Modelling recovery of ammonium from urine by electro-concentration in a 3-chamber cell
Emma Thompson Brewster, Johannes Jermakka, Stefano Freguia, Damien J Batstone
Water Research | PERGAMON-ELSEVIER SCIENCE LTD | Published : 2017
Electro-concentration enables treatment and nutrient recovery from source-separated urine, and is a potential technology for on-site treatment using a 3 compartment configuration that has anode, cathode and middle concentrate compartments. There is a particular focus on driving concentration towards the precipitation threshold in the concentrate compartment to generate solid ammonium salts, including ammonium bicarbonate. To evaluate controlling mechanisms and the feasibility of achieving high concentrations, a dynamic mechanistic model was developed and validated using experiments with synthetic urine. It was identified that high concentrations are prevented by increased back diffusion (dif..View full abstract
Awarded by Australian Research Council
Awarded by Australian Grain Research & Development Corporation Grain Research Scholarship
This research was supported financially by Australian Research Council Project LP 150100402 in partnership with Queensland Urban Utilities (QUU) and ABR Process Development; the Australian Grain Research & Development Corporation Grain Research Scholarship (GRS10661) supporting Emma Thompson Brewster; and the Maj and Tor Nessling foundation and Walter Ahlstrom foundation supporting Johannes Jermakka. The authors acknowledge the facilities, and the scientific and technical assistance of the Analytical Services Laboratory at the Advanced Water Management Centre, The University of Queensland.