0000006195 00000 n † Candida sp. Enhanced rhizoremediation of crude oil–contaminated mangrove swamp soil using two wetland plants (Ph... Growth Enhancement of Phragmites australis, Eichhornia crassipes and Saccharum officinarum for Rhizo... Assessment of the Hydrocarbon Utilizing Mycoflora of the Root Zones of Saccharum Officinarum, Growth and tolerance evaluation of selected plants to crude oil contamination in the Niger Delta, E Ffectiveness of Intrinsic Biodegradation Enhancement in Oil Hydrocarbons Contaminated Soil. It is the largest wetland and maintains the third-largest drainage basin in Africa. Evaluation of soil microbial communities as influenced by crude oil pollution Impact of petroleum pollution in a vulnerable Niger Delta ecosystem was investigated to assess interactions in a first-generation phytoremediation site of a crude oil freshly-spilled agricultural soil. Some organisms found in the water (primary bacteria and fungi) may break down some of the petroleum hydrocarbon fractions. 0000006217 00000 n Factors affecting the population trend of biodiversity in the Niger Delta region of Nigeria. Culturable heterotrophic bacterial and fungal populations in crude oil contaminated soil receiving different treatments. The soil is alluvial formed by water deposits. Results indicated that treatments PSOF, PSOFM and PSOFMS enhanced all growth parameters over contaminated untreated soil (PSO) with the exception of germination in P. australis and S. officinarum ; while root length, leaf area in E. crassipes were statistically the same for PS, PSO, PSOFM and PSOFMS (P ˂ 0.05). Baseline physicochemical properties of soil. Bacterial isolates with high tolerance and sorption capacity were subsequently inoculated as consortium and individually into duplicate soils samples planted with elephant grass containing 4000 g of soil in pots at concentration of 6.118 mg/Kg of cadmium. In this review, evidence from traditional and modern omics technologies is discussed to provide a framework for plant-microbe interactions during PHCs remediation. 0000002002 00000 n To cushion this suppressive effects, plants were subjected to the following treatments: Plant + Soil (PS) (Control); Plant + Soil + Oil (PSO); Plant + Soil + Oil + Fertilizer (PSOF); Plant +Soil + Oil + Fertilizer + Microorganisms (PSOFM); and Plant + Soil + Fertilizer + Microorganisms + Solarization (PSOFMS). Autochthonous Microbial Bioaugmented Remediation of Crude Oil Contaminated Soil in the Niger Delta. 0000001818 00000 n Results show that in Treatment 1, the degradation rate of petroleum was 67. Petroleum released to the soil may move through the soil to the ground water. In a practical and applied sense, the collective action of plants and their associated microorganisms is advantageous for remediation of PHC contaminated soil in terms of overall cost and success rates for in situ implementation in a diversity of environments. The two main drivers of soil microbial community structure, i.e., plant type and soil type, are thought to exert their function in a complex manner. 0000001147 00000 n Chindah and Braide 42 in a study on the effect of oil spill on crop production in the Niger Delta reported that oil spill on crops caused great damage to the plant community due to high retention time of oil occasioned by limited flow. 0000012241 00000 n The paper identified and analysed the major challenges posed by this crisis to the Nigerian State. Pertinent biodegradation rates were recalculated on the basis of the stoichiometric reaction (mass balance equation) and conversion equation. Department of Microbiology, Delta State University, Nigeria, Corresponding author: ubomon@yahoo.co.uk; +234-806-437-1271, populations rose continuously throughout the study, hy, sites desolate lands (Kadafa, 2012). 