S Venkata Mohan
Bioengineering and Environmental Centre (BEEC), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500 007,
India
Research Article
Polyhydroxy alkanoates Production by Newly Isolated Bacteria Serratia ureilytica Using Volatile Fatty Acids as Substrate: Bio-Electro Kinetic Analysis
Author(s): M Venkateswar Reddy and S Venkata MohanM Venkateswar Reddy and S Venkata Mohan
Polyhydroxy alkanoates (PHAs) show physical and material properties similar to conventional plastics, so these are considered as an alternative to non-biodegradable plastics. In the present study, PHA production using Serratia ureilytica, a newly isolated bacterial strain from PHA producing bioreactor was investigated using volatile fatty acids as substrate at four different organic loading rates (OLRs, OLR1-OLR4). Among four OLRs, S. ureilytica showed highest PHA production (51% dry cell weight) with OLR2 at 24 h, but it showed highest substrate removal with OLR1 (84%). PHA composition showed the presence of co-polymer, poly (3hydroxybutyrate-co-3hydroxyvalerate), P(3HBco- 3HV). In cyclic voltammetry analysis the activity of specific redox mediators was observed at 24 h and 36 h of PHA production process. Lower Tafel slopes in bio-electrokinetic analysis .. View More»
DOI:
10.4172/1948-5948.1000177