Petzet, Sebastian and Peplinski, Burkhard and Cornel, Peter (2012):
On wet chemical phosphorus recovery from sewage sludge ash by acidic or alkaline leaching and an optimized combination of both.
In: Water Research, pp. 3769 - 3780, 46, (12), ISSN 0043-1354,
DOI: 10.1016/j.watres.2012.03.068,
[Online-Edition: http://www.sciencedirect.com/science/article/pii/S0043135412...],
[Article]

Petzet, Sebastian and Peplinski, Burkhard and Bodkhe, S.Y. and Cornel, Peter (2011):
Recovery of phosphorus and aluminium from sewage sludge ash by a new wet chemical elution process (SESAL-Phos-recovery process).
In: Water Science and Technology, IWA Publishing, pp. 693-699, 64, (3), [Article]