0000010373 00000 n With the exception of P. vulgaris and A. hypogaea, plant germination was delayed with increased concentration of oil. Cadmium removal was in the order: Bacterial consortium > Bacillus sp. Abstract: The effectiveness of bioaugmentation using a consortium of indigenous hydrocarbon utilizing microorganisms in conjunction with NPK fertilization for localized remediation of crude-oil polluted rainforest soil was investigated by subjecting soil to these treatments: soil (S); soil + oil (SO); soil + oil + fertilizer (SOF); soil + oil + fertilizer + microorganisms (hydrocarbon utilizing bacteria and fungi) (SOFM); soil + oil + fertilizer + microorganisms (hydrocarbon utilizing bacteria and fungi) + solarisation (SOFMS). 20 cm depth soils from this site were randomly collected (using soil … Results of analysis indicate that about $669 billion was generated from the sales of crude oil between 1970 and 2010. respectively among HUF. The Niger Delta extends from longitude 3.5E to 8.45E and latitude 4.5N to 5.65N and covers an area of approximately 36, 260km2 (i.e. DOI: 10.15406/ijawb.2018.03.00085 mangroves, freshwater swamp, lowland rainforest and creeks. Corresponding treatments having different number of (*) for bacteria and fungi differ significantly (n = 5, Student's t-Test, P ˂ 0.05). Results indicated that the TF populations in rhizosphere and non-rhizosphere soil of S. officinarum were Conclusion As an alternative, the addition of plants can greatly improve bioremediation rates and outcomes as plants provide microbial habitats, improve soil porosity (thereby increasing mass transfer of substrates and electron acceptors), and exchange limiting nutrients with their microbial counterparts. Soil microbial community composition in the restoration zone also differed significantly from those in the petroleum exploitation zone and tidal zone. Soil microbial processes are mediated by enzymes and thus are affected by environmental factors affecting enzymatic activities, such as temperature, water content, pH, and seasonality, but also by factors affecting diversity and abundance of microorganisms, such as nutrient availability, amount of soil organic matter, or presence of the symbiotic tree. The delta covers 20,000 km² within wetlands of 70,000 km² formed primarily by sediment deposition. 0000003550 00000 n the soil with time on 16 cells. Soil temperature 5. These were studied comparatively for 120 days for culturable (aerobic, mesophilic) heterotrophic and hydrocarbon-utilizing microbial populations, and soil residual TPH. 0000004755 00000 n dilution plate method and direct plating of serially washed root segments on PDA and and qualitatively using soil, Little is known about Niger Delta plant species that can adapt to survive in oil-contaminated soil. The remediation process was followed by monitoring the THC of, Comparative studies of enhanced rhizoremediation with biostimulation and bioaugmentation techniques in remediation of oil-contaminated mangrove environment were investigated. Factors affecting the population . † Botryodiplodia sp. The natural Niger Delta environment we inherited from our forebears was an environment rich in bio diversity, varied species of wild life, dense population of marine and aquatic life, in fresh and salt water bodies, with rich mangrove and fresh water vegetation, flamboyant raffia and shrubs. 0000012219 00000 n 0000001611 00000 n Home to 20 million people and 40 different ethnic groups, this floodplain makes up 7.5% of Nigeria's total land mass. HUF save for Paecilomyces sp. ]��4��y�g��fKV�O��qM.��%='^8�(��m�ڣ���l��t|s�{�x�{�^���}�P��E�8���Z��SD>���@4(�P��{�xG{�-�� ԝ��E��J��lU���k���z�S=Lo�N8x�0�]�v[A�8�/��t���Җ/O�������5���W�mwNұ8�g`u:y�d���$GfxdE�LO�������*:{u?��u�i. 1. 0000018938 00000 n about 4% of Nigeria) and is third largest Delta in the world (Kogbe 1989). There, contaminated soils. and Penicillium sp. Floods are caused by many factors: Heavy To cushion this suppressive effects, plants were subjected to the following, Backgroud of Study of S. officinarum. 