sažetak izlaganja sa skupa
Role of bacterial consortium in aerobic bioremediation of food waste
Sažetak
Bioremediation is a green technology that deals with the degradation of various pollutants through the comprehensive action of microorganisms to restore ecosystems to their original state. Anthropogenic activities have become the source of numerous pollutants in ecosystems, with food waste being a specific human waste stream with major impacts. Microorganisms, especially bacteria, have impressive metabolic activity and therefore play an important part for overcoming environmental challenges.
The main focus of this study was the bioremediation of food waste stream with autochthonous microorganisms under submerged conditions, and the isolation and identification of microbial cultures with degradation capacities for organic pollutants. During the experiments, chemical oxygen demand (COD), total suspended solids (TSS), concentration of dissolved oxygen (DO) and pH value were monitored. Microbiological and MALDI-TOF analyses were performed to characterize the microbial isolates. The average pH value was 7.20±1.57, while values of TSS ranged from initial 0.72 to maximal 3.55 g/L. In the 3rd day of the experiment, obtained COD efficiency removal was 68.3%. According to MALDI-TOF analyses, predominat genera of microbial isolates were identified as Sphingobacterium, Chryseobacterium, Microbacterium and Klebsiella. Biostimulation of autochthonous microorganisms from food waste can improve the biodegradation process and contribute significantly to environmental protection in a simple and economically viable way. The microbial isolates can potentially be used for bioaugmentation of food waste streams.
Ključne riječi
bacterial consortium, aerobic, bioremediation, food waste