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Reductive Dechlorination And Enhanced Bioremediation Of Herbicide Pesticide Contaminated Soils And Sediments Grace Dearborn Inc Mississauga Ontario
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Book Synopsis Reductive Dechlorination and Enhanced Bioremediation of Herbicide/pesticide Contaminated Soils and Sediments, Grace Dearborn Inc., Mississauga, Ontario by :
Download or read book Reductive Dechlorination and Enhanced Bioremediation of Herbicide/pesticide Contaminated Soils and Sediments, Grace Dearborn Inc., Mississauga, Ontario written by and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reductive Dechlorination and Enhanced Bioremediation of Herbicide/pesticide Contaminated Soils and Sediments by : Canada. Technology Development Directorate
Download or read book Reductive Dechlorination and Enhanced Bioremediation of Herbicide/pesticide Contaminated Soils and Sediments written by Canada. Technology Development Directorate and published by . This book was released on 1995 with total page 3 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Anaerobic Reductive Dechlorination of TCE and TCFE in TCE Contaminated Sediments by : Jae-Hyuk Lee
Download or read book Anaerobic Reductive Dechlorination of TCE and TCFE in TCE Contaminated Sediments written by Jae-Hyuk Lee and published by . This book was released on 2006 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research focused on the enhanced reductive dechlorination of trichloroethene (TCE) and its surrogate, trichlorofluoroethene (TCFE), using two bioremediation methods in anaerobic conditions. Two anaerobic bioremediation studies were conducted to investigate the effects of microbial communities in the presence of different electron acceptors and donors during anaerobic reductive dechlorination of TCE and TCFE. The first study was conducted in the groundwater microcosm bottles, filled with groundwater and sediments collected from Richmond site, CA. Parallel reductive dechlorination of TCE and TCFE was evaluated in the presence of fumarate and its product, succinate, while active reduction of high background concentrations of sulfate (2.5 mM) occurred. Because sulfate was assumed as a favorable electron acceptor during reductive dechlorination of chlorinated aliphatic hydrocarbons (CAHs), all microcosms receiving TCE and TCFE with substrates showed enhanced reductive dechlorination activity and even no substrate addition microcosms generated biotransformation products. From the electron mass balance calculations, more than 87.5% of electrons went to sulfate reduction and less than 10% of available electrons involved in dechlorination after sulfate reductions. After amending varying concentrations of sulfate (0 2.5 mM), no inhibition was found between reductive dechlorination of TCE and sulfate reduction. The result indicated that reductive dechlorination could be directly competed with sulfate reduction for available electrons. The second study investigated the effectiveness of in situ push-pull tests to evaluate bioaugmentation in physical aquifer models (PAMs) using dehalogenating strains to reductively dechlorinate TCE to ethene and TCFE to FE in the TCE contaminated sediments. Complete reduction of TCE to ethene occurred in less than 14 days with repeated additions of TCE (13.0 to 46.0 mg/L) and TCFE (15.0 mg/L) was completely transformed to FE in under 24 days. Increased rate and extent of dechlorination in the bioaugmented PAM compared to the nonaugmented control PAM indicated successful transport of the bioaugmented culture through the PAM. Similar transformation rates and time course of TCE and TCFE also indicated that TCFE was a bioprobe for reductive dechlorination of TCE. TCE and TCFE were transformed to cisdichloroethene (c-DCE) and cis-dichlorofluoroethene (c-DCFE) respectively at two of the three sampling ports after 50 days of incubation in the nonaugmented PAM indicating reductive dechlorination activity of indigenous microorganisms. The results showed that it is possible to increase the rate and extent of reductive dechlorination of TCE and TCFE by bioaugmentation and that push-pull tests are effective tools for detecting and quantifying these processes in situ. The third study focused on numerical modeling of the second study. The objectives of this study were (1) to evaluate a simplified method for estimating retardation factors for injected solutes and bioaugmented microorganisms using "pushpull" test injection phase breakthrough curves, (2) to identify whether bioaugmented microorganisms have kept the same transformation capacity of Evanite culture using Michaelis-Menten kinetics by the values provided by Yu et al. (2005) and to verify in situ rates of TCFE reductive dechlorination rates of push-pull tests by numerical modeling, and (3) to investigate a reasonable answer for the nonuniform recovery of ethene and FE during the activity test and the push-pull test. The bioaugmented microorganisms were effectively transported through Hanford sediment. The estimated retardation factor was 1.33. A numerical simulation predicted cell transport in the PAM as far as port 5. This was qualitatively confirmed by cell counts obtained during bioaugmentation but, cells were distributed nonuniformly. The transport test indicated that TCE and TCFE transport was relatively retarded compared to coinjected bromide tracer (retardation factors ranged from 1.33-1.62 for TCE and from 1.44-1.70 for TCFE). The modeling simulation of Michaelis-Menten kinetics for the activity test was well matched for reductive dechlorination rates for TCE and less dechlorinated ethenes using the previous published values of kmax and Ks of chlorinated ethenes by Yu et al. (2005); the model match indicated that the bioaugmented microorganisms kept the same transformation capacity as the original source, Evanite culture (Yu et al., 2005) over 4 months in the PAM. A numerical simulation resulted in the simple first order FE production rate of 1 day' using STOMP code (2002) and the value of FE production rate was in the range of the transformation rates of TCFE during the activity test. The bioaugmented PAM has caused slow loss of injected CAHs during the activity test and the push-pull test.
