Download or read book Measuring the Removal of Trichloroethylene from Phytoremediation Sites at Travis and Fairchild Air Force Bases written by Heather A. Klein and published by . This book was released on 2011 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Past use of trichloroethylene (TCE) as a degreasing solvent for aircraft maintenance has resulted in widespread groundwater contamination at Air Force Bases around the world. Travis AFB in California and Fairchild AFB in Washington are evaluating phytoremediation as a treatment option, since trees have been reported to take up dissolved TCE from shallow groundwater and volatilize it to the atmosphere while enhancing the volatilization of TCE from surrounding soil. Previous studies generally focused on the identification of removal mechanisms. The emphasis of this research was to quantify total TCE removal from phytoremediation demonstration plots at Travis and Fairchild AFBs. Tree cores, collected using an increment borer and analyzed using headspace GC/MS, were used to determine the relative TCE concentrations within the plume beneath the trees and to estimate the mass of TCE in each tree. To estimate the iv volatilization of TCE from leaves, a small section of tree branch was placed inside a flow-through glass chamber. Continuous air flow through the chamber maintained normal transpiration and temperature. Air exiting the chamber was sampled for TCE using Tenax® tubes. Humidity probes placed at the chamber entry and exit were used to estimate transpiration. Volatilization of TCE from tree trunk and soil surfaces was measured by enclosing a section of trunk or ground surface within a small stainless steel chamber. Fans in the chamber mixed the air that was recirculated through Tenax® tubes to continuously remove TCE. After a measured time interval, the Tenax® tubes were analyzed for TCE by thermal desorption GC/MS. By using a Thiessen polygon method, the removal of TCE was estimated to be 839 g/yr at Travis and 18 g/yr at Fairchild with the majority from leaf and soil volatilization. Soil surface volatilization of TCE was greater inside the planted areas than outside the planted areas, indicating that the trees enhance this removal by this mechanism. Based on these estimates phytoremediation removed 5 and 50% of the mass of TCE in the groundwater at Fairchild and Travis Air Force sites, respectively.
Download or read book Quantifying the Removal of Trichloroethylene Via Phytoremediation a Hill Air Force Base Utah Operational Unit 2 Using Recent and Historical Data written by J. Oliver Diamond and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Trichloroethylene (TCE) is a carcinogenic, chlorinated volatile organic compound that was commonly used as a degreasing solvent for aircraft maintenance at many US Air Force bases. Past improper disposal of TCE has resulted in contaminated groundwater at many of these facilities. Phytoremediation, defined as the use of plants and their associated microorganisms to stabilize or remove contamination, has been implemented as part of a TCE groundwater cleanup at Travis Air Force base near Sacramento, CA and is being considered as a remediation option at other bases. Volatilization of TCE from leaves and the surface of the soil near the trees were shown to be the most important removal mechanisms at the Travis site. Past studies conducted on indigenous trees growing above TCE contaminated groundwater at several Hill Air Force Base (HAFB) locations have also shown that TCE is taken up and volatilized by the trees. However, phytoremediation has not been implemented, in part because of the difficulty in predicting the potential effectiveness of TCE removal over time. Flow through or recirculating chambers were used to quantify the amount of TCE removed by volatilization through leaf, trunk, and soil surfaces. Tenax4́Ø sorbent tubes, used to collect TCE from the chambers, were analyzed by thermal desorption gas chromatography/mass spectrometry. Tree cores were collected using an incremental borer and analyzed by headspace GC/MS to quantify the TCE mass contained in the trees. Field measured transpiration stream concentrations (TSC) and groundwater data were used to calculate transpiration stream concentration factors (TSCF) for TCE. Comparing current and historical data, it was found that trees reach a steady state TSCF value of 0.26 after about 15 years. Using this information, it was predicted that a phytoremediation plot containing 40 poplar trees located in a seep area within HAFB OU2 would remove 4.82 kg of TCE annually. A larger plot covering the entire hillside above this seep (160 trees) could remove up to 19.28 kg of TCE annually, once trees reach a steady state TSCF.
