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Effect of remediation techniques on petroleum removal from and on biological activity of a drought-stressed Kastanozem soil

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Abstract

Many petroleum extraction and refinement plants are located in arid climates. Therefore, the remediation of petroleum-polluted soils is complicated by the low moisture conditions. We ran a 70-day experiment to test the efficacy of various combining of remediation treatments with sorghum, yellow medick, and biochar to remove petroleum from and change the biological activity of Kastanozem, a soil typical of the dry steppes and semideserts of the temperate zone. At normal moisture, the maximum petroleum-degradation rate (40%) was obtained with sorghum–biochar. At low moisture, the petroleum-degradation rate was 22 and 30% with yellow medick alone and with yellow medick − sorghum, respectively. Biochar and the biochar-plant interaction had little effect on soil remediation. Both plants promoted the numbers of soil microbes in their rhizosphere: yellow medick promoted mostly hydrocarbon-oxidizing microorganisms, whereas sorghum promoted both hydrocarbon-oxidizing and total heterotrophic microorganisms. Low moisture did not limit microbial development. In the rhizosphere of sorghum, dehydrogenase and urease activities were maximal at normal moisture, whereas in the rhizosphere of yellow medick, they were maximal at low moisture. Peroxidase activity was promoted by the plants in unpolluted soil and was close to the control values in polluted soil. Biochar and the biochar-plant interaction did not noticeably affect the biological activity of the soil.

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Data availability

Dataset used in the study can be obtained by a reasonable request from the corresponding author Dr. Ekaterina Dubrovskaya.

Abbreviations

CHMs:

Culturable heterotrophic microorganisms

HOMs:

Hydrocarbon-oxidizing microorganisms

CFU:

Colony-forming units

UA:

Soil urease activity

DA:

Soil dehydrogenase activity

PA:

Soil peroxidase activity

S:

Sorghum

A:

Yellow medick

O:

Petroleum pollution

M:

Normal moisture

D:

Low moisture (drought conditions)

B:

Biochar

C:

Untreated control soil

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Funding

This research was carried out under research theme (no. 121031700141–7) and supported in part by grant from the Russian Foundation for Basic Research (project no. 18–29-05062\18).

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Authors and Affiliations

Authors

Contributions

Ekaterina Dubrovskaya: study conception and design, data collection, analysis and interpretation of results, draft manuscript preparation. Sergey Golubev: data collection, analysis and interpretation of results, writing—review and editing. Anna Muratova: data collection, analysis and interpretation of results, writing — review and editing. Natalia Pozdnyakova: data collection, analysis and interpretation of results. Anastasia Bondarenkova: data collection. Irina Sungurtseva: data collection. Leonid Panchenko: data collection. Olga Turkovskaya: funding acquisition, supervision.

Corresponding author

Correspondence to Ekaterina Dubrovskaya.

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The authors declare no competing interests.

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Responsible Editor: Zhihong Xu

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Dubrovskaya, E., Golubev, S., Muratova, A. et al. Effect of remediation techniques on petroleum removal from and on biological activity of a drought-stressed Kastanozem soil. Environ Sci Pollut Res 29, 84702–84713 (2022). https://doi.org/10.1007/s11356-022-21742-5

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  • DOI: https://doi.org/10.1007/s11356-022-21742-5

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