| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Treatment of aquaculture effluent with Chlorella vulgaris and Tetradesmus obliquus : the effect of pretreatment on microalgae growth and nutrient removal efficiency |
| Autor/-in: | Tejido-Nuñez, Yaiza Aymerich, Enrique Sancho, Luis Refardt, Dominik |
| et. al: | No |
| DOI: | 10.1016/j.ecoleng.2019.05.021 |
| Erschienen in: | Ecological Engineering |
| Band(Heft): | 136 |
| Seite(n): | 1 |
| Seiten bis: | 9 |
| Erscheinungsdatum: | 2019 |
| Verlag / Hrsg. Institution: | Elsevier |
| ISSN: | 0925-8574 |
| Sprache: | Englisch |
| Schlagwörter: | Aquakultur; Mikroalge; Protozoa; Nährstoff; Abwasserreinigung |
| Fachgebiet (DDC): | 630: Landwirtschaft |
| Zusammenfassung: | The ongoing and increasing worldwide demand for fish has caused a steady increase in aquaculture production during the last decades. This emphasizes the importance of farming systems with a low ecological footprint, like recirculating aquaculture systems (RAS), which are an alternative to traditional open systems. Furthermore, implementing microalgae treatments in RAS, sustainable water management and low discharge of concentrated wastewater could be achieved, allowing its reuse in the system. The influence of three factors on microalgae treatment efficiency in RAS water were studied: i) microalgae species (Chlorella vulgaris, Tetradesmus obliquus), ii) water pre-treatment (sterile filtration), and iii) sampling location within the RAS (e.g. from fish tank, after UV- disinfection, etc.). To this end, fully factorial, replicated cultivations were carried out in 100-ml flasks, and nutrient removal, microalgae growth, and density of bacteria and protozoa were measured for up to 18 days. Results show that both species are able to grow in RAS water and effectively remove nutrients in it, yet their performance depended greatly on water quality. In sterile RAS water, growth and nutrient removal efficiency of C. vulgaris surpassed that of T. obliquus. In non-sterile RAS water, the pattern reversed because of grazing protozoa. The location of sampling within the RAS had no discernible effect on microalgae growth or nutrient removal efficiency. The results confirm that a microalgae-based technology to treat and valorise RAS water is technically feasible, yet caution that inferences made can be reversed depending on the choice of the species and the pretreatment of the RAS water prior to cultivation. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/17506 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | Lizenz gemäss Verlagsvertrag |
| Departement: | Life Sciences und Facility Management |
| Organisationseinheit: | Institut für Umwelt und Natürliche Ressourcen (IUNR) |
| Enthalten in den Sammlungen: | Publikationen Life Sciences und Facility Management |
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Tejido-Nuñez, Y., Aymerich, E., Sancho, L., & Refardt, D. (2019). Treatment of aquaculture effluent with Chlorella vulgaris and Tetradesmus obliquus : the effect of pretreatment on microalgae growth and nutrient removal efficiency. Ecological Engineering, 136, 1–9. https://doi.org/10.1016/j.ecoleng.2019.05.021
Tejido-Nuñez, Y. et al. (2019) ‘Treatment of aquaculture effluent with Chlorella vulgaris and Tetradesmus obliquus : the effect of pretreatment on microalgae growth and nutrient removal efficiency’, Ecological Engineering, 136, pp. 1–9. Available at: https://doi.org/10.1016/j.ecoleng.2019.05.021.
Y. Tejido-Nuñez, E. Aymerich, L. Sancho, and D. Refardt, “Treatment of aquaculture effluent with Chlorella vulgaris and Tetradesmus obliquus : the effect of pretreatment on microalgae growth and nutrient removal efficiency,” Ecological Engineering, vol. 136, pp. 1–9, 2019, doi: 10.1016/j.ecoleng.2019.05.021.
TEJIDO-NUÑEZ, Yaiza, Enrique AYMERICH, Luis SANCHO und Dominik REFARDT, 2019. Treatment of aquaculture effluent with Chlorella vulgaris and Tetradesmus obliquus : the effect of pretreatment on microalgae growth and nutrient removal efficiency. Ecological Engineering. 2019. Bd. 136, S. 1–9. DOI 10.1016/j.ecoleng.2019.05.021
Tejido-Nuñez, Yaiza, Enrique Aymerich, Luis Sancho, and Dominik Refardt. 2019. “Treatment of Aquaculture Effluent with Chlorella Vulgaris and Tetradesmus Obliquus : The Effect of Pretreatment on Microalgae Growth and Nutrient Removal Efficiency.” Ecological Engineering 136: 1–9. https://doi.org/10.1016/j.ecoleng.2019.05.021.
Tejido-Nuñez, Yaiza, et al. “Treatment of Aquaculture Effluent with Chlorella Vulgaris and Tetradesmus Obliquus : The Effect of Pretreatment on Microalgae Growth and Nutrient Removal Efficiency.” Ecological Engineering, vol. 136, 2019, pp. 1–9, https://doi.org/10.1016/j.ecoleng.2019.05.021.
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