Evaluación de la transferencia de oxígeno con plantas acuáticas en un cultivo hidropónico

Abstract

The transfer of oxygen with aquatic plants in a hydroponic crop was evaluated; choosing Eichornia crassipes, Miriophyllum aquaticum, Schoenoplectus californicus and Typha domingensis. The transfer rate obtained for each of the species studied is very important as a design parameter in wastewater treatment systems. In order to carry out this research two samplings were carried out corresponding to the dry and rainy season in the lagoon of Yahuarcocha. Subsequently, the plants were subjected to a process of acclimatization. In addition, a hydroponic crop with the right amount of nutrients was prepared for the plants. Finally, the dissolved oxygen concentration was measured every hour for a period of 12 hours for 8 days and the rate of oxygen transfer for each species studied was calculated. In this way, it was found that Miriophyllum aquaticum transfers 12.11 g * m-2 * day-1 oxygen, followed by Eichornia crassipes with 5.58 g * m-2 * day-1 oxygen, but plants which were less efficient in oxygen transfer were Schoenoplectus californicus and Typha domingensis with 3.13 g * m-2 * day-1 and 2.34 g * m-2 * day-1 respectively. Finally, the transfer rate produced by aquatic plants is not efficient compared to algae.