Tasa de remoción de fósforo de aguas marinas mediante el cultivo de Tetraselmis suecica

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Sorayda Mendoza Espinoza
Juan Fernando Merino Moya
Carmen Yzásiga Barrera
Mirian Noemi Velásquez Guarniz

Resumen

La disposición de fósforo en los océanos es una de las principales causas de contaminación de los ecosistemas marinos, con severos impactos sobre la vida acuática y por lo cual urge desarrollar medidas de mitigación. En este estudio, se evaluó el uso de la microalga Tetraselmis suecica para remover fósforo (P) del agua marina. Se emplearon tratamientos experimentales de 23.03, 44.80, 79.50 y 94.20 mg L-1 de (NH4)2 HPO4 y un control con medio Heussler-Merino (HM). Las unidades de cultivo consistieron de fotobiorreactores (2000 mL) conservados con aireación e iluminación constante. Durante el cultivo, las unidades mantuvieron crecimientos similares, sin embargo, los controles presentaron mayores tasas de crecimiento. Al final del experimento, los porcentajes de remoción disminuyen con el aumento de la concentración del P, con valores de 77.83 % en los controles y 36.20 % en los dosificados con 94.2 mg L-1 de P. Estos resultados demuestran las excelentes posibilidades de utilizar cultivos masivos de T. suecica, para remover el exceso de P del ambiente acuático marino.

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