RT journal article
T1 Techno-economic analysis of using microalgae to treat streams from fish RAS farming and replace fish meal: A case study
A1 Vázquez Romero, Bárbara
A1 Villar Navarro, Elena
A1 Perales Vargas-Machuca, José Antonio
A1 Garrido Pérez, Carmen
A1 Ruiz González, Jesús
A2 Tecnologías del Medio Ambiente
K1 Microalgae biotechnology
K1 Techno-economic analysis
K1 Cost
K1 Fish farm
K1 Fish feed
AB Aquaculture streams contain nutrients that can cause eutrophication problems if released to the environment.However, microalgae can absorb these compounds from the water. In this study, an autotrophic microalgaebloom was cultured outdoors in a High-Rate Algal Pond (20 m2) using an aquaculture stream. The process provedto be technically feasible, removing 90 % of nutrients (nitrogen and phosphorus). In addition, the characterisation of the produced microalgae showed suitability to replace fish meal in Solea senegalensis fattening feeds (upto 21.4 % inclusion). The techno-economic analysis of the process at large scale (10.19 ha) resulted in a watertreatment cost varying from 1.37 to 1.66 € m− 3 depending on the assumptions. The capital costs were mainlydriven by the production stage (76–84 % cost of equipment), while labour represented 28–36 % of the operational expenditures. In case microalgae biomass was sold as high-value ingredient for fish feed, total costs couldbe covered between 21 and 81 %.
PB Journal of Water Process Engineering
SN 2214-7144
YR 2024
FD 2024-02-08
LK http://hdl.handle.net/10498/32637
UL http://hdl.handle.net/10498/32637
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 10-nov-2026