Air sparging during the solid/liquid separation by microfiltration: application of flotation

 
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Air sparging during the solid/liquid separation by microfiltration: application of flotation

Mavrov, V.
Matis, Konstantinos
Erwe, T.
Peleka, Effrosyni
Zampoylis, Dimitrios

A large number of techniques have been used today to limit the membranes fouling and among them, certainly is air bubbling constituting also the transport medium in flotation, as applied in wastewater treatment; flotation is suitable as a pretreatment stage for microfiltration. Ceramic flat-sheet membrane modules were used in this paper, of multi-channel geometry and mainly their fouling tendency and the obtained membrane fluxes were investigated. The objective was to apply, in the laboratory, microfiltration by submerged membranes for the efficient (their observed recovery was of the order of 100%) separation of metal-loaded zeolites. The latter are a typical example of sorbents capable to bond fast and effectively toxic metal cations from contaminated wastewater, however, due to their ultrafine size, separation downstream is generally required. Promising results were realized, regarding the air presence, bubbles size (experienced by inserting in the solution a frother or changing the porosity of the used air diffuser) and solids concentration against the transmembrane pressure (TMP). Flotation was exercised to a real mine effluent

Article / Άρθρο
info:eu-repo/semantics/article

Flotation
Απομάκρυνση μετάλλων
Διοχέτευση άερα
Ρύπανση μεμβρανών
Air sparging
Επίπλευση
Membrane fouling
Zeolites
Metal removal
Ζεόλιθοι

Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (EL)
Aristotle University of Thessaloniki (EN)

2009-06-29T16:58:46Z
2004


Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης, Σχολή Θετικών Επιστημών, Τμήμα Χημείας

urn:ISSN:13835866
Separation and Purification Technology, vol.40 no.1 [2004] p.1-7 [Published Version]

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info:eu-repo/semantics/openAccess



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