Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Phosphorus and potassium recovery from anaerobically digested olive mill wastewater using modified zeolite, fly ash and zeolitic fly ash: a comparative study
Δημιουργός/Συγγραφέας:	Mitrogiannis, Dimitris Psychogiou, Maria Manthos, Georgios Tsigkou, Konstantina Kornaros, Michael Koukouzas, Nikolaos Michailidis, Dimitris [EL] Παλλές, Δημήτρης[EN] Palles, Dimitris [EL] Καμίτσος, Ευστράτιος Ι.[EN] Kamitsos, Efstratios I. Mavrogonatos, Constantinos Baziotis, Ioannis
Ημερομηνία:	2022
Γλώσσα:	Αγγλικά
ISSN:	0268-2575 1097-4660
DOI:	10.1002/jctb.7059
Περίληψη:	BACKGROUND Nutrient recovery from wastewater is gaining attention in the frame of circular economy. In this study, Ca(OH)2-treated zeolite (CaT-Z), lignite fly ash (FA) and zeolitic fly ash (ZFA) were primarily used to adsorb phosphate phosphorus (PO4-P) from anaerobically digested olive mill wastewater (ADOMW). The simultaneous recovery of potassium (K) was also examined based on adsorption and desorption data. The fractionation of adsorbed P was determined as an important parameter for its plant availability. RESULTS More P was adsorbed from ADOMW on ZFA and FA (up to 4.35 and 5.21 mg g−1, respectively) than on CaT-Z (2.62 mg g−1). An increased P adsorption on ZFA and FA was observed between incubation times of 7 and 14 days. The sequential desorption procedure verified the trend of P adsorption capacities and showed that the plant-available P (NaHCO3-P) amounted to 1.34, 2.34 and 1.69 mg g−1 CaT-Z, ZFA and FA, respectively. After 14 days, CaT-Z and ZFA adsorbed much more K (19.2 and 20.5 mg g−1, respectively) than FA (4.3 mg g−1). The desorption of exchangeable K confirmed this difference. Scanning electron microscopy–energy dispersive spectrometry analyses indicated P adsorption and surface precipitation as Ca–P phases as well as K+ for Ca2+ ion exchange on the loaded adsorbents. CONCLUSIONS ZFA was more efficient for dual adsorption combining the properties of the zeolitic fraction (enhanced K adsorption) and pristine FA (P adsorption on Ca-bearing phases). The sufficient concentrations of plant-available P and K on the three adsorbents suggest their potential use as soil amendments. © 2022 Society of Chemical Industry (SCI).
Τίτλος πηγής δημοσίευσης:	Journal of Chemical Technology & Biotechnology
Τόμος/Κεφάλαιο:	97
Τεύχος:	7
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry [EL] Φασματοσκοπία[EN] Spectroscopy [EL] Χημεία (Γενικά)[EN] Chemistry (General)
Λέξεις-Κλειδιά:	Olive mill wastewater Phosphate Potassium Zeolite Fly ash Adsorption
Χρηματοδοτικό πρόγραμμα:	Demonstration of dry fermentation and optimization of biogas technology for rural communities in the MENA region Development and demonstration of a hybrid CSP-biomass gasification boiler system National Infrastructure in Nanotechnology, Advanced Materials and Micro-/Nanoelectronics
Αναγνωριστικό χρηματοδοτικού προγράμματος:	MIS 5041606 MIS Τ3ΕΡΑ-00047 MIS 5002772
Κάτοχος πνευματικών δικαιωμάτων:	© 2022 Society of Chemical Industry (SCI)
Ηλεκτρονική διεύθυνση στον εκδότη (link):	https://onlinelibrary.wiley.com/doi/epdf/10.1002/jctb.7059
Σημειώσεις:	supporting information: https://onlinelibrary.wiley.com/doi/10.1002/jctb.7059
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο