Microbial biodegradation of polyethylene of low density, under controlled thermal conditions in air lift bio-reactor

• Alexandra Milagros Hermoza Rojas ^[1] ; Jorge Jave Nakayo ^[2] ; Jorge Luis López Bulnes ^[2] ; Vicenta Irene Tafur Anzualdo ^[3]
  1. [1] Universidad César Vallejo

     Universidad César Vallejo

     Provincia de Trujillo, Perú

     
  2. [2] Universidad Nacional Mayor de San Marcos

     Universidad Nacional Mayor de San Marcos

     Perú

     
  3. [3] National University Federico Villarreal (PER)

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• Localización: 3c Tecnología: glosas de innovación aplicadas a la pyme, ISSN-e 2254-4143, Vol. 9, Nº. Extra 1, 2020 (Ejemplar dedicado a: «6th International Conference on Green Computing and Engineering Technologies»), págs. 179-189
• Idioma: inglés
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• Resumen

  • The present investigation seeks to identify new mechanisms that serve as tools for the mitigation of plastic contamination through the biodegradation of low density polyethylene using microorganisms of the species Pseudomona aeruginosa (bacteria) and Aspergillus brazilensis (fungus) under controlled thermal conditions in an airlift bioreactor. The methods used were 2 samples of low density polyethylene with concentrations of 50 mg/L and 2 samples of 100 mg/L deposited in an airlift bioreactor under controlled thermal conditions with a duration of 7 days. As a result it was obtained that the species Pseudomona aeruginosa (bacteria) reduced the low density polyethylene sample by 2% with a concentration of 49 mg/L at a temperature of 21.8ºC with a pH of 6.5 and dissolved oxygen (OD) of 6.8 mg/L, likewise the species Aspergillus brazilensis (fungus) reduced the low density polyethylene sample by 7% reaching a concentration of 93 mg/L at 22.1ºC of temperature, 7.14 of pH and 7.45 of dissolved oxygen (OD).