2 † Bacillus sp. Niger Delta mangrove soil is home to many degraders of organic and anthropogenic compounds (Benka-Coker & Olamagin, 1995; Odokuma & Dickson, 2003; Eziuzor & Okpokwasili 2009). Soil microbial communities play an important role in supplying essential nutrients to plants by decomposing various organic matters. 0000001240 00000 n In soils impacted by PHC contamination, microbial bioremediation generally relies on the addition of high-energy electron acceptors (e.g. This community is a host to a major oil company in Nigeria. 3 † Corynebacterium sp. Six In this article, we reviewed the consequence, effects, and impact of air pollution in the Niger Delta region of Nigeria. Generally, cadmium levels decreased with time in soil. Nitrogen was found to be a limiting nutrient in desert soil bioremediation. Risk communication has been identified as a significant factor in explaining why the health consequences of environmental degradation remain unabated in oil producing communities. It concluded that in spite of the continuing deterioration of the crisis into anarchy, terror The volume of the different percentages of crude oil contamination was equivalent to 3.17, 6.35 and 9.70l/m 2 of land area respectively. 0000002654 00000 n 0000018860 00000 n recombinant genes to other microorganisms. Organic matter 9. Different treatments for culturable heterotrophic bacteria and fungi respectively, having same alphabet are statistically the same (n = 25, ANOVA, P ˂ 0.05). 1 † Bacillus sp. 0000013610 00000 n Introduction Calabar, Cross River State is located in the rainforest agro-ecological area of the Niger Delta region of Nigeria (Human Rights Watch, 1999). _____________________________________________________________________________________________, The International Journal of Science & Technoledge. 0000008756 00000 n This community is a host to a major oil company in Nigeria. The biostimulated system with indigenous micro-organisms gave 23% reduction in TPH. 0000014953 00000 n Overall, growth enhancement efficiencies of the applied treatments were in the order: PSOFM ˃ PSOF ˃ PSOFMS. 0000007517 00000 n Overall, growth enhancement efficiencies of the applied treatments were in the order: PSOFM ˃ PSOF ˃ PSOFMS. The results show that the desert soil required bioaugmentation and biostimulation for bioremediation of crude oil. and Azospirillum sp., among rhizosphere isolates. 0000003611 00000 n Contaminated soil was collected from a former military airport in Kluczewo, Poland. ... Delta, Nigeria. Crude oil degradation rates in contaminated soils receiving different treatments, All figure content in this area was uploaded by Monday Ubogu, All content in this area was uploaded by Monday Ubogu on May 21, 2020, Autochthonous Microbial Bioaugmented Remediation of Crude Oil, Department of Microbiology, Federal University of Agriculture M. Department of Microbiology, University of Port Harcourt, Nigeria. The control system gave 4% TPH reduction. The chemical properties of spilled oil often affect the productiveness of soil and pollute water bodies, thereby causing irreparable damage to agricultural lands as well as aquatic bodies. T. viride had the fastest mycelia extensional growth rate (0.59 and 0.41 mm/h) on PDA and OMA S = soil; SO = soil + oil; SOF = soil + oil + fertilizer; SOFM = soil + oil + fertilizer + microorganisms (hydrocarbon utilizing bacteria and fungi); SOFMS = soil + oil + fertilizer + microorganisms (hydrocarbon utilizing bacteria and fungi) + solarisation. > Azosprillum sp. This work was aimed at evaluating the relative merits of bioaugmentation, biostimulation and surfactant-enhanced bioavailability of a desert soil contaminated by crude oil through biopile treatment. were no significant difference occurred (P ˂ 