title: Effect of mineral elements on phosphorus release from heated sewage sludge.
abstract: The aim of this work was to examine the influence of mineral elements on phosphorus (P) release from heated waste sludges. Energy dispersive X-ray microanalysis suggested that P was associated with Al, Ca, and Mg on the surface of waste sludge biomass obtained from six wastewater treatment plants. The extent of P release decreased with increasing the total concentrations of Al, Mg, and Ca in waste sludges. The addition of Al2(SO4)3, Ca(OH)2, CaCl2, MgSO4, or NaAlO2 to activated sludges, which were taken from a bench-scale EBPR process, reduced the P release significantly.
authors.affiliation: Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan. tackey@hiroshima-u.ac.jp
authors.forename: Noboru
authors.initials: N
authors.lastname: Takiguchi
authors.forename: Machiko
authors.initials: M
authors.lastname: Kishino
authors.forename: Akio
authors.initials: A
authors.lastname: Kuroda
authors.forename: Junichi
authors.initials: J
authors.lastname: Kato
authors.forename: Hisao
authors.initials: H
authors.lastname: Ohtake
mesh_terms: D004577:Electron Probe Microanalysis; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D008903:Minerals / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D012722:Sewage
chemical_list: D008903:Minerals; D012722:Sewage; D010758:Phosphorus