title: Pyrolysis wastewater treatment by adsorption on biochars produced by poplar biomass.
abstract: Pyrolysis is a widely studied thermochemical process, however the disposal of the produced byproducts is an unexplored field. In particular, the acqueous phase, characterized by a high organic load (TOC), must be necessarily treated. Aims of this work is to study the potentiality of biochar as adsorbent material for the treatment of this wastewater. For this aim, pyrolysis wastewater and biochar produced in the same plant were used. Two biochars produced at different temperatures (550 and 750 °C) and an activated biochar produced by chemical activation with NaOH of the raw biomass were tested. The study shows that higher temperature in the biochar production leads to higher sorption capacity of the organic compounds due to an increase of the surface area. The activation process further increases the surface area of the biochar that becomes similar to that of a commercial activated carbon while the sorption capacity exceeds that of commercial activated carbon of 2.5 times.
authors.affiliation: Department of Chemical Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy. Electronic address: benedetta.decaprariis@uniroma1.it.
authors.forename: Benedetta
authors.initials: B
authors.lastname: de Caprariis
authors.affiliation: Department of Chemical Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: De Filippis
authors.affiliation: Department of Chemical Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy.
authors.forename: A David
authors.initials: AD
authors.lastname: Hernandez
authors.affiliation: Department of Chemical Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy.
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Petrucci
authors.affiliation: Department of Chemical Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy.
authors.forename: Antonietta
authors.initials: A
authors.lastname: Petrullo
authors.affiliation: Department of Chemical Engineering, Sapienza University of Rome, Via Eudossiana 18, Rome, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Scarsella
authors.affiliation: Department of Chemical and Process Engineering, University of Surrey, Guildford GU2 7XH, UK.
authors.forename: Mattia
authors.initials: M
authors.lastname: Turchi
mesh_terms: D000327:Adsorption; D018533:Biomass; D002606:Charcoal; D032107:Populus; D062065:Wastewater
chemical_list: D002606:Charcoal; D062065:Wastewater; C540010:biochar
keywords: Adsorption; Biochar; Biochar activation; Pyrolysis water; Water remediation