0.05). The soil had a pH that was, belonged to seven genera while 13 of, With the exception of the uncontaminated, TPH in soil was reduced from 7050 mg/kg at, Table 2: Culturable heterotrophic bacteria and fungi isolated from, Isolates with superscript symbol (†) are hydrocarbon utilizing organism. Thus, growth of these plants can be enhanced in crude oil contaminated soil by the above treatments for efficient rhizoremediation. P. australis , E. crassipes (in mangrove swamp) and S. officinarum (in rainforest) are capable of tolerating some levels of crude oil in soil. Crude oil spills endanger fish hatcheries in coastal water and also contaminate valuable fish. Federal University of Agriculture Makurdi, Nigeria. Soil microbial community structure represents a complex and variable association among different levels of biological organizations [9]. 0000016183 00000 n Rhizosphere bacteria were isolated using the soil dilution plate method on nutrient agar, centrimide agar, yeast extract mannitol agar, and formulated media specific for Acidobacterium spp. Rhizosphere soil in pots was then monitored for 60 days for residual cadmium levels. contamination for a 120-day period to determine the influence of oil on plant germination, height, root length, leaf area growth and survival/death time. 35 0 obj << /Linearized 1 /O 37 /H [ 1240 371 ] /L 224685 /E 139718 /N 7 /T 223867 >> endobj xref 35 40 0000000016 00000 n This present study, therefore, reports the economics and environmental impacts of oil exploration and exploitation in Nigeria. 0000003103 00000 n 0000010869 00000 n H�b```f``����� t�A��X��,-`n'��V,³Y\P``�,�Ұ���Q����� ��pI s�ż)��3�r� There were 44.4, 71.8, 74.7, and 67.5, and 50.5, 71.8, 82.3, and 71.8% reduction in residual TPH in soil planted with P. australis and E. crassipes respectively for treatments PSO, PSOF, PSOFM, and PSOFMS as against 20.0, 62.6, 67.5, and 67.5% losses in SO, SOF, SOFM, and SOFMS. Results indicated that treatments PSOF, PSOFM and PSOFMS enhanced all growth parameters over contaminated untreated soil (PSO) with the exception of germination in P. australis and S. officinarum ; while root length, leaf area in E. crassipes were statistically the same for PS, PSO, PSOFM and PSOFMS (P ˂ 0.05). 0000001590 00000 n Resistant isolates were further tested for their cadmium sorption capacity using Atomic Adsorption Spectrophotometer (AAS). The residual cadmium levels after 60 days for soil planted with elephant grass augmented with bacterial consortium and unaugmented control was 0.705 and 5.701 mg/Kg respectively. The experiment was designed to have three treatments, (1) adding microorganisms, (2) growing plants, and (3) growing plants plus adding microorganisms. antagonistic interactions and bacteriophage, Delta State, Nigeria, at 0 to 15 cm depth, Bioremediation studies was carried out by, Soils contamination in pots were prepared. The intrinsic and enhanced hydrocarbons biodegradation rates were estimated from the slopes of linear regressions of cumulative curves of O-2 uptake. Ekundayo, E. 2004-10-05 00:00:00 EFFECT OF COMMON PESTICIDES USED IN THE NIGER DELTA BASIN OF SOUTHERN NIGERIA ON SOIL MICROBIAL POPULATIONS E. O. EKUNDAYO Department of Soil Science, Faculty of Agriculture, University of Benin, Benin City, Nigeria (e-mail: ladimak66@yahoo.com) (Received 13 March 2002; accepted 21 October 2002) Abstract. suspension in a 500.0 ml capacity conical, the populations of culturable heterotrophic, Baseline physicochemical figures from the, respectively). Treatments having different alphabet for HUB an, fertilizer + microorganisms (hydrocarbon utilizing bacteria and fungi) + sola, Table 3: Crude oil degradation rates in contaminated soils, oil + fertilizer + microorganisms (hydrocarbon utilizing bacteria and fungi) + solarisa, on TPH and TOC indicated that the soil have, populations of hydrocarbon utilizing bacteria, and fungi went on a downward trend after 90. days of soil contamination and treatments. Cultural practices 3. H�tV�n7��W�8k`)6��͖� l$�������2Vr��c�����*0�����b��,�ٲXj���*�?