Removal of algal-derived organic material by preozonation and coagulation: Monitoring changes in organic quality by pyrolysis-GC-MS

Comparing dissolved air flotation and conventional sedimentation to remove cyanobacterial cells of Microcystis aeruginosa

“…3(a and b)). The same behaviour was already obtained by Widrig et al [41] with model waters containing algal-derived organic matter like Microcystis. Unlike alum, WAC can overcome the effect of the influent concentration, yielding similar turbidity residuals for both feed concentrations.…”

Fate of toxic cyanobacterial genera from natural bloom events during ozonation

“…5) due to ozonation could be the key factor in successful coagulation of cells (Widrig et al, 1996;Plummer and Edzwald, 2002;Chen et al, 2009;Ma et al, 2011Ma et al, , 2012Coral et al, 2013). Agglomeration of damaged cells and formation of larger particles were observed after 10 min of ozone contact (Fig.…”

“…In the case of laboratory-grown cells, total and immediate loss of cell membrane integrity was observed at very low CTs (<0.2 mg min O 3 /L) (Coral et al, 2013). Pre-ozonation is known to enhance coagulation processes and efficient coagulation and successful clarification of algal cells in treatment plants equipped with preozonation has been documented (Widrig et al, 1996;Chen et al, 2009;Ma et al, 2012;Zamyadi et al, 2013a).…”

The impact of algogenic organic matter on water treatment plant operation and water quality: A review

“…In the study of (Henderson et al 2010), EOM of C. vulgaris, M. aeruginosa and Asterionella formosa was relatively treatable by coagulation using aluminium sulphate at pH 7 with removal efficiencies of 71%, 55% and 46%, respectively. Some studies (Widrig et al 1996;Safarikova et al 2013) demonstrated that during the coagulation of AOM laden waters ferric and aluminium coagulants perform in a similar way.…”