An Ecological Approach to the Problem of Biodegradation of Phenolic Wastes PDF Download
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Author: Howell D. Cobb
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
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Book Description
A number of microorganisms were isolated from ten samples taken at various locations throughout the Kelly AFB industrial waste treatment facility. Nineteen of these strains were found to be capable of metabolizing cresol and some other related phenolic compounds as a sole carbon and energy source. Taxonomic studies placed these microbes in the flourescent group of Pseudomonas. The effects of temperature and initial pH on the growth rate was determined for these isolates. The highest concentration of cresol utilized by organisms in this study was 1450 ppm which is several fold higher than any previous published reports. The information gained from individual cultures under controlled environmental conditions was used to establish strains compatible in mixed culture. The product of these studies was a stable mixture of bacteria which was used to seed a bench scale pilot plant, operated for seven months, to determine practicality of using these Pseudomonads in a biological system for the removal of cresylic acid from waste water. Results demonstrate this system is stable and efficient. Large scale field tests should be considered. (Author).
Author: Howell D. Cobb
Publisher:
ISBN:
Category :
Languages : en
Pages : 38
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Book Description
A number of microorganisms were isolated from ten samples taken at various locations throughout the Kelly AFB industrial waste treatment facility. Nineteen of these strains were found to be capable of metabolizing cresol and some other related phenolic compounds as a sole carbon and energy source. Taxonomic studies placed these microbes in the flourescent group of Pseudomonas. The effects of temperature and initial pH on the growth rate was determined for these isolates. The highest concentration of cresol utilized by organisms in this study was 1450 ppm which is several fold higher than any previous published reports. The information gained from individual cultures under controlled environmental conditions was used to establish strains compatible in mixed culture. The product of these studies was a stable mixture of bacteria which was used to seed a bench scale pilot plant, operated for seven months, to determine practicality of using these Pseudomonads in a biological system for the removal of cresylic acid from waste water. Results demonstrate this system is stable and efficient. Large scale field tests should be considered. (Author).
Author: Howell D. Cobb
Publisher:
ISBN:
Category :
Languages : en
Pages : 81
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Book Description
Nineteen new strains of bacteria capable of degrading cresol have been isolated and characterized. All are capable of simultaneous metabolism of all three isomers of cresol at concentrations of 900 ppm. Four of the most promising organisms have been subjected to physiological studies to determine optimal and extremes of sewage activity. The following can be stated: (1) Optimal pH 7.3 to 8.3, optimal temperature 35 degrees Centigrade with some activity at 45 degrees Centigrade, have ability to survive short periods of cresol starvation and upon re-exposure again metabolize cresol as may be seen in field conditions. (2) At least one strain can thrive on cresol concentration of 1450 ppm which is three times greater than any published reports. (3) All strains appear able to metabolize o-dichlorobenze, a toxic compound and a problem in treatment of industrial wastes.
Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 1124
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Book Description
Author: Ram Naresh Bharagava
Publisher: Springer
ISBN: 9811086699
Category : Science
Languages : en
Pages : 443
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Book Description
Rapid industrialization is a serious concern in the context of a healthy environment. With the growth in the number of industries, the waste generated is also growing exponentially. The various chemical processes operating in the manufacturing industry generate a large number of by-products, which are largely harmful and toxic pollutants and are generally discharged into the natural water bodies. Once the pollutants enter the environment, they are taken up by different life forms, and because of bio-magnification, they affect the entire food chain and have severe adverse effects on all life forms, including on human health. Although, various physico-chemical and biological approaches are available for the removal of toxic pollutants, unfortunately these are often ineffective and traditional clean up practices are inefficient. Biological approaches utilizing microorganisms (bacterial/fungi/algae), green plants or their enzymes to degrade or detoxify environmental pollutants such as endocrine disruptors, toxic metals, pesticides, dyes, petroleum hydrocarbons and phenolic compounds, offer eco- friendly approaches. Such eco-friendly approaches are often more effective than traditional practices, and are safe for both industry workers as well as environment. This book provides a comprehensive overview of various toxic environmental pollutants from a variety natural and anthropogenic sources, their toxicological effects on the environment, humans, animals and plants as well as their biodegradation and bioremediation using emerging and eco-friendly approaches (e.g. Anammox technology, advanced oxidation processes, membrane bioreactors, membrane processes, GMOs), microbial degradation (e.g. bacteria, fungi, algae), phytoremediation, biotechnology and nanobiotechnology. Offering fundamental and advanced information on environmental problems, challenges and bioremediation approaches used for the remediation of contaminated sites, it is a valuable resource for students, scientists and researchers engaged in microbiology, biotechnology and environmental sciences.
Author: Ram Naresh Bharagava
Publisher: CRC Press
ISBN: 1351700588
Category : Nature
Languages : en
Pages : 568
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Book Description
This book is a compilation of detailed and latest knowledge on the various types of environmental pollutants released from various natural as well as anthropogenic sources, their toxicological effects in environments, humans, animals and plants as well as various bioremediation approaches for their safe disposal into the environments. In this book, an extensive focus has been made on the various types of environmental pollutants discharged from various sources, their toxicological effects in environments, humans, animals and plants as well as their biodegradation and bioremediation approaches for environmental cleanup.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 434
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Book Description
Author:
Publisher:
ISBN:
Category : Cresol
Languages : en
Pages : 176
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Book Description
Author:
Publisher:
ISBN:
Category : Ecological risk assessment
Languages : en
Pages : 376
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Author:
Publisher:
ISBN:
Category : Waste products
Languages : en
Pages : 1056
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Author:
Publisher:
ISBN:
Category : Fresh water
Languages : en
Pages : 446
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Book Description
