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In the near future phosphorus (P) will be a limited resource in high demand. This will increase the incentives for recycling P in animal manure. In this study the dry-matter-rich fraction from slurry separation was incinerated and the P availability of the ash fraction examined. The aim was to adjust incineration temperature to support a high plant-availability of P in ash. The plant-availability of P was approximately halved when the incineration temperature was increased from 400 to 700 °C. This decrease in plant-availability was probably due to the formation of hydroxyapatite. Incineration temperatures should therefore be kept below 700 °C to ensure a high fertilizer efficiency of P in ash. This may conflict with the energy production, which is optimal at temperatures above 800 °C. An alternative to incineration may therefore be thermal gasification of the dry-matter-rich fraction, which can be carried out efficiently at lower temperatures. [ABSTRACT FROM AUTHOR]

In the title compound, [Pt(C(18)H(15)P)(C(28)H(28)P(2)S)](ClO(4))(2*-)C(3)H(6)O or [Pt(PPh(3))(PSP)](ClO(4))(2*) x CH(3)COCH(3), where PSP is the potentially tridentate chelate ligand bis(2-diphenylphosphinoethyl) sulfide, all three donor groups of the PSP ligand are coordinated to the central Pt atom, with Pt[bond]P = 2.310 (1) A and Pt[bond]S = 2.343 (1) A. The fourth coordination site is occupied by the P donor of the triphenylphosphine ligand [Pt[bond]P = 2.289 (1) A]. The complex cation has exact mirror symmetry, with the S atom, the Pt atom and the P atom of the PPh(3) ligand in the mirror plane. The Pt atom has a distorted square-planar coordination geometry. A pi[bond]pi interaction is present between the phenyl rings of the PPh(3) ligand and the terminal -PPh(2) group of the PSP chelate.