories: (1) keeping the temperature at 800°C in main/secondary chambers during a whole cremation, and (2) lowering the temperature in the dust collector. For newly installed crematories, following measures to prevent PCDDs/DFs emission including the measures for existing ones are recommended: (1) connecting one secondary chamber to one main chamber, (2) installing the high efficiency dust collector and reducing dust concentration to less than 0.01 g/m3 N, and (3) installing the sampling point for monitoring of PCDDs/DFs.

KW - Co-planar PCBs

KW - Crematory

KW - Emission control

KW - PCDDs/DFs

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Measures to prevent emissions of PCDDS/DFs and co-planar PCBs from crematories in Japan

Abstract

Keywords

ASJC Scopus subject areas

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