Properties of biochar produced by slow pyrolysis of stabilized sewage sludge

J. Moško, M. Pohořelý, S. Skoblia, Z. Beňo, J. Brynda, B. Zach, M. Šyc, Václavková, M. Jeremiáš, K. Svoboda

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Direct application of stabilized sewage sludge on agricultural soil is currently a big concern because of its significant content of detectable organic micropollutants. Proper sludge treatment should suppress its negative features and produce material suitable for soil amendment. Slow pyrolysis is one of such treatments. We studied the influence of pyrolysis temperature (400-800 °C) on material and energy balances and on elementary composition of the pyrolysis solid residue (biochar). Pyrolysis at higher temperatures resulted in lesser biochar yield and promoted gas yield. The macronutrient content of biochar increased with an increase in pyrolysis temperature (except for nitrogen).

Original languageEnglish
Title of host publication25th European Biomass Conference and Exhibition
Pages1340-1342
Number of pages3
DOIs
Publication statusPublished - Jun 2017
MoE publication typeA4 Article in a conference publication

Publication series

SeriesEuropean Biomass Conference and Exhibition Proceedings
Volume2017
ISSN2282-5819

Keywords

  • Batch reactor
  • Biochar
  • Energy balance
  • Mass balance
  • Pyrolysis
  • Sewage sludge

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