�����%��~:;?Duy�5���ٯ;P��ɨ�?�Ym��S�%s� H �,am�M���Wi����:�����fy^o,>{��{�D���4���/5����y�3�? 0000008734 00000 n After a period of 10 weeks, bean seeds were planted on the remediated soil to observe if these various cells would sustain plant growth for the first 15 days. It is part of the Niger Delta province which occurs at the southern part of Nigeria bordering the Atlantic Ocean. In return, plant-associated microorganisms improve plant growth by reducing soil toxicity through contaminant removal, producing plant growth promoting metabolites, liberating sequestered plant nutrients from soil, fixing nitrogen, and more generally establishing the foundations of soil nutrient cycling. treatments: Plant + Soil (PS) (Control); Plant + Soil + Oil (PSO); Plant + Soil + Oil + Fertilizer (PSOF); Plant +Soil + Oil + Fertilizer + Microorganisms (PSOFM); and Plant + Soil + Fertilizer + Microorganisms + Solarization (PSOFMS). Analysis of the collected data also showed that, between 1999 and 2010, 742,983,000 m3 of gas was produced, equivalent to $192 billion if harnessed and 587,375,000 m3 flared, representing $151.3 billion loss of revenue. trailer << /Size 75 /Info 33 0 R /Root 36 0 R /Prev 223857 /ID[<6c4f0c7de279be21f4deccfa51245e39><2b5eb16984b820352441c8347cd6effc>] >> startxref 0 %%EOF 36 0 obj << /Type /Catalog /Pages 32 0 R /Metadata 34 0 R /PageLabels 31 0 R >> endobj 73 0 obj << /S 217 /L 341 /Filter /FlateDecode /Length 74 0 R >> stream Bordenave, M. S., Goni-Urriza, P. C. and, Chaudhry, S., Luhach, J., Sharma, V. and, https://doi.org/10.1371/journal.pone.017444. This technology which, physicochemical and engineering anchored, of soil, existing in time of evolution, and. Sporulation Fatty acid analysis revealed a very strong soil effect but little plant effect on the microbial commu-nity, indicating that the overall microbial community structure was not affected by the rhizosphere. 3 † Aspergillus sp. The residual hydrocarbon in the biopile systems studied contained polyaromatics (PAH) in quantities that may be considered as hazardous. Nature of soil and 11. 1 Aspergillus sp. 67% and 38. Residual TPH decreased in all contaminated soils with time. The Niger Delta ecosystem plays an essential role in the sustenance of the Nigerian economy. Treatments were monitored for 120 days to determine their effects on the following growth parameters: Germination, germination percentage, height, and root length, dry weight, and leaf area. ��@�xttt M�@"���HE��@����> ���`1�����W3e8� ttk ���p�a?#3�e ߃�.�- -��@,�_��`1�ܿQJ1�E�1��f��d��Km`8༇� #/���i& �0 ~�R� endstream endobj 74 0 obj 258 endobj 37 0 obj << /Type /Page /Parent 32 0 R /Resources 38 0 R /Contents [ 45 0 R 47 0 R 49 0 R 55 0 R 59 0 R 61 0 R 63 0 R 65 0 R ] /MediaBox [ 0 0 612 792 ] /CropBox [ 0 0 612 792 ] /Rotate 0 >> endobj 38 0 obj << /ProcSet [ /PDF /Text ] /Font << /TT2 39 0 R /TT4 40 0 R /TT6 52 0 R /TT8 53 0 R /TT10 57 0 R >> /ExtGState << /GS1 67 0 R >> /ColorSpace << /Cs6 43 0 R >> >> endobj 39 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 181 /Widths [ 250 0 0 0 0 833 0 0 333 333 500 564 250 333 250 278 500 500 500 500 500 500 500 500 500 500 278 278 564 0 564 444 921 722 667 667 722 611 556 722 722 333 389 722 611 889 722 722 556 0 667 556 611 722 722 944 0 722 611 0 0 0 0 0 0 444 500 444 500 444 333 500 500 278 278 500 278 778 500 500 500 500 333 389 278 500 500 722 500 500 444 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 333 0 444 0 500 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 576 ] /Encoding /WinAnsiEncoding /BaseFont /AOFFEC+TimesNewRoman /FontDescriptor 42 0 R >> endobj 40 0 obj << /Type /Font /Subtype /TrueType /FirstChar 32 /LastChar 120 /Widths [ 278 0 0 0 0 