The Influence of Biostimulator in the Remediation of Petroleum Sludge Polluted Clay Soil: The Concept of Moringa Application

The Bioremediation of Petroleum Sludge (PS) in a clay soil environment of the Niger Delta region of Nigeria using Moringa Seed oil extract (MO) as a Biostimulator (BS) has been investigated, with a view to studying the mitigation impact on the total petroleum hydrocarbon (TPH) content of the petroleum sludge. Two Bioreactors labeled R1 (with MO treatment) and R2 (control: No treatment) containing 3.0kg of clay soils were polluted with 300ml of petroleum sludge. 50ml of MO was added to R1 as a biostimulator. R2 received no form of treatment. Bioremediation extent monitoring was carried out bi-weekly by sampling of the bioreactors contents and analyzing for the individual petroleum hydrocarbon using a gas chromatography (GC). Analysis of the samples at two weeks intervals for a period of 12 weeks reveals that bioremediation occurred in the treatment reactor and the control reactor to which no biostimulator was added. Most of the Hydrocarbon degradation occurred within the first four weeks of the experiment. It was found that moringa seed oil extract was very effective and suitable for remediation of petroleum sludge polluted clay soils due to the high degradation rates of the individual hydrocarbons recorded in the biostimulated reactor against the low degradation rates of those of the control reactor with no form of bio-treatment

Equilibrium Isotherm, Kinetic and Thermodynamic Studies of the Adsorption of Erythrosine Dye onto Activated Carbon from Coconut Fibre

Equilibrium isotherm, kinetic and thermodynamic studies of the adsorption of erythrosine dye onto activation carbon from coconut fire was carried out. The coconut fibre obtain from Elele, Rivers State Nigeria, was washed, dried, carbonized at 400oC, crushed, sieved and activated at 800oC, before it was washed and dried at 110oC. Variable influencing factors, such as contact time, temperature and initial concentration were studied through single-factor experiment, while other factors are kept constant (at 30min, 30oC and 50mg/L) in each adsorption experiment. The Freundlich isotherm fits adsorption compare to others used, the adsorption kinetic followed pseudo-second order reaction, while the thermodynamic parameters, (∆H) = 28.73KJ/mol, (∆G) = 94.45J/mol.K and (∆S) = -0.10, -0.27, -0.82, -1.05, -1.77, -2.49KJ/mol. From the results obtained, activated carbon from coconut fibre, will be an excellent low-cost adsorbent for the removal of Erythrosine from industrial waste water

Curve-Fitting of Bioremediation of Polycyclic Aromatic Hydrocarbons (PAHs) By Co-Composting Using Roost Manure

In this work, ten polluted sites with oil were obtained from Niger Delta, mixed homogenously with compost manure and sent to FUGRO International Laboratory PortHarcourt Nigeria, for bioremediation experiments and analyses. The 4800g sample was divided into twelve (12) equal parts of 400g for bioremediation; 6 parts for the experiments and 6 parts for the control. Particular ringed PAH was isolatedly tested for bioremediation for each of the five ringed PAHs (1 to 5 rings) and the 800g sample was used for respiration test of compost incubation. It was found that the efficiency of bioremediation increased from one to three rings and decreased exponentially for the rest of the rings, showing that bioremediation is not effective for higher ring PAHs. It was also found that bioremediation yields best (optimum) result between two and three ringed PAHs. The respiration of the compost microorganisms improved during incubation by more than two-third i.e 67.7%. The result of this work can be used in bioremediation studies when trying to isolate or choose a particular ringed PAHs for such bioremediation job

Prediction and Analysis of Variable Parameters of some established models in Batch Beer Fermentation

In this work, established models of renowned scholars in fermentation technology are analytically solved. Fermentation experiments were also performed on the production of ethanol and bi-omass from substrate (grain i.e. malted barley) with time and used to validate the analytical solutions of the scholarly models. The result shows that the mod-els were real and true to life as they gave coefficient of correlation of 99.63%. It is also observed that dur-ing this fermentation, there was serious interaction between substrate concentration and ethanol concen-tration, substrate concentration and biomass concen-tration. From this model, it was found that the yield of ethanol (product) was 79.34%, yield of biomass was 43.8%, initial ethanol before fermentation was 1.45g/lit. Substrate at the beginning, S0= 8.114g/lit. and initial biomass X0 was 0.8098g/lit. This result can be applied in fermentation planning in any brew-ing company of research centers to predict variation of certain parameters