Thermodynamic features of dioxins' adsorption
Marina Prisciandaro1, Vincenzo Piemonte2, Giuseppe Mazziotti di Celso3
1Department of Industrial and Information Engineering and of Economics, University of L'Aquila, Viale Giovanni Gronchi 18, L'Aquila 67100, Italy.
Journal of Hazardous Materials
|November 22, 2016
Summary
This study models the adsorption of six toxic dioxin species using Langmuir
Area of Science:
- Environmental Chemistry
- Chemical Engineering
- Thermodynamics
Background:
- Dioxins are highly toxic environmental pollutants.
- Understanding dioxin adsorption is crucial for developing effective removal strategies.
Purpose of the Study:
- To develop P-T diagrams for six toxic dioxin congeners.
- To theoretically calculate adsorption isotherms using the Langmuir model.
- To provide a thermodynamic basis for dioxin removal process design.
Main Methods:
- Development of Pressure-Temperature (P-T) diagrams for six dioxin species.
- Calculation of theoretical adsorption isotherms via the Langmuir model.
- Validation of Langmuir isotherm parameters (K and wmax) through adsorption heat estimation (ΔHads).
Main Results:
- P-T diagrams were successfully developed for the target dioxin species.
- Theoretical adsorption isotherms were calculated, with parameters validated against literature.
- Estimated adsorption heat (ΔHads) ranged from 20-24 kJ/mol, aligning with existing data.
Conclusions:
- The study provides a validated thermodynamic framework for dioxin adsorption.
- Results support the rational design of processes for dioxin removal.
- This research contributes to mitigating dioxin contamination.
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