Work

The Application of an Effective Microbial Fermentation Product as a Biostimulant in the Bioremediation of Soil Contaminated with Benzo[a]pyrene

Year: 2025

Type: article

Abstract: The efficiency of polycyclic aromatic hydrocarbon (PAH) removal by indigenous microorganisms is often suboptimal, resulting in constraints on its practical application. To enhance the degradation efficiency of benzo[a]pyrene (B[a]P) in contaminated soil, an effective microbial fermented product (EMF) was employed as a biostimulant. Our findings demonstrated that when 1‱ or 1‰ (w/w) of the EMF was applied to the B[a]P-contaminated soil for 21 days, the biodegradation rates of the B[a]P were 59.37% and 100%, respectively, which is much higher than that by the natural attenuation (18.79%). The abundance of the 16S rDNA and PAH-RHDα GP genes were both significantly increased due to the applied EMF. Soil enzymatic activities were also affected, to different degrees, by the addition of the EMF. The diversity, composition, and functionality of the soil microbial community also changed to varying degrees. These results suggest that the use of the EMF to enhance the biodegradation of the B[a]P in soil may hold promise for the microbial remediation of PAH-contaminated soils.

Source: Fermentation

DOI: 10.3390/fermentation11020076

Authors: Xin Xie, Tangbing Cui

Institution: South China University of Technology

Language: English

Topic: Microbial bioremediation and biosurfactants

Subfield: Pollution

Field: Environmental Science

Domain: Physical Sciences

SDG: Life on land

Open Access status: gold

Estimated APC paid: $2,534