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Reductive Dechlorination And Enhanced Bioremediation Of Herbicide Pesticide Contaminated Soils And Sediments
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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 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 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 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 Chlorinated Solvent Source Zone Remediation by : Bernard H. Kueper
Download or read book Chlorinated Solvent Source Zone Remediation written by Bernard H. Kueper and published by Springer Science & Business. This book was released on 2014-04-22 with total page 759 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this book is to help engineers and scientists better understand dense nonaqueous phase liquid (DNAPL) contamination of groundwater and the methods and technology used for characterization and remediation. Remediation of DNAPL source zones is very difficult and controversial and must be based on state-of-the-art knowledge of the behavior (transport and fate) of nonaqueous phase liquids in the subsurface and site specific geology, chemistry and hydrology. This volume is focused on the characterization and remediation of nonaqueous phase chlorinated solvents and it is hoped that mid-level engineers and scientists will find this book helpful in understanding the current state-of-practice of DNAPL source zone management and remediation.
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 Phytoremediation of Soil and Water Contaminants by : Ellen L. Kruger
Download or read book Phytoremediation of Soil and Water Contaminants written by Ellen L. Kruger and published by . This book was released on 1997 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: OVERVIEW 1. Phytoremediation of Contaminated Water and Soil, S.D. Cunningham, J.R. Shann, David E. Crowley, and Todd A. Anderson RHIZOSPHERE ECOLOGY 2. Rhizosphere Ecology of Xenobiotic-Degrading Microorganisms, David E. Crowley, Sam Alvey, and Eric S. Gilbert PHYTOREMEDIATION OF AGROCHEMICALS 3. Aromatic Nitroreduction of Acifluorfen in Soils, Rhizospheres, and Pure Cultures of Rhizobacteria, Robert M. Zablotowicz, Martin A. Locke, and Robert E. Hoagland 4. Atrazine Degradation in Pesticide-Contaminated Soils: Phytoremediation Potential, Ellen L. Kruger, Jennifer C. Anhalt, Diana Sorenson, Brett Nelson, Ana L. Chouhy, Todd A. Anderson, and Joel R. Coats 5. Utilization of Plant Material for Remediation of Herbicide-Contaminated Soils, S.C. Wagner and Robert M. Zablotowicz 6. Potential of Biostimulation To Enhance Dissipation of Aged Herbicide Residues in Land-Farmed Waste, A.S. Felsot and E.K. Dzantor 7. An Integrated Phytoremediation Strategy for Chloroacetamide Herbicides in Soil, Robert E. Hoagland, Robert M. Zablotowicz, and Martin A. Locke 8. Ascorbate: A Biomarker of Herbicide Stress in Wetland Plants, T.F. Lytle and J.S. Lytle 9. Degradation of Persistent Herbicides in Riparian Wetlands, D.M. Stoeckel, E.C. Mudd, and James A. Entry 10. Phytoremediation of Herbicide-Contaminated Surface Water with Aquatic Plants, Pamela J. Rice, Todd A. Anderson, and Joel R. Coats 11. The Metabolism of Exogenously Provided Atrazine by the Ectomycorrhizal Fungus Hebeloma crustuliniforme and the Host Plant Pinus ponderosa, J.L. Gaskin and J. Fletcher PHYTOREMEDIATION OF INDUSTRIAL CHEMICALS 12. Evaluation of the Use of Vegetation for Reducing the Environmental Impact of Deicing Agents, Patricia J. Rice, Todd A. Anderson, and Joel R. Coats 13. Phytoremediation of Trichloroethylene with Hybrid Poplars, Milton Gordon, Nami Choe, Jim Duffy, Gorden Ekuan, Paul Heilman, Indulis Muiznieks, Lee Newman, Marty Ruszaj, B. Brook Shurtleff, Stuart Strand, and Jodi Wilmoth 14. Field Study: Grass Remediation for Clay Soil Contaminated with Polycyclic Aromatic Hydrocarbons, Xiujin Qiu, Thomas W. Leland, Sunil I. Shah, Darwin L. Sorensen, and Ernest W. Kendall 15. Benzo(a)pyrene and Hexachlorobiphenyl Contaminated Soil: Phytoremediation Potential, V. Epuri and Darwin L. Sorensen 16. Fate of Benzene in Soils Planted with Alfalfa: Uptake, Volatilization, and Degradation, A. Ferro, J. Kennedy, W. Doucette, S. Nelson, G. Jauregui, B. McFarland, and B. Bugbee 17. Metabolism of Chlorinated Phenols by Lemna gibba, Duckweed, Harry E. Ensley, Hari A. Sharma, John T. Barber, and Michael A. Polito 18. Rhizosphere Effects on the Degradation of Pyrene and Anthracene in Soil, S.C. Wetzel, M.K. Banks, and A.P. Schwab PHYTOREMEDIATION OF METALS 19. Arabidopsis thaliana as a Model System for Studying Lead Accumulation and Tolerance in Plants, J. Chen, J.W. Huang, T. Caspar, and S.D. Cunningham 20. Bioremediation of Chromium from Water and Soil by Vascular Aquatic Plants, P. Chandra, S. Sinha, and U.N. Rai 21. Phytoextraction of Lead from Contaminated Soils, J.W. Huang, J. Chen, and S.D. Cunningham 22. Phytoremediation and Reclamation of Soils Contaminated with Radionuclides, James A. Entry, Lidia S. Watrud, Robin S. Manasse, and Nan C. Vance.
