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Biocracking of Heavy Fuel Oil (Mazut) By Native Microorganisms
, M.Sc. Thesis Sharif University of Technology ; Yaghmaei, Soheila (Supervisor) ; Mashreghi, Mansour (Supervisor)
Abstract
Biocracking mazut by native capable microorganisms and practically modeling it is one of the new perfect fields of biotechnology in petroleum manufacture. Sampling soil and water sources polluted by petroleum compounds, has caused a new bacterial strain of Enterobacter cloacae (BBRC 10061) has been identified and isolated from soil in Mashhad contaminated by petroleum wastewater and mixture to biodegrade mazut. Using mixed culture isolated from the sources instead of BBRC 10061 makes same results. In aerobic condition, 13% of mazut in mineral medium has degraded for 10 days however amount of degraded mazut varies with process conditions. Study of fixing and floating mazut, application of...
Study on biodegradation of Mazut by newly isolated strain Enterobacter cloacae BBRC10061: Improving and kinetic investigation
, Article Iranian Journal of Environmental Health Science and Engineering ; Volume 10, Issue 2 , 2013 ; 17351979 (ISSN) ; Mashreghi, M ; Yaghmaei, S ; Sharif University of Technology
2013
Abstract
Mazut as a source content of various hydrocarbons is hard to be degraded and its cracking could turn mazut into useful materials. Nevertheless degradation of mazut by routine methods is too expensive but application of indigenous microorganisms as biocatalysts could be effective and important to lower the costs and expand its consumption. Mazut biodegradation can be improved using various strategies; Therefore in this study newly isolated strain Enterobacter cloacae BBRC 10061 was used in a method of gradual addition of mazut into medium and its results were compared with simple addition method. To investigate degradation of mazut by BBRC 10061, influence of increase of mazut concentration...
Study on biodegradation of Mazut by newly isolated strain Enterobacter cloacae BBRC10061: Improving and kinetic investigation
, Article Journal of Environmental Health Science and Engineering ; 2013 , Volume 10, Issue 1 ; 2052336X (ISSN) ; Mashreghi, M ; Yaghmaei, S ; Sharif University of Technology
2013
Abstract
Mazut as a source content of various hydrocarbons is hard to be degraded and its cracking could turn mazut into useful materials. Nevertheless degradation of mazut by routine methods is too expensive but application of indigenous microorganisms as biocatalysts could be effective and important to lower the costs and expand its consumption. Mazut biodegradation can be improved using various strategies; Therefore in this study newly isolated strain Enterobacter cloacae BBRC 10061 was used in a method of gradual addition of mazut into medium and its results were compared with simple addition method. To investigate degradation of mazut by BBRC 10061, influence of increase of mazut concentration...
Biodegradation of heavy fuel oil by newly isolated strain enterobacter cloacae BBRC10061: Study of unstructured kinetic models and innovative equation
, Article Scientia Iranica ; Volume 20, Issue 6 , 2013 , Pages 1929-1938 ; 10263098 (ISSN) ; Mashreghi, M ; Yaghmaei, S ; Sharif University of Technology
Sharif University of Technology
2013
Abstract
Modeling process is very important and valuable to predict process outcome, especially bioprocesses which are intricate. Because of complex hydrocarbon compounds and oscillations happened in the medium of process, biodegradation of mazut has not already been investigated by mathematical models. In this study, an indigenous bacterium was isolated from oil contaminated soil to investigate biodegradation of mazut at different experimental conditions. Data resulted from mazut degradation, pH, and electrical potential in the medium were recorded. Some reported kinetic models and combinations were investigated to practically model the process. In addition, a new equation that can predict various...