RT info:eu-repo/semantics/article
T1 Boosting Arthrospira platensis metabolism during biogas upgrading via carbon coated iron-based nanoparticle addition
A1 Anagnostopoulou, Chrysa
A1 Vargas Estrada, Laura Gabriela
A1 Kougias, Panagiotis G.
A1 Muñoz Torre, Raúl
K1 Arthrospira platensis
K1 Biogas upgrading
K1 Carbon-coated iron nanoparticles
K1 CO2 consumption
K1 Phycocyanin production
K1 3308 Ingeniería y Tecnología del Medio Ambiente
AB Carbon-coated iron-based nanoparticles have demonstrated a significant potential to enhance the performance ofbiological processes, particularly microalgal cultivation. In this study, the effect of two types of commerciallyavailable iron-based nanoparticles, namely CALPECH and SMALLOPS, was evaluated on Arthrospira platensismetabolism during biogas upgrading in batch cultures. Both nanoparticles enhanced CO2 capture, O2 production,cyanobacterial growth and phycocyanin synthesis across all tested concentrations. However, the highestphycocyanin content (180 mg⋅g 1) was reached by the addition of CALPECH nanoparticles at 100 mg⋅L 1.Further experiments under stress conditions, including increased light intensity (300 and 600 μmol⋅m 2⋅s 1) andsalinity (0.1–0.5 M NaCl) confirmed the beneficial effects of CALPECH. At 600 μmol⋅m 2⋅s 1 CALPECH nano-particles enhanced biomass productivity and increased CO2 capture by 33 % while maintaining phycocyanincontent at 178 mg⋅g 1. Moreover, the addition of 100 mg⋅L 1 of CALPECH nanoparticles at 0.1 M NaCl slightlyimproved biogas upgrading performance and increased phycocyanin content to 192.7 mg⋅g 1. In this context,increasing salinity to 0.5 M caused stress in Arthrospira platensis cells, reducing photosynthetic efficiencyregardless of nanoparticle addition. These outcomes highlight the potential of carbon-coated iron-based nano-particles to improve Arthrospira platensis growth and pigment production, which would ultimately increase thetechno-economic feasibility of photosynthetic biogas upgrading
PB Elsevier
SN 1359-5113
YR 2026
FD 2026
LK https://uvadoc.uva.es/handle/10324/82594
UL https://uvadoc.uva.es/handle/10324/82594
LA eng
NO Process Biochemistry, 2026, vol. 162, p. 32-42
NO Producción Científica
DS UVaDOC
RD 05-feb-2026