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Factors Affecting Microbial Degradation of Polycyclic Aromatic Hydrocarbon Phenanthrene in the Caribbean Coastal Water
1999
Zaidi, B.R. | Imam, S.H.
Studies were conducted to assess factors that may influence the rate and extent of biodegradation of polyaromatic hydrocarbons (PAHs) in waters of Guayanilla Bay (latitude, 18°N; longitude, 66.45°W) Puerto Rico. Phenanthrene was used as a model PAHs compound. Both the rate and extent of phenanthrene degradation by natural microbial flora present in seawater samples from Guayanilla Bay were quite slow. Addition of KNO3 as a source of inorganic nitrogen (N) resulted in a 10-fold increase in the rate of phenanthrene degradation within a 125 h period, whereas, addition of K2HPO4 as a source of inorganic nutrient phosphorus (P) had no effect. Phenanthrene degradation was strongly inhibited when seawater pH was adjusted to 10.0. Phenanthrene in seawater samples degraded rapidly when first pretreated with hydrogen peroxide (H2O2) and then inoculated with a known indigenous phenanthrene degrading bacterium, Alteromonas sp. Pretreatment of phenanthrene with Triton-x-100 had little or no effect on its degradation by the same bacteria, whereas, degradation in samples preheated at 60°C was somewhat inhibited.
Show more [+] Less [-]Accumulation of 137Cs and 90Sr from contaminated soil by three grass species inoculated with mycorrhizal fungi
1999
Entry, J.A. | Watrud, L.S. | Reeves, M. (USDA Agricultural Research Service, Northwest Irrigation and Soil Research Laboratory, 3793 N 3600 E, Kimberly, ID 83341 (USA))
The distribution of 14C-TNT in different biochemical compartments of the monocotyledonous Triticum aestivum
1999
Sens, C. | Scheidemann, P. | Werner, D. (Fachgebiet Zellbiologie und Angewandte Botanik der Philipps Universitat Marburg, D-35032 Marburg (Germany))
Mutual effects of soil organic matter dynamics and heavy metals fate in a metallophyte grassland
1999
Balabane, M. | Faivre, D. | Oort, F. van | Dahmani-Muller, H. (INRA Unite de Science du Sol, Route de St Cyr, 78026 Versailles Cedex (France))
Mesocosm assays of oil spill bioremediation with oleophilic fertilizers: Inipol, F1 or both?
1999
Santas, R. | Korda, A. | Tenente, A. | Buchholz, K. | Santas, P. (OikoTechnics Institute, 50 Kefallenias st, A. Helioupolis 16 342 (Greece))
Demonstration of accelerated anaerobic bioremediation of TCE using bioaugmentation
1999
Morgan, P. | Buchanan, R.J. | Bartlett, C.L. | Ellis, D.E. | Hanson, G.J. | Lee, M.D. | Lutz, E.J. | Odorn, J.M. | Harkness, M.A. | DeWeerd, K.A. | Spivack, J.L. | Bell, M.J.
