Bioremediation Of Soil Of The Kola Peninsula (Murmansk Region) Contaminated With Diesel Fuel

Abstract

This work focuses on the creation and use of associations of hydrocarbon-oxidizing microorganisms. Bioremediation of soils with the help of mixed cultural and associations of microorganisms provides wider adaptive possibilities than individual species. This is especially important in conditions of short northern summer. The results of field experiments showed that microbial associations based on indigenous microorganisms (bacteria Pseudomonas fluorescens, P. putida, P. baetica, Microbacterium paraoxydans and fungi Penicillium commune, P. canescens st. 1, P. simplicissimum st. 1) with mineral fertilizers reduced the content of total petroleum hydrocarbons in the Hortic Arthrosol soil of the Kola Peninsula by 82% over 120 days. Also, the microbial associations with mineral fertilizers had a positive effect on the physical properties of the soil, increasing its humidity. The bacterial-fungi associations changed the number, abundance and structure of the indigenous community of microorganisms. Penicillium canescens, which was included in the composition of fungi association, became dominant. During the rapid decomposition of hydrocarbons are released to the soil toxic intermediates or metabolites of the microbial oxidation of hydrocarbons. Hydrocarbon oxidizing microfungi suppressed the germination of test plant seeds to one degree or another. Penicillium commune fungal metabolites inhibited seed germination only by 29% for Lepidium sativum L. and 24% for Triticum aestivum L. This species can be used for bioremediation of petroleum contaminated soils.

Biosurfactant-Assisted Phytoremediation of Diesel-Contaminated Soil by Three Different Legume Species

“…Even low concentrations of diesel can harm plants and soil microorganisms. This is not solely due to the direct toxicity of diesel but also due to the toxic byproducts produced during the microbial breakdown of intermediate hydrocarbons [52][53][54]. When found in soil, diesel can impede the proper functioning of plant cells, resulting in inhibited growth, discolouration, and even death [55].…”

Enzymatic Assessment of the State of Oil-Contaminated Soils in the South of Russia after Bioremediation

“…The introduction of Baikal EM-1 helps to reduce the pH < 7.6-7.7 and increase the RP of Haplic Arenosols, which reduces the rate of oil decomposition. It is obvious that the process of restoring the soil structure disturbed by oil pollution depends on the soil texture composition [35]. Light loamy soils such as Haplic Arenosols contain much less clay and silt in their composition than clay loam soils.…”

Fungal assisted bio‐treatment of environmental pollutants with comprehensive emphasis on noxious heavy metals: Recent updates

“…Better performance was shown by the fungal consortium in the biodegradation of n‐alkanes in comparison to the polycyclic aromatic hydrocarbons (El‐Aziz et al, 2021). Results of Korneykova et al (2021) showed that the total petroleum hydrocarbons content was reduced by 82% over 120 days by indigenous microorganisms based microbial associations (bacteria Pseudomonas fluorescens , P. baetica , P. putida , Microbacterium paraoxydans , and fungi Penicillium commune , P. simplicissimum st. 1, and P. canescens st. 1) with mineral fertilizers. Al‐Hawash et al (2019) obtained Aspergillus sp .…”