Abstract :
[en] Phosphate minerals have long been used for the production of phosphorus-based chemicals
used in many economic sectors. However, these resources are not renewable and the natural
phosphate stocks are decreasing. In this context, the research of new phosphate sources has
become necessary. Many types of wastes contain non-negligible phosphate concentrations, such
as wastewater. In wastewater treatment plants, phosphorus is eliminated by physicochemical
and/or biological techniques. In this latter case, a specific microbiota, phosphate accumulating
organisms (PAOs), accumulates phosphate as polyphosphate. This molecule can be considered as an alternative phosphate source, and is directly extracted from wastewater generated by human activities. This review focuses on the techniques which can be applied to enrich and try to isolate these PAOs, and to detect the presence of polyphosphate in microbial cells.
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