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Updated: Jan 30, 2026

Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
Effect of ammonium, electron donor and sulphate transient feeding conditions on sulphidogenesis in sequencing batch
Luis C Reyes-Alvarado1, Frédéric Habouzit2, Eldon R Rene3
1LBE, Univ Montpellier, INRA, 102 Avenue des Etangs, 11100 Narbonne, France; UNESCO-IHE Institute for Water Education, P.O. Box 3015, 2601 DA Delft, The Netherlands.
Abstract:
This work aimed to study the effect of transient feeding conditions on sulphidogenesis in 8 sequencing batch bioreactors (SBR). SBR L1 and H1, operated under steady-state conditions were used as the control reactors, while four SBR were tested under transient feeding conditions using moderate (L2 and L3, feast and famine: 2.5 and 0 g SO42-·L-1) and high (H2 and H3, feast and famine: 15 and 0 g SO42-·L-1) loads. The sulphate removal efficiency (RE) was ≥90% in SBR L2, L3 and H1. The NH4+ famine conditions resulted in a higher sulphate RE (≥40% H3) compared to feast conditions (≤20% H2). Besides, the sulphidogenic first-order kinetic constant was 4% larger and the use of electron donor was 16.6% more efficient under NH4+ famine conditions. Sulphidogenesis is robust to transient feeding conditions, but not when applying high loading rates (SBR H2 and H3).
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