Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Ca(OH)2 Pre-Treated Bentonite for Phosphorus Removal and Recovery From Synthetic and Real Wastewater
Δημιουργός/Συγγραφέας:	Markou G. Mitrogiannis D. Inglezakis V. Muylaert K. Koukouzas N. Tsoukalas N. [EL] Καμίτσος, Ευστράτιος Ι.[EN] Kamitsos, Efstratios I. [EL] Παλλές, Δημήτρης[EN] Palles, Dimitris Baziotis I.
Εκδότης:	Wiley-VCH Verlag
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	1863-0650
DOI:	10.1002/clen.201700378
Περίληψη:	The performance of chemically pre-treated bentonite with Ca(OH)2 toward ortho-phosphate phosphorus (OPP) removal efficiency in synthetic (inorganic) and real (anaerobically digested effluents) wastewater (WW) is evaluated. The Ca(OH)2 pre-treated bentonite displays a significant increase of OPP uptake (qe; mg P g−1 bentonite) of 40 and 15 times, reaching about 14 and 5.5 mg P g−1 for synthetic and real WW, respectively. The optimum pH for OPP sorption is 7, while at higher pH values, although OPP removal is high due to the precipitation in the liquid phase, the OPP removal in solid phase, that is, sorption onto bentonite surface is less compared to pH 7. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis shows that OPP forms various complexes with co-existing ions in WW, such as apatite (with Ca2+) and struvite (with NH+4 and Mg2+). The most influential parameter of the pre-treatment is the dosage of Ca(OH)2. Concentration of 0.5 M Ca(OH)2 or higher is necessary for an efficient pre-treatment. In contrast, the concentration of bentonite does not affect the pre-treatment efficiency, and a mass of 500 g L−1 bentonite is found to be sufficient. The chemical pre-treatment with Ca(OH)2 renders bentonite a promising low-cost sorbent for OPP removal and recovery from WW.
Τίτλος πηγής δημοσίευσης:	Clean - Soil, Air, Water
Τόμος/Κεφάλαιο:	46
Τεύχος:	2
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	bentonite ligand exchange phosphorus removal pre-treatment sorption
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο