Reciclagem biológica do fósforo a partir do efluente suíno originário da biodigestão anaeróbia: uma revisão

The swine effluent (SE) has a high pollution potential, because even after the process of anaerobic digestion, still contains variable concentrations of nutrients, especially of phosphorus (P). This study aimed to investigate through a literature review the biological recycling of P as an alternative for the treatment of SE originating in anaerobic digestion. It was observed that the process known as enhanced biological phosphate removal is the method most used in the removal of P present in effluent. It consists in cycling biomass through aerobic and anaerobic environments and involves the incorporation of P into the cell of bacteria and subsequently the mass removal enriched with P in the slime. Although there are many aspects to be informed about these technologies, it is emphasized that the recycling and recovery of P present in the SE represent important advances in promoting sustainability in the use of this resource that is directly linked to global food security.