Hydrocarbon Degradation In Poultry Droppings And Cassava Peels-Amended Typic Paleustults In Southeastern Nigeria

Abstract

This greenhouse study was aimed at determining the potentials of poultry droppings (PD) and cassava peels (CP) for nutrient-enhanced biodegradation of petroleum hydrocarbon (THC) in a well drained Typic Paleustults using the THC levels and degradation duration as remediation indices. The performance of the organic amendments was compared against the performance of NPK fertilizer. The soil was contaminated with crude oil at the rate of 50 t/ha, after which the soil amendments were applied in single and combined forms (25 t PD/ha + 25 t CP/ha, and 50 t PD/ha + 50 t CP/ha), with the control as 0 t/ha (without soil amendment). Soil samples were collected from the contaminated soils at 14, 45, 76, 131 and 201 days after the application of the amendments respectively. There were significant (P = 0.05) effects of the amendments and rates of application on the THC concentrations. A comparison of the effects of PD, CP, NKP fertilizer and PD + CP on the THC concentrations at 201 days showed decrease in the contaminant concentrations in the order: NPK fertilizer < PD < CP + PD < CP < Control. The percent THC degradation at 201 days for 50t CP and 100t CP were 23 % and 24 % respectively, while that of 50t PD and 100t PD were 34 % and 36 % respectively. For soils treated with NPK fertilizer and CP + PD, the percent THC degradation was 40 % and 41 % for 50t NPK and 100t NPK fertilizers respectively, and 26 % and 31 % for 25t CP + 25t PD and 50t CP + 50t PD respectively. The time required to completely degrade the THC in the soil followed the same trend. Although PD showed great potential for THC degradation, it will take less time to achieve 100 % degradation of THC in NPK fertilizeramended soil when compared with the other nutrient supplements.

Use of Oil Palm Bunch and Plantain Peel Extracts as Alternative Stimulants in Crude Oil Bioutilization by Species of &lt;i&gt;Bacillus&lt;/i&gt; and &lt;i&gt;Pseudomonas&lt;/i&gt;

“…These differences between Bacillus species and Pseudomonas species are significant at p > 0.05. The result agrees with an earlier report by Jidere and Akamigbo [18]. In their report they stated that approximately 51% crude oil bioutilization was obtained after 20 days of incubation by Bacillus strains (28A and 61B) in an organic nitrogenous source.…”

“…The study therefore affirmed that the presence and concentration of N 2 and P are critical in oil spill bioremediation campaign. Similar result was reported by Jidere and Akamigbo and Akamigbo and Jidere [18][19]. These authors stated that sufficient nitrogen and phosphorus are required to balance the available hydrocarbon in order for microbial growth and hydrocarbon reduction to occur.…”

Crude Oil Contaminant and Bio-remediation using Brewery Mash and Earthworm (Nsukkadrilus mbae.) a Consortium to Cleaning-up and Restoring Soil Fertility Potentials

“…The significant decrease in hydrocarbons (TPH and PAH) (p<0.05) and percent organic carbon (% OC), the significant increase (p<0.05) in microbial respiration (MCR) were potentially promoted in the earthworm treatment. Table 2 shows the Effect of number of earthworms on TPH degradation in the crude oil-contaminated soil, on day 0, 14 and 28 [26,29], portray similar results which states that physical actions (aeration, input of nutritionally-rich matters, bioturbation and increased soil surface area where responsible for microbial interaction), as previously reported by [27,29,31,33,34]. The 88-94% TPH level of reduction in the combined earthworms and mash treatment was in good agreement with the results published by [35], but was contrary only to the mixture ratio, where he concluded that such degree of reduction is obtainable only when 50% additive (compost) is used.…”

Bioaugumentation of Crude Oil Contaminated Soil Using Bacterial Consortium

“…12 The undesirable ecological and socioeconomic effects associated with oil spills have led to the development of remediation techniques aimed at reducing the adverse effects of oil in the environment. 2 Biodegradation of hydrocarbon compounds is one of the most important processes involved in the weathering and ARTICLE eventual removal of oil from the environment, particularly for its non-volatile components. Thus, biodegradation can be used for the recovery of sensitive areas such as contaminated shorelines, marshes, and wetlands.…”

“…The scale of the hazards imposed on the natural environment depends on the surface of the area contaminated by the petroleum products, their chemical composition, and the depth at which pollutants occur. [1][2][3][4] Crude oil causes a variety of risks when released into the environment. It is physically, chemically and biologically harmful to soil because of the presence of many toxic compounds, such as polycyclic aromatic hydrocarbons (PAH), benzene and its substituted and cycloalkane rings, in relatively high concentrations.…”