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Ammonia recovery from brines originating from a municipal wastewater ion exchange process and valorization of recovered nitrogen into microbial protein

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Abstract
A hollow fibre membrane contactor (HFMC), and two vacuum thermal stripping processes, a rotary evaporator (VTS) and multi-component system (MVTS) were compared for their ability to recover ammonia (NH3) from ion exchange (IEX) regeneration brines. The IEX was a 10 m3/day demonstration scale plant fed with secondary municipal wastewater. The 10% potassium chloride regeneration brine was used multiple times leading to ammonium (NH4+-N) saturation (up to 890 mg N/L). When treating the saturated IEX brine, the highest NH3 mass transfer coefficient for the HFMC, MVTS and VTS were 0.6, 0.7 and 0.1 h−1, respectively, compared to values between 1.7 and 3.5 h−1, when treating a synthetic solution. The highest NH3 recovery was obtained with the HFMC (99.8%) and the ammonium sulphate produced was characterised for impurities, presenting high quality. Concentrated ammonium (NH4+-N) solutions (0.5–3.1 g N/L) were obtained from the MVTS and VTS processes. To further valorise the recovered NH4+-N solution produced from the MVTS process, this was used as a substrate for microbial protein (MP) production. Limited differences were observed for production rate (specific growth rate 0.092–0.40 h−1), protein yield (0.021–0.18 g protein/g acetate-CODconsumed) and protein content (0.073–0.87 g protein/g cell dry weight) between recovered and commercial nitrogen (N) sources, indicating that recovered N from IEX can serve as a substrate for MP production. This study demonstrates a comprehensive N management solution for wastewater applications, leading to a range recovered products. These combined technologies can contribute to the local economy, whilst delivering to the ambitious NET-ZERO and circular economy targets.
Keywords
Ammonia recovery, Ion exchange, Regenerant brine, Liquid-gas-liquid mass transfer, Single cell protein, ACID ABSORPTION PROCESS, MEMBRANE CONTACTORS, STRIPPING PROCESS, REMOVAL, GROWTH, GAS, NITRIFICATION, MICROALGAE, EFFLUENTS, SCALES

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MLA
Guida, Samuela, et al. “Ammonia Recovery from Brines Originating from a Municipal Wastewater Ion Exchange Process and Valorization of Recovered Nitrogen into Microbial Protein.” CHEMICAL ENGINEERING JOURNAL, vol. 427, 2022, doi:10.1016/j.cej.2021.130896.
APA
Guida, S., Van Peteghem, L., Luqmani, B., Sakarika, M., McLeod, A., McAdam, E. J., … Soares, A. (2022). Ammonia recovery from brines originating from a municipal wastewater ion exchange process and valorization of recovered nitrogen into microbial protein. CHEMICAL ENGINEERING JOURNAL, 427. https://doi.org/10.1016/j.cej.2021.130896
Chicago author-date
Guida, Samuela, Lotte Van Peteghem, Ben Luqmani, Myrsini Sakarika, Andrew McLeod, Ewan J. McAdam, Bruce Jefferson, Korneel Rabaey, and Ana Soares. 2022. “Ammonia Recovery from Brines Originating from a Municipal Wastewater Ion Exchange Process and Valorization of Recovered Nitrogen into Microbial Protein.” CHEMICAL ENGINEERING JOURNAL 427. https://doi.org/10.1016/j.cej.2021.130896.
Chicago author-date (all authors)
Guida, Samuela, Lotte Van Peteghem, Ben Luqmani, Myrsini Sakarika, Andrew McLeod, Ewan J. McAdam, Bruce Jefferson, Korneel Rabaey, and Ana Soares. 2022. “Ammonia Recovery from Brines Originating from a Municipal Wastewater Ion Exchange Process and Valorization of Recovered Nitrogen into Microbial Protein.” CHEMICAL ENGINEERING JOURNAL 427. doi:10.1016/j.cej.2021.130896.
Vancouver
1.
Guida S, Van Peteghem L, Luqmani B, Sakarika M, McLeod A, McAdam EJ, et al. Ammonia recovery from brines originating from a municipal wastewater ion exchange process and valorization of recovered nitrogen into microbial protein. CHEMICAL ENGINEERING JOURNAL. 2022;427.
IEEE
[1]
S. Guida et al., “Ammonia recovery from brines originating from a municipal wastewater ion exchange process and valorization of recovered nitrogen into microbial protein,” CHEMICAL ENGINEERING JOURNAL, vol. 427, 2022.
@article{8725385,
  abstract     = {{A hollow fibre membrane contactor (HFMC), and two vacuum thermal stripping processes, a rotary evaporator (VTS) and multi-component system (MVTS) were compared for their ability to recover ammonia (NH3) from ion exchange (IEX) regeneration brines. The IEX was a 10 m3/day demonstration scale plant fed with secondary municipal wastewater. The 10% potassium chloride regeneration brine was used multiple times leading to ammonium (NH4+-N) saturation (up to 890 mg N/L). When treating the saturated IEX brine, the highest NH3 mass transfer coefficient for the HFMC, MVTS and VTS were 0.6, 0.7 and 0.1 h−1, respectively, compared to values between 1.7 and 3.5 h−1, when treating a synthetic solution. The highest NH3 recovery was obtained with the HFMC (99.8%) and the ammonium sulphate produced was characterised for impurities, presenting high quality. Concentrated ammonium (NH4+-N) solutions (0.5–3.1 g N/L) were obtained from the MVTS and VTS processes. To further valorise the recovered NH4+-N solution produced from the MVTS process, this was used as a substrate for microbial protein (MP) production. Limited differences were observed for production rate (specific growth rate 0.092–0.40 h−1), protein yield (0.021–0.18 g protein/g acetate-CODconsumed) and protein content (0.073–0.87 g protein/g cell dry weight) between recovered and commercial nitrogen (N) sources, indicating that recovered N from IEX can serve as a substrate for MP production. This study demonstrates a comprehensive N management solution for wastewater applications, leading to a range recovered products. These combined technologies can contribute to the local economy, whilst delivering to the ambitious NET-ZERO and circular economy targets.}},
  articleno    = {{130896}},
  author       = {{Guida, Samuela and Van Peteghem, Lotte and Luqmani, Ben and Sakarika, Myrsini and McLeod, Andrew and McAdam, Ewan J. and Jefferson, Bruce and Rabaey, Korneel and Soares, Ana}},
  issn         = {{1385-8947}},
  journal      = {{CHEMICAL ENGINEERING JOURNAL}},
  keywords     = {{Ammonia recovery,Ion exchange,Regenerant brine,Liquid-gas-liquid mass transfer,Single cell protein,ACID ABSORPTION PROCESS,MEMBRANE CONTACTORS,STRIPPING PROCESS,REMOVAL,GROWTH,GAS,NITRIFICATION,MICROALGAE,EFFLUENTS,SCALES}},
  language     = {{eng}},
  pages        = {{11}},
  title        = {{Ammonia recovery from brines originating from a municipal wastewater ion exchange process and valorization of recovered nitrogen into microbial protein}},
  url          = {{http://dx.doi.org/10.1016/j.cej.2021.130896}},
  volume       = {{427}},
  year         = {{2022}},
}

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