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research-article

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

[+] Author and Article Information
Hanzade Haykiri-Acma

Istanbul Technical University, Chemical and Metallurgical Engineering Faculty, Chemical Engineering Department, 34469 Maslak, Istanbul, Turkey
hanzade@itu.edu.tr

Serdar Yaman

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

1Corresponding author.

ASME doi:10.1115/1.4041684 History: Received August 16, 2018; Revised October 03, 2018

Abstract

As an alternative treatment to hydrothermal carbonization, sewage sludge (SS) was subjected to dry-carbonization (DC) 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 eavaluated 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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