A hybrid flotation—microfiltration process for metal ions recovery

 
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2005 (EN)
A hybrid flotation—microfiltration process for metal ions recovery

Mavrov, V.
Matis, Konstantinos
Lazaridis, Nikolaos
Gallios, Georgios
Zoumpoulis, Anastasios

In the present study, the removal of two metal ions (copper or chromates) was investigated by employing a hybrid flotation-microfiltration process. Air bubbling, used to limit membranes fouling, could be meanwhile used (under appropriate conditions) as the transport means of flotation. Two flotation techniques were applied; precipitate and adsorbing colloid flotation. In the latter the bonding agent (ferric hydroxide) was in situ produced. The main parameters studied were surfactant, frother and ferric ion concentration. Under the studied conditions, the higher the surfactant or frother concentration the lower the transmembrane pressure was observed while backflush found to have a small effect on hybrid cell operation. Promising results were obtained: the concentration in the outlet was 0.5 mg L−1 for copper and 0.1 mg L−1 for chromium, from initially 50 mg L−1. Attention was also paid to the economics of this integrated process.

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

Precipitate
Transmembrane pressure Flat sheet
Colloid
Metal removal

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

English

2005
2009-07-07T09:27:03Z


Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης, Σχολή Θετικών Επιστημών, Τμήμα Χημείας

urn:ISSN:03767388
Journal of Membrane Science, vol.247 no. 1-2 [2005] p.29-35 [Published Version]

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