Download or read book Biofuel Crops written by Bharat P. Singh and published by CABI. This book was released on 2013 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing comprehensive coverage on biofuel crop production and the technological, environmental and resource issues associated with a sustainable biofuel industry, this book is ideal for researchers and industry personnel. Beginning with an introduction to biofuels and the challenges they face, the book then includes detailed coverage on crops of current importance or with high future prospects, including sections on algae, sugar crops and grass, oil and forestry species. The chapters focus on the genetics, breeding, cultivation, harvesting and handling of each crop.
Download or read book Phyto written by Kate Kennen and published by Routledge. This book was released on 2015-05-01 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Winner of the 2017 CBHL Literature Award of Excellence in Landscape Design and Architecture Phyto presents the concepts of phytoremediation and phytotechnology in one comprehensive guide, illustrating when plants can be considered for the uptake, removal or mitigation of on-site pollutants. Current scientific case studies are covered, highlighting the advantages and limitations of plant-based cleanup. Typical contaminant groups found in the built environment are explained, and plant lists for mitigation of specific contaminants are included where applicable. This is the first book to address the benefits of phytotechnologies from a design point of view, taking complex scientific terms and translating the research into an easy-to-understand reference book for those involved in creating planting solutions. Typically, phytotechnology planting techniques are currently employed post-site contamination to help clean up already contaminated soil by taking advantage of the positive effects that plants can have upon harmful toxins and chemicals. This book presents a new concept to create projective planting designs with preventative phytotechnology abilities, ‘phytobuffering’ where future pollution may be expected for particular site programs. Filled with tables, photographs and detailed drawings, Kennen and Kirkwood's text guides the reader through the process of selecting plants for their aesthetic and environmental qualities, combined with their contaminant-removal benefits.
Download or read book Identification and Removal of Trichloroethylene Contamination A Case Study at Wright Patterson Air Force Base written by Gregory A. Butterfield (Captain USAF.) and published by . This book was released on 1991 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Identification and Removal of Trichloroethylene Contamination A Case Study at Wright Patterson Air Force Base written by Gregory A. Butterfield and published by . This book was released on 1991 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this thesis was to determine the parameters associated with installing monitoring wells to detect trichloroethylene contamination, and to determine what emphasis or weights were placed on the nine National Contingency Plan criteria to select a treatment method that would remove trichloroethylene. The results of this study should help installation restoration project officers understand what parameters should be investigated for determining the number and placement of monitoring wells during a remedial investigation for trichloroethylene. The results of this study should also give some insight into what emphasis should be placed on the nine National Contingency Plan criteria.
Download or read book Phytoremediation written by Steven C. McCutcheon and published by John Wiley & Sons. This book was released on 2004-04-05 with total page 1019 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phytormediation is an exciting new method for controlling and cleaning up hazardous wastes using green plants. This book is the first to compile the state of the science and engineering arts in this rapidly advancing field. Phytormediation: Approaches the subject from the perspectives of biochemistry, genetics, toxicology, and pathway analysis. Is written by two of the premier experts in the field.
Download or read book Introduction to Phytoremediation of Contaminated Groundwater written by James E. Landmeyer and published by Springer Science & Business Media. This book was released on 2011-09-18 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the reader with the comprehensive view necessary to understand and critically evaluate the design, implementation, and monitoring of phytoremediation at sites characterized by contaminated groundwater. Part I presents the historical foundation of the interaction between plants and groundwater, introduces fundamental groundwater concepts for plant physiologists, and introduces basic plant physiology for hydrogeologists. Part II presents information on how to assess, design, implement, and monitor phytoremediation projects for hydrologic control. Part III presents how plants take up and detoxify a wide range of organic xenobiotics in contaminated groundwater systems, and provides various approaches on how this can be assessed and monitored. Throughout, concepts are emphasized with numerous case studies, illustrations and pertinent literature citations.
