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Phytotoxicity of sewage sludge biochars prepared at different pyrolysis conditions

AuthorsÁbrego, J.; Atienza-Martínez, M.; Gimeno, J. R.; Aibar Lete, Joaquín; Quílez Sáez de Viteri, Dolores CSIC ORCID; Gea, G.
sewage sludge
Issue Date2015
Citation23rd European Biomass Conference and Exhibition (Vienna, Austria. 1-4 June 2015)
AbstractPyrolysis of sewage sludge was carried out at three different lab-scale reactors and conditions: an Auger reactor for sewage sludge pyrolysis at low temperature (300ºC), a stirred batch reactor (530ºC) and a fluidised bed reactor (530ºC). The starting material is anaerobically digested and thermally dried sewage sludge from a wastewater treatment plant located in Spain. A preliminary study to assess the feasibility of application to soil of the three biochars was performed using two germination tests and a greenhouse experiment. Water soluble compounds from biochar did not affect seed germination, but volatile compounds reduced germination of more sensitive seeds. Biochar applied to soil at agricultural rates (20 t/ha) reduced growth and development of a corn crop. No differential effects of the three pyrolysis conditions were found.
Description6 Pags.- 8 Figs.- 3 Tabls. Creative Commons License Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0).
Appears in Collections:(EEAD) Comunicaciones congresos

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