Download or read book Biodegradation of Deicing Agents in Various Soil Types written by AnnMarie Halterman-O'Malley and published by . This book was released on 1997-12-01 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Airports have found that spent deicing fluids eventually reach the airfield's stormwater system and soil surrounding the airfield. Due to toxic effects of spent deicing fluids, containing and collecting the fluid for treatment can be a very costly activity for airports. One alternative to dispose of the used deicing fluid is to institute a land treatment system if it can be proven that the deicing fluid is readily biodegradable in a soil system. The primary concern of this research effort was to monitor the behavior of a simulated aircraft deicing fluid in various soil systems. An automated respirometer monitored the behavior of the microbial activity in soil that was contaminated with aircraft deicing fluid (ADF). Reapplication of the contaminant to the soil, one time soil loading variations and a lime additive analyzed in an attempt to maximize the bioctegradation of the contaminant.
Download or read book Evaluation of the Natural Biodegradation of Aircraft Deicing Fluid Components in Soils written by Laura M. Johnson and published by . This book was released on 1997-12-01 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research effort was conducted to analyze the biodegradation of propylene glycol (PG) and tolyltriazole in two different soil types; a sandy soil and a high clay soil. Both an automated respirometer and a high performance liquid chromatograph (H PLO) were used in the analysis. Two separate experiments were conducted. In the first experiment, one level of tolyltriazole was added to the soils to determine whether or not there was a difference in the biodegradation rates of tolyltriazole in the two soils. The respirometer results indicated that there was a significant difference between the respiration rates of the microorganisms in the two soil types, and the HPLO results indicated that biodegradation of the tolyltriazole was occurring in the microcosms. In the second experiment, only the high clay soil was used since it had a significantly higher respiration rate than the sandy soil. This experiment was conducted to determine the affect (inhibition, stimulation, or no effect) of a combined treatment of tolyltriazole and PG vs. the contaminants acting by themselves. The soil was treated with tolyltriazole alone, PG alone, and a combined mixture of the two. One level of PG was used throughout, and two levels of tolyltriazole were used, for a total of five different treatments. Both the respirometer and HPLO results indicated that biodegradation was occurring. The respirometer results indicated that there was a significant increase in the respiration rates of the microorganisms when the contaminants were mixed vs. by themselves, thereby indicating an increase in biodegradation. The HPLC results, however, indicated that the same amount of tolyltriazole was biodegrading whether it was in combination with PG or acting alone. These results may indicate that the significant increase in respiration was due to an increase in biodegradation of PG.
Download or read book Biodegradation of Aircraft Deicing Fluid Components in Soil written by Baron Burke and published by . This book was released on 1999-03-01 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aircraft de-icing fluids (ADFs) are used worldwide to ensure safe aircraft operations. This research effort was conducted to analyze the biodegradation effects of two chemical components of ADFs, propylene glycol (PG) and tolyltriazole (TTA), in a high-clay soil. The research used four test methods; automated respirometry, high performance liquid chromatography (HPLC), microbial colony population counts (MCPC), and agar well diffusion tests (AWDT). The research was partitioned into two phases of investigation. Phase-one analyzed individual and combined ADF chemical components on uncontaminated soil. The presence of TTA, from 25 - 1,000 mg/kg, reduced the maximum respiration rate of 1,000 mg/kg PG alone; however, cumulative respiration over the two-week study period was proportionality higher for TTA (25 - 500 mg/kg). Rate and respiration totals for soil exposed to TTA (25 - 750 mg/kg) alone, were not significantly different from background soil; however, rate and respiration totals for PG (1, 000 mg/kg) alone were significantly higher. The HPLC percentage of recovered TTA, with or without PG presence, indicated a loss (biodegradation and/or absorption) of TTA within the soil. Kellner (1999) conducted HPLC for absorption/desorption of TTA on the same (high-clay) soil. MCPC and AWDT indicated no measurable toxic effects to microbial populations/health occurred from ADF chemical components. Phase-two research conducted reapplication of ADF chemicals on acclimated soils from phase-one. Initial respiration rates from application of 1,000 mg/kg PG on acclimated soil (PG 1,000 mg/kg) compared to 1, 000 mg/kg PG on uncontaminated soil. The acclimated soil produced a significantly larger initial rate of respiration.
Download or read book Renewable Fuels written by Rajni Kant and published by CRC Press. This book was released on 2023-07-17 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Renewable fuels, in the present times, have become important to curb emission of greenhouse gases, which are causing damage to the environment and leading to climatic changes. Ideally, their utilization can be a zero carbon operation. Planting suitable trees on all waste lands and agro forestry on a large scale can fulfil the needs of timber, fuel, fruits, etc. All kinds of lignocellulosic biomass can be converted by several methods to useful liquid fuels like alcohols, biodiesel, methane, renewable diesel and renewable gasoline. Hydrogen can be used as a renewable fuel because of its desirable characteristics and properties for its use as a green fuel.
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.
Download or read book Toxicological Profile for Ethylene Glycol and Propylene Glycol written by and published by . This book was released on 1997 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Draft Toxicological Profile for Ethylene Glycol written by and published by . This book was released on 2007 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary data summary airport deicing operations written by and published by DIANE Publishing. This book was released on 2000 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Indicators of the Environmental Impacts of Transportation written by and published by . This book was released on 1996 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Toxicology and Chemistry written by and published by . This book was released on 2007 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Indicators of the Environmental Impacts of Transportation written by Mark Corrales and published by DIANE Publishing. This book was released on 2000-09 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents quantitative nat. est. of the magnitude of transport's. impacts on the environ. It is the most comprehensive compilation of environmental and transport. data to date. Addresses all primary modes of transport. (highway, rail, aviation, and maritime transport) and all environ'l. media (air, water, and land resources), and covers the full "life-cycle" of transport., from construction of infrastructure and mfg. of vehicles to disposal of vehicles and parts. The impacts of transport. extend beyond the air quality impacts of vehicle travel. Presents a framework for developing various types of indicators and for categorizing transport. activities that affect the environ. Illustrated.
Download or read book Urban and Highway Stormwater Pollution written by Thorkild Hvitved-Jacobsen and published by CRC Press. This book was released on 2010-03-25 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the world population grows, already burgeoning cities are becoming taxed in every conceivable way. One topic that receives few headlines, but significantly impacts an area's quality of health and economic development is the challenge to maintain sustainable urban drainage (SUD). Poor drainage can hamper transportation, add to problems of polluti
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2540 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Report Series written by and published by . This book was released on 1993 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Highway Research Abstracts written by and published by . This book was released on 1992 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Deicers and the Environment written by Frank M. D'Itri and published by CRC Press. This book was released on 1992-03-30 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical Deicers and the Environment provides a complete discussion of chemical deicer technology and history in the United States and Canada. The book describes engineering applications, maintenance procedures, economic evaluations, in addition to environmental problems and concerns relative to the use of chemical deicing. It also provides a technical appraisal of the latest technology to stimulate further research and discussion directed toward achieving a more integrated approach for the application of new deicers that will protect motor vehicles, highways and infrastructures, and the environment. Chemical Deicers and the Environment will be a useful reference volume for scientists, legislators, transportation engineers, environmentalists, consultants, and concerned individuals interested in learning about the economic and environmental advantages and disadvantages of today's chemical deicers.
Download or read book Annual Index abstracts of SAE Technical Papers written by and published by . This book was released on 2007 with total page 1218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
