Abstract

Gasification represents a viable solution for the treatment of biomass aiming at producing asyngas with an overall conversion efficiency reaching the 75% level. Apart the syngas, the processproduces solid residuals (ashes and unburned carbon-char) as well as heavy hydrocarbons (tars)that must be separated from the main gas flow. Here we present the outcomes of a gasificationtreatment conducted on poplar biomass samples collected from a multi contaminated area ofSouthern Italy restored by plant assisted bioremediation (PABR) aiming at reducing heavy metal(HM) and PCB contents in the contaminated soil. Pruning residues were collected from the poplartreated area located close to Taranto city. HM and PCB analyses were carried out to evaluate theoverall content of these contaminants in the biomass. This preliminary evaluation is necessary forassessing the quality of the biomass and estimating the ensuing pollution in comparison with noncontaminatedbiomass. In fact, at the moment, the PABR residuals are classified by the Italianlegislation as wastes and not as biomass usable for energy purposes when they are produced incontaminated areas. Our aim is to indicate the specific additional treatments possibly requiredfor trapping HMs and PCBs in ashes, thus demonstrating that the PABR biomass gasification isnot more pollutant than non-contaminated biomass.The gasification process was carried out in a lab-scale gasifier system, designed at the Faculty ofCivil and Industrial Engineering at Sapienza University of Rome. Moreover, we investigated thecatalytic effect (and its related impact) associated to the presence of HMs in the biomass as wellas the distribution of the HMs and PCBs among the ashes, filters and tars.

Autore Pugliese

• Ancona Valeria , Uricchio Vito Felice

Tutti gli autori

• Ancona V.; Barra Caracciolo A.; Borello D.; Campanale C.; De Caprariis B.; Grenni P.; Basile A.; Uricchio V.F.

Titolo volume/Rivista

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Anno di pubblicazione

2018

ISSN

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ISBN

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Numero di citazioni Wos

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Settori ERC

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Codici ASJC

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