Modeling Transport Processes and Differential Accumulation of Persistent Toxic Organic Substances in Groundwater Systems

1984 ◽  
pp. 135-143
Author(s):  
CHRISTOPHER G. UCHRIN
Keyword(s):  
Transport Processes ◽  
Organic Substances ◽  
Modeling Transport ◽  
Groundwater Systems ◽  
Toxic Organic Substances

scholarly journals STRENGTHENING SPATIAL PERSPECTIVE THROUGH GIS APPLICATIONS IN TRANSPORT MODELING

2022 ◽  
Vol 1 (15) ◽  
pp. 150-154
Author(s):  
Ol'ga Lebedeva ◽  
Zlata Tarasova
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Integrated Approach ◽  
Geographic Information ◽  
Transport Processes ◽  
Transport Modeling ◽  
Spatial Perspective ◽  
Gis Applications ◽  
Technical Developments ◽  
Modeling Transport

The process of transporting passengers and goods takes place in space; therefore, geospatial foundations are considered in transport models. Considering conceptual, methodological and technical developments in this direction, the relevance of an integrated approach becomes obvi-ous. The article deals with geographic information systems and their application in modeling transport processes. Three areas are identified in which the spatial perspective contributes to effective modeling and increasing the reliability of the results obtained. The purpose of the study is to prove the prospects of spatial transport modeling with the integration of geographic information systems

scholarly journals Investigation of the Kinetic Regularities of the Process of Biodegradation of Betaine Surfactant by Bacteria of the Genus Pseudomonas

2021 ◽  
Vol 11 (19) ◽  
pp. 8939
Author(s):  
Anastasia S. Burlachenko ◽  
Olesya V. Salishcheva ◽  
Lyubov S. Dyshlyuk ◽  
Alexander Y. Prosekov
Keyword(s):  
Kinetic Data ◽  
Industrial Wastewater ◽  
Surfactant Concentration ◽  
Time Interval ◽  
Organic Substances ◽  
High Concentration ◽  
First Order ◽  
High Concentrations ◽  
Biological Decomposition ◽  
Toxic Organic Substances

Surfactants are extremely common organic compounds that enter the environment in large quantities in the form of household and industrial wastewater. The toxicity of surfactants for biological systems, the high concentration of substances and the duration of the bioremediation process of polluted ecosystems requires improving the biotechnology of microbial wastewater treatment for surfactants. The purpose of this work is to study the kinetic laws of the reaction of the biological decomposition of betaine surfactants. Pseudomonas bacteria were used as bio-destructors of the surfactants. Kinetic data were obtained to create the possibility of further optimization of research on the biodegradation of toxic organic substances. The strains that were promising destructors of cocamidopropylbetaine were selected. The toxicity of high concentrations of surfactants in relation to microorganisms of the genus Pseudomonas was proven. Safe values of the surfactant concentration for conducting biodegradation tests were found. A kinetic model of the biodestructive process was constructed. It proves that the processes of biodegradation are described by a kinetic equation of the first order. With the derived equation, it is possible to determine the time interval of biodegradation of cocamidopropylbetaine to the specified values by means of mathematical calculations.

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