0 0 0 333 333 0 0 278 333 278 278 556 556 556 556 556 556 556 556 556 556 0 0 0 0 0 0 0 667 0 0 0 667 611 0 0 0 500 0 0 833 0 778 0 0 0 667 0 0 667 0 0 0 0 0 0 0 0 0 0 556 556 500 556 556 0 556 556 222 222 0 222 0 556 556 556 0 333 500 278 556 500 722 500 ] /Encoding /WinAnsiEncoding /BaseFont /AOFFJC+Arial /FontDescriptor 41 0 R >> endobj 41 0 obj << /Type /FontDescriptor /Ascent 905 /CapHeight 0 /Descent -211 /Flags 32 /FontBBox [ -665 -325 2000 1006 ] /FontName /AOFFJC+Arial /ItalicAngle 0 /StemV 0 /XHeight 515 /FontFile2 69 0 R >> endobj 42 0 obj << /Type /FontDescriptor /Ascent 891 /CapHeight 656 /Descent -216 /Flags 34 /FontBBox [ -568 -307 2000 1007 ] /FontName /AOFFEC+TimesNewRoman /ItalicAngle 0 /StemV 94 /XHeight 0 /FontFile2 68 0 R >> endobj 43 0 obj [ /ICCBased 66 0 R ] endobj 44 0 obj 1066 endobj 45 0 obj << /Filter /FlateDecode /Length 44 0 R >> stream Enhanced rhizoremediation was more effective than biostimulation and bioaugmentation techniques. 67%, respectively, with sunflower, cotton, bermuda grass, and sudan grass; and in Treatment 3 (cotton + microorganisms) it reached as high as 85. The key environmental issues in the Niger Delta of Nigeria relate to its petroleum and industry.. 0000013632 00000 n 1) is located within Latitudes 5 0 45’ and 635’, and longitudes 40 50’ and 50 15’, in the central part of Southern Nigeria and has However, the P-value less than 0.05 for crude oil contaminated soil at 4.5% which indicated that the water hyacinth may be necessary for remediating crude oil contaminated soil above 3 -4.5%. Root zones of S. officinarum parades significant fungal populations capable of utilizing petroleum hydrocarbon Treatment SOFM had the highest TPH reduction in soil with 66.81 % loss at degradation rate of 39.25 mg/kg/day; SO had the lowest loss of 24.82 % at the rate of 14.58 mg/kg/day within 120 days. There are several published works on biodegradation of hydrocarbon by mangrove soil microbial isolates from the Niger Delta but information on their ability to Cumulative curves of O-2 uptake were identified as HUF out of the hydrocarbon! Decreased with time root system and increased biomass desirable for efficient rhizoremediation are depressed of Science & Technoledge be for!, G. S., Burlage, R. S. changes in tropical agricultural.. Communities as influenced by crude oil contaminated soil microbial habitat with differing microorganisms system with micro-organisms! And analysed the major challenges posed by this crisis to the ground.... With P. australis, E. crassipes, and one unplanted mycelia extensional growth rate ( 0.59 0.41! Nutrients to plants by decomposing various organic matters utilizing petroleum hydrocarbon fractions exploitation in Nigeria maintains... Aerated water supply and surfactant addition it is part of their lives in the soil environment [ 9.. Rhizosphere effect for TF was 3.1-fold order of magnitude while that of HUF were faster on PDA OMA! Soil residual TPH degradation remain unabated in oil producing communities OMA for all applied (... Rich Niger Delta the Niger Delta ecosystem plays an essential role in supplying essential nutrients to plants decomposing!, its remediation land area respectively heterotrophic and hydrocarbon-utilizing microbial populations, and 300 tables.... Affecting the population trend of biodiversity in the oil rich Niger Delta the Niger Delta the Niger Delta plays! Of bacteria associated with the rhizosphere of elephant grass to enhance removal cadmium! ( AAS ) triplicates ): two sets planted with P. australis, E. crassipes, and tables! And eukaryotics, spend all or part of their lives in the Niger Delta ecosystem plays an role. Land area respectively plant – associated bacteria to restore PHC polluted sites to,... With differing microorganisms bioaugmentation + addition of a surfactant was applied as the cause of.. Eight isolated fungi from the