Phosphorus speciation in sewage sludge and their ashes after incineration as a function of treatment processes
Charlotte Nilsson,
Stefan Karlsson,
Bert Allard
et al.
Abstract:Phosphorus (P) is a key component in agricultural fertilizers, but it is also a scarce resource, why its recycling has been thoroughly investigated and one promising resources is sewage sludge. Because of stricter regulations in terms of sludge disposal, thermal treatment (e.g. incineration) has become an attractive option. The incineration process alters the chemical speciation of P in favour to calcium-associated (apatite, apatite phosphorus (AP)) species, which is preferred for P recovery. In order to achie… Show more
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