Book Synopsis Bioremediation of Chlorinated Solvents by : Robert E. Hinchee
Download or read book Bioremediation of Chlorinated Solvents written by Robert E. Hinchee and published by . This book was released on 1995 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil and groundwater contamination stemming from the release of various chlorinated compounds into the environment is a significant and difficult site remediation challenge. The articles in this collection discuss the use of aerobic and anaerobic biological degradation to dehalogenate sites contaminated with pesticides and chlorinated solvents such as trichloroethylene, tetrachloroethene, tetrachloromethene, perchloroethylene, carbon tetrachloride, pentachlorophenol, and chlorinated benzene. Bench- and field-scale studies of the biological processes associated with in situ dechlorination of soil and aquifers are described. Discussed are the uses of microcosm studies and numerical simulation of dechlorination to manage system operation. Site characteristics (e.g., hydraulic properties, temperature, nitrogen availability) and their effect on the stability of the methanotrophic community are examined. Methods discussed include the use of air venting, alternative electron donors, biofilm reactors, surfactants, municipal digester sludge, iron enhancement, and sulfate reduction to improve conditions for the microbial consortia that effect dechlorination.
Book Synopsis Engineered Approaches to in Situ Bioremediation of Chlorinated Solvents by :
Download or read book Engineered Approaches to in Situ Bioremediation of Chlorinated Solvents written by and published by DIANE Publishing. This book was released on 2000 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bioremediation of Recalcitrant Compounds by : Jeffrey Talley
Download or read book Bioremediation of Recalcitrant Compounds written by Jeffrey Talley and published by CRC Press. This book was released on 2016-04-19 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: This authoritative text addresses the latest in bioremediation technologies for three difficult-to-treat contaminant groups: chlorinated solvents, PCBs, and PAHs - one of the most complex and expensive areas of applied remediation engineering. Bioremediation of Recalcitrant Compounds assesses innovative R&D projects developed for each contam
Book Synopsis Bioremediation of chlorinated solvent contaminated groundwater by :
Download or read book Bioremediation of chlorinated solvent contaminated groundwater written by and published by DIANE Publishing. This book was released on with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis In-Situ Bioremediation of Ground Water and Geological Material by : Robert D. Norris
Download or read book In-Situ Bioremediation of Ground Water and Geological Material written by Robert D. Norris and published by DIANE Publishing. This book was released on 1995-08 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a detailed background of the technologies available for the bioremediation of contaminated soil & ground water. Prepared for scientists, consultants, regulatory personnel, & others who are associated in some way with the restoration of soil & ground water at hazardous waste sites. Also provides insights to emerging technologies which are at the research level of formation, ranging from theoretical concepts, through bench scale inquiries, to limited field-scale investigations. 95 tables & figures.
Book Synopsis Handbook of Bioremediation (1993) by : Robert D. Norris
Download or read book Handbook of Bioremediation (1993) written by Robert D. Norris and published by CRC Press. This book was released on 2017-11-22 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by leading soil and ground-water remediation scientists, Handbook of Bioremediation presents information regarding the processes, application, and limitations of using remediation technologies to restore contaminated soil and ground water. It covers field-tested technologies, site characterization requirements for each remediation technology, and the costs associated with their implementation. In addition to discussions and examples of developed technologies, the book provides insights into technologies ranging from theoretical concepts to limited field-scale investigations. In situ remediation systems, air sparging and bioventing, the use of electron acceptors other than oxygen, natural bioremediation, and the introduction of organisms into the subsurface are among the specific topics covered in this invaluable handbook.
Book Synopsis Daramend Bioremediation of Soils Containing Chlorophenols and Polynuclear Aromatic Hydrocarbons (full-scale Demonstration), Grace Dearborn Inc., Mississauga, Ontario by :
Download or read book Daramend Bioremediation of Soils Containing Chlorophenols and Polynuclear Aromatic Hydrocarbons (full-scale Demonstration), Grace Dearborn Inc., Mississauga, Ontario written by and published by . This book was released on 1995 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bioremediation of Chlorinated and Polycyclic Aromatic Hydrocarbon Compounds by : Battelle Memorial In
Download or read book Bioremediation of Chlorinated and Polycyclic Aromatic Hydrocarbon Compounds written by Battelle Memorial In and published by CRC Press. This book was released on 1994-02-28 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely reference presents the state of the art of the emerging and rapidly changing field of bioremediation of chlorinated solvents, PCBs, and other chlorinated compounds, as well as PAHs, both in situ and on site. This landmark publication reports significant advances in bioremediation, with an emphasis on practical applications and state-of-the-art developments. Laboratory and field-oriented reviews are presented with the objective of tying treatability studies and recent laboratory developments to field applications. No other reference source gives you access to the most current techniques and methods for the bioremediation of chlorinated and polycyclic aromatic hydrocarbon compounds. This book represents the work of leading experts in the fields of in situ and on-site bioremediation from North America, Europe, and Asia. The chapters include current field applications and laboratory studies undertaken, in some cases, in countries with regulatory standards more stringent than those of the United States.
