Understanding colloidal FeSx formation from iron phosphate precipitation sludge for optimal phosphorus recovery
E Mejia Likosova, J Keller, RA Rozendal, Y Poussade, S Freguia
JOURNAL OF COLLOID AND INTERFACE SCIENCE | ACADEMIC PRESS INC ELSEVIER SCIENCE | Published : 2013
The use of sulfide to form iron sulfide precipitates is an attractive option for separation and recovery of phosphorus and ferric iron from ferric phosphate sludge generated in wastewater treatment. The key factors affecting the simultaneous generation and separation of iron sulfide precipitates and phosphate solution from ferric phosphate sludge have so far not been thoroughly investigated. This study therefore focuses on the recovery of phosphorus from synthetic sludge by controlled sulfide addition under different operating conditions. The factors that affect the phosphorus recovery, as well as the optimal process conditions to achieve an effective solid-liquid separation, were investigat..View full abstract
Awarded by Australian Research Council
We thank Prof. Korneel Rabaey for his valuable input during the early stages of the Project, Mr. David Page for assisting with the particle size and zeta potential analysis and the AWMC Analytical Services Laboratory (ASL) for the ICP analyses. Elena Mejia Likosova thanks The University of Queensland for scholarship support. The Australian Research Council (LP100200122) together with the industry partners Seqwater and Veolia Water funded this work.