AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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Authors: GÁBOR VERÉB, LILLA NAGY, SZABOLCS KERTÉSZ, ILDIKÓ KOVÁCS, CECILIA HODÚR, ZSUZSANNA LÁSZLÓ.
DOI: https://doi.org/10.24193/subbchem.2017.2.20
Published Online: 2017-06-20
Published Print: 2017-06-30
VIEW PDF: HIGHLY EFFICIENT PURIFICATION OF FINELY DISPERSED OIL…
In the present study the purification of finely dispersed oil contaminated water (100 ppm crude oil; doil droplets<2 µm) was investigated by using coagulation/flocculation process, membrane separation and combined methods. As coagulant, polyaluminum chloride (Bopac) iron(III) chloride and aluminum(III) chloride, while as flocculant anionic polyelectrolyte were applied. For the membrane separation, hydrophilic polyethersulfone (PES) microfilter (d=0.2 μm) was used, while for the determination of the purification efficiencies turbidity, chemical oxygen demand and extractable oil content were measured. The utilization of Bopac polyaluminum chloride coagulant (by setting Al3+ content to 20 ppm) resulted in high purification efficiency (96.7%). The extra addition of 1 ppm anionic polyelectrolyte lead to the increase in efficiency up to 98.8%. Due to the effective destabilization of oil in water emulsion the flux highly increased during the microfiltration of the emulsion, since both irreversible and reversible membrane resistances were greatly reduced.
Keywords: oil contaminated waters, coagulation, flocculation, Bopac, membrane filtration
