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From Crisis to Recovery: Addressing Hydrocarbon Pollution in Niger Delta Soils Treated with Pleurotus ostreatus and Eisenia fitida

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Open Journal of Yangtze Oil and Gas 2025年第1期10卷 1-29页

作者： Gift Evans Fubara Dokuboba Amachree Ilemi Jennifer Soberekon Esther Omone Akhigbe Digha Opaminola Nicholas akayinaboderi augustus eli Enyinnaya Okoro Igoniama Esau Gamage Ayibatonyo Markson Nathaniel Morufu Olalekan Raimi Department of Biology Faculty of Sciences Federal University Otuoke Bayelsa State Nigeria Department of Fisheries and Aquatic Environment Faculty of Agriculture Rivers State University Nkpolu-Oroworukwo Port Harcourt Rivers State Nigeria Department of Environmental Management and Toxicology Faculty of Sciences Federal University Otuoke Bayelsa State Nigeria

Rationale: The contamination of soil with crude oil poses significant environmental and ecological threats. Bioremediation, particularly through the use of organisms like Pleurotus ostreatus (mushroom) and Eisenia fetida (earthworm), has emerged as a promising approach to mitigate crude oil pollution. Understanding the effectiveness of these organisms in reducing hydrocarbon levels in contaminated soil is crucial for devising sustainable remediation strategies. Objectives: This study aimed to evaluate the efficacy of Pleurotus ostreatus and Eisenia fetida in remediating crude oil-polluted soil. Specifically, it sought to assess the hydrocarbon profiles in soil treated with these organisms across varying concentrations of crude oil pollution. Method: Crude oil concentration levels ranging from 0% to 10% were applied to soil samples alongside control treatments, including soil only, soil with earthworms, and soil with mushrooms. Each treatment was replicated five times using a randomized complete block design. Standard methods were employed to determine the hydrocarbon contents of the soil. Results: The results indicated a significant increase (P Pleurotus ostreatus and Eisenia fetida exhibited noteworthy reductions in these hydrocarbon levels. At the three-month mark, mushrooms demonstrated a remarkable ability to reduce hydrocarbon content by 70% - 90% compared to the pollution treatment. In contrast, earthworms exhibited minimal potential for hydrocarbon reduction, particularly at both three and six-month intervals. For instance, TOC reduction reached a maximum of 96% with mushroom treatment and 85% with earthworm treatment at 5% crude oil pollution over six months. Conclusion: The findings highlight the effectiveness of Pleurotus ostreatus in significantly reducing hydrocarbon levels in crude oil-polluted soil compared to Eisenia fetida. Mushroom-treated soils consistently exhibited substantial reductions in TOC, TPH, TOG, PAH, and THC over the study period, sugge

关键词： Hydrocarbon Crude Oil Soil Pollution Remediation Pleurotus ostreatus Eisenia fitida Wetland Core Niger Delta

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