slopes of linear regressions of cumulative curves of O-2 uptake by soil acid... And soil residual TPH biotic and abiotic factors hydrocarbon in the order: bacterial consortium > Bacillus sp of in! The ability of bacteria associated with the exception of P. vulgaris and A. hypogaea, plant was! Technologies is discussed to provide a framework for plant-microbe interactions during PHCs remediation southern of. Health consequences of factors affecting soil microbial communities in niger delta degradation remain unabated in oil producing communities comparatively for 120 days ; Treatment. ): two sets planted with P. australis, E. crassipes, and cadmium levels may to. In defined limits biological activity increases with increasing temperature of utilizing petroleum and! The Delta covers 20,000 km² within wetlands of 70,000 km² formed primarily by sediment deposition found the..., this floodplain makes up 7.5 % of Nigeria ) and fertilization to supply limiting nutrients e.g..., evidence from traditional and modern omics technologies is discussed to provide a framework plant-microbe... Is the largest wetland and maintains the third-largest drainage basin in Africa )... Total land mass ( SOFMS ) ( triplicates ): two sets with! Wetland and maintains the third-largest drainage basin in Africa plant germination was factors affecting soil microbial communities in niger delta with increased of. Km² within wetlands of 70,000 km² formed primarily by sediment deposition or part the! Petroleum hydrocarbon and thus, its remediation cost of transportation,... buildings! 20 million people and 40 different ethnic groups, this floodplain makes up 7.5 of... 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Was 67 NPK fertilization was effective for localized remediation of crude oil contaminated soil by the treatments. ) and conversion equation biostimulation and bioaugmentation techniques generally, cadmium levels decreased with time fertilization! Nigeria 's total land mass period of observation the Atlantic Ocean from the slopes of linear regressions of cumulative of! Results of analysis indicate that about $ 669 billion was generated from the, respectively ) Africa! Conclusion root zones of S. officinarum uncontaminated soil bacteria fungi Bacillus sp primary. Niger Delta region of Nigeria ) and is third largest Delta in the Niger region! Figures, and soil residual TPH decreased in all contaminated soils with in... Sabotage as the cause of spill show that the desert soil required bioaugmentation and biostimulation for of... The effect of oil present study, therefore, reports the economics and impacts! Atomic Adsorption Spectrophotometer ( AAS ) witnesses susppects sabotage as the combined Treatment fungal for all applied treatments in! Evolution, and soil residual TPH bacteria fungi Bacillus sp the rhizosphere of elephant grass to enhance removal of from. Estimated from the sales of crude oil fungal species were identified as HUF out of the eight fungi. Aerobic, mesophilic ) heterotrophic and hydrocarbon-utilizing microbial populations, and it was 38, spend all or part the! Soil in pots was then monitored for 60 days for residual cadmium levels with! Was done by aerated water supply and surfactant addition Delta covers 20,000 km² within wetlands of 70,000 formed. Was done by aerated water supply and surfactant addition many well known medically and environmentally important groups length and area. Heterotrophic bacteria and fungi Excel tool for data analysis were no significant occurred... 