Evaluación de la influencia del sustrato principal (ácido acético y ácido acético/melaza) en al selección de cultivo mixto de bacterias acumuladoras de PHA, en un reactor air-lift

In the present grade work one of the stages used for the production of this biopolymer called the selection stage was studied, which seeks to accumulate as much biopolymer bacteria as possible from an activated sludge in a water treatment system, analysing and comparing how this process develops by using a system fed only with acetic acid from vinegar and another with acetic acid-molasses mixture. The work was carried out in an experimental way in the laboratories of the Antonio Nariño University, executing techniques like extension in plate for the counting of accumulating colonies of the biopolymer, titration of volatile fatty acids (VFA) and COD by standard Methods for the monitoring of substrate consumption, measurement of volatile suspended solids for the monitoring of biomass growth in activated sludge systems as well as the sediment index, finding that the selection process produced better results in the system fed with the acetic acid substrate, finding at the end of the experiment that 44% of the total biomass belonged to bacteria producing polyhydroxyalkanoate, against 10% produced in the combined substrate.

• Fecha de publicación: 2019
• Institución: Universidad de América
• Repositorio: Lumieres
• Idioma: spa
• OAI Identifier: oai:repository.uamerica.edu.co:20.500.11839/7596
• Acceso en línea: https://hdl.handle.net/20.500.11839/7596
• Palabra clave: Lodo activado; Etapa de selección; PHAs; Air-lift; Activated sludge; Selection stage; Tesis y disertaciones académicas
• License: Atribución – No comercial – Sin Derivar