Publications by authors named "Nicholas A Milne"
Investigation on removal of perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS), perfluorohexane sulfonate (PFHxS) using water treatment sludge and biochar.
Chemosphere
October 2023
Article Synopsis
- - This study examined how well three common PFAS compounds (PFOA, PFOS, PFHxS) were adsorbed by two types of water treatment sludges and two biochars, revealing that shorter-chain PFHxS had lower adsorption compared to PFOS and that PAC WTS performed better overall.
- - Results indicated that PAC-derived water treatment sludge had a stronger ability to adsorb PFHxS (58.8%) compared to alum WTS (22.6%) and biosolids biochar (41.74%), despite the alum having a larger surface area.
- - The findings suggest that the hydrophobic properties of the sorbent and the chemistry of the coagulants are crucial for PFAS adsorption, while
The study investigated water treatment sludge (WTS) as a phosphorus (P) adsorbent and examined the release of organic matter during the P adsorption process. Previous studies indicated that WTS is an effective adsorbent for P but also releases organic matter, which may affect the organoleptic properties of treated water, but no study has characterised organic release and conducted an in-depth study on its behaviours. This study characterised the organic release during the P adsorption process from four different WTS samples.
View Article and Find Full Text PDFSilica scaling in reverse osmosis of groundwater is a significant issue in water stressed areas due to the limitations that scaling imposes on water recovery. While calcium and magnesium scaling potential can be significantly reduced by the use of ion exchange or other softening processes, the silica scaling potential typically remains. Improving the recovery of reverse osmosis by limiting the potential for silica scale is important in ensuring maximum water recovery.
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