Download or read book Phytoremediation written by Abid A. Ansari and published by Springer. This book was released on 2019-01-02 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text details the plant-assisted remediation method, “phytoremediation”, which involves the interaction of plant roots and associated rhizospheric microorganisms for the remediation of soil contaminated with high levels of metals, metalloids, fuel and oil hydrocarbons, nano particles, pesticides, solvents, organic compounds and various other contaminants. Many chapters highlight and compare the efficiency and economic advantages of phytoremediation and nano-phytoremediation to currently practiced soil and water treatment practices. Volume 6 of Phytoremediation: Management of Environmental Contaminants continues the series. Taken together, the six volumes provide a broad–based global synopsis of the current applications of phytoremediation using plants and the microbial communities associated with their roots to decontaminate terrestrial and aquatic ecosystems.
Download or read book Natural Attenuation for Groundwater Remediation written by Commission on Geosciences, Environment, and Resources and published by National Academies Press. This book was released on 2000-08-31 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past decade, officials responsible for clean-up of contaminated groundwater have increasingly turned to natural attenuation-essentially allowing naturally occurring processes to reduce the toxic potential of contaminants-versus engineered solutions. This saves both money and headaches. To the people in surrounding communities, though, it can appear that clean-up officials are simply walking away from contaminated sites. When is natural attenuation the appropriate approach to a clean-up? This book presents the consensus of a diverse committee, informed by the views of researchers, regulators, and community activists. The committee reviews the likely effectiveness of natural attenuation with different classes of contaminants-and describes how to evaluate the "footprints" of natural attenuation at a site to determine whether natural processes will provide adequate clean-up. Included are recommendations for regulatory change. The committee emphasizes the importance of the public's belief and attitudes toward remediation and provides guidance on involving community stakeholders throughout the clean-up process. The book explores how contamination occurs, explaining concepts and terms, and includes case studies from the Hanford nuclear site, military bases, as well as other sites. It provides historical background and important data on clean-up processes and goes on to offer critical reviews of 14 published protocols for evaluating natural attenuation.
Download or read book Bioremediation Science written by Amitava Rakshit and published by CRC Press. This book was released on 2021-05-21 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides state of the art description of various approaches, techniques and some basic fundamentals of bioremediation to manage a variety of organic and inorganic wastes and pollutants present in our environment. A comprehensive overview of recent advances and new development in the field of bioremediation research are provided within relevant theoretical framework to improve our understanding for the cleaning up of polluted water and contaminated land. The book is easy to read and language can be readily comprehended by aspiring newcomer, students, researchers and anyone else interested in this field. Renowned scientists around the world working on the above topics have contributed chapters. In this edited book, we have addressed the scope of the inexpensive and energy neutral bioremediation technologies. The scope of the book extends to environmental/agricultural scientists, students, consultants, site owners, industrial stakeholders, regulators and policy makers.
Download or read book Water and Solute Permeability of Plant Cuticles written by Lukas Schreiber and published by Springer Science & Business Media. This book was released on 2009-01-31 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transport properties of plant cuticles are important for different ?elds of modern plant sciences. Ecologists and physiologists are interested in water losses to the environment via the cuticle. Penetration of plant protecting agents and nutrients into leaves and fruits is relevant for research in agriculture and plant protection. Ecotoxicologists need to know the amounts of environmental xenobiotics which accumulate in leaves and other primary plant organs from the environment. For all of these studies suitable methods should be used, and a sound theoretical basis helps to formulate testable hypotheses and to interpret experimental data. Unnecessary experiments and experiments which yield ambiguous results can be avoided. In this monograph, we have analysed on a molecular basis the movement of molecules across plant cuticles. Based on current knowledge of chemistry and str- ture of cuticles, we have characterised the aqueous and lipophilic pathways, the nature and mechanisms of mass transport and the factors controlling the rate of movement. We have focused on structure–property relationships for penetrant tra- port, which can explain why water and solute permeabilities of cuticles differ widely among plant species. Based on this knowledge, mechanisms of adaptation to en- ronmental factors can be better understood, and rates of cuticular penetration can be optimised by plant physiologists and pesticide chemists.
