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Abstract
The present study describes the aerobic biodegradation process of a mixture of sanitary sewage sludge and lubricating oil. TG/DTG curves confirmed that the applied aerobic biological treatment decreased the organic material content and caused significant modifications in the thermal behavior of the studied substrates after the functioning period.
biodegradation is convenient because it is versatile, has dynamic metabolisms, and has potential machinery of enzymes. Bioremediation is a nonhazardous, cost-efficient, environment-friendly, and often more effective alternative to conventional methods for the
Microbiol. Rev. 1979 43 496 518 Nyholm, N., Lindgaard-Jorgensen, P., Hansen, N. (1984) Biodegradation of 4
Abstract
The oil content of an artificial polluted soil was estimated at different time period of a biodegradation process by means of thermogravimetry under non-isothermal conditions and in oxidative atmosphere. The model pollutant was hexadecane and for biodegradation a Pseudomonas aeruginosa culture was used. The intensity of the biodegradation process was correlated with the number of Colony Formation Units. In this study Pseudomonas aeruginosa was used, because these species are not pathogenic and easy to maintain in time and is resistant to hexadecane.
Dangmann, E., Stolz, A., Kuhm, A. E., Hammer, A., Feigel, B., Noisommit-Rizzi, N., Rizzi, M., Reuss, M., Knackmuss, H.-J. (1996) Degradation of 4-aminobenzenesulfonate by a two-species bacterial coculture. Biodegradation 7 , 223
composting urban waste and biodegradation of organic substances in soils. Thermophysical properties of organic wastes Values calculated by the use of calorimetric methods and thermal analysis are applied to development of
difficult, because the amount and quality of the wastes from husbandry and plant production are seasonally different. The quality and quantity of input organic materials are often various, so it is crucial to monitor them during the biodegradation process
Summary
We have investigated the structure of Eu(III)-citrate complexes in aqueous solution and their degradability by Pseudomonas fluorescens. Analysis of 1:1, 1:2, and 1:5 Eu(III):citrate solutions at pH 7 by electrospray ionization mass spectrometry (ESI-MS) showed that the 2:2 Eu(III)-citrate complex is the predominant complex species at a low citrate/Eu(III) ratio, while at a high ratio, a 1:2 Eu(III)-citrate complex is formed preferably. Studies on the biodegradation of Eu(III)-citrate complex by P. fluorescens have shown that a 2:2 Eu(III)-citrate complex is resistent to degradation while a 1:2 complex transforms to a 2:2 complex with the degradation of excess citric acid.
Struthers, J. K., Jayachandran, K., Moorman, T. B. (1998): Biodegradation of atrazine by Agrobacterium radiobacter J14a and use of this strain in bioremediation of contaminated soil. Appl. Environ. Microbiol. , 64 , 3368
Abstract
The method of tritium labeling of polychlorinated biphenyls (PCBs) has been developed. It allows producing of uniformly labeled tritium PCBs. High specific activity permits the tracing all of the tritium labeled PCBs biodegradation products. Radiochemical approach of the investigation of PCBs microbial degradation has been developed and PCB-destructive activity of soil bacteria strains has been studied. It was found that 4 investigated bacteria strains of Bacillus sp. has the ability accumulate and destroy PCBs. Use of developed radiochemical methods in complex with other analytical methods in investigation of PCBs biodegradation provide useful additional information. The radiochemical methods developed can be successfully used for wide screening of microorganisms, destructors of PCBs.
