Journal article
Determining how polymer-bubble interactions impact algal separation using the novel “Posi”-dissolved air flotation process
NR Hanumanth Rao, AM Granville, CI Browne, RR Dagastine, R Yap, B Jefferson, RK Henderson
Separation and Purification Technology | ELSEVIER SCIENCE BV | Published : 2018
Abstract
The novel dissolved air flotation (DAF) process that uses hydrophobically-modified polymers (HMPs) to generate positively charged bubbles (PosiDAF) has been shown to separate negatively charged algal cells without the need for coagulation-flocculation. Previous research has been limited to HMPs of poly(N,N-dimethylaminoethyl methacrylate) (PDMAEMA) and, while they were effective at bench-scale, performance at pilot-scale was better using commercial poly(N,N-diallyl-N,N-dimethylammonium chloride) (PDADMAC). Hence, the aim of this research was to compare the effectiveness of PDADMAC modified with aliphatic and aromatic moieties in comparison to previously tested PDMAEMA HMPs in respect to alga..
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Awarded by Australian National Fabrication Facility
Funding Acknowledgements
This research was partially supported under Australian Research Council's Linkage Projects funding scheme (project number LP0990189) and an Australian Commonwealth Research Training Program (RTP) Scholarship received by Mr Narasinga Rao Hanumanth Rao. This work was also performed in part at the Melbourne Centre for Nanofabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF) and in the Materials Characterisation and Fabrication Platform (MCFP) at the University of Melbourne. The authors would like to thank the UNESCO Centre for Membrane Science and Technology (University of New South Wales) and Particle Fluids Processing Centre (University of Melbourne) for providing infrastructure support over the duration of this work.