Biorremediación de aguas con hidrocarburo y producción de voltaje en dispositivo bioelectroquímico
Palabras clave:
Electrógeno, Dispositivo electroquímico, B. altitudinisResumen
La celda de combustible microbiana (CCM) es un dispositivo electroquímico donde la energía química de la materia orgánica puede ser transformada en electricidad. En la cámara anódica la remoción del hidrocraburo y la simultánea generación de voltaje dependen de la concentración del inóculo. Con un inóculo inicial de 34 x 104 ±3 unidades formadoras de colonias por mililitro (UFC/mL), a los 100 días se alcanzó a generar un voltaje de ~ 400 mV con una población de 50 x 105 ±3 UFC/mL. El microorganismo electrógeno B. altitudinis en la cámara anódica toleró hasta 20000 ppm de hidrocarburos y en la CCM logró degradar hasta el 70 % del petroleo inicial. Y mediante la voltamperometría cíclica se evidenció la existencia de compuestos redox generados por B. altitudinis durante el consumo del petróleo como unica fuente de carbono. El uso de B. altitudinis para la remoción de hidrocarburos en aguas y producción simultánea de energía mediante CCMs puede ser una alternativa a las tecnologías convencionales.
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