Book Synopsis Biochemistry of microbial degradation by : Colin Ratledge
Download or read book Biochemistry of microbial degradation written by Colin Ratledge and published by Springer. This book was released on 2012-10-25 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt: Life on the planet depends on microbial activity. The recycling of carbon, nitrogen, sulphur, oxygen, phosphate and all the other elements that constitute living matter are continuously in flux: microorganisms participate in key steps in these processes and without them life would cease within a few short years. The comparatively recent advent of man-made chemicals has now challenged the environment: where degradation does not occur, accumulation must perforce take place. Surprisingly though, even the most recalcitrant of molecules are gradually broken down and very few materials are truly impervious to microbial attack. Microorganisms, by their rapid growth rates, have the most rapid turn-over of their DNA of all living cells. Consequently they can evolve altered genes and therefore produce novel enzymes for handling "foreign" compounds - the xenobiotics - in a manner not seen with such effect in other organisms. Evolution, with the production of micro-organisms able to degrade molecules hitherto intractable to breakdown, is therefore a continuing event. Now, through the agency of genetic manipulation, it is possible to accelerate this process of natural evolution in a very directed manner. The time-scale before a new microorganism emerges that can utilize a recalcitrant molecule has now been considerably shortened by the application of well-understood genetic principles into microbiology. However, before these principles can be successfully used, it is essential that we understand the mechanism by which molecules are degraded, otherwise we shall not know where best to direct these efforts.
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 Anaerobic Degradation of Chlorinated Solvents by : Victor Magar
Download or read book Anaerobic Degradation of Chlorinated Solvents written by Victor Magar and published by . This book was released on 2001 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: The symposium included 600 presentations in 50 sessions on bioremediation and supporting technologies used for a wide range of contaminants already in, or poised to invade, soil, groundwater, and sediment. Three hundred and fifty-two papers were selected and organized into ten volumes. Volume seven's articles examine the use of enhanced anaerobic biotransformation processes for treatment of chlorinated solvents in soil and groundwater. Electron donors used to stimulate reductive dechlorination processes in lab- and field-scale demonstrations are also presented. Articles average eight pages, and contain abstracts and references. Annotation copyrighted by Book News Inc., Portland, OR.
Book Synopsis Handbook of Bioremediation by : Robert D. Norris
Download or read book Handbook of Bioremediation written by Robert D. Norris and published by CRC Press. This book was released on 1993-10-25 with total page 280 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 Modern Crop Protection Compounds by : Peter Jeschke
Download or read book Modern Crop Protection Compounds written by Peter Jeschke and published by John Wiley & Sons. This book was released on 2019-05-06 with total page 1772 pages. Available in PDF, EPUB and Kindle. Book excerpt: The leading reference on this topic has just gotten better. Building on the success of the previous two editions, all the chapters have been updated to reflect the latest developments in the field, and new chapters have been added on picolinic acids, oxathiapiprolin, flupyradifurone, and other topics. This third edition presents the most important active ingredients of modern agrochemicals, with one volume each for herbicides, fungicides, and insecticides. The international team of first-class authors from such renowned crop science companies as Bayer, Syngenta, Dow AgroSciences, DuPont (now Corteva Agriscience), and BASF, address all crucial aspects from the general chemistry and the mode of action to industrial-scale synthesis, as well as from the development of products and formulations to their application in the field. A comprehensive and invaluable source of timely information for all of those working in modern biology, including genetics, biochemistry and chemistry, and for those in modern crop protection science, whether governmental authorities, researchers in agrochemical companies, scientists at universities, conservationists, or managers in organizations and companies involved in improvements to agricultural production.
