Pilot scale on-site demonstration and seasonality assessment of nitrogen recovery and water reclamation from pig's slurry liquid fraction.

Autor: Rodriguez-Alegre R; Leitat Technological Center. Circular Economy & Decarbonization Department, C/ de la Innovació, 2, 08225, Terrassa, Barcelona, Spain; Universitat Politécnica de Catalunya, Chemical Engineering department, C/ Eduard Maristany 10-14, Campus Diagonal-Besòs, 08019, Barcelona, Spain. Electronic address: rrodriguez@leitat.org., Zapata-Jimenez J; Leitat Technological Center. Circular Economy & Decarbonization Department, C/ de la Innovació, 2, 08225, Terrassa, Barcelona, Spain. Electronic address: jzapata@leitat.org., Perez Megias L; Leitat Technological Center. Circular Economy & Decarbonization Department, C/ de la Innovació, 2, 08225, Terrassa, Barcelona, Spain. Electronic address: lperez@leitat.org., Andecochea Saiz C; Leitat Technological Center. Circular Economy & Decarbonization Department, C/ de la Innovació, 2, 08225, Terrassa, Barcelona, Spain. Electronic address: candecochea@leitat.org., Sanchis S; Leitat Technological Center. Circular Economy & Decarbonization Department, C/ de la Innovació, 2, 08225, Terrassa, Barcelona, Spain. Electronic address: ssanchis@leitat.org., Perez-Moya M; Universitat Politécnica de Catalunya, Chemical Engineering department, C/ Eduard Maristany 10-14, Campus Diagonal-Besòs, 08019, Barcelona, Spain. Electronic address: montserrat.perez-moya@upc.edu., Garcia-Montano J; Leitat Technological Center. Circular Economy & Decarbonization Department, C/ de la Innovació, 2, 08225, Terrassa, Barcelona, Spain. Electronic address: jgarcia@leitat.org., You X; Leitat Technological Center. Circular Economy & Decarbonization Department, C/ de la Innovació, 2, 08225, Terrassa, Barcelona, Spain. Electronic address: xyou@leitat.org.
Jazyk: angličtina
Zdroj: Journal of environmental management [J Environ Manage] 2024 Sep 19; Vol. 370, pp. 122597. Date of Electronic Publication: 2024 Sep 19.
DOI: 10.1016/j.jenvman.2024.122597
Abstrakt: Livestock slurry has gathered significant interest as a secondary raw material for fertilisers industry due to its content on macronutrients -nitrogen, phosphorous, and potassium- and organic carbon. In this study, the performance of an on-site pilot plant composed by microfiltration, membrane-assisted stripping, and reverse osmosis for selective recovery of nitrogen as fertiliser and water reclamation was demonstrated for 2 years in a pig farm, referenced to 8 batches for seasonal assessment. Microfiltration mitigated the seasonal variation in the composition of pig slurry leading to stable process efficiency in the following steps. Membrane-assisted stripping resulted in the recovery of up to 56% of nitrogen as high-purity ammonium sulphate, and up to 42% of reclaimed water as reverse osmosis permeate. The proposed train of technologies reported proper performance and robustness during the whole demonstration period as it resulted in the production of reclaimed water and ammonium sulphate with no significant quality variations. The energy cost for both products obtained in this study was found in the average of the previous works reviewed with 12.49 kWh kg -1 NH 3 produced, and 0.37 kWh m -3 of reclaimed water. The environmental assessment showed that nitrogen losses could be reduced by up to 90 kg N ha -1 d -1 by replacing manure spreading with precise fertilisation techniques, enabled by the selective recovery of nitrogen from SLF. Finally, the financial study showed that the scaling up of the proposed train of technologies would result in benefits for farms with more than 1600 pig heads.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Xialei You reports financial support was provided by Horizon Europe. Montserrat Perez-Moya reports financial support was provided by Spain Ministry of Science and Innovation.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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