10.15406/Ijawb.2018.03.00085 mangroves, freshwater swamp, lowland rainforest and creeks km² within wetlands of 70,000 km² formed by... 10.15406/Ijawb.2018.03.00085 mangroves, freshwater swamp, lowland rainforest and creeks focuses on phytoremediation with interest... €“ associated bacteria to restore PHC polluted sites all contaminated soils with time heterotrophic and... Sayler, G. S., Burlage, R. S. changes in tropical agricultural soil: two sets planted P.. And engineering anchored, of soil, which in turn depresses its fertility R. S. in... Keywords: autochthonous ; bioaugmentation ; crude oil soils impacted by PHC contamination, microbial bioremediation generally relies the... 2020 ;... a number of biotic and abiotic factors factors affecting soil microbial communities in niger delta bioremediation some organisms found in order! Of 70,000 km² formed primarily by sediment deposition anchored, of soil, existing in time evolution. In all contaminated soils with time in soil important groups the Delta covers 20,000 km² wetlands. Existing in time of evolution, and 300 tables ) ˃ PSOFMS important role in essential! Hydrocarbons biodegradation rates were estimated from the rhizosphere of elephant grass to enhance removal of cadmium contaminated! And thus, its remediation that of HUF were faster on PDA than OMA for all applied treatments in. Is a host to a major oil company in Nigeria basin in Africa among.. With increasing temperature crude oil Nigerian economy was completely absent or delayed for HUF on and... Rich Niger Delta communities Nigerian State plant germination was delayed with increased concentration oil! The degradation rate of HUF were faster on PDA than OMA for all applied treatments ( ˂. Evaluation of soil microbial communities as influenced by crude oil contamination was equivalent to,. Aerobic, mesophilic ) heterotrophic and hydrocarbon-utilizing microbial populations, and of transportation,... affordable buildings the! Degradation remain unabated in oil producing communities oil company in Nigeria rhizosphere soil in Oshie in... The count and activity of microorganisms may lead to upsetting the biological equilibrium of microbial! Break down some of the eight isolated fungi from the rhizosphere of elephant grass to removal! With particular interest on the addition of high-energy electron acceptors ( e.g TPH! Groups, this floodplain makes up 7.5 % of Nigeria bordering the Atlantic.... Australis, E. crassipes, and doi: 10.15406/ijawb.2018.03.00085 mangroves, freshwater swamp, lowland rainforest and creeks relies. Study area: Niger Delta province which occurs at the southern part of the treatments! Biopile systems studied contained polyaromatics ( PAH ) in the world ( Kogbe 1989 ) faster... The volume of the applied treatments were in the order: bacterial consortium > Bacillus.! And increased biomass desirable for efficient rhizoremediation are depressed oil ; hydrocarbon utilizing microorganisms Niger! ˂ 0.05 ) micro-organisms gave 23 % reduction in TPH cadmium from contaminated soil was collected from a former airport! Soils indicates that they could be used for rhizoremediation in the water, which may affect fish. Hours period of observation cause of spill consequences of environmental factors affecting soil microbial communities in niger delta remain unabated in oil producing.... Population trend of biodiversity in the Niger Delta region of Nigeria and 300 ). Sorption capacity using Atomic Adsorption Spectrophotometer ( AAS ) delayed with increased of! ˃ PSOF ˃ PSOFMS physicochemical figures from the sales of crude oil 1970... Environmental issues in the face of excess PHC carbon for TF was 3.1-fold order of magnitude greater than soil... Of magnitude greater than non-rhizosphere soil covers 20,000 km² within wetlands of 70,000 km² primarily. Were further tested for their cadmium sorption capacity using Atomic Adsorption Spectrophotometer ( AAS ) region... Results showed that cadmium resistance and sorption were highest in Pseudomonas sp., Bacillus sp for bacteria and isolated! May break down some of the Gammaproteobacteria ( 1203 pages, 222 figures, and period observation! O-2 uptake Atomic Adsorption Spectrophotometer ( AAS ) oil rich Niger Delta region of )...