Download or read book Plant Molecular Evolution written by J.J. Doyle and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant molecular biology has produced an ever-increasing flood of data about genes and genomes. Evolutionary biology and systematics provides the context for synthesizing this information. This book brings together contributions from evolutionary biologists, systematists, developmental geneticists, biochemists, and others working on diverse aspects of plant biology whose work touches to varying degrees on plant molecular evolution. The book is organized in three parts, the first of which introduces broad topics in evolutionary biology and summarizes advances in plant molecular phylogenetics, with emphasis on model plant systems. The second segment presents a series of case studies of gene family evolution, while the third gives overviews of the evolution of important plant processes such as disease resistance, nodulation, hybridization, transposable elements and genome evolution, and polyploidy.
Download or read book Phytomanagement of Polluted Sites written by Vimal Chandra Pandey and published by Elsevier. This book was released on 2018-11-30 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phytomanagement of Polluted Sites: Market Opportunities in Sustainable Phytoremediation brings together recent and established knowledge on different aspects of phytoremediation, providing this information in a single source that offers a cutting-edge synthesis of scientific and experiential knowledge on industrially contaminated site restoration that is useful for both practitioners and scientists. The book gives interested groups, both non-profit and for-profit, methods to manage dumpsites and other contaminated areas, including tactics on how to mitigate costs and even profit from ecological restoration. - Covers successful examples of turning industrially contaminated sites into ecologically healthy revenue producers - Explores examples of phytomanagement of dumpsites from around the globe - Provides the tools the reader needs to select specific plant species according to site specificity
Download or read book Assisted Phytoremediation written by Vimal Chandra Pandey and published by Elsevier. This book was released on 2021-09-21 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Assisted Phytoremediaion covers a wide range of uses of plants for remediation of environmental pollutants. It includes coverage of such techniques as root engineering, transgenic plants, increasing the biomass, use of genetic engineering and genome editing technology for rapid phytoremediation of pollutants. In order to improve the efficiency of plant remediation, genetic engineering plays a vital role in the overexpression of genes or gene clusters, which are responsible for degradation and uptake of pollutants. The book presents state-of-the-art techniques of assisted phytoremediation to better manage soil and water pollution in large amounts. This book is a valuable resource for researchers, students, and engineers in environmental science and bioengineering, with case studies and state-of-the-art research from eminent global scientists. This book serves as an excellent basis from which scientific knowledge can grow and widen in the field of environmental remediation. - Provides a clear picture of how to design, tune, and implement assisted phytoremediation techniques - Offers a comprehensive analysis of current perspective and state-of-the-art applications of assisted phytoremediation - Introduces the potential of genetic engineering as a rapid, cost-effective technology for environmental remediation using plants
Download or read book Soil Contamination and Alternatives for Sustainable Development written by Dinora Vázquez-Luna and published by BoD – Books on Demand. This book was released on 2019-03-06 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book Soil Contamination and Alternatives for Sustainable Development allows the reader to obtain information about some case studies related to soil contamination, as well as provide sustainable alternatives to reduce environmental damage. The book is divided into two sections, where the first section describes anthropogenic contamination in detail and the second section discusses three alternatives for sustainable development.
Download or read book Transgenic Plant Technology for Remediation of Toxic Metals and Metalloids written by M.N.V. Prasad and published by Academic Press. This book was released on 2018-11-20 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: Transgenic Plant Technology for Remediation of Toxic Metals and Metalloids covers all the technical aspects of gene transfer, from molecular methods, to field performance using a wide range of plants and diverse abiotic stress factors. It describes methodologies that are well established as a key resource for researchers, as well as a tool for training technicians and students. This book is an essential reference for those in the plant sciences, forestry, agriculture, microbiology, environmental biology and plant biotechnology, and those using transgenic plant models in such areas as molecular and cell biology, developmental biology, stress physiology and phytoremediation. Provides in-depth coverage of transgenic plant technology for environmental problems Discusses background and an introduction to techniques and salient protocols using specific plants systems Includes emerging strategies for application of transgenic plans in remediation
