V Congreso Latinoamericano de Ingeniería Biomédica (CLAIB2011)

Evaluación de un de un reactor ultrasónico para la degradación de aguas contaminadas con paracetamol
Jauregui Haza Ulises Javier, Cruz González Germán, Hernández Martínez Asiel, González Labrada Katia, Milian Rodríguez Yanio

##manager.scheduler.building##: Palacio de Convenciones de La Habana
##manager.scheduler.room##: Sala 12
Fecha: 2011-05-20 09:00  – 10:30
Última modificación: 2011-04-14 12:21

Resumen


The conventional processes and technologies for wastewater treatment do not warranty all the times the removal of persistent substances, like pharmaceuticals. In last years, the search of new systems has increased, particularly of advanced oxidation process (AOPs). The ultrasound is a homogeneous AOPs with external energy contribution. This work deals with the characterization of an ultrasonic reactor for wastewater treatment. The reactor is a Horn like one, with plane transducer with 40 mm of diameter in direct contact with dissolutions. It works at 574, 860 and 1134 kHz of frequency and at variable potency. For the characterization, a complete factorial experimental design with four variables was carried out; two of variables were studied at two levels (water volume and agitation rate), the other one at three levels (ultrasonic frequency) and the last one at five levels (ultrasonic potency). The calorimetric potency was dependent of the used potency in the transducer. However, the calorimetric potency was not change with the increasing of the agitation rate; while the frequency and the volume of water were associated as interactions with the useful potency of the transducer. The efficiency of the transducer did not exceed in any case 12%. A model describing the dependence of the studied variables on calculated potency was established. The degradation of water solution of paracetamol was evaluated. In the best operational conditions, the conversion of paracetamol was 50 %, which is in concordance with the results reported in the literature.