Published: Jan. 1, 2023

Petroleum-contaminated saline-alkali soils are severe environmental problems in the whole world. However, finding a comprehensive method for these petroleum-contaminated still needs to be improved. This study isolated petroleum-degrading strain (Acinetobacter sp. Y-1) from oily sludge. In order test influence factors on bioremediation of soils, we conducted six treatments pot trials, including control (CK), Y-1 (strain only), CCBC (biochar derived corn cobs), CC-MBC (corn cobs biochar modified by concentrated sulfuric acid), CN (Y-1 combined with CCBC) and CM CC-MBC). The results showed that had highest petroleum degradation rate (39.4 %), its ESP has significantly decreased efficiently achieving Na+ fixation regulating cations contaminated soil. Soil nutrients, such as SOC TN, compared CK, while DOC increased. Microbial community analysis indicated treatment diversity soil bacterial increasing proportion indigenous bacteria, i.e., Firmicutes Actinobacteriota, which positively correlate degrading. FAPROTAX further enriched many microorganisms related degrading petroleum, improving removal hazardous organic pollutants. summary, this great potential effect technology soils.

Language: Английский