title: Combustion of a Pb(II)-loaded olive tree pruning used as biosorbent.
abstract: The olive tree pruning is a specific agroindustrial waste that can be successfully used as adsorbent, to remove Pb(II) from contaminated wastewater. Its final incineration has been studied in a thermobalance and in a laboratory flow reactor. The study aims at evaluating the fate of Pb during combustion, at two different scales of investigation. The flow reactor can treat samples approximately 10(2) larger than the conventional TGA. A detailed characterization of the raw and Pb(II)-loaded waste, before and after combustion is presented, including analysis of gas and solids products. The Pb(II)-loaded olive tree pruning has been prepared by a previous biosorption step in a lead solution, reaching a concentration of lead of 2.3 wt%. Several characterizations of the ashes and the mass balances proved that after the combustion, all the lead presents in the waste remained in ashes. Combustion in a flow reactor produced results consistent with those obtained in the thermobalance. It is thus confirmed that the combustion of Pb(II)-loaded olive tree pruning is a viable option to use it after the biosorption process. The Pb contained in the solid remained in the ashes, preventing possible environmental hazards.
authors: Department of Chemical Engineering, University of Granada, 18071 Granada, Spain. Electronic address: alirg@ugr.es.
authors: A
authors: A
authors: Ronda
authors: Department of Industrial Engineering, University of Padua, 35131 Padova, Italy.
authors: M
authors: M
authors: Della Zassa
authors: Department of Chemical Engineering, University of Granada, 18071 Granada, Spain.
authors: M A
authors: MA
authors: Martín-Lara
authors: Department of Chemical Engineering, University of Granada, 18071 Granada, Spain.
authors: M
authors: M
authors: Calero
authors: Department of Industrial Engineering, University of Padua, 35131 Padova, Italy.
authors: P
authors: P
authors: Canu
mesh_terms: D000327:Adsorption; D000383:Agriculture; D017745:Incineration; D007854:Lead / Q000737:chemistry*; D031658:Olea; D014866:Waste Products / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000737:chemistry*
chemical_list: D014866:Waste Products; D014874:Water Pollutants, Chemical; D007854:Lead
keywords: Biomass combustion; Biosorbent; Lead contamination; Olive tree pruning; Thermogravimetry