TY - JOUR N2 - 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 L1 - http://www.journals.pan.pl/Content/84586/PDF/06_paper-Cizkova.pdf L2 - http://www.journals.pan.pl/Content/84586 PY - 2011 IS - No 1 March EP - 68 DO - 10.2478/v10176-011-0005-7 KW - pyrolysis KW - sewage sludge KW - pyrolytic gas KW - lime A1 - Čížková, Adéla A1 - Juchelková, Dagmar A1 - Raclavská, Helena PB - Polish Academy of Sciences Committee of Chemical and Process Engineering DA - 2011 T1 - The influence of hygienisation of sewage sludge on the process of pyrolysis SP - 57 UR - http://www.journals.pan.pl/dlibra/publication/edition/84586 T2 - Chemical and Process Engineering ER -