Succession of microbial communities with VOC changes during composting process

Abstract

The kitchen waste compost treatment of diesel contaminated soil has the advantages of good bioremediation effect and low treatment cost. However, through understanding the mechanism of microbial degradation of diesel, the disadvantage of biological treatment time in the composting process is too time-consuming. The research results showed that the evolution of microbial communities was affected by physicochemical parameters in the composting process. During the heating period, it was found that Lactobacillus sakei and Escherichia coli were acid producing bacteria. Pseudomonas putida GB-1 is a terpenoid producing bacterium. Bacillus sp. was found to be aldehyde and sulfide producing bacteria during high temperature composting. Brevibacillus borstenensis and Low G + C Gram positive bacteria are ammonia producing bacteria. The microbial degradation mechanism could be deduced according to the VOCs change in compost gas, and the strategies to promote the efficiency of biological treatment in the composting process were provided for reference.