Book Synopsis Bioavailability of Contaminants in Soils and Sediments by : National Research Council
Download or read book Bioavailability of Contaminants in Soils and Sediments written by National Research Council and published by National Academies Press. This book was released on 2003-05-03 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioavailability refers to the extent to which humans and ecological receptors are exposed to contaminants in soil or sediment. The concept of bioavailability has recently piqued the interest of the hazardous waste industry as an important consideration in deciding how much waste to clean up. The rationale is that if contaminants in soil and sediment are not bioavailable, then more contaminant mass can be left in place without creating additional risk. A new NRC report notes that the potential for the consideration of bioavailability to influence decision-making is greatest where certain chemical, environmental, and regulatory factors align. The current use of bioavailability in risk assessment and hazardous waste cleanup regulations is demystified, and acceptable tools and models for bioavailability assessment are discussed and ranked according to seven criteria. Finally, the intimate link between bioavailability and bioremediation is explored. The report concludes with suggestions for moving bioavailability forward in the regulatory arena for both soil and sediment cleanup.
Book Synopsis Biological Degradation and Bioremediation of Toxic Chemicals by : Ghulam Rasul Chaudhry
Download or read book Biological Degradation and Bioremediation of Toxic Chemicals written by Ghulam Rasul Chaudhry and published by . This book was released on 1994 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: In chapters written by authors on the cutting edge of investigative research, Biological Degradation and Bioremediation of Toxic Chemicals thoroughly covers the range of such organisms and the use of such pathways. Also described are genetic and molecular biological techniques to improve the ability of microorganisms to degrade harmful compounds, including the conversion of wastes into useful products. The book provides a comprehensive basis for further research, indicating future directions for biotechnological applications.
Book Synopsis Microbial Ecology of Leaves by : John H. Andrews
Download or read book Microbial Ecology of Leaves written by John H. Andrews and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt: The leaf surface or phyllosphere is a major habitat for microorganisms. Microbes on or within leaves play important roles in plant ecology, and these microbes can be manipulated to enhance plant growth or reduce plant disease. This book presents a number of critical reviews by internationally recognized experts on the microbial ecology of leaves. Topics include methods of assessment of microbial populations on leaf surfaces, leaves as reservoirs of ice nucleation phenomenon, and leaves as microbial habitats in both aquatic and terrestrial environments. The book will be of interest to students and scientists in numerous disciplines, including botany, aerobiology, meteorology, ecology, agriculture, and microbiology.
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9251305056 Total Pages :156 pages Book Rating :4.2/5 (513 download)
Book Synopsis Soil pollution: a hidden reality by : Food and Agriculture Organization of the United Nations
Download or read book Soil pollution: a hidden reality written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2018-04-30 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document presents key messages and the state-of-the-art of soil pollution, its implications on food safety and human health. It aims to set the basis for further discussion during the forthcoming Global Symposium on Soil Pollution (GSOP18), to be held at FAO HQ from May 2nd to 4th 2018. The publication has been reviewed by the Intergovernmental Technical Panel on Soil (ITPS) and contributing authors. It addresses scientific evidences on soil pollution and highlights the need to assess the extent of soil pollution globally in order to achieve food safety and sustainable development. This is linked to FAO’s strategic objectives, especially SO1, SO2, SO4 and SO5 because of the crucial role of soils to ensure effective nutrient cycling to produce nutritious and safe food, reduce atmospheric CO2 and N2O concentrations and thus mitigate climate change, develop sustainable soil management practices that enhance agricultural resilience to extreme climate events by reducing soil degradation processes. This document will be a reference material for those interested in learning more about sources and effects of soil pollution.
Book Synopsis Pesticide Contamination in Freshwater and Soil Environs by : Mohammad Aneesul Mehmood
Download or read book Pesticide Contamination in Freshwater and Soil Environs written by Mohammad Aneesul Mehmood and published by CRC Press. This book was released on 2021-07-28 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: Taking into consideration that the agricultural industry is greatly dependent on pesticide chemicals to deal with the damage caused due to pests, this new volume details the challenges along with the bioremediation and remediation measures, such as the use of beneficial microorganisms, polymeric nanocomposites for nanoremediation, phytoremediation, and more. It looks at pesticide contamination from agricultural activities in a variety of different environs and a selection of sustainable and eco-friendly remediation approaches. It provides a spectrum of concepts, ideas, and knowledge related to the detrimental actions of pesticides on the environment directly and on human beings indirectly and provides insight into sustainable and advanced pesticide remediation technology. It fills a gap in the available literature in this field and will provide valuable for academicians, researchers, agriculturists, and students.
