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dc.contributor.author | Cruces, Matias | |
dc.contributor.author | Suárez, José | |
dc.contributor.author | Nancucheo, Iván | |
dc.contributor.author | Schwarz, Alex | |
dc.date.accessioned | 2024-09-12T03:36:55Z | |
dc.date.available | 2024-09-12T03:36:55Z | |
dc.date.issued | 2023-12-15 | |
dc.identifier.issn | 0301-4797 | |
dc.identifier.uri | https://repositorio.uss.cl/handle/uss/11260 | |
dc.description | Publisher Copyright: © 2023 | |
dc.description.abstract | A H2-based membrane biofilm reactor (MBfR) was used to remove nitrate from a synthetic ion-exchange brine made up of 23.8 g L−1 NaCl. To aid the selection of the best nitrate management strategy, our research was based on the integrated analysis of ionic exchange and MBfR processes, including a detailed cost analysis. The nitrate removal flux was not affected if key nutrients were present in the feed solution including potassium and sodium bicarbonate. Operating pH was maintained between 7 and 8. By using a H2 pressure of 15 psi, a hydraulic retention time (HRT) of 4 h, and a surface loading rate of 13.6 ± 0.2 g N m−2 d−1, the average nitrate removal flux was 3.3 ± 0.6 g N m−2 d−1. At HRTs of up to 24 h, the system was able to maintain a removal flux of 1.6 ± 0.2 g N m−2 d−1. Microbial diversity analysis showed that the consortium was dominated by the genera Sulfurimonas and Marinobacter. The estimated cost for a 200 m3/h capacity, coupled ion exchange (IX) + MBfR treatment plant is 0.43 USD/m3. This is a sustainable and competitive alternative to an IX-only plant for the same flowrate. The proposed treatment option allows for brine recycling and reduces costs by 55% by avoiding brine disposal expenses. | en |
dc.language.iso | eng | |
dc.relation.ispartof | vol. 348 Issue: Pages: | |
dc.source | Journal of Environmental Management | |
dc.title | Optimization of the chemolithotrophic denitrification of ion exchange concentrate using hydrogen-based membrane biofilm reactors | en |
dc.type | Artículo | |
dc.identifier.doi | 10.1016/j.jenvman.2023.119283 | |
dc.publisher.department | Facultad de Ingeniería y Tecnología | |
dc.publisher.department | Facultad de Ingeniería, Arquitectura y Diseño |
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