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Emissions of polycyclic aromatic hydrocarbons from fluidized and fixed bed incinerators disposing petrochemical industrial biological sludge

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Abstract.
This study investigated the emissions of polycyclic aromatic hydrocarbons (PAHs) from two fluidized
bed incinerators (FLBI A and FLBI B) and one fixed bed incinerator (FIBI) disposing biological sludge
generated from the petrochemical industries in Taiwan. The results of 21 individual PAHs (including
low (LM-PAHs), middle (MM-PAHs) and high molecular weight PAHs (HM-PAHs)) were reported. The
LM-PAHs mainly dominated the total-PAHs in the stack flue gases, whereas the LM- and HM-PAHs dominated
the total-PAHs in the bottom fly, fly ash and WSB effluent. Due to high carcinogenic potencies
(= total-BaPeq concentrations) in the bottom ash (195 ng g−1) andWSB effluent (20,600 ng L−1) of the FIBI,
cautious should be taken in treating them to avoid second contamination. Lower combustion efficiency
and elevated fuel/feedstock (F/W) ratio for the FIBI led to the highest total emission factor of total-PAHs
(38,400gkg−1). Lower total-PAH removal efficiencies of wet scrubber (WSB) (0.837–5.89%), cyclone
(0.109–0.255%) and electrostatic precipitator (ESP) (0.032%) than those reported elsewhere resulted in
high fraction in PAHcontributions fromthe stack flue gases. Lower total-PAHemission factorwas found for
FLBI A (2380 ugkg−1 biological sludge) with higher combustion efficiency compared to those for FLBI B
(11,500 ugkg−1) and FIBI (38,400 ugkg−1 biological sludge), implying that combustion efficiency plays a
vital role in PAH emissions.

Keywords:
Polycyclic aromatic hydrocarbon
Fluidized bed incinerator
Fixed bed incinerator
Carcinogenic potency
Removal efficiency

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Ketersediaan

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Informasi Detail

Judul Seri

Journal of Hazardous Materials

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Journal of Hazardous Materials 168 (2009) 438–444

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

LINGKUNGAN HIDUP

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

Versi lain/terkait

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