The influence of hygienisation of sewage sludge on the process of pyrolysis

• Authors: Adéla Čížková , Dagmar Juchelková , Helena Raclavská
• Languages of publication: EN

Abstracts

EN

The aim of this work was to determine the influence of liming on the process of pyrolysis. Three samples of sludge from two wastewater treatment plants were selected for this study on pyrolysis: sludge without liming and limed sludge from the Central Wastewater Treatment Plant in Ostrava and sludge from the Wastewater Treatment Plant in Sviadnov. The samples had different content of calcite (CaCO3). The limed sludge contained 7% of CaCO3, sludge without liming 3.8% and sludge without liming from WWTP Sviadnov contained 0.5% of calcite. The results of laboratory pyrolysis proved that limed sludge released the maximum amount of carbon - 55.46 %, while sludge without liming from WWTP Sviadnov released only 48.92%. Calcite produces during its decomposition CaO and the product influences the pyrolysis process because it supports cracking of volatile organic compounds

Keywords

EN

pyrolysis; sewage sludge; pyrolytic gas; lime

• Publisher: De Gruyter Open
• Journal: Chemical and Process Engineering
• Year: 2011
• Volume: 32
• Issue: 1
• Pages: 57-68

Dates

published

1 - 3 - 2011

online

5 - 4 - 2011

Contributors

author

Adéla Čížková

• Faculty of Mining and Geology, Institute of Environmental Engineering, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava - Poruba, Czech Republic

author

Dagmar Juchelková

• Faculty of Mechanical Engineering, Department of Energy Engineering, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava - Poruba, Czech Republic

author

Helena Raclavská

• Faculty of Mining and Geology, Institute of Geological Engineering, VŠB - Technical University of Ostrava, 17. listopadu 15/2172, 708 33 Ostrava - Poruba, Czech Republic

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Identifiers

DOI

10.2478/v10176-011-0005-7