RT Journal Article
T1 Improving the effectiveness of safe cyanotoxin removal from drinking water using magnetic iron oxide nanoparticle-loaded carbon composites
A1 Cao Cancelas, Alejandro
A1 Vilariño del Río, Natalia
A1 Alves, Lisandra Cristina de Castro
A1 Piñeiro Redondo, Yolanda
A1 Rivas Rey, José
A1 Botana López, Ana María
A1 Carrera González, María Cristina
A1 Sáinz Oses, María Jesús
A1 Rodríguez Santos, Luis
A1 Louzao Ojeda, María del Carmen
A1 Botana López, Luis Miguel
K1 Cyanotoxin adsorption
K1 Magnetic nanostructured particles
K1 Drinking water safety
AB Climate change and eutrophication have increased cyanobacterial blooms, raising exposure to cyanotoxins in drinking water. This study investigates efficacy improvement of two magnetic nanostructured particles with different adsorbent materials, mesoporous carbon (P-Mes) and Merck activated carbon (P-MAC), for cyanotoxin removal. Safety of these materials is also investigated in extreme conditions of physical deterioration. Their efficacy was tested using pre-cleaning with organic solvents, different toxin concentrations, particle/volume ratios and toxin mixtures. Acetonitrile and ethanol pre-cleaning improved toxin adsorption in both particles. P-Mes particles demonstrated high adsorption for high-molecular-weight toxins, achieving 97 % removal of microcystin-LR at a particle-to-water ratio of 1:750 μL, and were also effective removing seven other microcystins and saxitoxin. P-MAC particles exhibited superior performance for low-molecular-weight toxins, achieving removal rates of 98 %, 91 % and 83 % for anatoxin-a, saxitoxin, and cylindrospermopsin respectively, at a particle-to-water ratio of 1:1.5 mL. Additionally, combination of particles or toxin mixtures did not inhibit their effectiveness. In vitro toxicity assessments using pulverized particles to increase possible release of toxic components indicated no cytotoxicity in SH-SY5Y, CACO-2, HepG2, and CAKI-1 lines, and no alteration of CACO-2 monolayers electrical resistance. Overall, materials preconditioning, particle-to-volume ratio adjustment, and selection of appropriate composite combination enhances removal of nine toxins.
PB Elsevier
SN 2214-7144
YR 2025
FD 2025-05-23
LK https://hdl.handle.net/10347/44079
UL https://hdl.handle.net/10347/44079
LA eng
NO Cao, A., Vilariño, N., de Castro Alves, L., Piñeiro, Y., Rivas, J., Botana, A. M., Carrera, C., Sainz, M. J., Rodríguez-Santos, L., Louzao, M. C., & Botana, L. M. (2025). Improving the effectiveness of safe cyanotoxin removal from drinking water using magnetic iron oxide nanoparticle-loaded carbon composites. Journal of Water Process Engineering, 75, 107962. 10.1016/j.jwpe.2025.107962
NO The research leading to these results has received funding mainly from grant PID2020-112626RB-C21 funded by MCIN/AEI/10.130 39/501100011033, modalities “Research Challenges” and “Knowledge Generation”. From Consellería de Cultura, Educación e Ordenación Universitaria, Xunta de Galicia, GRC (ED431C 2021/01). From Ministerio de Ciencia e Innovación, Grant CPP2021-008447 and by the European Union NextGenerationEU/PRT. From Ministerio de Ciencia, Innovación y Universidades, PID2023-149618OB-I00. From Interreg EAPA-0032/2022 – BEAP-MAR (cofunded by the EU), from European Union HORIZON-CL6-2023-CIRCBIO-01 and COMBO - 101135438.
DS Minerva
RD 25 abr 2026