RT dataset T1 Deep eutectic solvent-based protein recovery from microalgal biomass grown in piggery wastewater A1 Moldes Plaza, David A1 Fernández Requejo, Patricia A1 Vega Alegre, María del Sol A1 Bolado Rodríguez, Silvia A2 Elsevier K1 Biodegradable solvents K1 Microalgae Biorefinery K1 Scenedesmus almeriensis K1 Solid-liquid extraction K1 Swine wastewater K1 Taguchi design of experiments AB Microalgae are a promising alternative to address wastewater treatment while converting wastewater nutrients into valuable protein-rich biomass, providing a dual-purpose solution. This study investigates protein recovery from microalgal biomass based on Scenedesmus almeriensis cultivated in swine wastewater using deep eutectic solvents (DESs) and their water mixtures. The behavior of two DESs (choline chloride:urea and choline chloride: glycerol at a 1:2 molar ratio) was evaluated with varying amounts of water. Both DESs outperformed water in protein extraction, and adding water to the DES:biomass mixture improved recoveries. The impact of the experimental factors was evaluated using a factorial design. The highest protein yield (16.8 %) was obtained with DES ChCl:2Urea with 81.6 % of water, by milling discs, a 12:1 DES:biomass ratio and extraction at 30 ◦C by 0.5 h.Despite moderate yields, this work underscores the potential of aqueous solutions of DESs as green solvents for protein recovery from microalgae. YR 2025 FD 2025 LK https://uvadoc.uva.es/handle/10324/78597 UL https://uvadoc.uva.es/handle/10324/78597 LA eng NO Bioresource Technology 440 (2026) 133446, https://doi.org/10.1016/j.biortech.2025.133446 NO Instituto de Procesos Sostenibles DS UVaDOC RD 14-oct-2025