Thermodynamic features of dioxins' adsorption

Marina Prisciandaro; Vincenzo Piemonte; Giuseppe Mazziotti di Celso; Silvia Ronconi; Mauro Capocelli

doi:10.1016/j.jhazmat.2016.11.038

Thermodynamic features of dioxins' adsorption

J Hazard Mater. 2017 Feb 15;324(Pt B):645-652. doi: 10.1016/j.jhazmat.2016.11.038. Epub 2016 Nov 14.

Authors

Marina Prisciandaro¹, Vincenzo Piemonte², Giuseppe Mazziotti di Celso³, Silvia Ronconi⁴, Mauro Capocelli⁵

Affiliations

¹ Department of Industrial and Information Engineering and of Economics, University of L'Aquila, Viale Giovanni Gronchi 18, L'Aquila 67100, Italy.
² Faculty of Engineering, University Campus Biomedico of Rome, Via Alvaro del Portillo 21, Rome 00128, Italy. Electronic address: v.piemonte@unicampus.it.
³ Faculty of Bioscience, University of Teramo, Via R. Balzarini, 1, 64100 Teramo, Italy.
⁴ Arta Abruzzo, Department of L'Aquila, Bazzano (AQ), 67100 L'Aquila, Italy.
⁵ Faculty of Engineering, University Campus Biomedico of Rome, Via Alvaro del Portillo 21, Rome 00128, Italy.

PMID: 27866764
DOI: 10.1016/j.jhazmat.2016.11.038

Abstract

In this paper, the six more poisonous species among all congeners of dioxin group are taken into account, and the P-T diagram for each of them is developed. Starting from the knowledge of vapour tensions and thermodynamic parameters, the theoretical adsorption isotherms are calculated according to the Langmuir's model. In particular, the Langmuir isotherm parameters (K and w_max) have been validated through the estimation of the adsorption heat (ΔH_ads), which varies in the range 20-24kJ/mol, in agreement with literature values. This result will allow to put the thermodynamical basis for a rational design of different process units devoted to dioxins removal.

Keywords: Adsorption isotherm; Dioxins; State diagram; Thermodynamic modeling.