Download or read book Measurement and Manipulation of Copper Speciation and Toxicity in Urban Runoff Acid Mine Drainage and Contaminated Discharged Groundwater written by James Francis Hauri and published by . This book was released on 2001 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bioremediation of Aquatic and Terrestrial Ecosystems written by Milton Fingerman and published by CRC Press. This book was released on 2016-04-19 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioremediation, the use of microorganisms to degrade, sequester, or remove environmental contaminants, is an urgent need of our planet for protection and restoration from toxic contaminants. This book not only provides cutting edge information about bioremediation of aquatic and terrestrial habitats, but also highlights the gaps in our knowledge of

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2002 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Copper Speciation and Toxicity in a Contaminated Estuary written by Ruth S. Eriksen and published by . This book was released on 2001 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Copper in Drinking Water written by National Research Council and published by National Academies Press. This book was released on 2000-04-12 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: The safety of the nation's drinking water must be maintained to ensure the health of the public. The U.S. Environmental Protection Agency (EPA) is responsible for regulating the levels of substances in the drinking water supply. Copper can leach into drinking water from the pipes in the distribution system, and the allowable levels are regulated by the EPA. The regulation of copper, however, is complicated by the fact that it is both necessary to the normal functioning of the body and toxic to the body at too high a level. The National Research Council was requested to form a committee to review the scientific validity of the EPA's maximum contaminant level goal for copper in drinking water. Copper in Drinking Water outlines the findings of the committee's review. The book provides a review of the toxicity of copper as well as a discussion of the essential nature of this metal. The risks posed by both short-term and long-term exposure to copper are characterized, and the implications for public health are discussed. This book is a valuable reference for individuals involved in the regulation of water supplies and individuals interested in issues surrounding this metal.

Download or read book Validity of Laboratory Tests for Predicting Copper Toxicity in Streams written by Jack R. Geckler and published by . This book was released on 1976 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Statistical Analysis and Speciation Modeling of Copper in Oregon Highway Runoff written by Don J. Bloomquist and published by . This book was released on 2010 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low levels of copper have been shown to impair the olfactory system of threatened and endangered (T&E) salmon, decreasing their predator avoidance behavior and likely increasing mortality. However, only dissolved copper (dissCu) present as the cupric ion (Cu2+) and weakly complexed species are truly bioavailable. Previous studies indicate the vast majority of dissCu in natural waters is complexed with dissolved organic matter (DOM). Highway stormwater runoff is a significant source of dissCu to receiving waters. Assessing factors that may impact dissCu concentration and speciation in stormwater provides a framework for predicting when and where copper toxicity could be problematic. To approach this problem, a stormwater sampling effort was undertaken to examine impacts and correlations of site locale, traffic density, storm hydrology, the "first flush" effect and water quality parameters on measured dissCu concentrations in highway runoff. Analytically measured concentrations of key constituents in the stormwater were also entered into a chemical equilibrium model to predict copper speciation. The results of this study show that runoff from urban/high traffic sites, as well as runoff due to the "first flush" effect, exhibits the highest potential for copper toxicity. Furthermore, correlations of [dissCu] and Cu2+ with other variables are developed, the most meaningful of which suggests that hardness is the water quality parameter most directly (positively) associated with [Cu2+] due to competition with copper for binding sites on DOM.

Download or read book Precipitation of Copper from an Acid Mine Water written by F. S. Wartman and published by . This book was released on 1944 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Identification of Total and Biologically Sensitive Forms of Toxic Metal Inputs to an Urban Affected River written by Edward D. Thielk and published by . This book was released on 1983 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geochemical Speciation as a Predictor of Copper Toxicity in Low Alkalinity Soft Waters of East Texas written by Meredith P. Sanders and published by . This book was released on 2009 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: The biotic ligand model (BLM) provides a way to produce site-specific ambient water quality criteria for metals through an equilibrium geochemical modeling framework. Since copper is now the third most used metal in the world, more information is needed to understand its speciation, and its toxicity to organisms in soft water with neutral to low pH and low alkalinity. Waters from eight East Texas rivers and streams which exhibited these characteristics was used in this study. Analysis confirmed the pH of the samples ranging from 3.75 - 8.65 with alkalinity ranging from 22 -- 56 mg CaCO3 L−1 and total hardness ranging from 40--78 mg CaCO3 L−1. Concentrations of K+, Na+, Ca2+, Cl− and Cu2+ were measured in the samples with ion selective electrodes. The water-quality parameters found in each of the natural waters were used in the chemical speciation program, Visual MINTEQ, to evaluate how copper complexes and in what concentrations in these waters. The two copper complexes in the highest concentrations were Cu2+ and CuCO3. Titrations were preformed on the natural waters to see how much CuSO4 was needed to reach three concentrations of ionic copper (1.57x10−8 , 1.57x10−7 and 1.57x10−6 MCu2+) and a statistical difference was found between what was measured and what Visual MINTEQ reported at the two lower concentrations. EC50 values of the toxicity tests in pH 5 ranged from 0.54--2.57 u̳g L−1 Cu2+, pH 6 ranged from 3.73--6.6 u̳g L−1 Cu2 and pH 7 ranged from 6.21--17.53 u̳g L−1 Cu2+. At pH 5 and 6 an over prediction occurred by the BLM and at pH 7 an under prediction occurred.

Download or read book Adsorption of Copper Cadmium and Zinc on Suspended Sediments in a Stream Contaminated by Acid Mine Drainage written by and published by . This book was released on 1991 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Urban Stormwater Management in the United States written by National Research Council and published by National Academies Press. This book was released on 2009-03-17 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid conversion of land to urban and suburban areas has profoundly altered how water flows during and following storm events, putting higher volumes of water and more pollutants into the nation's rivers, lakes, and estuaries. These changes have degraded water quality and habitat in virtually every urban stream system. The Clean Water Act regulatory framework for addressing sewage and industrial wastes is not well suited to the more difficult problem of stormwater discharges. This book calls for an entirely new permitting structure that would put authority and accountability for stormwater discharges at the municipal level. A number of additional actions, such as conserving natural areas, reducing hard surface cover (e.g., roads and parking lots), and retrofitting urban areas with features that hold and treat stormwater, are recommended.

Download or read book Pollution Abstracts written by and published by . This book was released on 1994 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indexes material from conference proceedings and hard-to-find documents, in addition to journal articles. Over 1,000 journals are indexed and literature published from 1981 to the present is covered. Topics in pollution and its management are extensively covered from the standpoints of atmosphere, emissions, mathematical models, effects on people and animals, and environmental action. Major areas of coverage include: air pollution, marine pollution, freshwater pollution, sewage and wastewater treatment, waste management, land pollution, toxicology and health, noise, and radiation.

Download or read book Monitored Natural Attenuation of Inorganic Contaminants in Ground Water written by and published by . This book was released on 2007 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: V.3 ... consists of individual chapters that describe 1) the conceptual background for radionuclides, including tritium, radon, strontium, technetium, uranium, iodine, radium, thorium, cesium, plutonium-americium and 2) data requirements to be met during site characterization.

Download or read book Toxicological Profile for Copper written by and published by . This book was released on 2004 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Toxicological Profile For Copper Update written by U.S. Department of Health and Human Services; Public Health Service and published by . This book was released on 2004 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biogeochemical Cycling of Copper in Acid Mine Drainage written by Bryn E. Kimball and published by . This book was released on 2009 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: