Recovery of nutrients (N-P-K) from potassium-rich sludge anaerobic digestion side-streams by integration of a hybrid sorption-membrane ultrafiltration process: use of powder reactive sorbents as nutrient carriers

Hermassi, M., Valderrama, C., Gibert, O., Moreno, N., Querol, X., Batis, N. and Cortina, J.L.

Science of the Total Environment. December 2017. Volumes 599-600, pages 422-430 (doi:10.1016/j.scitotenv.2017.04.140)