Abstract
The performance of UV-activated persulfate (UV/PS) technology as preoxidation process to enhanceMicrocystis aeruginosa removal by subsequent coagulation-sedimentation was firstly evaluated. Theresults demonstrate that UV/PS preoxidation could successfully promote coagulation of algae cellsthrough the effective neutralization of zeta potential, which was caused by the changes of cell mor-phology, size distribution and surface properties after simultaneous UV irradiation and formed reactivespecies (i.e. SO4•−and HO•) oxidation. Since excessive oxidation would cause cell rupture along withthe release of organics, which could deteriorate coagulation efficiency, optimal PS dose (60 mg/L) andUV dose (375 mJ/cm2) were proposed to exist in this study. The concentrations of extracellular algal∗
Original language | English |
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Pages (from-to) | 508-515 |
Number of pages | 8 |
Journal | Journal of Hazardous Materials |
Volume | 322 |
Issue number | Part B |
DOIs | |
Publication status | Published - 2016 |
Keywords
- Microcystis aeruginosa
- Ultraviolet/persulfate