Phosphorus adsorption and organic release from dried and thermally treated water treatment sludge

• DOI: 10.1016/j.envres.2023.116524
• Publication Date: 2023-07-06T23:12:26Z
• Authors: Minh Duc Nguyen; David Donaldson; Sirjana Adhikari; Negin Amini; Deepak Surendhra ...; Michael Thomas; Ellen M. Moon; Nicholas A. Milne
• Keywords: Thermal Treatment

The study investigated water treatment sludge (WTS) as a phosphorus (P) adsorbent and examined the release of organic matter during P adsorption process. Previous studies indicated that WTS is an effective for but also releases matter, which may affect organoleptic properties treated water, no has characterised conducted in-depth on its behaviours. This process from four different samples. offers results 60-day column experiment indicate columns effectively removed majority 2 mg/L feed solution. total carbon (TOC) was gradually reduced 24.9 day 1 to stable levels 4.4 4.1 22 onwards. After 60 days, when nearly exhausted, were still in In addition, thermal at temperatures reduce TOC increase adsorption. showed not only minimized enhanced capacity sludge. 24-h batch experiment, 600 °C highest (1.7 mg/g) with negligible compared 500 (1.2 mg/g), 700 (1.5 dried (0.75 mg/g). However, inorganic compounds slightly increased after treatment. Future could focus determining whether processing can enhance WTS's emerging pollutants like per- poly-fluoroalkyl substances other contaminants. findings this influence management practices authorities contribute sector's sustainability objectives.