Original ResearchPublished 26 June 2026From waste to resource: nutrient recovery from aquaculture sedimented sludge for sustainable Arthrospira platensis cultivation in circular aquaculture systemsMostafa E. Elshobary · Luca Gerdes genannt Janßen · Tamara Schwenkler · Anja Noke · Stephan S. W. EndeFrontiers in Aquaculturedoi 10.3389/faquc.2026.1822151