AI Article Synopsis
- The study develops a microbial consortium to break down oily food waste at high temperatures using a method called Fed-in-situ biological reduction treatment (FBRT).
- The selected bacteria, including Bacillus tequilensis and Ureibacillus thermosphaericus, were tested under conditions of 55 °C and showed improved oil degradation capabilities.
- FBRT resulted in significant reductions in total mass (86.61%) and non-volatile solids (65.91%) of the food waste, demonstrating its effectiveness as a disposal solution for oily waste.
Article Abstract
This study aims to construct a high-temperature-resistant microbial consortium to effectively degrade oily food waste by Fed-in-situ biological reduction treatment (FBRT). Oil degrading bacteria were screened under thermophilic conditions of mineral salt medium with increased oil content. The oil degradation and emulsification ability of each stain was evaluated and their synergetic improvement was further confirmed. Consortium of Bacillus tequilensis, Bacillus licheniformis, Bacillus sonorensis and Ureibacillus thermosphaericus was selected and applicated as bacterial agents in FBRT under 55 °C. Changes in pH, moisture, bacterial community and key components of food waste were monitored for 5 days during processing. Facilitated by the bacterial consortium, FBRT gave superior total mass reduction (86.61 ± 0.58% vs. 67.25 ± 1.63%) and non-volatile solids reduction (65.91 ± 1.53% vs. 28.53 ± 2.29%) compared with negative control, the feasibility and efficiency of present FBRT providing a promising in-situ disposal strategy for rapid reduction of oily food waste.
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| http://dx.doi.org/10.1016/j.biortech.2021.125635 | DOI Listing |
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