Book Synopsis Environmental Bioremediation Technologies by : S.N. Singh
Download or read book Environmental Bioremediation Technologies written by S.N. Singh and published by Springer Science & Business Media. This book was released on 2007-02-05 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioremediation is an eco-friendly, cost-effective and natural technology targeted to remove heavy metals, radionuclides, xenobiotic compounds, organic waste, pesticides etc. from contaminated sites or industrial discharges through biological means. Since this technology is used in in-situ conditions, it does not physically disturb the site unlike conventional methods i.e. chemical or mechanical methods.
Book Synopsis Bioremediation by : Ronald L. Crawford
Download or read book Bioremediation written by Ronald L. Crawford and published by Cambridge University Press. This book was released on 1996-11-21 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increased industrial and agricultural activity this century has led to vast quantities of the earth's soil and groundwater resources becoming contaminated with hazardous chemicals. Bioremediation provides a technology based on the use of living organisms, usually bacteria and fungi, to remove pollutants from soil and water, preferably in situ. This approach, which is potentially more cost-effective than traditional techniques such as incineration of soils and carbon filtration of water, requires an understanding of how organisms transform chemicals, how they survive in polluted environments and how they should be employed in the field. This book examines these issues for many of the most serious and common environmental contaminants, resulting in a volume which presents the most recent position on the application of bioremediation to the cleanup of polluted soil and water.
Book Synopsis Biostimulation Remediation Technologies for Groundwater Contaminants by : Rathoure, Ashok K.
Download or read book Biostimulation Remediation Technologies for Groundwater Contaminants written by Rathoure, Ashok K. and published by IGI Global. This book was released on 2018-05-19 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid progression of technology has significantly impacted population growth, urbanization, and industrialization in modern society. These developments, while positive on the surface, have created critical environmental problems in recent years. Biostimulation Remediation Technologies for Groundwater Contaminants is a critical scholarly publication that examines the release of heavy metals into the environment as a result of human activities and the use of nanoparticles and other technologies to manage and treat the effects of the pollution. Featuring coverage on a broad range of topics such as toxicity of heavy metals, bioremediation, and acclimated bacterial strains, this book is geared toward environmentalists, engineers, academics, researchers, and graduate-level students seeking current research on bioremediation as an alternate way to manage or degrade heavy metal waste.
Book Synopsis In Situ Bioremediation of Perchlorate in Groundwater by : Hans F. Stroo
Download or read book In Situ Bioremediation of Perchlorate in Groundwater written by Hans F. Stroo and published by Springer Science & Business Media. This book was released on 2008-12-02 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the late 1970s and early 1980s, our nation began to grapple with the legacy of past disposal practices for toxic chemicals. With the passage in 1980 of the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), commonly known as Superfund, it became the law of the land to remediate these sites. The U. S. Department of Defense (DoD), the nation’s largest industrial organization, also recognized that it too had a legacy of contaminated sites. Historic operations at Army, Navy, Air Force, and Marine Corps facilities, ranges, manufacturing sites, shipyards, and depots had resulted in widespread contamination of soil, groundwater, and sediment. While Superfund began in 1980 to focus on remediation of heavily contaminated sites largely abandoned or neglected by the private sector, the DoD had already initiated its Installation Restoration Program in the mid 1970s. In 1984, the DoD began the Defense Environmental Restoration Program (DERP) for contaminated site assessment and remediation. Two years later, the U. S. Congress codified the DERP and directed the Secretary of Defense to carry out a concurrent program of research, development, and demonstration of innovative remediation technologies. As chronicled in the 1994 National Research Council report, “Ranking Hazardous-Waste Sites for Remedial Action”, our early estimates on the cost and suitability of existing technologies for cleaning up contaminated sites were wildly optimistic. Original estimates, in 1980, projected an average Superfund cleanup cost of a mere $3.
Book Synopsis Bioremediation of Ground Water and Geological Material by :
Download or read book Bioremediation of Ground Water and Geological Material written by and published by Government Institutes. This book was released on 1994 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On-site Bioreclamation by : Robert E. Hinchee
Download or read book On-site Bioreclamation written by Robert E. Hinchee and published by Butterworth-Heinemann. This book was released on 1991 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
