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Bioaccumulation of Cadmium in Blue Green Algae Spirulina (Arthrospira) Indica
In the present paper, toxic effects and bioaccumulation of cadmium (II) ions by blue-green algae Spirulina (Arthrospira) indica were discussed. Lab scale open race way ponds (0.5 m long, 0.4 m wide and 0.075 m deep) with Zarrouk medium and S. (Arthrospira) indica culture was loaded with various initial cadmium (II) ion concentra.. Read More
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Cellulose is often a major component of different waste streams from various agriculture and sugarcane industries. Bioconversion of cellulosic components into fermentable sugars has currently been accomplished with the help of the microbial enzyme, cellulase (Endo-β-1, 4-glucanase, Exo-β-1, 4-glucanase and β-gluco.. Read More
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Creosote is widely used as a wood preservative in railway sleepers, utility poles, bridges, building foundations, fences, stakes for vegetables and fruits, garden furniture and outdoor recreational facilities. Contamination of soil and water and threat to human and animals health are the major constraints to disposal of creosote.. Read More
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The batch simultaneous adsorption and biodegradation (SAB) of naphthalene in synthetic naphthalene waste water by orange peels immobilized Pseudomonas aeruginosa NCIB 950 has been studied under different process conditions. Different orange peels particle sizes (0.125, 0.178 and 0.422 mm) were used as adsorbent and support matri.. Read More
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In this work, the phytoaccumulation efficiency of total arsenic (As) by the aquatic plant E. crassipes has been studied. Plants were cultured in double distillated water with modified 0.25 N Hoagland’s nutrient solution at pH 6.8 supplemented with 0, 0.010, 0.025, 0.05, and 0.10 mgL -1 equally mixing (1:1) arsenic (III) an.. Read More
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Microbially Enhanced Oil Recovery (MEOR) can Benefit from Bioremediation
Bioremediation of hydrocarbon contaminated sites has a long history and great achievements were made during the last decades. However, this had too little impact on microbially enhanced oil recovery (MEOR). Now that world-wide demand for oil exceeds the supply it has become necessary to use the scientific achievements from the f.. Read More
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The efficacy of four dispersants using the modified swirling flask method and their potential to support bacterial growth during simulated oil spill control were evaluated. On the basis of the derived efficacy ratios, OC/TT/OSI was the most effective dispersant tested followed by DS/TT/066, Biosolve and CCOD. The results of the .. Read More
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In continuation of our studies on single fungal cultures, this study was aimed to investigate the potential of mixed culture of two indigenous white rot fungi Pleurotus ostreatus IBL-02 and Coriolus versicolor IBL-04 to decolorize and detoxify the dye based textile effluent collected from Sitara Textile Industry (SIT), Faisalaba.. Read More
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The efficiency of bacterial strains isolated from Nigeria Deep Atlantic Ocean water and sediment (2450 m – 2774 m depths) to biodegrade total petroleum hydrocarbons (TPH, n-alkanes) constituents of 1% crude oil was compared with that of similar isolate from oily wastewater reservoir in Imo State, Nigeria. Standardized bact.. Read More
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Response Surface Methodology was used to evaluate the interactions of carbonization temperatures of adsorbents and concentrations of adsorbates on the adsorption capacities and removal efficiencies of activated carbons obtained from flamboyant ( Delonix regia ) pod bark (FB), milk bush ( Thevetia peruviana ) kernel shell (MB) an.. Read More
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Biodegradation of PAHs in ‘Pristine’ Soils from Different Climatic Regions
Polycyclic aromatic hydrocarbons (PAHs) are an important class of organic contaminants ubiquitously found in soils globally. Their fate in soil varies depending on both soil properties and chemical structure; however, microbial degradation represents the most significant means of loss. It is therefore important to understand the.. Read More
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An Emphasis on Xenobiotic Degradation in Environmental Clean up
Setting up of new industries or expansion of existing industrial establishments resulted in the disposal of industrial effluents, which discharge untreated effluents causing air, water, soil and soil solid waste pollution. These disposed materials have high persistence capacities and also can change in to toxic recalcitrant up o.. Read More
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Biodegradation of Phenolic and Polycyclic Aromatic Compounds by Some Algae and Cyanobacteria
In this work, the oxidation of phenolic compounds was accompanied by shift in the wavelength and change in the colour such as the oxidation of phenol to catechol by Volvox aureus, Nostoc Linckia and Oscillatoria rubescens . The oxidation of β-naphthol by Volvox aureus, Lyngbya lagerlerimi and Nostoc linckia , and the oxidat.. Read More
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Availability of usable energy for biosynthesis and maintenance is a primary condition of life. In the case of microbial degradation of so-called recalcitrant compounds, growth is often prevented due to low energy production rates not exceeding maintenance requirements. However, any process that reduces biomass maintenance under .. Read More
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For the purposes of navigation, flooding prevention, and/or environmental protection, aquatic sediment may need to be dredged and disposed. The impact of sediment on soil microbial communities is often neglected. In this study, two fresh sediment samples (A & B) from St. Jones River, Delaware, USA were amended into two diffe.. Read More
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Decolourisation of Reactive Black 5 Using paenibacillus sp. Immobilised Onto Macrocomposite
Azo dyes account for one of the major source of dye wastes in textile effluent. In this study, macrocomposites used in the treatment of a reactive dye, Reactive Black 5 or RB5 is a combination of physical and biological method. Macrocompositee were developed by mixing zeolite, activated carbon and cement as a binder to produce p.. Read More
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Trichloroethylene (TCE), a chlorinated organic solvent, is one of the three most common and widespread groundwater contaminants worldwide. Exposure to this contaminant has been linked to liver and kidney toxicity and cancer in humans and animals [1]. The Salicaceae family, which includes poplar and willow trees, has been very su.. Read More
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Although Brazil is one of the world’s largest consumers of the herbicide hexazinone there are few studies, in the country, on the fate of this compound in the environment. This work studied the distribution and mineralization of hexazinone in a microcosm, with and without plants. The herbicide 14C-hexazinone was applied to.. Read More
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Oxic and Anoxic Metabolism of Steroids by Bacteria
Steroid compounds are produced by eukaryotes where they have a variety of chemical structures and play important physiological roles. Many bacteria are capable of transforming and completely degrading steroids under various growth conditions. The microbial metabolism of steroids has gained considerable interest due to its potent.. Read More
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Isolation, Molecular and Biochemical Identification of Paraoxon-Metabolizing Pseudomonas Species
Seven soil borne bacterial isolates were collected from locations throughout the Houston metropolitan area. All isolatesproved capable of degrading the pesticide paraoxon to p-nitrophenol in carbon limited media and showed a high degree of tolerance to an environment exposed to increasing concentrations of the pesticide. A combi.. Read More
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