108363 20230519145416.0 doi 10.1016/j.jaap.2021.105337 sideral 125014 ART-2021-125014 eng Greco, Gianluca Universidad de Zaragoza (orcid)0000-0001-6609-1601 Importance of pyrolysis temperature and pressure in the concentration of polycyclic aromatic hydrocarbons in wood waste-derived biochars 2021 Access copy available to the general public Unrestricted Biochar addition to soil can lead to potential environmental risks due to its content of polycyclic aromatic hydrocarbons (PAHs). Until now, previous research focused on assessing the influence of pyrolysis peak temperature and feedstock on the formation and evolution of PAHs. Nevertheless, the effects of other important process parameters —such as pressure, gas residence time, and type of carrier gas— have not been comprehensively explored. To fill this gap, a 2-level full factorial design of experiments was conducted to assess the influence of the above-mentioned parameters on the pyrolysis behavior of an untreated wood waste as well as the properties of resulting biochars, including their PAHs contents. Results showed that the highest production of PAHs was reached at lower peak temperatures, whereas an increase in temperature led to a substantial reduction of the final PAHs content. An increased pressure also resulted in a marked decrease in PAHs, probably as a consequence of the higher carrier gas flow rates used under pressurized conditions, which could inhibit the generation of PAHs by condensation and polymerization. The outstanding results obtained from the phytotoxicity assessment for three plant species (barley, watercress, and basil) suggest that PAHs were not the major responsible for the observed short-term phytotoxic effects of biochars, since a considerable part of the phytotoxic compounds in biochar can be removed by a simple water washing step. info:eu-repo/grantAgreement/ES/DGA-ERDF/E37-20R info:eu-repo/grantAgreement/ES/DGA-FEDER/T22-20R info:eu-repo/grantAgreement/EC/H2020/721991/EU/Advanced Carbon Materials from Biowaste: Sustainable Pathways to Drive Innovative Green Technologies/ GreenCarbon This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 721991- GreenCarbon info:eu-repo/grantAgreement/ES/MCIU/RTI2018-093431-B-I00 info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 6.437 2021 CHEMISTRY, ANALYTICAL 12 / 87 = 0.138 2021 Q1 T1 ENGINEERING, CHEMICAL 27 / 143 = 0.189 2021 Q1 T1 ENERGY & FUELS 44 / 119 = 0.37 2021 Q2 T2 1.11 2021 Fuel Technology 2021 Q1 Analytical Chemistry 2021 Q1 9.1 2021 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Videgain, María Universidad de Zaragoza (orcid)0000-0002-3630-7931 Di Stasi, Christian Universidad de Zaragoza (orcid)0000-0001-5266-398X Pires, Elisabet Universidad de Zaragoza (orcid)0000-0002-2676-8814 Manyà, Joan J. Universidad de Zaragoza (orcid)0000-0002-0118-3254 5005 555 Universidad de Zaragoza Dpto. Ing.Quím.Tecnol.Med.Amb. Área Ingeniería Química 2013 765 Universidad de Zaragoza Dpto. Química Orgánica Área Química Orgánica 5011 705 Universidad de Zaragoza Dpto. CC.Agrar.y Medio Natural Área Producción Vegetal 159 (2021), 105337 [11 pp.] J. anal. appl. pyrolysis JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS 0165-2370 847966 http://zaguan.unizar.es/record/108363/files/texto_completo.pdf Versión publicada 2689601 http://zaguan.unizar.es/record/108363/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:108363 articulos driver 2023-05-18-14:00:50 ARTICLE