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Research Papers

Burning Characteristics and the Fuel Properties of the Dry-Carbonization Chars of Sewage Sludge

[+] Author and Article Information
H. Haykiri-Acma

Chemical and Metallurgical Engineering Faculty,
Chemical Engineering Department,
Istanbul Technical University,
Maslak 34469, Istanbul, Turkey

S. Yaman

Chemical and Metallurgical Engineering Faculty,
Chemical Engineering Department,
Istanbul Technical University,
Maslak 34469, Istanbul, Turkey
e-mail: yamans@itu.edu.tr

1Corresponding author.

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received August 16, 2018; final manuscript received October 3, 2018; published online December 6, 2018. Assoc. Editor: Matthew Oehlschlaeger.

J. Thermal Sci. Eng. Appl 11(2), 021016 (Dec 06, 2018) (7 pages) Paper No: TSEA-18-1404; doi: 10.1115/1.4041684 History: Received August 16, 2018; Revised October 03, 2018

As an alternative treatment to hydrothermal carbonization, sewage sludge (SS) was subjected to dry carbonization at temperatures of 200–700 °C to produce pyrochar. The fuel properties of the obtained chars were characterized, and their combustibility was checked by thermal analysis method. The combustibility of the chars was evaluated considering the criteria such as the ignition index (Ci), burnout index (Cb), comprehensive combustibility index (S), and the burning stability index (DW). Although even low temperature treatments such as 200 °C and 300 °C did not improve the calorific value, some improvements took place in the combustion characteristics upon treatment.

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Figures

Grahic Jump Location
Fig. 1

Experimental procedure

Grahic Jump Location
Fig. 2

Fourier transform infrared spectra of SS and C700

Grahic Jump Location
Fig. 3

X-ray diffractometer spectra for ashes of SS and C700

Tables

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