1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
2. Όλο το Αποθετήριο
3. Ερευνητικές ομάδες

Τύπος:	Ανακοίνωση σε συνέδριο
Τίτλος:	Biochar particles derived from sawdust as novel 3D particles electrodes for micropollutants degradation
Συγγραφέας:	[EL] Μπάμπος, Γεώργιος[EN] Bampos, Georgios [EL] Πεταλά, Αθανασία[EN] Petala, Athanasia [EL] Φροντιστής, Ζαχαρίας[EN] Frontistis, Zacharias
Ημερομηνία:	15/08/2022
Περίληψη:	Advanced oxidation processes (AOPs) have attracted scientific community interest due to their effectiveness towards the complete degradation of water contaminants [1, 2]. Biochar materials derived from thermal treatment of biomass residues (rice, oil waste, conventional biological treatment sludge), under relatively moderate temperatures and usually in the absence of oxygen, are quite promising materials that can be used in a variety of environmental applications, such as absorption of organic or inorganic pollutants, improvement of soil quality or carbon sequestration [3, 4]. The present work concerns the development of an innovative hybrid electrochemical process employing biochar particles derived from sawdust cracking (550 – 850 oC) as three-dimensional (3D) electrodes to be applied for micropollutants removal [5]. Biochar materials were physicochemically characterized employing physisorption of N2 to calculate the specific surface area (BET method), X-ray diffraction (XRD) to identify the structural characteristics and scanning electron microscopy (SEM)/electron dispersive spectroscopy (EDS) to determine surface morphology and elemental composition. The experimental apparatus used in the electrochemical measurements consisted of a commercial Boron-doped diamond (BDD) anode electrode and a graphite cathode electrode, both with a surface area equal to 8 cm2. The electrochemical reactor was a plexiglass cell operating under atmospheric conditions and under constant stirring. The cell was filled with 0.1 M Na2SO4 electrolyte solution containing 0.5 mg/L of each examined micropollutant. Experimental measurements were performed applying a current density of 8 mA cm-2, with varying pH values, aqueous matrices and biochar particles loading in the solution. The biochar sample derived after calcination at 650 oC exhibited increased efficiency concerning sulfamethoxazole (SMX) removal compared to that exhibited by a combination of 2D electrochemical systems and sorption. The synergy index was calculated equal to 74.5% under optimal operating conditions. SMX removal was favored by increasing the biochar particles loading in the electrolyte solution. The electrochemical system maintained its activity in the pH range 3 – 10. Moreover, the proposed electrochemical system using sawdust derived biochar particles as 3D electrodes exhibits remarkable performance towards degradation of various other micropollutants, such as Bisphenol A (BPA), Propylparaben (PP), and Piroxicam (PR). No significant reduction was observed as it concerns the degradation of micropollutants when applying complex and real water matrices. In addition, the proposed hybrid electrochemical process maintained its efficiency concerning SMX removal after five consecutive experiments.
Γλώσσα:	Αγγλικά
Τόπος δημοσίευσης:	Prague, Czech Republic
Σελίδες:	1
Θεματική κατηγορία:	[EL] Χημική μηχανική[EN] Chemical Engineering
Κάτοχος πνευματικών δικαιωμάτων:	© The Author(s) 2022
Όνομα εκδήλωσης:	ISE regional meeting
Τοποθεσία εκδήλωσης:	Prague, Czech Republic
Ημ/νία έναρξης εκδήλωσης:	15/08/2022
Ημ/νία λήξης εκδήλωσης:	19/08/2022
Σημειώσεις:	https://www.ise-online.org/ise-conferences/past_ISE-meetings.php This research is co-financed by Greece and the European Union (European Social Fund – ESF) through the Operational Program Human Resources Development, Education and Lifelong Learning 2014-2020 in the context of the project development of an innovative biomass-based hybrid electrochemical process for the removal of endocrine disruptors (MIS 5050535).
Εμφανίζεται στις συλλογές:	Ερευνητικές ομάδες