Download or read book Measurement and Modeling of the Chemical Processis in a Constructed Wetland Built to Treat Acid Mine Drainage written by Steven D. Machemer and published by . This book was released on 1992 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seminar Publication written by and published by . This book was released on 1996 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Virtual Rivers written by Ellen E. Wohl and published by Yale University Press. This book was released on 2001-01-01 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book fills an important gap with a clear and comprehensive explanation of how rivers are changed by human activity. The book also includes a generous selection of striking historical and contemporary photographs, maps, and diagrams that provide a fresh perspective on the extent to which the rivers of the Colorado Front Range have undergone change during the last two centuries."--BOOK JACKET.

Download or read book Mine Water Renovation in Wetland Environments written by Richard F. Unz and published by . This book was released on 1992 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biogeochemical Processes Occurring Within Constructed Wetlands for Treatment of Acid Mine Drainage written by Melinda N. Wallace and published by . This book was released on 1996 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Publications written by United States. Bureau of Mines and published by . This book was released on 1987 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Bureau of Mines Publications and Articles with Subject and Author Index written by United States. Bureau of Mines and published by . This book was released on 1992 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biogeochemical Characterization of a Constructed Wetland for Acid Mine Drainage Greatment written by Wendy Buell Gagliano and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Drainage from abandoned coal mines has resulted in severe water quality problems. The oxidation of sulfide minerals in coal and associated rocks releases iron-rich, acidic solutions that damage vegetation and aquatic ecosystems. The objective of this study was to characterize the sediment column of an established compost wetland constructed for the treatment of acid mine drainage to gain insight into biogeochemical processes that might impact treatment efficiency. To do this, mineralogy and geochemical stability of ochreous sediments were examined, spatial and seasonal trends in porewater chemistry were measured, and bacterial community composition profiled. The mineralogical composition of the ochre portion of the sediment column was a mixture of schwertmannite [Fe8O8(OH)4.8(SO4)1.6] and goethite (a-FeOOH). Initial drainage conditions favored the precipitation of schwertmannite, which transformed at a rate of 10-30 mol/m3/yr to goethite. The sulfide minerals, pyrite (FeS2) and greigite (Fe3S4), were identified along with magnetite (Fe3O4) in the compost layer of the sediment. Vertical gradients in porewater chemistry were similar throughout the wetland system and, with the exception of dissolved sulfide concentration, no consistent seasonal trends were detected. Dissolved sulfide was elevated in the compost relative to the ochre and in June compared to February. Porewater pH ranged from 3 to 7 and increased with depth; whereas, the Eh ranged from 110 to 750 mV and decreased with depth. Both pH and Eh changed abruptly near the interface between the ochre and compost layers. Dissolved Fe occurred primarily as Fe(II) and peaked within the interface region. Concentrations of other major elements (Al, Ca, K, Mg, Mn, and Na) in the pore waters showed some variation between cells and sampling dates, but vertical gradients generally reflected wetland stratigraphy. Terminal restriction fragment length polymorphism analysis (T-RFLP) of 16S rRNA genes was used to profile bacterial community composition. Bacterial diversity was found to be similar throughout the sediment profile; however, bacterial communities clustered together and could be correlated to sediment properties. Many terminal restriction fragment's (TRF's) consistent with bacteria relevant to wetland treatment efficiency were found. These included multiple TRF's consistent with eight genera of sulfate-reducing bacteria as well as iron-reducers like Shewanella and Peleobacter.

Download or read book Wetland Design for Mining Operations written by Thomas Wildeman and published by Richmond, B.C. : BiTech Publishers. This book was released on 1993 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical and Biological Monitoring of a Constructed Wetland on Jones Branch Treating Acid Mine Drainage written by Barbara A. Ramey and published by . This book was released on 1995 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book News notes written by and published by . This book was released on 1994 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook for Constructed Wetlands Receiving Acid Mine Drainage written by Thomas Wildeman and published by . This book was released on 1993 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bureau of Mines Research written by and published by . This book was released on with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Constructed Wetlands for Acid Mine Drainage Treatment written by Emma Louise King and published by . This book was released on 2004 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Constructed Wetlands to Treat Acid Mine Drainage written by Frederick M. Williams and published by . This book was released on 1996 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Treatment Wetlands written by Gabriela Dotro and published by IWA Publishing. This book was released on 2017-11-15 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Overview of Treatment Wetlands; Fundamentals of Treatment Wetlands; Horizontal Flow Wetlands; Vertical Flow Wetlands; French Vertical Flow Wetlands; Intensified and Modified Wetlands; Free Water Surface Wetlands; Other Applications; Additional Aspects.